[syzbot-moderation] Monthly serial report (Jan 2026)

[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, 15 issues are still open and 45 have already been fixed.

Some of the still happening issues:

Ref Crashes Repro Title
<1> 3666 Yes possible deadlock in console_lock_spinning_enable (5)
https://syzkaller.appspot.com/bug?extid=622acb507894a48b2ce9
<2> 3001 Yes KMSAN: uninit-value in n_tty_receive_buf_standard
https://syzkaller.appspot.com/bug?extid=559c7fe4b8bac56d38c2
<3> 265 Yes KASAN: slab-use-after-free Read in tty_write_room (2)
https://syzkaller.appspot.com/bug?extid=2a81fdd5c6ddffee3894
<4> 259 Yes KMSAN: uninit-value in n_tty_receive_buf_closing (3)
https://syzkaller.appspot.com/bug?extid=dd514b5f0cf048aec256
<5> 238 Yes INFO: task can't die in show_free_areas
https://syzkaller.appspot.com/bug?extid=8f41dccfb6c03cc36fd6
<6> 120 Yes possible deadlock in tty_buffer_flush (3)
https://syzkaller.appspot.com/bug?extid=52cf91760dcb1dac6376
<7> 53 No KMSAN: uninit-value in n_tty_lookahead_flow_ctrl (2)
https://syzkaller.appspot.com/bug?extid=290abdcd4f509377a0eb
<8> 18 Yes INFO: rcu detected stall in console_callback
https://syzkaller.appspot.com/bug?extid=32af18ae7b894a681f2d
<9> 6 Yes INFO: task hung in paste_selection (2)
https://syzkaller.appspot.com/bug?extid=275e275bd3f536725dd8
<10> 3 No possible deadlock in stop_tty
https://syzkaller.appspot.com/bug?extid=7ca5a40e8164fe2609fd

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

---
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[Aleksandr Nogikh]

#syz upstream

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