panic: vop_generic_bpaadonipc

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: e7c9998b3b25 dmesg(8): don't accept positional arguments
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=104073b1080000
kernel config: https://syzkaller.appspot.com/x/.config?x=7058272de1526588
dashboard link: https://syzkaller.appspot.com/bug?extid=fb0b8c86a5b964ed3987

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

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+fb0b8c...@syzkaller.appspotmail.com

panic: vop_generic_bpaadonipc
: Sktearrtnienl g dsitagacnko sttiracc ae.ss..er
tion "!_kernel_lock_held(p)a" nfiac(iffffffff825964dc) at panic+0x16b sys/kern/subr_prf.c:233
vop_generic_badop(ffff80002477e138) at vop_generic_badop+0x1b sys/kern/vfs_default.c:133
VOP_STRATEGY(fffffd80663b9538,fffffd8072fde4c0) at VOP_STRATEGY+0x9b sys/kern/vfs_vops.c:628
bwrite(fffffd8072fde4c0) at bwrite+0x1f0 sys/kern/vfs_bio.c:763
VOP_BWRITE(fffffd8072fde4c0) at VOP_BWRITE+0x4a sys/kern/vfs_vops.c:640
ufs_mkdir(ffff80002477e3d0) at ufs_mkdir+0x6b4 sys/ufs/ufs/ufs_vnops.c:1236
VOP_MKDIR(fffffd807e549af8,ffff80002477e530,ffff80002477e560,ffff80002477e460) at VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388
domkdirat(ffff800021258540,ffffff9c,7f7fffffb7e0,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3116
syscall(ffff80002477e6e0) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff80002477e6e0) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7fffffb850, count: 247
End of stack trace.


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[Greg Steuck]

#syz invalid

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