panic: sleep: syz-executor[9746] slept inside a no-sleep walk bracket (raw pointer held across sleep, wmesg "biowait")
Stopped at      db_enter+0x17:  popq    %rbp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*303889   9746      0           0  0x4000010    1K syz-executor
 230446  69384      0         0x2        0x1    0  syz-executor
db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457
panic(ffffffff84d8d160) at panic+0x270 sys/kern/subr_prf.c:198
sleep_setup(ffff800001bd7440,11,ffffffff84692f80) at sleep_setup+0x3b2 sys/kern/kern_synch.c:296
tsleep_nsec(ffff800001bd7440,11,ffffffff84692f80,ffffffffffffffff) at tsleep_nsec+0x29c sys/kern/kern_synch.c:153
biowait(ffff800001bd7440) at biowait+0xe6 sys/kern/vfs_bio.c:1110
bwrite(ffff800001bd7440) at bwrite+0x4e1 sys/kern/vfs_bio.c:625
ffs_update(ffff800001aa8280,1) at ffs_update+0x619 sys/ufs/ffs/ffs_inode.c:111
ffs_truncate(ffff800001aa8280,0,0,ffffffffffffffff) at ffs_truncate+0x12f0 sys/ufs/ffs/ffs_inode.c:-1
ufs_inactive(ffff8000299683a0) at ufs_inactive+0x2cb sys/ufs/ufs/ufs_inode.c:84
VOP_INACTIVE(ffff800001b7c560,ffff800045ff6d18) at VOP_INACTIVE+0x1bb sys/kern/vfs_vops.c:498
vrele(ffff800001b7c560) at vrele+0x16a sys/kern/vfs_subr.c:845
ktrsettrace(ffff800029916690,80000814,ffff800001df11c8,ffff8000001197b8) at ktrsettrace+0x16c sys/kern/kern_ktrace.c:123
ktrops(ffff800045ff6d18,ffff800029916690,0,80000814,ffff800001df11c8,ffff8000001197b8) at ktrops+0x338 sys/kern/kern_ktrace.c:578
doktrace(ffff800001df11c8,4,814,0,ffff800045ff6d18) at doktrace+0xa72 ktrsetchildren sys/kern/kern_ktrace.c:607 [inline]
doktrace(ffff800001df11c8,4,814,0,ffff800045ff6d18) at doktrace+0xa72 sys/kern/kern_ktrace.c:522
end trace frame: 0xffff800029968890, count: 0
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reports.  Insufficient info makes it difficult to find and fix bugs.
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ddb{1}> set $maxwidth = 0
ddb{1}>