* Re: [PATCH v7] tty: fix hang on tty device with no_room set [not found] ` <ZCuQO3A6FX305KTJ@debian.me> @ 2023-04-04 2:55 ` Bagas Sanjaya 2023-04-04 7:02 ` caelli 0 siblings, 1 reply; 2+ messages in thread From: Bagas Sanjaya @ 2023-04-04 2:55 UTC (permalink / raw) To: juanfengpy Cc: Hui Li, stable, Ilpo Järvinen, Greg Kroah-Hartman, Linux Kernel Mailing List On 4/4/23 09:49, Bagas Sanjaya wrote: > On Fri, Mar 17, 2023 at 10:24:07AM +0800, juanfengpy@gmail.com wrote: >> We have met a hang on pty device, the reader was blocking >> at epoll on master side, the writer was sleeping at wait_woken >> inside n_tty_write on slave side, and the write buffer on >> tty_port was full, we found that the reader and writer would >> never be woken again and blocked forever. > > Where do you find this hanging pty? Seems like the wording makes me > confused. Maybe you mean "It is possible to hang pty device. In that > case, ..." > Oops, I forgot to Cc: LKML. -- An old man doll... just what I always wanted! - Clara ^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH v7] tty: fix hang on tty device with no_room set 2023-04-04 2:55 ` [PATCH v7] tty: fix hang on tty device with no_room set Bagas Sanjaya @ 2023-04-04 7:02 ` caelli 0 siblings, 0 replies; 2+ messages in thread From: caelli @ 2023-04-04 7:02 UTC (permalink / raw) To: Bagas Sanjaya Cc: Hui Li, stable, Ilpo Järvinen, Greg Kroah-Hartman, Linux Kernel Mailing List > Where do you find this hanging pty? Seems like the wording makes me > confused. Maybe you mean "It is possible to hang pty device. In that > case, ..." Thanks for your reply, I will correct messages like this: "It is possible to hang pty devices in this case, the reader was blocking at epoll on master side, the writer was ..." Bagas Sanjaya <bagasdotme@gmail.com> 于2023年4月4日周二 10:55写道： > > On 4/4/23 09:49, Bagas Sanjaya wrote: > > On Fri, Mar 17, 2023 at 10:24:07AM +0800, juanfengpy@gmail.com wrote: > >> We have met a hang on pty device, the reader was blocking > >> at epoll on master side, the writer was sleeping at wait_woken > >> inside n_tty_write on slave side, and the write buffer on > >> tty_port was full, we found that the reader and writer would > >> never be woken again and blocked forever. > > > > Where do you find this hanging pty? Seems like the wording makes me > > confused. Maybe you mean "It is possible to hang pty device. In that > > case, ..." > > > > Oops, I forgot to Cc: LKML. > > -- > An old man doll... just what I always wanted! - Clara > ^ permalink raw reply [flat|nested] 2+ messages in thread
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2023-04-04 2:55 ` [PATCH v7] tty: fix hang on tty device with no_room set Bagas Sanjaya
2023-04-04 7:02 ` caelli
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