[syzbot] Monthly serial report (Jan 2026)

[syzbot] 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>  3669    Yes   possible deadlock in console_lock_spinning_enable (5)
                   https://syzkaller.appspot.com/bug?extid=622acb507894a48b2ce9
<2>  3002    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>  261     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

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