* bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs
@ 2021-07-21 14:58 Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-07-21 15:14 ` Lars Ingebrigtsen
` (2 more replies)
0 siblings, 3 replies; 30+ messages in thread
From: Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors @ 2021-07-21 14:58 UTC (permalink / raw)
To: 49682
(let () (run-with-timer 0 nil #'url-retrieve "https://www.gnu.org/" #'ignore) (diary-mail-entries))
hangs emacs when smtpmail library is being used for sending mail. My guess is accept-process-output in url library is called from within accept-process-output in smtpmail library.
In GNU Emacs 27.2.50 (build 5, x86_64-pc-linux-gnu, GTK+ Version 3.24.24, cairo version 1.16.0)
of 2021-07-14 built on hp
Repository revision: 7ac411ae2ce91572a2bdb8eaa1ee6ceccf162e35
Repository branch: emacs-27
Windowing system distributor 'The X.Org Foundation', version 11.0.12011000
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^ permalink raw reply [flat|nested] 30+ messages in thread* bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs 2021-07-21 14:58 bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors @ 2021-07-21 15:14 ` Lars Ingebrigtsen 2021-07-21 16:14 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors 2021-07-21 19:29 ` Eli Zaretskii 2023-11-06 17:14 ` LdBeth 2 siblings, 1 reply; 30+ messages in thread From: Lars Ingebrigtsen @ 2021-07-21 15:14 UTC (permalink / raw) To: 49682; +Cc: Rajeev N Rajeev N via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org> writes: > [Quoted text removed due to X-No-Archive] Can you try the same recipe in the current development version of Emacs? There's been some changes to try to guarantee forward progress when there's several processes waiting for output. -- (domestic pets only, the antidote for overdose, milk.) bloggy blog: http://lars.ingebrigtsen.no ^ permalink raw reply [flat|nested] 30+ messages in thread
* bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs 2021-07-21 15:14 ` Lars Ingebrigtsen @ 2021-07-21 16:14 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors 2021-07-21 16:18 ` Lars Ingebrigtsen 0 siblings, 1 reply; 30+ messages in thread From: Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors @ 2021-07-21 16:14 UTC (permalink / raw) To: Lars Ingebrigtsen; +Cc: 49682 [-- Attachment #1: Type: text/html, Size: 344 bytes --] ^ permalink raw reply [flat|nested] 30+ messages in thread
* bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs 2021-07-21 16:14 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors @ 2021-07-21 16:18 ` Lars Ingebrigtsen [not found] ` <87tukntz2m.fsf@hm.sivalik.com> 2021-07-23 17:00 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors 0 siblings, 2 replies; 30+ messages in thread From: Lars Ingebrigtsen @ 2021-07-21 16:18 UTC (permalink / raw) To: Rajeev N; +Cc: 49682 Rajeev N <rajeev.jnk@sivalik.com> writes: > [Quoted text removed due to X-No-Archive] Thanks for checking. The test case is: (let () (run-with-timer 0 nil #'url-retrieve "https://www.gnu.org/" #'ignore) (diary-mail-entries)) This does not hang for me on the current trunk, unfortunately, but perhaps there's a timing issue involved? -- (domestic pets only, the antidote for overdose, milk.) bloggy blog: http://lars.ingebrigtsen.no ^ permalink raw reply [flat|nested] 30+ messages in thread
[parent not found: <87tukntz2m.fsf@hm.sivalik.com>]
* bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs [not found] ` <87tukntz2m.fsf@hm.sivalik.com> @ 2021-07-21 16:40 ` Lars Ingebrigtsen 0 siblings, 0 replies; 30+ messages in thread From: Lars Ingebrigtsen @ 2021-07-21 16:40 UTC (permalink / raw) To: Rajeev N; +Cc: 49682 (Please keep the debbugs address in the CCs -- otherwise the mail won't reach the bug tracker.) Rajeev N <rajeev.jnk@sivalik.com> writes: > Can you please confirm that it does not hang for you even when > smtpmail elisp library is being used to send mail. Yes, I use smtpmail. ^ permalink raw reply [flat|nested] 30+ messages in thread
* bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs 2021-07-21 16:18 ` Lars Ingebrigtsen [not found] ` <87tukntz2m.fsf@hm.sivalik.com> @ 2021-07-23 17:00 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors 2021-07-24 10:28 ` Lars Ingebrigtsen 2021-07-26 18:58 ` Dmitry Gutov 1 sibling, 2 replies; 30+ messages in thread From: Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors @ 2021-07-23 17:00 UTC (permalink / raw) To: Lars Ingebrigtsen; +Cc: 49682 Hi Lars, Can you please check the following recipe, with smtpmail package without queuing, it hangs emacs for me, you may have to try couple of times. (let () (run-with-timer 0 nil #'url-retrieve "https://www.gnu.org/" #'ignore) (make-process :name "echo" :command '("echo") :sentinel (lambda (_p _e) (run-with-timer 0 nil #'diary-mail-entries)))) Thanks. ^ permalink raw reply [flat|nested] 30+ messages in thread
* bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs 2021-07-23 17:00 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors @ 2021-07-24 10:28 ` Lars Ingebrigtsen 2021-07-24 10:46 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors 2021-07-26 18:58 ` Dmitry Gutov 1 sibling, 1 reply; 30+ messages in thread From: Lars Ingebrigtsen @ 2021-07-24 10:28 UTC (permalink / raw) To: Rajeev N; +Cc: 49682 Rajeev N <rajeev.jnk@sivalik.com> writes: > [Quoted text removed due to X-No-Archive] I've tried it a bunch of times, but it never hangs for me. It does message this, though: Sending via mail... Blocking call to accept-process-output with quit inhibited!! [4 times] Sending email Blocking call to accept-process-output with quit inhibited!! Sending email done Blocking call to accept-process-output with quit inhibited!! -- (domestic pets only, the antidote for overdose, milk.) bloggy blog: http://lars.ingebrigtsen.no ^ permalink raw reply [flat|nested] 30+ messages in thread
* bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs 2021-07-24 10:28 ` Lars Ingebrigtsen @ 2021-07-24 10:46 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors 0 siblings, 0 replies; 30+ messages in thread From: Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors @ 2021-07-24 10:46 UTC (permalink / raw) To: Lars Ingebrigtsen; +Cc: 49682 Thank for checking. It always hangs for me in the 1st or 2nd try. Here is what I get when I send a usr2 signal to emacs process. Debugger entered--Lisp error: (quit) accept-process-output(#<process smtpmail> 0.05) network-stream-get-response(#<process smtpmail> 1 "^[0-9]+ .*\15\n") network-stream-open-starttls("smtpmail" #<buffer *trace of SMTP session to smtp.gmail.com*> "smtp.gmail.com" 587 (:type starttls :return-list t :warn-unless-encrypted nil :capability-command "EHLO hp\15\n" :end-of-command "^[0-9]+ .*\15\n" :success "^2.*\n" :always-query-capabilities t :starttls-function #f(compiled-function (capabilities) #<bytecode 0x1565a5a06db9>) :client-certificate t :use-starttls-if-possible t)) open-network-stream("smtpmail" #<buffer *trace of SMTP session to smtp.gmail.com*> "smtp.gmail.com" 587 :type starttls :return-list t :warn-unless-encrypted nil :capability-command "EHLO hp\15\n" :end-of-command "^[0-9]+ .*\15\n" :success "^2.*\n" :always-query-capabilities t :starttls-function #f(compiled-function (capabilities) #<bytecode 0x1565a5a06db9>) :client-certificate t :use-starttls-if-possible t) smtpmail-via-smtp(("rajeev.jnk@sivalik.com") #<buffer smtpmail temp>) smtpmail-send-it() message-smtpmail-send-it() message-multi-smtp-send-mail() gnus-agent-send-mail() message--send-mail-maybe-partially() message-send-mail(nil) message-send-via-mail(nil) message-send(nil) message-send-and-exit(nil) funcall-interactively(message-send-and-exit nil) call-interactively(message-send-and-exit) diary-mail-entries() apply(diary-mail-entries nil) timer-event-handler([t 24827 60854 498512 nil diary-mail-entries nil nil 704000]) ^ permalink raw reply [flat|nested] 30+ messages in thread
* bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs 2021-07-23 17:00 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors 2021-07-24 10:28 ` Lars Ingebrigtsen @ 2021-07-26 18:58 ` Dmitry Gutov 2021-07-26 19:54 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors 1 sibling, 1 reply; 30+ messages in thread From: Dmitry Gutov @ 2021-07-26 18:58 UTC (permalink / raw) To: Rajeev N, Lars Ingebrigtsen; +Cc: 49682 On 23.07.2021 20:00, Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors wrote: > (let () > (run-with-timer 0 nil #'url-retrieve"https://www.gnu.org/" #'ignore) > (make-process :name "echo" :command '("echo") > :sentinel (lambda (_p _e) (run-with-timer 0 nil #'diary-mail-entries)))) Any chance you have an example of the problem that doesn't require SMTP/Mail/Gnus to be configured in Emacs? ^ permalink raw reply [flat|nested] 30+ messages in thread
* bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs 2021-07-26 18:58 ` Dmitry Gutov @ 2021-07-26 19:54 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors 2021-07-26 20:22 ` Dmitry Gutov 0 siblings, 1 reply; 30+ messages in thread From: Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors @ 2021-07-26 19:54 UTC (permalink / raw) To: Dmitry Gutov; +Cc: Lars Ingebrigtsen, 49682 For me the following also hangs emacs. The problem seems to me that (accept-process-output stream 0.05) in network-stream-get-response does not return even though it has a timeout of .05. (let () (run-with-timer 0 nil #'url-retrieve "https://www.gnu.org/" #'ignore) (make-process :name "echo" :command '("echo") :sentinel (lambda (_p _e) (with-current-buffer (generate-new-buffer " *debug") (run-with-timer 0 nil #'open-network-stream "testing" (current-buffer) "smtp.gmail.com" 587 :type 'starttls :return-list t :warn-unless-encrypted t :capability-command "EHLO www.gnu.org\r\n" :end-of-command "^[0-9]+ .*\r\n" :success "^2.*\n" :always-query-capabilities t :starttls-function (lambda (capabilities) (and (string-match "[ -]STARTTLS" capabilities) "STARTTLS\r\n")) :client-certificate t :use-starttls-if-possible t))))) On Mon, 26 Jul 2021 at 9:58 pm +0300, Dmitry Gutov wrote: #+begin_quote On 23.07.2021 20:00, Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors wrote: > (let () > (run-with-timer 0 nil #'url-retrieve"https://www.gnu.org/" #'ignore) > (make-process :name "echo" :command '("echo") > :sentinel (lambda (_p _e) (run-with-timer 0 nil #'diary-mail-entries)))) Any chance you have an example of the problem that doesn't require SMTP/Mail/Gnus to be configured in Emacs? #+end_quote ^ permalink raw reply [flat|nested] 30+ messages in thread
* bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs 2021-07-26 19:54 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors @ 2021-07-26 20:22 ` Dmitry Gutov 2021-07-26 20:55 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors 0 siblings, 1 reply; 30+ messages in thread From: Dmitry Gutov @ 2021-07-26 20:22 UTC (permalink / raw) To: Rajeev N; +Cc: Lars Ingebrigtsen, 49682 On 26.07.2021 22:54, Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors wrote: > For me the following also hangs emacs. The problem seems to me that (accept-process-output stream 0.05) in network-stream-get-response does not return even though it has a timeout of .05. > > (let () > (run-with-timer 0 nil #'url-retrieve"https://www.gnu.org/" #'ignore) > (make-process :name "echo" :command '("echo") > :sentinel (lambda (_p _e) > (with-current-buffer (generate-new-buffer " *debug") > (run-with-timer 0 nil #'open-network-stream > "testing" (current-buffer) "smtp.gmail.com" 587 > :type 'starttls > :return-list t > :warn-unless-encrypted t > :capability-command "EHLOwww.gnu.org\r\n" > :end-of-command "^[0-9]+ .*\r\n" > :success "^2.*\n" > :always-query-capabilities t > :starttls-function > (lambda (capabilities) > (and (string-match "[ -]STARTTLS" capabilities) > "STARTTLS\r\n")) > :client-certificate t > :use-starttls-if-possible t))))) Hmm, that doesn't freeze for me. Even though if I follow 'C-x C-e' with 'C-p' right away, it will wait for like 0.5s before moving the cursor to the previous line. I have tried it in a number of versions of Emacs, so far no luck. Any chance you're not starting with 'emacs -Q' and your personal config affects this? ^ permalink raw reply [flat|nested] 30+ messages in thread
* bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs 2021-07-26 20:22 ` Dmitry Gutov @ 2021-07-26 20:55 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors 2021-07-27 14:13 ` Dmitry Gutov 0 siblings, 1 reply; 30+ messages in thread From: Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors @ 2021-07-26 20:55 UTC (permalink / raw) To: Dmitry Gutov; +Cc: Lars Ingebrigtsen, 49682 I am able to reproduce the hang on head of master and emacs-27 branches using emacs -Q, it does not happen every time, sometime it takes a few tries. The following is what is shown by strace in a loop: pselect6(20, [3 5 13 17 19], NULL, NULL, {tv_sec=0, tv_nsec=0}, {NULL, 8}) = 1 (in [19], left {tv_sec=0, tv_nsec=0}) rt_sigprocmask(SIG_BLOCK, [INT], [], 8) = 0 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 rt_sigprocmask(SIG_BLOCK, [INT], [], 8) = 0 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 pselect6(20, [3 5 6 8 13 15 17 19], [], NULL, {tv_sec=0, tv_nsec=0}, {NULL, 8}) = 1 (in [19], left {tv_sec=0, tv_nsec=0}) rt_sigprocmask(SIG_BLOCK, [INT], [], 8) = 0 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 rt_sigprocmask(SIG_BLOCK, [INT], [], 8) = 0 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 pselect6(20, [3 5 13 17 19], NULL, NULL, {tv_sec=0, tv_nsec=0}, {NULL, 8}) = 1 (in [19], left {tv_sec=0, tv_nsec=0}) rt_sigprocmask(SIG_BLOCK, [INT], [], 8) = 0 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 rt_sigprocmask(SIG_BLOCK, [INT], [], 8) = 0 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 pselect6(20, [3 5 6 8 13 15 17 19], [], NULL, {tv_sec=0, tv_nsec=0}, {NULL, 8}) = 1 (in [19], left {tv_sec=0, tv_nsec=0}) rt_sigprocmask(SIG_BLOCK, [INT], [], 8) = 0 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ^ permalink raw reply [flat|nested] 30+ messages in thread
* bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs 2021-07-26 20:55 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors @ 2021-07-27 14:13 ` Dmitry Gutov 2021-07-27 17:22 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors 0 siblings, 1 reply; 30+ messages in thread From: Dmitry Gutov @ 2021-07-27 14:13 UTC (permalink / raw) To: Rajeev N; +Cc: Lars Ingebrigtsen, 49682 On 26.07.2021 23:55, Rajeev N wrote: > I am able to reproduce the hang on head of master and emacs-27 branches using emacs -Q, it does not happen every time, sometime it takes a few tries. The following is what is shown by strace in a loop: > > pselect6(20, [3 5 13 17 19], NULL, NULL, {tv_sec=0, tv_nsec=0}, {NULL, 8}) = 1 (in [19], left {tv_sec=0, tv_nsec=0}) > rt_sigprocmask(SIG_BLOCK, [INT], [], 8) = 0 > rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 > rt_sigprocmask(SIG_BLOCK, [INT], [], 8) = 0 > rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 > pselect6(20, [3 5 6 8 13 15 17 19], [], NULL, {tv_sec=0, tv_nsec=0}, {NULL, 8}) = 1 (in [19], left {tv_sec=0, tv_nsec=0}) > rt_sigprocmask(SIG_BLOCK, [INT], [], 8) = 0 > rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 > rt_sigprocmask(SIG_BLOCK, [INT], [], 8) = 0 > rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 > pselect6(20, [3 5 13 17 19], NULL, NULL, {tv_sec=0, tv_nsec=0}, {NULL, 8}) = 1 (in [19], left {tv_sec=0, tv_nsec=0}) > rt_sigprocmask(SIG_BLOCK, [INT], [], 8) = 0 > rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 > rt_sigprocmask(SIG_BLOCK, [INT], [], 8) = 0 > rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 > pselect6(20, [3 5 6 8 13 15 17 19], [], NULL, {tv_sec=0, tv_nsec=0}, {NULL, 8}) = 1 (in [19], left {tv_sec=0, tv_nsec=0}) > rt_sigprocmask(SIG_BLOCK, [INT], [], 8) = 0 > rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 Maybe Lars or Eli can interpret this log. ^ permalink raw reply [flat|nested] 30+ messages in thread
* bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs 2021-07-27 14:13 ` Dmitry Gutov @ 2021-07-27 17:22 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors 2021-07-27 17:35 ` Eli Zaretskii 0 siblings, 1 reply; 30+ messages in thread From: Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors @ 2021-07-27 17:22 UTC (permalink / raw) To: Dmitry Gutov; +Cc: Lars Ingebrigtsen, 49682, Eli Zaretskii Another input that may help resolve the issue: In the pselect loop- file descriptor 19 is show in CLOSE_WAIT state by lsof. lsof: emacs 66152 rajeev 19u IPv4 2567759 0t0 TCP hp:37994->wildebeest.gnu.org:https (CLOSE_WAIT) strace: pselect6(20, [3 5 6 8 13 15 17 19], [], NULL, {tv_sec=0, tv_nsec=0}, {NULL, 8}) = 1 (in [19], left {tv_sec=0, tv_nsec=0}) rt_sigprocmask(SIG_BLOCK, [INT], [], 8) = 0 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 rt_sigprocmask(SIG_BLOCK, [INT], [], 8) = 0 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 pselect6(20, [3 5 13 17 19], NULL, NULL, {tv_sec=0, tv_nsec=0}, {NULL, 8}) = 1 (in [19], left {tv_sec=0, tv_nsec=0}) ^ permalink raw reply [flat|nested] 30+ messages in thread
* bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs 2021-07-27 17:22 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors @ 2021-07-27 17:35 ` Eli Zaretskii 2021-07-27 21:40 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors 0 siblings, 1 reply; 30+ messages in thread From: Eli Zaretskii @ 2021-07-27 17:35 UTC (permalink / raw) To: Rajeev N; +Cc: larsi, 49682, dgutov > Disposition-Notification-To: rajeev.jnk@sivalik.com > From: Rajeev N <rajeev.jnk@sivalik.com> > Cc: Lars Ingebrigtsen <larsi@gnus.org>, 49682@debbugs.gnu.org, Eli > Zaretskii <eliz@gnu.org> > Date: Tue, 27 Jul 2021 13:22:54 -0400 > > Another input that may help resolve the issue: > > In the pselect loop- file descriptor 19 is show in CLOSE_WAIT state by lsof. > > lsof: > > emacs 66152 rajeev 19u IPv4 2567759 0t0 TCP hp:37994->wildebeest.gnu.org:https (CLOSE_WAIT) If the remote host closed the connection, why isn't our sentinel being called and the connection closed? ^ permalink raw reply [flat|nested] 30+ messages in thread
* bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs 2021-07-27 17:35 ` Eli Zaretskii @ 2021-07-27 21:40 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors 2021-07-28 16:12 ` Eli Zaretskii 0 siblings, 1 reply; 30+ messages in thread From: Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors @ 2021-07-27 21:40 UTC (permalink / raw) To: Eli Zaretskii; +Cc: larsi, 49682, dgutov It seems to be a bug- a similar bug was fixed recently. http://git.savannah.gnu.org/cgit/emacs.git/commit/src/process.c?id=1773679af3241919a85d6174b1554070a63cca79 On Tue, 27 Jul 2021 at 8:35 PM +0300, Eli Zaretskii wrote: #+begin_quote > Disposition-Notification-To: rajeev.jnk@sivalik.com > From: Rajeev N <rajeev.jnk@sivalik.com> > Cc: Lars Ingebrigtsen <larsi@gnus.org>, 49682@debbugs.gnu.org, Eli > Zaretskii <eliz@gnu.org> > Date: Tue, 27 Jul 2021 13:22:54 -0400 > > Another input that may help resolve the issue: > > In the pselect loop- file descriptor 19 is show in CLOSE_WAIT state by lsof. > > lsof: > > emacs 66152 rajeev 19u IPv4 2567759 0t0 TCP hp:37994->wildebeest.gnu.org:https (CLOSE_WAIT) If the remote host closed the connection, why isn't our sentinel being called and the connection closed? #+end_quote ^ permalink raw reply [flat|nested] 30+ messages in thread
* bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs 2021-07-27 21:40 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors @ 2021-07-28 16:12 ` Eli Zaretskii 2021-07-28 17:12 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors 2021-08-06 16:55 ` Robert Pluim 0 siblings, 2 replies; 30+ messages in thread From: Eli Zaretskii @ 2021-07-28 16:12 UTC (permalink / raw) To: Rajeev N; +Cc: larsi, 49682, dgutov > Disposition-Notification-To: rajeev.jnk@sivalik.com > From: Rajeev N <rajeev.jnk@sivalik.com> > Cc: dgutov@yandex.ru, larsi@gnus.org, 49682@debbugs.gnu.org > Date: Tue, 27 Jul 2021 17:40:27 -0400 > > It seems to be a bug- a similar bug was fixed recently. It might be a bug, but we need a more detailed understanding of how this happens. I also very much wonder why many people are unable to reproduce this problem on very similar if not identical systems. Could this be a kernel or a library bug specific to your system? ^ permalink raw reply [flat|nested] 30+ messages in thread
* bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs 2021-07-28 16:12 ` Eli Zaretskii @ 2021-07-28 17:12 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors 2021-08-06 16:55 ` Robert Pluim 1 sibling, 0 replies; 30+ messages in thread From: Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors @ 2021-07-28 17:12 UTC (permalink / raw) To: Eli Zaretskii; +Cc: larsi, 49682, dgutov [-- Attachment #1: Type: text/html, Size: 808 bytes --] ^ permalink raw reply [flat|nested] 30+ messages in thread
* bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs 2021-07-28 16:12 ` Eli Zaretskii 2021-07-28 17:12 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors @ 2021-08-06 16:55 ` Robert Pluim 1 sibling, 0 replies; 30+ messages in thread From: Robert Pluim @ 2021-08-06 16:55 UTC (permalink / raw) To: Eli Zaretskii; +Cc: Rajeev N, 49682, larsi, dgutov >>>>> On Wed, 28 Jul 2021 19:12:58 +0300, Eli Zaretskii <eliz@gnu.org> said: >> Disposition-Notification-To: rajeev.jnk@sivalik.com >> From: Rajeev N <rajeev.jnk@sivalik.com> >> Cc: dgutov@yandex.ru, larsi@gnus.org, 49682@debbugs.gnu.org >> Date: Tue, 27 Jul 2021 17:40:27 -0400 >> >> It seems to be a bug- a similar bug was fixed recently. Eli> It might be a bug, but we need a more detailed understanding of how Eli> this happens. Eli> I also very much wonder why many people are unable to reproduce this Eli> problem on very similar if not identical systems. Could this be a Eli> kernel or a library bug specific to your system? I can reproduce it from 'emacs -Q -nw' on my Debian bullseye system, but not from 'emacs -Q' SIGUSR2 backtrace: Debugger entered--Lisp error: (quit) accept-process-output(#<process testing> 0.05) network-stream-get-response(#<process testing> 250 "^[0-9]+ .*\15\n") network-stream-command(#<process testing> "EHLO www.gnu.org\15\n" "^[0-9]+ .*\15\n") network-stream-open-starttls("testing" #<buffer *debug> "smtp.gmail.com" 587 (:type starttls :return-list t :warn-unless-encrypted t :capability-command "EHLO www.gnu.org\15\n" :end-of-command "^[0-9]+ .*\15\n" :success "^2.*\n" :always-query-capabilities t :starttls-function (lambda (capabilities) (and (string-match "[ -]STARTTLS" capabilities) "STARTTLS\15\n")) :client-certificate t :use-starttls-if-possible t)) open-network-stream("testing" #<buffer *debug> "smtp.gmail.com" 587 :type starttls :return-list t :warn-unless-encrypted t :capability-command "EHLO www.gnu.org\15\n" :end-of-command "^[0-9]+ .*\15\n" :success "^2.*\n" :always-query-capabilities t :starttls-function (lambda (capabilities) (and (string-match "[ -]STARTTLS" capabilities) "STARTTLS\15\n")) :client-certificate t :use-starttls-if-possible t) apply(open-network-stream ("testing" #<buffer *debug> "smtp.gmail.com" 587 :type starttls :return-list t :warn-unless-encrypted t :capability-command "EHLO www.gnu.org\15\n" :end-of-command "^[0-9]+ .*\15\n" :success "^2.*\n" :always-query-capabilities t :starttls-function (lambda (capabilities) (and (string-match "[ -]STARTTLS" capabilities) "STARTTLS\15\n")) :client-certificate t :use-starttls-if-possible t)) timer-event-handler([t 24845 26710 703698 nil open-network-stream ("testing" #<buffer *debug> "smtp.gmail.com" 587 :type starttls :return-list t :warn-unless-encrypted t :capability-command "EHLO www.gnu.org\15\n" :end-of-command "^[0-9]+ .*\15\n" :success "^2.*\n" :always-query-capabilities t :starttls-function (lambda (capabilities) (and (string-match "[ -]STARTTLS" capabilities) "STARTTLS\15\n")) :client-certificate t :use-starttls-if-possible t) nil 536000]) Iʼd debug further, but I have other Emacs plans this weekend Robert -- ^ permalink raw reply [flat|nested] 30+ messages in thread
* bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs 2021-07-21 14:58 bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors 2021-07-21 15:14 ` Lars Ingebrigtsen @ 2021-07-21 19:29 ` Eli Zaretskii 2021-07-21 21:32 ` Lars Ingebrigtsen 2023-11-06 17:14 ` LdBeth 2 siblings, 1 reply; 30+ messages in thread From: Eli Zaretskii @ 2021-07-21 19:29 UTC (permalink / raw) To: Rajeev N; +Cc: 49682 > Date: Wed, 21 Jul 2021 10:58:22 -0400 > From: Rajeev N via "Bug reports for GNU Emacs, > the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org> > > (let () (run-with-timer 0 nil #'url-retrieve "https://www.gnu.org/" #'ignore) (diary-mail-entries)) Don't do that, because it will hurt. Mixing timers with subprocesses is asking for trouble. ^ permalink raw reply [flat|nested] 30+ messages in thread
* bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs 2021-07-21 19:29 ` Eli Zaretskii @ 2021-07-21 21:32 ` Lars Ingebrigtsen 2021-07-21 21:53 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors 2021-07-22 5:47 ` Eli Zaretskii 0 siblings, 2 replies; 30+ messages in thread From: Lars Ingebrigtsen @ 2021-07-21 21:32 UTC (permalink / raw) To: Eli Zaretskii; +Cc: Rajeev N, 49682 Eli Zaretskii <eliz@gnu.org> writes: >> (let () (run-with-timer 0 nil #'url-retrieve "https://www.gnu.org/" >> #'ignore) (diary-mail-entries)) > > Don't do that, because it will hurt. Mixing timers with subprocesses > is asking for trouble. That's not my experience, really -- url-queue.el is based around firing off `url-retrieve' from timers, and I've never seen any problems. -- (domestic pets only, the antidote for overdose, milk.) bloggy blog: http://lars.ingebrigtsen.no ^ permalink raw reply [flat|nested] 30+ messages in thread
* bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs 2021-07-21 21:32 ` Lars Ingebrigtsen @ 2021-07-21 21:53 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors 2021-07-22 5:47 ` Eli Zaretskii 1 sibling, 0 replies; 30+ messages in thread From: Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors @ 2021-07-21 21:53 UTC (permalink / raw) To: Lars Ingebrigtsen; +Cc: Eli Zaretskii, 49682 [-- Attachment #1: Type: text/html, Size: 884 bytes --] ^ permalink raw reply [flat|nested] 30+ messages in thread
* bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs 2021-07-21 21:32 ` Lars Ingebrigtsen 2021-07-21 21:53 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors @ 2021-07-22 5:47 ` Eli Zaretskii 2021-07-23 18:30 ` Dmitry Gutov 1 sibling, 1 reply; 30+ messages in thread From: Eli Zaretskii @ 2021-07-22 5:47 UTC (permalink / raw) To: Lars Ingebrigtsen; +Cc: rajeev.jnk, 49682 > From: Lars Ingebrigtsen <larsi@gnus.org> > Cc: Rajeev N <rajeev.jnk@sivalik.com>, 49682@debbugs.gnu.org > Date: Wed, 21 Jul 2021 23:32:16 +0200 > > Eli Zaretskii <eliz@gnu.org> writes: > > >> (let () (run-with-timer 0 nil #'url-retrieve "https://www.gnu.org/" > >> #'ignore) (diary-mail-entries)) > > > > Don't do that, because it will hurt. Mixing timers with subprocesses > > is asking for trouble. > > That's not my experience, really -- url-queue.el is based around firing > off `url-retrieve' from timers, and I've never seen any problems. Sheer luck, IMO. I don't really understand the need to run subprocesses from timers, since subprocess support already includes async operation and built-in time-outs. ^ permalink raw reply [flat|nested] 30+ messages in thread
* bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs 2021-07-22 5:47 ` Eli Zaretskii @ 2021-07-23 18:30 ` Dmitry Gutov 0 siblings, 0 replies; 30+ messages in thread From: Dmitry Gutov @ 2021-07-23 18:30 UTC (permalink / raw) To: Eli Zaretskii, Lars Ingebrigtsen; +Cc: rajeev.jnk, 49682 On 22.07.2021 08:47, Eli Zaretskii wrote: >> From: Lars Ingebrigtsen <larsi@gnus.org> >> Cc: Rajeev N <rajeev.jnk@sivalik.com>, 49682@debbugs.gnu.org >> Date: Wed, 21 Jul 2021 23:32:16 +0200 >> >> Eli Zaretskii <eliz@gnu.org> writes: >> >>>> (let () (run-with-timer 0 nil #'url-retrieve "https://www.gnu.org/" >>>> #'ignore) (diary-mail-entries)) >>> >>> Don't do that, because it will hurt. Mixing timers with subprocesses >>> is asking for trouble. >> >> That's not my experience, really -- url-queue.el is based around firing >> off `url-retrieve' from timers, and I've never seen any problems. > > Sheer luck, IMO. > > I don't really understand the need to run subprocesses from timers, > since subprocess support already includes async operation and built-in > time-outs. This is a fairly common configuration. Consider a minimal IDE setup: 1. Code completion popup which is shown when Emacs is idle for XX ms. 2. Eldoc hints which are shown at YY ms after the user stops typing. When both are implemented using HTTP calls, you get "timers with subprocesses". In fact, I have a configuration like that (based on url.el) and get an occasional strong freeze (one that requires 3 C-g's to get out of) about once every 1-2 weeks. Haven't found a solid repro so far, so if the reporter has something stable-ish, I'll be following this report intently. ^ permalink raw reply [flat|nested] 30+ messages in thread
* bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs 2021-07-21 14:58 bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors 2021-07-21 15:14 ` Lars Ingebrigtsen 2021-07-21 19:29 ` Eli Zaretskii @ 2023-11-06 17:14 ` LdBeth 2023-11-06 17:39 ` Eli Zaretskii 2 siblings, 1 reply; 30+ messages in thread From: LdBeth @ 2023-11-06 17:14 UTC (permalink / raw) To: 49682 This bug seems happened many times to me (on Emacs 29.1 macOS, with Mitsuharu's patches if that matters) whenever I open an multipart email that contains HTML that has several image links through IMAP in the Wanderlust email reader since I start to enable HTML images in the email reader. (And for some reason C-g seems not able to interrupt the hang) The shr library uses url-queue to asynchronously download images and Wanderlust also use `accept-process-output' call to handle IMAP. For this particular case I used a dirty hack (define-advice accept-process-output (:before (&rest _) sync-queue) (when (fboundp 'url-queue-check-progress) (funcall #'url-queue-check-progress))) However, could we make `accept-process-output' atomic so the timer won't interrupt it? Or there is no reliable method yet to make any atomic operations in Emacs yet? --- ldbeth ^ permalink raw reply [flat|nested] 30+ messages in thread
* bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs 2023-11-06 17:14 ` LdBeth @ 2023-11-06 17:39 ` Eli Zaretskii 2023-11-06 20:27 ` LdBeth 2023-11-08 15:50 ` Kazuhiro Ito 0 siblings, 2 replies; 30+ messages in thread From: Eli Zaretskii @ 2023-11-06 17:39 UTC (permalink / raw) To: LdBeth; +Cc: 49682 > Date: Mon, 06 Nov 2023 11:14:18 -0600 > From: LdBeth <andpuke@foxmail.com> > > This bug seems happened many times to me (on Emacs 29.1 macOS, with > Mitsuharu's patches if that matters) whenever I open an multipart > email that contains HTML that has several image links through IMAP in > the Wanderlust email reader since I start to enable HTML images in the > email reader. (And for some reason C-g seems not able to interrupt the > hang) > > The shr library uses url-queue to asynchronously download images > and Wanderlust also use `accept-process-output' call to handle IMAP. > > For this particular case I used a dirty hack > > (define-advice accept-process-output > (:before (&rest _) sync-queue) > (when (fboundp 'url-queue-check-progress) > (funcall #'url-queue-check-progress))) > > However, could we make `accept-process-output' atomic so > the timer won't interrupt it? Or there is no reliable > method yet to make any atomic operations in Emacs yet? If a Lisp program wants to avoid timers during the call to accept-process-output, could perhaps temporarily bind timer-list to nil or something? ^ permalink raw reply [flat|nested] 30+ messages in thread
* bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs 2023-11-06 17:39 ` Eli Zaretskii @ 2023-11-06 20:27 ` LdBeth 2023-11-07 9:24 ` Michael Albinus 2023-11-08 15:50 ` Kazuhiro Ito 1 sibling, 1 reply; 30+ messages in thread From: LdBeth @ 2023-11-06 20:27 UTC (permalink / raw) To: Eli Zaretskii; +Cc: 49682 >>>>> In <83a5rq3hna.fsf@gnu.org> >>>>> Eli Zaretskii <eliz@gnu.org> wrote: ldb> The shr library uses url-queue to asynchronously download images ldb> and Wanderlust also use `accept-process-output' call to handle ldb> IMAP. ldb> ldb> For this particular case I used a dirty hack ldb> ldb> (define-advice accept-process-output ldb> (:before (&rest _) sync-queue) ldb> (when (fboundp 'url-queue-check-progress) ldb> (funcall #'url-queue-check-progress))) ldb> ldb> However, could we make `accept-process-output' atomic so the ldb> timer won't interrupt it? Or there is no reliable method yet to ldb> make any atomic operations in Emacs yet? Eli> If a Lisp program wants to avoid timers during the call to Eli> accept-process-output, could perhaps temporarily bind timer-list Eli> to nil or something? Thank you, let Wanderlust maintainers know and figure out changes needed to fix the problem. --- ldbeth ^ permalink raw reply [flat|nested] 30+ messages in thread
* bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs 2023-11-06 20:27 ` LdBeth @ 2023-11-07 9:24 ` Michael Albinus 0 siblings, 0 replies; 30+ messages in thread From: Michael Albinus @ 2023-11-07 9:24 UTC (permalink / raw) To: LdBeth; +Cc: Eli Zaretskii, 49682 LdBeth <andpuke@foxmail.com> writes: Hi, > Eli> If a Lisp program wants to avoid timers during the call to > Eli> accept-process-output, could perhaps temporarily bind timer-list > Eli> to nil or something? > > Thank you, let Wanderlust maintainers know and figure out > changes needed to fix the problem. FTR, you could check tramp.el in the Emacs git repository. There is the macro with-tramp-suspended-timers, which is used in tramp-accept-process-output. Just as example. > ldbeth Best regards, Michael. ^ permalink raw reply [flat|nested] 30+ messages in thread
* bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs 2023-11-06 17:39 ` Eli Zaretskii 2023-11-06 20:27 ` LdBeth @ 2023-11-08 15:50 ` Kazuhiro Ito 2023-11-08 16:37 ` Eli Zaretskii 1 sibling, 1 reply; 30+ messages in thread From: Kazuhiro Ito @ 2023-11-08 15:50 UTC (permalink / raw) To: LdBeth, Eli Zaretskii; +Cc: 49682 > If a Lisp program wants to avoid timers during the call to > accept-process-output, could perhaps temporarily bind timer-list to > nil or something? According to docstring, it seems that accept-process-output has option not to run timers. > (accept-process-output &optional PROCESS SECONDS MILLISEC > JUST-THIS-ONE) ... > If JUST-THIS-ONE is an integer, don’t run any timers either. Can Lisp programs use the feature? -- Kazuhiro Ito ^ permalink raw reply [flat|nested] 30+ messages in thread
* bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs 2023-11-08 15:50 ` Kazuhiro Ito @ 2023-11-08 16:37 ` Eli Zaretskii 0 siblings, 0 replies; 30+ messages in thread From: Eli Zaretskii @ 2023-11-08 16:37 UTC (permalink / raw) To: Kazuhiro Ito; +Cc: andpuke, 49682 > Date: Thu, 09 Nov 2023 00:50:37 +0900 > From: Kazuhiro Ito <kzhr@d1.dion.ne.jp> > Cc: 49682@debbugs.gnu.org > > > If a Lisp program wants to avoid timers during the call to > > accept-process-output, could perhaps temporarily bind timer-list to > > nil or something? > > According to docstring, it seems that accept-process-output has option > not to run timers. > > > (accept-process-output &optional PROCESS SECONDS MILLISEC > > JUST-THIS-ONE) > ... > > If JUST-THIS-ONE is an integer, don’t run any timers either. > > Can Lisp programs use the feature? If they are okay with receiving output only from PROCESS, yes, they can. ^ permalink raw reply [flat|nested] 30+ messages in thread
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2021-07-21 14:58 bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-07-21 15:14 ` Lars Ingebrigtsen
2021-07-21 16:14 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-07-21 16:18 ` Lars Ingebrigtsen
[not found] ` <87tukntz2m.fsf@hm.sivalik.com>
2021-07-21 16:40 ` Lars Ingebrigtsen
2021-07-23 17:00 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-07-24 10:28 ` Lars Ingebrigtsen
2021-07-24 10:46 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-07-26 18:58 ` Dmitry Gutov
2021-07-26 19:54 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-07-26 20:22 ` Dmitry Gutov
2021-07-26 20:55 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-07-27 14:13 ` Dmitry Gutov
2021-07-27 17:22 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-07-27 17:35 ` Eli Zaretskii
2021-07-27 21:40 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-07-28 16:12 ` Eli Zaretskii
2021-07-28 17:12 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-08-06 16:55 ` Robert Pluim
2021-07-21 19:29 ` Eli Zaretskii
2021-07-21 21:32 ` Lars Ingebrigtsen
2021-07-21 21:53 ` Rajeev N via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-07-22 5:47 ` Eli Zaretskii
2021-07-23 18:30 ` Dmitry Gutov
2023-11-06 17:14 ` LdBeth
2023-11-06 17:39 ` Eli Zaretskii
2023-11-06 20:27 ` LdBeth
2023-11-07 9:24 ` Michael Albinus
2023-11-08 15:50 ` Kazuhiro Ito
2023-11-08 16:37 ` Eli Zaretskii
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