panic: ffs_blkfree: freeing free frag
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syzbot
Sep 25, 2024, 3:53:25 AM (4 days ago) Sep 25
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 208893442c38 add device tree mapping for HP OmniBook X 14 ..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=12cc4a80580000
kernel config: https://syzkaller.appspot.com/x/.config?x=7058272de1526588
dashboard link: https://syzkaller.appspot.com/bug?extid=8c1a9ad3a38157ba876e
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/8d061f82701e/disk-20889344.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/7648d5cace80/bsd-20889344.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/882bcb3109dc/kernel-20889344.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+8c1a9a...@syzkaller.appspotmail.com
panic: ffs_blkfree: freeing free frag
Stopped at db_enter+0x25: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*161095 34647 0 0x2 0 1K syz-executor
379162 96142 0 0x2 0 0 syz-executor
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8309eb83) at panic+0x1e5 sys/kern/subr_prf.c:198
ffs_blkfree(fffffd8076bc0780,505e3,800) at ffs_blkfree+0xcc9 sys/ufs/ffs/ffs_alloc.c:1259
ffs_truncate(fffffd8076bc0780,0,4,fffffd807f7d3068) at ffs_truncate+0x139f sys/ufs/ffs/ffs_inode.c:325
ufs_rmdir(ffff80002a13e3b8) at ufs_rmdir+0x374 sys/ufs/ufs/ufs_vnops.c:1265
VOP_RMDIR(fffffd806bc4e980,fffffd8078e47030,ffff80002a13e498) at VOP_RMDIR+0x19a sys/kern/vfs_vops.c:413
dounlinkat(ffff80002a038020,ffffff9c,7190809396b0,8) at dounlinkat+0x2e0 sys/kern/vfs_syscalls.c:1885
syscall(ffff80002a13e610) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff80002a13e610) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7190809396a0, count: 6
https://www.openbsd.org/ddb.html describes the minimum info required in bug
reports. Insufficient info makes it difficult to find and fix bugs.
ddb{1}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu1: ffs_blkfree: freeing free frag
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8309eb83) at panic+0x1e5 sys/kern/subr_prf.c:198
ffs_blkfree(fffffd8076bc0780,505e3,800) at ffs_blkfree+0xcc9 sys/ufs/ffs/ffs_alloc.c:1259
ffs_truncate(fffffd8076bc0780,0,4,fffffd807f7d3068) at ffs_truncate+0x139f sys/ufs/ffs/ffs_inode.c:325
ufs_rmdir(ffff80002a13e3b8) at ufs_rmdir+0x374 sys/ufs/ufs/ufs_vnops.c:1265
VOP_RMDIR(fffffd806bc4e980,fffffd8078e47030,ffff80002a13e498) at VOP_RMDIR+0x19a sys/kern/vfs_vops.c:413
dounlinkat(ffff80002a038020,ffffff9c,7190809396b0,8) at dounlinkat+0x2e0 sys/kern/vfs_syscalls.c:1885
syscall(ffff80002a13e610) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff80002a13e610) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7190809396a0, count: -9
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff80002a13dfb0
rbx 0xffff800029b7cd87
rdx 0
rcx 0xffff80002a038020
rax 0xffff800029b7bff0
r8 0x101010101010101
r9 0x8080808080808080
r10 0x7faafe67fd58f10
r11 0x324223e87932e4
r12 0xffff800029b7cb88
r13 0
r14 0
r15 0x1
rip 0xffffffff826b1a55 db_enter+0x25
cs 0x8
rflags 0x246
rsp 0xffff80002a13dfa0
ss 0x10
db_enter+0x25: addq $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor) tid=161095 pid=34647 tcnt=1 stat=onproc
flags process=2<EXEC> proc=0
runpri=17, usrpri=79, slppri=17, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80002a038530,0xffff80002a0382b8
process=0xffff800034992460 user=0xffff80002a139000, vmspace=0xfffffd806bc1e370
estcpu=36, cpticks=0, pctcpu=0.1, user=1, sys=3, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
27214 94895 93938 0 3 0x80 nanoslp syz-executor
27214 186252 93938 0 3 0x4000080 kqpoll syz-executor
27214 451532 93938 0 3 0x4000080 fsleep syz-executor
27214 494565 93938 0 3 0x4000080 fsleep syz-executor
93756 262628 14872 0 3 0x82 netio sshd-session
*34647 161095 1375 0 7 0x2 syz-executor
93938 216477 1375 0 3 0x82 nanoslp syz-executor
30373 88262 1375 0 2 0x2 syz-executor
80395 7138 1375 0 3 0x82 wait syz-executor
55236 494657 1375 0 3 0x82 nanoslp syz-executor
96142 379162 1375 0 7 0x2 syz-executor
1375 323330 14155 0 3 0x82 wait syz-executor
14155 59695 37920 0 3 0x10008a sigsusp ksh
37920 244247 77915 0 3 0x98 kqread sshd-session
77915 208445 14872 0 3 0x92 kqread sshd-session
90965 394373 1 0 3 0x100083 ttyin getty
14872 476811 1 0 3 0x88 kqread sshd
25347 513120 52385 74 3 0x1100092 bpf pflogd
52385 220622 1 0 3 0x80 sbwait pflogd
25840 252738 71287 73 3 0x1100090 kqread syslogd
71287 365658 1 0 3 0x100082 sbwait syslogd
38832 83534 1 0 3 0x100080 kqread resolvd
74636 75330 95748 77 3 0x100092 kqread dhcpleased
39649 1459 95748 77 3 0x100092 kqread dhcpleased
95748 71415 1 0 3 0x80 kqread dhcpleased
36107 91533 0 0 3 0x14200 bored smr
54348 457151 0 0 3 0x14200 pgzero zerothread
51275 182954 0 0 3 0x14200 aiodoned aiodoned
63626 125469 0 0 3 0x14200 syncer update
78895 461130 0 0 3 0x14200 cleaner cleaner
92234 242328 0 0 3 0x14200 reaper reaper
19202 263281 0 0 3 0x14200 pgdaemon pagedaemon
77113 65413 0 0 3 0x14200 bored viomb
73405 356272 0 0 3 0x40014200 acpi0 acpi0
70761 251972 0 0 3 0x40014200 idle1
71116 360670 0 0 3 0x14200 bored softnet3
43631 159268 0 0 3 0x14200 bored softnet2
201 380960 0 0 3 0x14200 bored softnet1
4447 400968 0 0 3 0x14200 bored softnet0
51434 386111 0 0 3 0x14200 bored systqmp
36358 231132 0 0 3 0x14200 bored systq
63405 129079 0 0 3 0x14200 tmoslp softclockmp
11498 343541 0 0 3 0x40014200 tmoslp softclock
35044 77170 0 0 3 0x40014200 idle0
1 288969 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 34647 (syz-executor) thread 0xffff80002a038020 (161095)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff835a3c08)
#0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1 __mp_acquire_count+0x58
#2 mi_switch+0x658 sys/kern/sched_bsd.c:460
#3 sleep_finish+0x219 sys/kern/kern_synch.c:416
#4 biowait+0xc1 sys/kern/vfs_bio.c:1254
#5 ffs_blkfree+0x16e ffs_cgread sys/ufs/ffs/ffs_alloc.c:850 [inline]
#5 ffs_blkfree+0x16e sys/ufs/ffs/ffs_alloc.c:1272
#6 ffs_truncate+0x139f sys/ufs/ffs/ffs_inode.c:325
#7 ufs_rmdir+0x374 sys/ufs/ufs/ufs_vnops.c:1265
#8 VOP_RMDIR+0x19a sys/kern/vfs_vops.c:413
#9 dounlinkat+0x2e0 sys/kern/vfs_syscalls.c:1885
#10 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#10 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd8076bc0818)
#0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1 rw_enter+0x41b sys/kern/kern_rwlock.c:309
#2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464
#3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564
#5 vget+0x2bd sys/kern/vfs_subr.c:676
#6 ufs_ihashget+0x192 sys/ufs/ufs/ufs_ihash.c:98
#7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201
#8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478
#9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
#10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566
#11 namei+0x7aa sys/kern/vfs_lookup.c:250
#12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852
#13 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#13 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd8076bc05f8)
#0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1 rw_enter+0x41b sys/kern/kern_rwlock.c:309
#2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464
#3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564
#5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418
#6 namei+0x7aa sys/kern/vfs_lookup.c:250
#7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852
#8 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#8 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#9 Xsyscall+0x128
Process 30373 (syz-executor) thread 0xffff80002a038a40 (88262)
exclusive rrwlock inode r = 0 (0xfffffd8076bc0e78)
#0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1 rw_enter+0x41b sys/kern/kern_rwlock.c:309
#2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464
#3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564
#5 vget+0x2bd sys/kern/vfs_subr.c:676
#6 ufs_ihashget+0x192 sys/ufs/ufs/ufs_ihash.c:98
#7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201
#8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478
#9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
#10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566
#11 namei+0x7aa sys/kern/vfs_lookup.c:250
#12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852
#13 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#13 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806058ee70)
#0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1 rw_enter+0x41b sys/kern/kern_rwlock.c:309
#2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464
#3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564
#5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418
#6 namei+0x7aa sys/kern/vfs_lookup.c:250
#7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852
#8 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#8 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#9 Xsyscall+0x128
Process 96142 (syz-executor) thread 0xffff8000ffffdbe8 (379162)
exclusive rrwlock inode r = 0 (0xfffffd8076bc0c58)
#0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1 rw_enter+0x41b sys/kern/kern_rwlock.c:309
#2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464
#3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564
#5 vget+0x2bd sys/kern/vfs_subr.c:676
#6 ufs_ihashget+0x192 sys/ufs/ufs/ufs_ihash.c:98
#7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201
#8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478
#9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
#10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566
#11 namei+0x7aa sys/kern/vfs_lookup.c:250
#12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852
#13 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#13 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd8076bc02c8)
#0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1 rw_enter+0x41b sys/kern/kern_rwlock.c:309
#2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464
#3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564
#5 vget+0x2bd sys/kern/vfs_subr.c:676
#6 cache_lookup+0x36e sys/kern/vfs_cache.c:222
#7 ufs_lookup+0x218 sys/ufs/ufs/ufs_lookup.c:160
#8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
#9 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566
#10 namei+0x7aa sys/kern/vfs_lookup.c:250
#11 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852
#12 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#12 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#13 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10192 14186K 14584K 166960K 11414 0
pcb 17 12K 12K 166960K 33 0
rtable 234 6K 6K 166960K 572 0
pf 35 17K 18K 166960K 67 0
ifaddr 43 7K 7K 166960K 78 0
ifgroup 55 2K 2K 166960K 89 0
counters 64 36K 36K 166960K 82 0
ioctlops 0 0K 4K 166960K 1504 0
iov 0 0K 16K 166960K 5 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1370 86K 86K 166960K 1555 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 5K 166960K 4 0
VM map 2 1K 1K 166960K 2 0
sem 6 0K 0K 166960K 6 0
dirhash 12 2K 2K 166960K 15 0
ACPI 1690 195K 286K 166960K 12418 0
file desc 13 45K 97K 166960K 345 0
sigio 0 0K 0K 166960K 3 0
proc 72 91K 128K 166960K 737 0
subproc 104 6K 6K 166960K 195 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 9 0
in_multi 99 7K 7K 166960K 180 0
ether_multi 1 0K 0K 166960K 1 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 61 281K 281K 166960K 61 0
exec 0 0K 1K 166960K 464 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 214 76K 78K 166960K 4134 0
UVM aobj 8 2K 2K 166960K 9 0
pinsyscall 40 80K 104K 166960K 1601 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 6 0
NDP 12 0K 2K 166960K 52 0
temp 37 6811K 6877K 166960K 5512 0
kqueue 14 22K 24K 166960K 41 0
SYN cache 2 16K 16K 166960K 2 0
ddb{1}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache 128 24 0 0 1 0 1 1 0 8 0
rtpcb 120 55 0 51 1 0 1 1 0 8 0
rtentry 112 192 0 82 4 0 4 4 0 8 0
unpcb 144 98 0 73 1 0 1 1 0 8 0
syncache 336 4 0 4 2 1 1 1 0 8 1
tcpcb 808 46 0 38 2 0 2 2 0 8 1
arp 120 33 0 15 1 0 1 1 0 8 0
inpcb 336 216 0 204 5 3 2 4 0 8 0
nd6 136 45 0 21 1 0 1 1 0 8 0
kcovpl 48 15 0 7 1 0 1 1 0 8 0
ppxss 1168 1 0 1 1 1 0 1 0 8 0
pfstscr 40 2 0 2 1 0 1 1 0 8 1
pffrag 232 1 0 1 1 0 1 1 0 482 1
pffrnode 88 1 0 1 1 0 1 1 0 8 1
pffrent 40 2 0 2 1 0 1 1 0 8 1
pfosfp 40 1428 0 1005 5 0 5 5 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfstitem 24 28 0 4 1 0 1 1 0 8 0
pfstkey 128 30 0 6 1 0 1 1 0 8 0
pfstate 376 29 0 5 3 0 3 3 0 8 0
pfrule 1344 22 0 16 2 0 2 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 796 0 339 31 0 31 31 0 8 1
art_table 32 797 0 339 4 0 4 4 0 8 0
art_node 16 191 0 91 1 0 1 1 0 8 0
sysvmsgpl 40 4 0 3 1 0 1 1 0 8 0
semapl 112 4 0 0 1 0 1 1 0 8 0
shmpl 112 6 0 1 1 0 1 1 0 8 0
dirhash 1024 19 0 2 3 0 3 3 0 8 0
dino2pl 256 1741 0 223 96 0 96 96 0 8 0
ffsino 272 1741 0 223 102 0 102 102 0 8 0
nchpl 144 2074 0 382 63 0 63 63 0 8 0
uvmvnodes 80 2000 0 0 41 0 41 41 0 8 0
vnodes 216 2000 0 0 112 0 112 112 0 8 0
namei 1024 7141 0 7141 2 1 1 2 0 8 1
percpumem 16 55 0 9 1 0 1 1 0 8 0
kstatmem 264 42 0 18 2 0 2 2 0 8 0
scxspl 216 8585 0 8585 4 3 1 2 1 8 1
plimitpl 152 50 0 33 1 0 1 1 0 8 0
sigapl 424 630 0 584 8 1 7 7 0 8 1
futexpl 64 1788 0 1786 2 1 1 1 0 8 0
knotepl 120 321 0 0 10 0 10 10 0 8 0
kqueuepl 216 46 0 36 1 0 1 1 0 8 0
pipepl 320 147 0 119 3 0 3 3 0 8 0
fdescpl 496 612 0 584 6 1 5 6 0 8 0
filepl 152 2296 0 2035 12 1 11 11 0 8 0
lockfpl 104 28 0 26 1 0 1 1 0 8 0
lockfspl 48 15 0 13 1 0 1 1 0 8 0
sessionpl 144 30 0 20 1 0 1 1 0 8 0
pgrppl 48 46 0 28 1 0 1 1 0 8 0
ucredpl 104 198 0 184 1 0 1 1 0 8 0
zombiepl 144 588 0 584 1 0 1 1 0 8 0
processpl 1160 630 0 584 5 1 4 5 0 8 0
procpl 648 808 0 759 8 2 6 6 0 8 0
srpgc 96 1 0 1 1 1 0 1 0 8 0
sockpl 664 370 0 329 7 3 4 6 0 8 0
mcl64k 65536 2 0 0 1 0 1 1 0 8 0
mcl8k 8192 4 0 0 1 0 1 1 0 8 0
mcl4k 4096 3 0 0 1 0 1 1 0 8 0
mcl2k2 2112 1 0 0 1 0 1 1 0 8 0
mcl2k 2048 155 0 0 20 0 20 20 0 8 0
mtagpl 96 8 0 0 1 0 1 1 0 8 0
mbufpl 256 221 0 0 15 1 14 14 0 8 0
bufpl 280 4891 0 97 343 0 343 343 0 8 0
anonpl 24 61288 0 57890 51 1 50 50 0 185 27
amapchunkpl 152 11365 0 10959 30 1 29 29 0 158 8
amappl16 200 169 0 154 2 0 2 2 0 8 0
amappl15 192 1 0 1 1 1 0 1 0 8 0
amappl14 184 121 0 108 1 0 1 1 0 8 0
amappl12 168 1397 0 1368 4 1 3 3 0 8 1
amappl11 160 46 0 32 1 0 1 1 0 8 0
amappl10 152 4 0 2 1 0 1 1 0 8 0
amappl9 144 17 0 17 1 1 0 1 0 8 0
amappl8 136 14 0 12 1 0 1 1 0 8 0
amappl7 128 112 0 99 1 0 1 1 0 8 0
amappl6 120 225 0 224 1 0 1 1 0 8 0
amappl5 112 153 0 141 1 0 1 1 0 8 0
amappl4 104 325 0 305 1 0 1 1 0 8 0
amappl3 96 3065 0 2974 4 0 4 4 0 8 1
amappl2 88 774 0 699 2 0 2 2 0 8 0
amappl1 80 8794 0 8157 14 0 14 14 0 8 0
amappl 88 3704 0 3558 5 0 5 5 0 92 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma1024 1024 1 0 0 1 0 1 1 0 8 0
dma512 512 1 0 1 1 0 1 1 0 8 1
dma256 256 6 0 6 1 1 0 1 0 8 0
dma128 128 253 0 253 1 1 0 1 0 8 0
dma64 64 6 0 6 1 1 0 1 0 8 0
dma32 32 7 0 7 1 1 0 1 0 8 0
dma16 16 18 0 17 1 0 1 1 0 8 0
aobjpl 72 8 0 1 1 0 1 1 0 8 0
uaddrrnd 24 612 0 584 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 612 0 584 1 0 1 1 0 8 0
vmmpekpl 168 6564 0 6505 3 0 3 3 0 8 0
vmmpepl 168 42435 0 40657 92 2 90 90 0 357 2
vmsppl 440 611 0 584 6 1 5 5 0 8 1
rwobjpl 56 15527 0 12531 43 0 43 43 0 8 0
pdppl 4096 1231 0 1168 111 38 73 87 0 8 10
pvpl 32 26686 0 0 216 0 216 216 0 265 0
pmappl 248 611 0 584 3 0 3 3 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 398 0 47 11 0 11 11 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffffffff83472ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:589 [inline]
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:158
__mp_lock(ffffffff835a3a00) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline]
__mp_lock(ffffffff835a3a00) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144
__mp_acquire_count(ffffffff835a3a00,1) at __mp_acquire_count+0x58
mi_switch() at mi_switch+0x658 sys/kern/sched_bsd.c:460
sleep_finish(0,1) at sleep_finish+0x219 sys/kern/kern_synch.c:416
getblk(fffffd807e82a510,12fcc0,4000,0,ffffffffffffffff) at getblk+0x197 sys/kern/vfs_bio.c:1025
bread(fffffd807e82a510,12fcc0,4000,ffff80002a0bc678) at bread+0x47 bio_doread sys/kern/vfs_bio.c:430 [inline]
bread(fffffd807e82a510,12fcc0,4000,ffff80002a0bc678) at bread+0x47 sys/kern/vfs_bio.c:475
ffs_freefile(fffffd8076bc0bc0,135a6,2000) at ffs_freefile+0xbe ffs_cgread sys/ufs/ffs/ffs_alloc.c:850 [inline]
ffs_freefile(fffffd8076bc0bc0,135a6,2000) at ffs_freefile+0xbe sys/ufs/ffs/ffs_alloc.c:1377
ffs_inode_free(fffffd8076bc0bc0,135a6,2000) at ffs_inode_free+0x44 sys/ufs/ffs/ffs_alloc.c:1355
ufs_inactive(ffff80002a0bc7d8) at ufs_inactive+0x29d sys/ufs/ufs/ufs_inode.c:94
VOP_INACTIVE(fffffd806ba15e90,ffff8000ffffdbe8) at VOP_INACTIVE+0x107 sys/kern/vfs_vops.c:495
end trace frame: 0xffff80002a0bc860, count: 0
ddb{0}> trace
x86_ipi_db(ffffffff83472ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:589 [inline]
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:158
__mp_lock(ffffffff835a3a00) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline]
__mp_lock(ffffffff835a3a00) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144
__mp_acquire_count(ffffffff835a3a00,1) at __mp_acquire_count+0x58
mi_switch() at mi_switch+0x658 sys/kern/sched_bsd.c:460
sleep_finish(0,1) at sleep_finish+0x219 sys/kern/kern_synch.c:416
getblk(fffffd807e82a510,12fcc0,4000,0,ffffffffffffffff) at getblk+0x197 sys/kern/vfs_bio.c:1025
bread(fffffd807e82a510,12fcc0,4000,ffff80002a0bc678) at bread+0x47 bio_doread sys/kern/vfs_bio.c:430 [inline]
bread(fffffd807e82a510,12fcc0,4000,ffff80002a0bc678) at bread+0x47 sys/kern/vfs_bio.c:475
ffs_freefile(fffffd8076bc0bc0,135a6,2000) at ffs_freefile+0xbe ffs_cgread sys/ufs/ffs/ffs_alloc.c:850 [inline]
ffs_freefile(fffffd8076bc0bc0,135a6,2000) at ffs_freefile+0xbe sys/ufs/ffs/ffs_alloc.c:1377
ffs_inode_free(fffffd8076bc0bc0,135a6,2000) at ffs_inode_free+0x44 sys/ufs/ffs/ffs_alloc.c:1355
ufs_inactive(ffff80002a0bc7d8) at ufs_inactive+0x29d sys/ufs/ufs/ufs_inode.c:94
VOP_INACTIVE(fffffd806ba15e90,ffff8000ffffdbe8) at VOP_INACTIVE+0x107 sys/kern/vfs_vops.c:495
vput(fffffd806ba15e90) at vput+0xe5 sys/kern/vfs_subr.c:779
VOP_REMOVE(fffffd8078e47a50,fffffd806ba15e90,ffff80002a0bc958) at VOP_REMOVE+0x19d sys/kern/vfs_vops.c:336
dounlinkat(ffff8000ffffdbe8,ffffff9c,7b8b901f3a30,0) at dounlinkat+0x177 sys/kern/vfs_syscalls.c:1888
syscall(ffff80002a0bcad0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff80002a0bcad0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7b8b901f3ee0, count: -19
ddb{0}> machine ddbcpu 1
Stopped at db_enter+0x25: addq $0x8,%rsp
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8309eb83) at panic+0x1e5 sys/kern/subr_prf.c:198
ffs_blkfree(fffffd8076bc0780,505e3,800) at ffs_blkfree+0xcc9 sys/ufs/ffs/ffs_alloc.c:1259
ffs_truncate(fffffd8076bc0780,0,4,fffffd807f7d3068) at ffs_truncate+0x139f sys/ufs/ffs/ffs_inode.c:325
ufs_rmdir(ffff80002a13e3b8) at ufs_rmdir+0x374 sys/ufs/ufs/ufs_vnops.c:1265
VOP_RMDIR(fffffd806bc4e980,fffffd8078e47030,ffff80002a13e498) at VOP_RMDIR+0x19a sys/kern/vfs_vops.c:413
dounlinkat(ffff80002a038020,ffffff9c,7190809396b0,8) at dounlinkat+0x2e0 sys/kern/vfs_syscalls.c:1885
syscall(ffff80002a13e610) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff80002a13e610) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7190809396a0, count: 6
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8309eb83) at panic+0x1e5 sys/kern/subr_prf.c:198
ffs_blkfree(fffffd8076bc0780,505e3,800) at ffs_blkfree+0xcc9 sys/ufs/ffs/ffs_alloc.c:1259
ffs_truncate(fffffd8076bc0780,0,4,fffffd807f7d3068) at ffs_truncate+0x139f sys/ufs/ffs/ffs_inode.c:325
ufs_rmdir(ffff80002a13e3b8) at ufs_rmdir+0x374 sys/ufs/ufs/ufs_vnops.c:1265
VOP_RMDIR(fffffd806bc4e980,fffffd8078e47030,ffff80002a13e498) at VOP_RMDIR+0x19a sys/kern/vfs_vops.c:413
dounlinkat(ffff80002a038020,ffffff9c,7190809396b0,8) at dounlinkat+0x2e0 sys/kern/vfs_syscalls.c:1885
syscall(ffff80002a13e610) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff80002a13e610) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7190809396a0, count: -9
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
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If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want to overwrite report's subsystems, reply with:
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(See the list of subsystem names on the web dashboard)
If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
syzbot found the following issue on:
HEAD commit: 208893442c38 add device tree mapping for HP OmniBook X 14 ..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=12cc4a80580000
kernel config: https://syzkaller.appspot.com/x/.config?x=7058272de1526588
dashboard link: https://syzkaller.appspot.com/bug?extid=8c1a9ad3a38157ba876e
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/8d061f82701e/disk-20889344.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/7648d5cace80/bsd-20889344.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/882bcb3109dc/kernel-20889344.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+8c1a9a...@syzkaller.appspotmail.com
panic: ffs_blkfree: freeing free frag
Stopped at db_enter+0x25: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*161095 34647 0 0x2 0 1K syz-executor
379162 96142 0 0x2 0 0 syz-executor
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8309eb83) at panic+0x1e5 sys/kern/subr_prf.c:198
ffs_blkfree(fffffd8076bc0780,505e3,800) at ffs_blkfree+0xcc9 sys/ufs/ffs/ffs_alloc.c:1259
ffs_truncate(fffffd8076bc0780,0,4,fffffd807f7d3068) at ffs_truncate+0x139f sys/ufs/ffs/ffs_inode.c:325
ufs_rmdir(ffff80002a13e3b8) at ufs_rmdir+0x374 sys/ufs/ufs/ufs_vnops.c:1265
VOP_RMDIR(fffffd806bc4e980,fffffd8078e47030,ffff80002a13e498) at VOP_RMDIR+0x19a sys/kern/vfs_vops.c:413
dounlinkat(ffff80002a038020,ffffff9c,7190809396b0,8) at dounlinkat+0x2e0 sys/kern/vfs_syscalls.c:1885
syscall(ffff80002a13e610) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff80002a13e610) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7190809396a0, count: 6
https://www.openbsd.org/ddb.html describes the minimum info required in bug
reports. Insufficient info makes it difficult to find and fix bugs.
ddb{1}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu1: ffs_blkfree: freeing free frag
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8309eb83) at panic+0x1e5 sys/kern/subr_prf.c:198
ffs_blkfree(fffffd8076bc0780,505e3,800) at ffs_blkfree+0xcc9 sys/ufs/ffs/ffs_alloc.c:1259
ffs_truncate(fffffd8076bc0780,0,4,fffffd807f7d3068) at ffs_truncate+0x139f sys/ufs/ffs/ffs_inode.c:325
ufs_rmdir(ffff80002a13e3b8) at ufs_rmdir+0x374 sys/ufs/ufs/ufs_vnops.c:1265
VOP_RMDIR(fffffd806bc4e980,fffffd8078e47030,ffff80002a13e498) at VOP_RMDIR+0x19a sys/kern/vfs_vops.c:413
dounlinkat(ffff80002a038020,ffffff9c,7190809396b0,8) at dounlinkat+0x2e0 sys/kern/vfs_syscalls.c:1885
syscall(ffff80002a13e610) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff80002a13e610) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7190809396a0, count: -9
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff80002a13dfb0
rbx 0xffff800029b7cd87
rdx 0
rcx 0xffff80002a038020
rax 0xffff800029b7bff0
r8 0x101010101010101
r9 0x8080808080808080
r10 0x7faafe67fd58f10
r11 0x324223e87932e4
r12 0xffff800029b7cb88
r13 0
r14 0
r15 0x1
rip 0xffffffff826b1a55 db_enter+0x25
cs 0x8
rflags 0x246
rsp 0xffff80002a13dfa0
ss 0x10
db_enter+0x25: addq $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor) tid=161095 pid=34647 tcnt=1 stat=onproc
flags process=2<EXEC> proc=0
runpri=17, usrpri=79, slppri=17, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80002a038530,0xffff80002a0382b8
process=0xffff800034992460 user=0xffff80002a139000, vmspace=0xfffffd806bc1e370
estcpu=36, cpticks=0, pctcpu=0.1, user=1, sys=3, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
27214 94895 93938 0 3 0x80 nanoslp syz-executor
27214 186252 93938 0 3 0x4000080 kqpoll syz-executor
27214 451532 93938 0 3 0x4000080 fsleep syz-executor
27214 494565 93938 0 3 0x4000080 fsleep syz-executor
93756 262628 14872 0 3 0x82 netio sshd-session
*34647 161095 1375 0 7 0x2 syz-executor
93938 216477 1375 0 3 0x82 nanoslp syz-executor
30373 88262 1375 0 2 0x2 syz-executor
80395 7138 1375 0 3 0x82 wait syz-executor
55236 494657 1375 0 3 0x82 nanoslp syz-executor
96142 379162 1375 0 7 0x2 syz-executor
1375 323330 14155 0 3 0x82 wait syz-executor
14155 59695 37920 0 3 0x10008a sigsusp ksh
37920 244247 77915 0 3 0x98 kqread sshd-session
77915 208445 14872 0 3 0x92 kqread sshd-session
90965 394373 1 0 3 0x100083 ttyin getty
14872 476811 1 0 3 0x88 kqread sshd
25347 513120 52385 74 3 0x1100092 bpf pflogd
52385 220622 1 0 3 0x80 sbwait pflogd
25840 252738 71287 73 3 0x1100090 kqread syslogd
71287 365658 1 0 3 0x100082 sbwait syslogd
38832 83534 1 0 3 0x100080 kqread resolvd
74636 75330 95748 77 3 0x100092 kqread dhcpleased
39649 1459 95748 77 3 0x100092 kqread dhcpleased
95748 71415 1 0 3 0x80 kqread dhcpleased
36107 91533 0 0 3 0x14200 bored smr
54348 457151 0 0 3 0x14200 pgzero zerothread
51275 182954 0 0 3 0x14200 aiodoned aiodoned
63626 125469 0 0 3 0x14200 syncer update
78895 461130 0 0 3 0x14200 cleaner cleaner
92234 242328 0 0 3 0x14200 reaper reaper
19202 263281 0 0 3 0x14200 pgdaemon pagedaemon
77113 65413 0 0 3 0x14200 bored viomb
73405 356272 0 0 3 0x40014200 acpi0 acpi0
70761 251972 0 0 3 0x40014200 idle1
71116 360670 0 0 3 0x14200 bored softnet3
43631 159268 0 0 3 0x14200 bored softnet2
201 380960 0 0 3 0x14200 bored softnet1
4447 400968 0 0 3 0x14200 bored softnet0
51434 386111 0 0 3 0x14200 bored systqmp
36358 231132 0 0 3 0x14200 bored systq
63405 129079 0 0 3 0x14200 tmoslp softclockmp
11498 343541 0 0 3 0x40014200 tmoslp softclock
35044 77170 0 0 3 0x40014200 idle0
1 288969 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 34647 (syz-executor) thread 0xffff80002a038020 (161095)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff835a3c08)
#0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1 __mp_acquire_count+0x58
#2 mi_switch+0x658 sys/kern/sched_bsd.c:460
#3 sleep_finish+0x219 sys/kern/kern_synch.c:416
#4 biowait+0xc1 sys/kern/vfs_bio.c:1254
#5 ffs_blkfree+0x16e ffs_cgread sys/ufs/ffs/ffs_alloc.c:850 [inline]
#5 ffs_blkfree+0x16e sys/ufs/ffs/ffs_alloc.c:1272
#6 ffs_truncate+0x139f sys/ufs/ffs/ffs_inode.c:325
#7 ufs_rmdir+0x374 sys/ufs/ufs/ufs_vnops.c:1265
#8 VOP_RMDIR+0x19a sys/kern/vfs_vops.c:413
#9 dounlinkat+0x2e0 sys/kern/vfs_syscalls.c:1885
#10 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#10 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd8076bc0818)
#0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1 rw_enter+0x41b sys/kern/kern_rwlock.c:309
#2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464
#3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564
#5 vget+0x2bd sys/kern/vfs_subr.c:676
#6 ufs_ihashget+0x192 sys/ufs/ufs/ufs_ihash.c:98
#7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201
#8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478
#9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
#10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566
#11 namei+0x7aa sys/kern/vfs_lookup.c:250
#12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852
#13 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#13 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd8076bc05f8)
#0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1 rw_enter+0x41b sys/kern/kern_rwlock.c:309
#2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464
#3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564
#5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418
#6 namei+0x7aa sys/kern/vfs_lookup.c:250
#7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852
#8 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#8 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#9 Xsyscall+0x128
Process 30373 (syz-executor) thread 0xffff80002a038a40 (88262)
exclusive rrwlock inode r = 0 (0xfffffd8076bc0e78)
#0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1 rw_enter+0x41b sys/kern/kern_rwlock.c:309
#2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464
#3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564
#5 vget+0x2bd sys/kern/vfs_subr.c:676
#6 ufs_ihashget+0x192 sys/ufs/ufs/ufs_ihash.c:98
#7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201
#8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478
#9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
#10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566
#11 namei+0x7aa sys/kern/vfs_lookup.c:250
#12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852
#13 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#13 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806058ee70)
#0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1 rw_enter+0x41b sys/kern/kern_rwlock.c:309
#2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464
#3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564
#5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418
#6 namei+0x7aa sys/kern/vfs_lookup.c:250
#7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852
#8 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#8 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#9 Xsyscall+0x128
Process 96142 (syz-executor) thread 0xffff8000ffffdbe8 (379162)
exclusive rrwlock inode r = 0 (0xfffffd8076bc0c58)
#0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1 rw_enter+0x41b sys/kern/kern_rwlock.c:309
#2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464
#3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564
#5 vget+0x2bd sys/kern/vfs_subr.c:676
#6 ufs_ihashget+0x192 sys/ufs/ufs/ufs_ihash.c:98
#7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201
#8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478
#9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
#10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566
#11 namei+0x7aa sys/kern/vfs_lookup.c:250
#12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852
#13 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#13 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd8076bc02c8)
#0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1 rw_enter+0x41b sys/kern/kern_rwlock.c:309
#2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464
#3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564
#5 vget+0x2bd sys/kern/vfs_subr.c:676
#6 cache_lookup+0x36e sys/kern/vfs_cache.c:222
#7 ufs_lookup+0x218 sys/ufs/ufs/ufs_lookup.c:160
#8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
#9 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566
#10 namei+0x7aa sys/kern/vfs_lookup.c:250
#11 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852
#12 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#12 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#13 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10192 14186K 14584K 166960K 11414 0
pcb 17 12K 12K 166960K 33 0
rtable 234 6K 6K 166960K 572 0
pf 35 17K 18K 166960K 67 0
ifaddr 43 7K 7K 166960K 78 0
ifgroup 55 2K 2K 166960K 89 0
counters 64 36K 36K 166960K 82 0
ioctlops 0 0K 4K 166960K 1504 0
iov 0 0K 16K 166960K 5 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1370 86K 86K 166960K 1555 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 5K 166960K 4 0
VM map 2 1K 1K 166960K 2 0
sem 6 0K 0K 166960K 6 0
dirhash 12 2K 2K 166960K 15 0
ACPI 1690 195K 286K 166960K 12418 0
file desc 13 45K 97K 166960K 345 0
sigio 0 0K 0K 166960K 3 0
proc 72 91K 128K 166960K 737 0
subproc 104 6K 6K 166960K 195 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 9 0
in_multi 99 7K 7K 166960K 180 0
ether_multi 1 0K 0K 166960K 1 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 61 281K 281K 166960K 61 0
exec 0 0K 1K 166960K 464 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 214 76K 78K 166960K 4134 0
UVM aobj 8 2K 2K 166960K 9 0
pinsyscall 40 80K 104K 166960K 1601 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 6 0
NDP 12 0K 2K 166960K 52 0
temp 37 6811K 6877K 166960K 5512 0
kqueue 14 22K 24K 166960K 41 0
SYN cache 2 16K 16K 166960K 2 0
ddb{1}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache 128 24 0 0 1 0 1 1 0 8 0
rtpcb 120 55 0 51 1 0 1 1 0 8 0
rtentry 112 192 0 82 4 0 4 4 0 8 0
unpcb 144 98 0 73 1 0 1 1 0 8 0
syncache 336 4 0 4 2 1 1 1 0 8 1
tcpcb 808 46 0 38 2 0 2 2 0 8 1
arp 120 33 0 15 1 0 1 1 0 8 0
inpcb 336 216 0 204 5 3 2 4 0 8 0
nd6 136 45 0 21 1 0 1 1 0 8 0
kcovpl 48 15 0 7 1 0 1 1 0 8 0
ppxss 1168 1 0 1 1 1 0 1 0 8 0
pfstscr 40 2 0 2 1 0 1 1 0 8 1
pffrag 232 1 0 1 1 0 1 1 0 482 1
pffrnode 88 1 0 1 1 0 1 1 0 8 1
pffrent 40 2 0 2 1 0 1 1 0 8 1
pfosfp 40 1428 0 1005 5 0 5 5 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfstitem 24 28 0 4 1 0 1 1 0 8 0
pfstkey 128 30 0 6 1 0 1 1 0 8 0
pfstate 376 29 0 5 3 0 3 3 0 8 0
pfrule 1344 22 0 16 2 0 2 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 796 0 339 31 0 31 31 0 8 1
art_table 32 797 0 339 4 0 4 4 0 8 0
art_node 16 191 0 91 1 0 1 1 0 8 0
sysvmsgpl 40 4 0 3 1 0 1 1 0 8 0
semapl 112 4 0 0 1 0 1 1 0 8 0
shmpl 112 6 0 1 1 0 1 1 0 8 0
dirhash 1024 19 0 2 3 0 3 3 0 8 0
dino2pl 256 1741 0 223 96 0 96 96 0 8 0
ffsino 272 1741 0 223 102 0 102 102 0 8 0
nchpl 144 2074 0 382 63 0 63 63 0 8 0
uvmvnodes 80 2000 0 0 41 0 41 41 0 8 0
vnodes 216 2000 0 0 112 0 112 112 0 8 0
namei 1024 7141 0 7141 2 1 1 2 0 8 1
percpumem 16 55 0 9 1 0 1 1 0 8 0
kstatmem 264 42 0 18 2 0 2 2 0 8 0
scxspl 216 8585 0 8585 4 3 1 2 1 8 1
plimitpl 152 50 0 33 1 0 1 1 0 8 0
sigapl 424 630 0 584 8 1 7 7 0 8 1
futexpl 64 1788 0 1786 2 1 1 1 0 8 0
knotepl 120 321 0 0 10 0 10 10 0 8 0
kqueuepl 216 46 0 36 1 0 1 1 0 8 0
pipepl 320 147 0 119 3 0 3 3 0 8 0
fdescpl 496 612 0 584 6 1 5 6 0 8 0
filepl 152 2296 0 2035 12 1 11 11 0 8 0
lockfpl 104 28 0 26 1 0 1 1 0 8 0
lockfspl 48 15 0 13 1 0 1 1 0 8 0
sessionpl 144 30 0 20 1 0 1 1 0 8 0
pgrppl 48 46 0 28 1 0 1 1 0 8 0
ucredpl 104 198 0 184 1 0 1 1 0 8 0
zombiepl 144 588 0 584 1 0 1 1 0 8 0
processpl 1160 630 0 584 5 1 4 5 0 8 0
procpl 648 808 0 759 8 2 6 6 0 8 0
srpgc 96 1 0 1 1 1 0 1 0 8 0
sockpl 664 370 0 329 7 3 4 6 0 8 0
mcl64k 65536 2 0 0 1 0 1 1 0 8 0
mcl8k 8192 4 0 0 1 0 1 1 0 8 0
mcl4k 4096 3 0 0 1 0 1 1 0 8 0
mcl2k2 2112 1 0 0 1 0 1 1 0 8 0
mcl2k 2048 155 0 0 20 0 20 20 0 8 0
mtagpl 96 8 0 0 1 0 1 1 0 8 0
mbufpl 256 221 0 0 15 1 14 14 0 8 0
bufpl 280 4891 0 97 343 0 343 343 0 8 0
anonpl 24 61288 0 57890 51 1 50 50 0 185 27
amapchunkpl 152 11365 0 10959 30 1 29 29 0 158 8
amappl16 200 169 0 154 2 0 2 2 0 8 0
amappl15 192 1 0 1 1 1 0 1 0 8 0
amappl14 184 121 0 108 1 0 1 1 0 8 0
amappl12 168 1397 0 1368 4 1 3 3 0 8 1
amappl11 160 46 0 32 1 0 1 1 0 8 0
amappl10 152 4 0 2 1 0 1 1 0 8 0
amappl9 144 17 0 17 1 1 0 1 0 8 0
amappl8 136 14 0 12 1 0 1 1 0 8 0
amappl7 128 112 0 99 1 0 1 1 0 8 0
amappl6 120 225 0 224 1 0 1 1 0 8 0
amappl5 112 153 0 141 1 0 1 1 0 8 0
amappl4 104 325 0 305 1 0 1 1 0 8 0
amappl3 96 3065 0 2974 4 0 4 4 0 8 1
amappl2 88 774 0 699 2 0 2 2 0 8 0
amappl1 80 8794 0 8157 14 0 14 14 0 8 0
amappl 88 3704 0 3558 5 0 5 5 0 92 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma1024 1024 1 0 0 1 0 1 1 0 8 0
dma512 512 1 0 1 1 0 1 1 0 8 1
dma256 256 6 0 6 1 1 0 1 0 8 0
dma128 128 253 0 253 1 1 0 1 0 8 0
dma64 64 6 0 6 1 1 0 1 0 8 0
dma32 32 7 0 7 1 1 0 1 0 8 0
dma16 16 18 0 17 1 0 1 1 0 8 0
aobjpl 72 8 0 1 1 0 1 1 0 8 0
uaddrrnd 24 612 0 584 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 612 0 584 1 0 1 1 0 8 0
vmmpekpl 168 6564 0 6505 3 0 3 3 0 8 0
vmmpepl 168 42435 0 40657 92 2 90 90 0 357 2
vmsppl 440 611 0 584 6 1 5 5 0 8 1
rwobjpl 56 15527 0 12531 43 0 43 43 0 8 0
pdppl 4096 1231 0 1168 111 38 73 87 0 8 10
pvpl 32 26686 0 0 216 0 216 216 0 265 0
pmappl 248 611 0 584 3 0 3 3 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 398 0 47 11 0 11 11 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffffffff83472ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:589 [inline]
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:158
__mp_lock(ffffffff835a3a00) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline]
__mp_lock(ffffffff835a3a00) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144
__mp_acquire_count(ffffffff835a3a00,1) at __mp_acquire_count+0x58
mi_switch() at mi_switch+0x658 sys/kern/sched_bsd.c:460
sleep_finish(0,1) at sleep_finish+0x219 sys/kern/kern_synch.c:416
getblk(fffffd807e82a510,12fcc0,4000,0,ffffffffffffffff) at getblk+0x197 sys/kern/vfs_bio.c:1025
bread(fffffd807e82a510,12fcc0,4000,ffff80002a0bc678) at bread+0x47 bio_doread sys/kern/vfs_bio.c:430 [inline]
bread(fffffd807e82a510,12fcc0,4000,ffff80002a0bc678) at bread+0x47 sys/kern/vfs_bio.c:475
ffs_freefile(fffffd8076bc0bc0,135a6,2000) at ffs_freefile+0xbe ffs_cgread sys/ufs/ffs/ffs_alloc.c:850 [inline]
ffs_freefile(fffffd8076bc0bc0,135a6,2000) at ffs_freefile+0xbe sys/ufs/ffs/ffs_alloc.c:1377
ffs_inode_free(fffffd8076bc0bc0,135a6,2000) at ffs_inode_free+0x44 sys/ufs/ffs/ffs_alloc.c:1355
ufs_inactive(ffff80002a0bc7d8) at ufs_inactive+0x29d sys/ufs/ufs/ufs_inode.c:94
VOP_INACTIVE(fffffd806ba15e90,ffff8000ffffdbe8) at VOP_INACTIVE+0x107 sys/kern/vfs_vops.c:495
end trace frame: 0xffff80002a0bc860, count: 0
ddb{0}> trace
x86_ipi_db(ffffffff83472ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:589 [inline]
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:158
__mp_lock(ffffffff835a3a00) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline]
__mp_lock(ffffffff835a3a00) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144
__mp_acquire_count(ffffffff835a3a00,1) at __mp_acquire_count+0x58
mi_switch() at mi_switch+0x658 sys/kern/sched_bsd.c:460
sleep_finish(0,1) at sleep_finish+0x219 sys/kern/kern_synch.c:416
getblk(fffffd807e82a510,12fcc0,4000,0,ffffffffffffffff) at getblk+0x197 sys/kern/vfs_bio.c:1025
bread(fffffd807e82a510,12fcc0,4000,ffff80002a0bc678) at bread+0x47 bio_doread sys/kern/vfs_bio.c:430 [inline]
bread(fffffd807e82a510,12fcc0,4000,ffff80002a0bc678) at bread+0x47 sys/kern/vfs_bio.c:475
ffs_freefile(fffffd8076bc0bc0,135a6,2000) at ffs_freefile+0xbe ffs_cgread sys/ufs/ffs/ffs_alloc.c:850 [inline]
ffs_freefile(fffffd8076bc0bc0,135a6,2000) at ffs_freefile+0xbe sys/ufs/ffs/ffs_alloc.c:1377
ffs_inode_free(fffffd8076bc0bc0,135a6,2000) at ffs_inode_free+0x44 sys/ufs/ffs/ffs_alloc.c:1355
ufs_inactive(ffff80002a0bc7d8) at ufs_inactive+0x29d sys/ufs/ufs/ufs_inode.c:94
VOP_INACTIVE(fffffd806ba15e90,ffff8000ffffdbe8) at VOP_INACTIVE+0x107 sys/kern/vfs_vops.c:495
vput(fffffd806ba15e90) at vput+0xe5 sys/kern/vfs_subr.c:779
VOP_REMOVE(fffffd8078e47a50,fffffd806ba15e90,ffff80002a0bc958) at VOP_REMOVE+0x19d sys/kern/vfs_vops.c:336
dounlinkat(ffff8000ffffdbe8,ffffff9c,7b8b901f3a30,0) at dounlinkat+0x177 sys/kern/vfs_syscalls.c:1888
syscall(ffff80002a0bcad0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff80002a0bcad0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7b8b901f3ee0, count: -19
ddb{0}> machine ddbcpu 1
Stopped at db_enter+0x25: addq $0x8,%rsp
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8309eb83) at panic+0x1e5 sys/kern/subr_prf.c:198
ffs_blkfree(fffffd8076bc0780,505e3,800) at ffs_blkfree+0xcc9 sys/ufs/ffs/ffs_alloc.c:1259
ffs_truncate(fffffd8076bc0780,0,4,fffffd807f7d3068) at ffs_truncate+0x139f sys/ufs/ffs/ffs_inode.c:325
ufs_rmdir(ffff80002a13e3b8) at ufs_rmdir+0x374 sys/ufs/ufs/ufs_vnops.c:1265
VOP_RMDIR(fffffd806bc4e980,fffffd8078e47030,ffff80002a13e498) at VOP_RMDIR+0x19a sys/kern/vfs_vops.c:413
dounlinkat(ffff80002a038020,ffffff9c,7190809396b0,8) at dounlinkat+0x2e0 sys/kern/vfs_syscalls.c:1885
syscall(ffff80002a13e610) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff80002a13e610) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7190809396a0, count: 6
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8309eb83) at panic+0x1e5 sys/kern/subr_prf.c:198
ffs_blkfree(fffffd8076bc0780,505e3,800) at ffs_blkfree+0xcc9 sys/ufs/ffs/ffs_alloc.c:1259
ffs_truncate(fffffd8076bc0780,0,4,fffffd807f7d3068) at ffs_truncate+0x139f sys/ufs/ffs/ffs_inode.c:325
ufs_rmdir(ffff80002a13e3b8) at ufs_rmdir+0x374 sys/ufs/ufs/ufs_vnops.c:1265
VOP_RMDIR(fffffd806bc4e980,fffffd8078e47030,ffff80002a13e498) at VOP_RMDIR+0x19a sys/kern/vfs_vops.c:413
dounlinkat(ffff80002a038020,ffffff9c,7190809396b0,8) at dounlinkat+0x2e0 sys/kern/vfs_syscalls.c:1885
syscall(ffff80002a13e610) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff80002a13e610) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7190809396a0, count: -9
---
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