[syzbot-moderation] Monthly serial report (Nov 2025)

[syzbot]

Hello serial maintainers/developers,

This is a 31-day syzbot report for the serial subsystem.
All related reports/information can be found at:
https://syzkaller.appspot.com/upstream/s/serial

During the period, 1 new issues were detected and 0 were fixed.
In total, 20 issues are still open and 45 have already been fixed.

Some of the still happening issues:

Ref Crashes Repro Title
<1> 2640 Yes possible deadlock in console_lock_spinning_enable (5)
https://syzkaller.appspot.com/bug?extid=622acb507894a48b2ce9
<2> 2085 Yes KMSAN: uninit-value in n_tty_receive_buf_standard
https://syzkaller.appspot.com/bug?extid=559c7fe4b8bac56d38c2
<3> 1095 Yes BUG: soft lockup in tx
https://syzkaller.appspot.com/bug?extid=5e87db90e68fbc4707c6
<4> 228 Yes KASAN: slab-use-after-free Read in tty_write_room (2)
https://syzkaller.appspot.com/bug?extid=2a81fdd5c6ddffee3894
<5> 225 Yes INFO: task can't die in show_free_areas
https://syzkaller.appspot.com/bug?extid=8f41dccfb6c03cc36fd6
<6> 203 Yes KMSAN: uninit-value in n_tty_receive_buf_closing (3)
https://syzkaller.appspot.com/bug?extid=dd514b5f0cf048aec256
<7> 166 Yes KASAN: stack-out-of-bounds Read in sched_show_task
https://syzkaller.appspot.com/bug?extid=8d2757d62d403b2d9275
<8> 117 Yes possible deadlock in tty_buffer_flush (3)
https://syzkaller.appspot.com/bug?extid=52cf91760dcb1dac6376
<9> 86 No possible deadlock in kbd_event
https://syzkaller.appspot.com/bug?extid=781c8bb5e4d62cc883d3
<10> 40 No KMSAN: uninit-value in n_tty_lookahead_flow_ctrl (2)
https://syzkaller.appspot.com/bug?extid=290abdcd4f509377a0eb

The report will be sent to: [linux-...@vger.kernel.org gre...@linuxfoundation.org linux-...@vger.kernel.org].

---
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[Aleksandr Nogikh]

#syz regenerate

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[syzbot]

Hello serial maintainers/developers,

This is a 31-day syzbot report for the serial subsystem.
All related reports/information can be found at:
https://syzkaller.appspot.com/upstream/s/serial

During the period, 1 new issues were detected and 0 were fixed.

In total, 19 issues are still open and 45 have already been fixed.

Some of the still happening issues:

Ref Crashes Repro Title

<1> 2655 Yes possible deadlock in console_lock_spinning_enable (5)
https://syzkaller.appspot.com/bug?extid=622acb507894a48b2ce9
<2> 2113 Yes KMSAN: uninit-value in n_tty_receive_buf_standard
https://syzkaller.appspot.com/bug?extid=559c7fe4b8bac56d38c2
<3> 1101 Yes BUG: soft lockup in tx
https://syzkaller.appspot.com/bug?extid=5e87db90e68fbc4707c6
<4> 232 Yes KASAN: slab-use-after-free Read in tty_write_room (2)

https://syzkaller.appspot.com/bug?extid=2a81fdd5c6ddffee3894
<5> 225 Yes INFO: task can't die in show_free_areas
https://syzkaller.appspot.com/bug?extid=8f41dccfb6c03cc36fd6
<6> 203 Yes KMSAN: uninit-value in n_tty_receive_buf_closing (3)
https://syzkaller.appspot.com/bug?extid=dd514b5f0cf048aec256
<7> 166 Yes KASAN: stack-out-of-bounds Read in sched_show_task
https://syzkaller.appspot.com/bug?extid=8d2757d62d403b2d9275
<8> 117 Yes possible deadlock in tty_buffer_flush (3)
https://syzkaller.appspot.com/bug?extid=52cf91760dcb1dac6376

<9> 88 No possible deadlock in kbd_event
https://syzkaller.appspot.com/bug?extid=781c8bb5e4d62cc883d3
<10> 41 No KMSAN: uninit-value in n_tty_lookahead_flow_ctrl (2)

[Aleksandr Nogikh]

#syz upstream

On Thu, Nov 27, 2025 at 1:32 PM syzbot

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