assert "tname->unp_anflicag: s k&e rnUeNlV EIdLi_agUnSoEsRtSiEcT "a sfsaeritlieod:n f"i!l_eke r"n/eslyz_lkoack_held()"

[syzbot]

Hello,

syzbot found the following crash on:

HEAD commit: 13a73e99 Fix a precedence problem.
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=127f6f4d200000
kernel config: https://syzkaller.appspot.com/x/.config?x=fa145722143cbd64
dashboard link: https://syzkaller.appspot.com/bug?extid=81150f0c2e0bc67c26c8

Unfortunately, I don't have any reproducer for this crash yet.

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+81150f...@syzkaller.appspotmail.com

panic: kernel diagnostic assertion "tname->unp_anflicag: s k&e rnUeNlV
EIdLi_agUnSoEsRtSiEcT "a sfsaeritlieod:n f"i!l_eke
r"n/eslyz_lkoack_held()" failed:
file "/syzkaller/managers/multicore/kernel/sys/kern/kern_fork.c", line 689
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*500324 90802 0 0 0x4000000 1 syz-executor.1
343198 77385 0 0 0x4000000 0 syz-executor.0
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic() at panic+0x174 sys/kern/subr_prf.c:208
__assert(ffffffff81f7cec5,ffffffff81f6c058,2b1,ffffffff81f4ee5e) at
__assert+0x2e sys/kern/subr_prf.c:155
proc_trampoline_mp() at proc_trampoline_mp+0x13b
end trace frame: 0x0, count: 11
https://www.openbsd.org/ddb.html describes the minimum info required in bug
reports. Insufficient info makes it difficult to find and fix bugs.


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[Anton Lindqvist]

#syz dup: assert "tname->un_flags & UNVEIL_USERSET" failed in kern_unveil.c