panic: pool_cache_item_magic_check: mbufpl cppua nfirec:e lkeisrnet lm odidiagfnioedst:i ict easms aerdtdiro n0x f"!f_f
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syzbot
Jul 18, 2020, 11:24:17 PM7/18/20
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: d711776b force NCPU=1 for now. (identifying multiple cpus..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=168ed017100000
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=1e668871807b6cbc9b14
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+1e6688...@syzkaller.appspotmail.com
panic: pool_cache_item_magic_check: mbufpl cppua nfirec:e lkeisrnet lm odidiagfnioedst:i ict easms aerdtdiro n0x f"!f_ffkefdrn8e0l6d_l77o8ckb_0h0+el16d 0x0!=0x7a721b03e381612e
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
77356 52526 0 0 0x4000000 0 syz-executor.1
*173106 70856 0 0 0x4000000 1 syz-executor.0
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff824057a5) at panic+0x15c sys/kern/subr_prf.c:207
pool_cache_get(ffffffff829228d8) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline]
pool_cache_get(ffffffff829228d8) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884
pool_get(ffffffff829228d8,1) at pool_get+0x91 sys/kern/subr_pool.c:572
m_get(1,1) at m_get+0x4c sys/kern/uipc_mbuf.c:250
m_getuio(ffff8000230f3548,1,1000,ffff8000230f3610) at m_getuio+0xbe sys/kern/uipc_socket.c:592
sosend(fffffd8066789b08,0,ffff8000230f3610,0,0,2) at sosend+0x54e sys/kern/uipc_socket.c:542
sendit(ffff800020e374f8,8,ffff8000230f36f0,2,ffff8000230f37d0) at sendit+0x52b sys/kern/uipc_syscalls.c:657
sys_sendto(ffff800020e374f8,ffff8000230f3788,ffff8000230f37d0) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:522
syscall(ffff8000230f3850) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000230f3850) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x35aa18d92f0, count: 4
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
pool_cache_item_magic_check: mbufpl cpu free list modified: item addr 0xfffffd806d778b00+16 0x0!=0x7a721b03e381612e
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff824057a5) at panic+0x15c sys/kern/subr_prf.c:207
pool_cache_get(ffffffff829228d8) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline]
pool_cache_get(ffffffff829228d8) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884
pool_get(ffffffff829228d8,1) at pool_get+0x91 sys/kern/subr_pool.c:572
m_get(1,1) at m_get+0x4c sys/kern/uipc_mbuf.c:250
m_getuio(ffff8000230f3548,1,1000,ffff8000230f3610) at m_getuio+0xbe sys/kern/uipc_socket.c:592
sosend(fffffd8066789b08,0,ffff8000230f3610,0,0,2) at sosend+0x54e sys/kern/uipc_socket.c:542
sendit(ffff800020e374f8,8,ffff8000230f36f0,2,ffff8000230f37d0) at sendit+0x52b sys/kern/uipc_syscalls.c:657
sys_sendto(ffff800020e374f8,ffff8000230f3788,ffff8000230f37d0) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:522
syscall(ffff8000230f3850) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000230f3850) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x35aa18d92f0, count: -11
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff8000230f3270
rbx 0xffff8000230f3320
rdx 0x8b
rcx 0x2
rax 0x1
r8 0xffffffff813f032f kprintf+0x16f
r9 0x1
r10 0x2
r11 0xeeefdf095bf047a7
r12 0x3000000008
r13 0xffff8000230f3280
r14 0x100
r15 0x1
rip 0xffffffff812c6398 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff8000230f3260
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor.0) pid=173106 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=32, usrpri=86, nice=20
forw=0xffffffffffffffff, list=0xffff800020e37288,0xffff800020e383a8
process=0xffff800020eb5398 user=0xffff8000230ee000, vmspace=0xfffffd807efff5c0
estcpu=36, cpticks=3, pctcpu=0.0
user=0, sys=3, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
52526 231469 92551 0 2 0 syz-executor.1
52526 77356 92551 0 7 0x4000000 syz-executor.1
70856 316486 34275 0 2 0 syz-executor.0
*70856 173106 34275 0 7 0x4000000 syz-executor.0
82920 441096 0 0 3 0x14200 bored sosplice
28500 276687 0 0 3 0x14280 nfsidl nfsio
27892 87059 0 0 3 0x14280 nfsidl nfsio
57647 418050 0 0 3 0x14280 nfsidl nfsio
29258 157838 0 0 3 0x14280 nfsidl nfsio
30524 213940 0 0 3 0x14280 nfsidl nfsio
69224 305102 0 0 3 0x14280 nfsidl nfsio
43724 130582 0 0 3 0x14280 nfsidl nfsio
3845 254482 0 0 3 0x14280 nfsidl nfsio
20047 379640 0 0 3 0x14280 nfsidl nfsio
21779 231296 0 0 3 0x14280 nfsidl nfsio
25336 234527 0 0 3 0x14280 nfsidl nfsio
37602 13457 0 0 3 0x14280 nfsidl nfsio
78018 435095 0 0 3 0x14280 nfsidl nfsio
10042 189849 0 0 3 0x14280 nfsidl nfsio
31077 46914 0 0 3 0x14280 nfsidl nfsio
64030 273466 0 0 3 0x14280 nfsidl nfsio
35936 54089 0 0 3 0x14280 nfsidl nfsio
3763 345391 0 0 3 0x14280 nfsidl nfsio
18252 89133 0 0 3 0x14280 nfsidl nfsio
25872 72299 0 0 3 0x14280 nfsidl nfsio
92551 304138 22461 0 2 0x482 syz-executor.1
34275 322203 22461 0 2 0x482 syz-executor.0
22461 79068 77756 0 2 0x482 syz-fuzzer
22461 254618 77756 0 3 0x4000082 nanosleep syz-fuzzer
22461 9562 77756 0 3 0x4000082 thrsleep syz-fuzzer
22461 83078 77756 0 3 0x4000082 thrsleep syz-fuzzer
22461 370904 77756 0 3 0x4000082 thrsleep syz-fuzzer
22461 369337 77756 0 3 0x4000082 thrsleep syz-fuzzer
22461 338075 77756 0 3 0x4000082 thrsleep syz-fuzzer
22461 493577 77756 0 3 0x4000082 thrsleep syz-fuzzer
22461 134091 77756 0 3 0x4000082 kqread syz-fuzzer
22461 310383 77756 0 3 0x4000082 thrsleep syz-fuzzer
77756 314508 62037 0 3 0x10008a pause ksh
62037 19417 96281 0 3 0x92 select sshd
96454 125652 1 0 3 0x100083 ttyin getty
96281 436814 1 0 3 0x80 select sshd
94405 32255 97463 74 3 0x100092 bpf pflogd
97463 203969 1 0 3 0x80 netio pflogd
6641 288247 80301 73 3 0x100090 kqread syslogd
80301 93743 1 0 3 0x100082 netio syslogd
20517 27519 1 77 3 0x100090 poll dhclient
50006 252942 1 0 3 0x80 poll dhclient
61610 290182 0 0 3 0x14200 bored smr
47258 210333 0 0 2 0x14200 zerothread
40647 329054 0 0 3 0x14200 aiodoned aiodoned
30483 42936 0 0 3 0x14200 syncer update
69780 311211 0 0 3 0x14200 cleaner cleaner
68881 50249 0 0 3 0x14200 reaper reaper
81732 73993 0 0 3 0x14200 pgdaemon pagedaemon
27177 251457 0 0 3 0x14200 bored crynlk
14947 151976 0 0 3 0x14200 bored crypto
80609 113116 0 0 3 0x40014200 acpi0 acpi0
95925 506052 0 0 3 0x40014200 idle1
61666 475051 0 0 3 0x14200 bored softnet
70534 323478 0 0 3 0x14200 bored systqmp
81268 237258 0 0 3 0x14200 bored systq
44582 523786 0 0 3 0x40014200 bored softclock
42181 494268 0 0 3 0x40014200 idle0
1 439489 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9500 6534K 6534K 78643K 10665 0
pcb 15 8K 8K 78643K 25 0
rtable 109 3K 6K 78643K 243 0
ifaddr 55 12K 12K 78643K 69 0
counters 43 33K 33K 78643K 43 0
ioctlops 0 0K 4K 78643K 1478 0
iov 0 0K 24K 78643K 13 0
mount 1 1K 1K 78643K 1 0
vnodes 1219 77K 77K 78643K 1239 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 4 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 0K 78643K 39 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1824 197K 290K 78643K 13058 0
file desc 6 17K 25K 78643K 123 0
proc 61 63K 95K 78643K 449 0
subproc 32 2K 2K 78643K 34 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
in_multi 40 2K 2K 78643K 48 0
ether_multi 2 0K 0K 78643K 2 0
mrt 3 0K 0K 78643K 3 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 43 201K 201K 78643K 43 0
exec 0 0K 1K 78643K 213 0
pagedep 1 8K 8K 78643K 1 0
inodedep 1 32K 32K 78643K 1 0
newblk 1 0K 0K 78643K 1 0
VM swap 7 26K 26K 78643K 7 0
UVM amap 130 23K 23K 78643K 1306 0
UVM aobj 9 4K 4K 78643K 9 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 2 0
NDP 8 0K 0K 78643K 14 0
temp 79 3853K 3917K 78643K 2247 0
kqueue 3 4K 4K 78643K 3 0
SYN cache 2 16K 16K 78643K 2 0
ddb{1}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 6 0 0 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtpcb 80 23 0 21 1 0 1 1 0 8 0
rtentry 112 48 0 3 2 0 2 2 0 8 0
unpcb 120 216 0 202 2 0 2 2 0 8 1
syncache 264 4 0 4 1 1 0 1 0 8 0
tcpqe 32 677 0 677 1 1 0 1 0 8 0
tcpcb 544 22 0 18 1 0 1 1 0 8 0
inpcb 296 165 0 156 2 0 2 2 0 8 1
rttmr 72 1 0 0 1 0 1 1 0 8 0
nd6 48 8 0 2 1 0 1 1 0 8 0
pffrag 232 1 0 0 1 0 1 1 0 482 0
pffrnode 88 1 0 0 1 0 1 1 0 8 0
pffrent 40 2 0 1 1 0 1 1 0 8 0
pfosfp 40 846 0 423 5 0 5 5 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfrktable 1344 14 0 14 1 0 1 1 0 8 1
pfstitem 24 17 0 3 1 0 1 1 0 8 0
pfstkey 112 17 0 3 1 0 1 1 0 8 0
pfstate 328 17 0 3 2 0 2 2 0 8 0
pfrule 1360 23 0 18 2 1 1 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 188 0 0 12 0 12 12 0 8 0
art_table 32 189 0 0 2 0 2 2 0 8 0
art_node 16 47 0 6 1 0 1 1 0 8 0
sysvmsgpl 40 6 0 3 1 0 1 1 0 8 0
semupl 112 5 0 5 1 1 0 1 0 8 0
semapl 112 31 0 21 1 0 1 1 0 8 0
shmpl 112 6 0 0 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1551 0 142 89 0 89 89 0 8 0
ffsino 272 1551 0 142 96 1 95 95 0 8 0
nchpl 144 1913 0 302 60 0 60 60 0 8 0
uvmvnodes 72 1607 0 0 30 0 30 30 0 8 0
vnodes 208 1607 0 0 85 0 85 85 0 8 0
namei 1024 5070 0 5070 2 1 1 1 0 8 1
percpumem 16 32 0 0 1 0 1 1 0 8 0
pfiaddrpl 120 4 0 4 1 0 1 1 0 8 1
scxspl 192 5658 0 5658 8 7 1 7 0 8 1
plimitpl 152 15 0 7 1 0 1 1 0 8 0
sigapl 424 359 0 306 6 0 6 6 0 8 0
futexpl 56 1209 0 1209 1 0 1 1 0 8 1
knotepl 112 61 0 42 1 0 1 1 0 8 0
kqueuepl 144 6 0 4 1 0 1 1 0 8 0
pipepl 304 92 0 82 2 1 1 2 0 8 0
fdescpl 496 323 0 306 3 0 3 3 0 8 0
filepl 152 1728 0 1622 6 1 5 5 0 8 0
lockfpl 104 10 0 9 1 0 1 1 0 8 0
lockfspl 48 5 0 4 1 0 1 1 0 8 0
sessionpl 112 18 0 7 1 0 1 1 0 8 0
pgrppl 48 18 0 7 1 0 1 1 0 8 0
ucredpl 96 109 0 100 1 0 1 1 0 8 0
zombiepl 144 306 0 306 2 1 1 1 0 8 1
processpl 992 359 0 306 8 1 7 7 0 8 0
procpl 624 558 0 494 6 0 6 6 0 8 1
sosppl 128 1 0 1 1 0 1 1 0 8 1
sockpl 400 404 0 379 6 1 5 5 0 8 2
mcl64k 65536 2 0 0 1 0 1 1 0 8 0
mcl12k 12288 5 0 0 1 0 1 1 0 8 0
mcl9k 9216 1 0 0 1 0 1 1 0 8 0
mcl8k 8192 3 0 0 1 0 1 1 0 8 0
mcl4k 4096 3 0 0 1 0 1 1 0 8 0
mcl2k 2048 261 0 0 32 0 32 32 0 8 0
mtagpl 96 5 0 0 1 0 1 1 0 8 0
mbufpl 256 269 0 0 16 0 16 16 0 8 0
bufpl 280 3525 0 132 243 0 243 243 0 8 0
anonpl 16 45916 0 29249 69 1 68 68 0 124 0
amapchunkpl 152 1566 0 1400 9 2 7 9 0 158 0
amappl16 192 1366 0 485 45 0 45 45 0 8 0
amappl15 184 1 0 0 1 0 1 1 0 8 0
amappl14 176 33 0 27 1 0 1 1 0 8 0
amappl13 168 79 0 73 1 0 1 1 0 8 0
amappl12 160 10 0 7 1 0 1 1 0 8 0
amappl11 152 57 0 42 1 0 1 1 0 8 0
amappl10 144 30 0 22 1 0 1 1 0 8 0
amappl9 136 430 0 426 1 0 1 1 0 8 0
amappl8 128 395 0 358 2 0 2 2 0 8 0
amappl7 120 119 0 107 1 0 1 1 0 8 0
amappl6 112 22 0 19 2 1 1 1 0 8 0
amappl5 104 218 0 202 1 0 1 1 0 8 0
amappl4 96 535 0 505 1 0 1 1 0 8 0
amappl3 88 113 0 104 1 0 1 1 0 8 0
amappl2 80 1615 0 1539 2 0 2 2 0 8 0
amappl1 72 18218 0 17761 23 13 10 18 0 8 0
amappl 80 787 0 740 2 0 2 2 0 84 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
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 64 8 0 0 1 0 1 1 0 8 0
uaddrrnd 24 323 0 306 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 323 0 306 1 0 1 1 0 8 0
vmmpekpl 168 6561 0 6522 2 0 2 2 0 8 0
vmmpepl 168 47497 0 45331 125 15 110 116 0 357 15
vmsppl 368 322 0 306 2 0 2 2 0 8 0
pdppl 4096 653 0 612 7 1 6 6 0 8 0
pvpl 32 160390 0 140383 167 0 167 167 0 265 4
pmappl 232 322 0 306 2 1 1 2 0 8 0
extentpl 40 53 0 36 1 0 1 1 0 8 0
phpool 112 280 0 7 8 0 8 8 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffffffff8274cff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352
x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__sanitizer_cov_trace_cmp4(8c95e,8c95d) at __sanitizer_cov_trace_cmp4+0x64 sys/dev/kcov.c:137
__mp_lock(ffffffff82922230) at __mp_lock+0x139 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82922230) at __mp_lock+0x139 sys/kern/kern_lock.c:147
softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:89
Xsoftclock() at Xsoftclock+0x1f
cnputc(64) at cnputc+0x4c sys/dev/cons.c:239
kputchar(64,5,0) at kputchar+0x219 sys/kern/subr_prf.c:343
kprintf() at kprintf+0x1b7c sys/kern/subr_prf.c:1052
panic(ffffffff824006f2) at panic+0xf3 vprintf sys/kern/subr_prf.c:528 [inline]
panic(ffffffff824006f2) at panic+0xf3 sys/kern/subr_prf.c:197
__assert(ffffffff8246e473,ffffffff8245447f,29e,ffffffff8243167f) at __assert+0x2b sys/kern/subr_prf.c:154
proc_trampoline_mp() at proc_trampoline_mp+0x123
end trace frame: 0x0, count: 2
ddb{0}> trace
x86_ipi_db(ffffffff8274cff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352
x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__sanitizer_cov_trace_cmp4(8c95e,8c95d) at __sanitizer_cov_trace_cmp4+0x64 sys/dev/kcov.c:137
__mp_lock(ffffffff82922230) at __mp_lock+0x139 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82922230) at __mp_lock+0x139 sys/kern/kern_lock.c:147
softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:89
Xsoftclock() at Xsoftclock+0x1f
cnputc(64) at cnputc+0x4c sys/dev/cons.c:239
kputchar(64,5,0) at kputchar+0x219 sys/kern/subr_prf.c:343
kprintf() at kprintf+0x1b7c sys/kern/subr_prf.c:1052
panic(ffffffff824006f2) at panic+0xf3 vprintf sys/kern/subr_prf.c:528 [inline]
panic(ffffffff824006f2) at panic+0xf3 sys/kern/subr_prf.c:197
__assert(ffffffff8246e473,ffffffff8245447f,29e,ffffffff8243167f) at __assert+0x2b sys/kern/subr_prf.c:154
proc_trampoline_mp() at proc_trampoline_mp+0x123
end trace frame: 0x0, count: -13
ddb{0}> machine ddbcpu 1
Stopped at db_enter+0x18: addq $0x8,%rsp
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff824057a5) at panic+0x15c sys/kern/subr_prf.c:207
pool_cache_get(ffffffff829228d8) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline]
pool_cache_get(ffffffff829228d8) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884
pool_get(ffffffff829228d8,1) at pool_get+0x91 sys/kern/subr_pool.c:572
m_get(1,1) at m_get+0x4c sys/kern/uipc_mbuf.c:250
m_getuio(ffff8000230f3548,1,1000,ffff8000230f3610) at m_getuio+0xbe sys/kern/uipc_socket.c:592
sosend(fffffd8066789b08,0,ffff8000230f3610,0,0,2) at sosend+0x54e sys/kern/uipc_socket.c:542
sendit(ffff800020e374f8,8,ffff8000230f36f0,2,ffff8000230f37d0) at sendit+0x52b sys/kern/uipc_syscalls.c:657
sys_sendto(ffff800020e374f8,ffff8000230f3788,ffff8000230f37d0) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:522
syscall(ffff8000230f3850) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000230f3850) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x35aa18d92f0, count: 4
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff824057a5) at panic+0x15c sys/kern/subr_prf.c:207
pool_cache_get(ffffffff829228d8) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline]
pool_cache_get(ffffffff829228d8) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884
pool_get(ffffffff829228d8,1) at pool_get+0x91 sys/kern/subr_pool.c:572
m_get(1,1) at m_get+0x4c sys/kern/uipc_mbuf.c:250
m_getuio(ffff8000230f3548,1,1000,ffff8000230f3610) at m_getuio+0xbe sys/kern/uipc_socket.c:592
sosend(fffffd8066789b08,0,ffff8000230f3610,0,0,2) at sosend+0x54e sys/kern/uipc_socket.c:542
sendit(ffff800020e374f8,8,ffff8000230f36f0,2,ffff8000230f37d0) at sendit+0x52b sys/kern/uipc_syscalls.c:657
sys_sendto(ffff800020e374f8,ffff8000230f3788,ffff8000230f37d0) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:522
syscall(ffff8000230f3850) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000230f3850) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x35aa18d92f0, count: -11
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
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https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following issue on:
HEAD commit: d711776b force NCPU=1 for now. (identifying multiple cpus..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=168ed017100000
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=1e668871807b6cbc9b14
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+1e6688...@syzkaller.appspotmail.com
panic: pool_cache_item_magic_check: mbufpl cppua nfirec:e lkeisrnet lm odidiagfnioedst:i ict easms aerdtdiro n0x f"!f_ffkefdrn8e0l6d_l77o8ckb_0h0+el16d 0x0!=0x7a721b03e381612e
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
77356 52526 0 0 0x4000000 0 syz-executor.1
*173106 70856 0 0 0x4000000 1 syz-executor.0
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff824057a5) at panic+0x15c sys/kern/subr_prf.c:207
pool_cache_get(ffffffff829228d8) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline]
pool_cache_get(ffffffff829228d8) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884
pool_get(ffffffff829228d8,1) at pool_get+0x91 sys/kern/subr_pool.c:572
m_get(1,1) at m_get+0x4c sys/kern/uipc_mbuf.c:250
m_getuio(ffff8000230f3548,1,1000,ffff8000230f3610) at m_getuio+0xbe sys/kern/uipc_socket.c:592
sosend(fffffd8066789b08,0,ffff8000230f3610,0,0,2) at sosend+0x54e sys/kern/uipc_socket.c:542
sendit(ffff800020e374f8,8,ffff8000230f36f0,2,ffff8000230f37d0) at sendit+0x52b sys/kern/uipc_syscalls.c:657
sys_sendto(ffff800020e374f8,ffff8000230f3788,ffff8000230f37d0) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:522
syscall(ffff8000230f3850) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000230f3850) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x35aa18d92f0, count: 4
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
pool_cache_item_magic_check: mbufpl cpu free list modified: item addr 0xfffffd806d778b00+16 0x0!=0x7a721b03e381612e
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff824057a5) at panic+0x15c sys/kern/subr_prf.c:207
pool_cache_get(ffffffff829228d8) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline]
pool_cache_get(ffffffff829228d8) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884
pool_get(ffffffff829228d8,1) at pool_get+0x91 sys/kern/subr_pool.c:572
m_get(1,1) at m_get+0x4c sys/kern/uipc_mbuf.c:250
m_getuio(ffff8000230f3548,1,1000,ffff8000230f3610) at m_getuio+0xbe sys/kern/uipc_socket.c:592
sosend(fffffd8066789b08,0,ffff8000230f3610,0,0,2) at sosend+0x54e sys/kern/uipc_socket.c:542
sendit(ffff800020e374f8,8,ffff8000230f36f0,2,ffff8000230f37d0) at sendit+0x52b sys/kern/uipc_syscalls.c:657
sys_sendto(ffff800020e374f8,ffff8000230f3788,ffff8000230f37d0) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:522
syscall(ffff8000230f3850) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000230f3850) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x35aa18d92f0, count: -11
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff8000230f3270
rbx 0xffff8000230f3320
rdx 0x8b
rcx 0x2
rax 0x1
r8 0xffffffff813f032f kprintf+0x16f
r9 0x1
r10 0x2
r11 0xeeefdf095bf047a7
r12 0x3000000008
r13 0xffff8000230f3280
r14 0x100
r15 0x1
rip 0xffffffff812c6398 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff8000230f3260
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor.0) pid=173106 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=32, usrpri=86, nice=20
forw=0xffffffffffffffff, list=0xffff800020e37288,0xffff800020e383a8
process=0xffff800020eb5398 user=0xffff8000230ee000, vmspace=0xfffffd807efff5c0
estcpu=36, cpticks=3, pctcpu=0.0
user=0, sys=3, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
52526 231469 92551 0 2 0 syz-executor.1
52526 77356 92551 0 7 0x4000000 syz-executor.1
70856 316486 34275 0 2 0 syz-executor.0
*70856 173106 34275 0 7 0x4000000 syz-executor.0
82920 441096 0 0 3 0x14200 bored sosplice
28500 276687 0 0 3 0x14280 nfsidl nfsio
27892 87059 0 0 3 0x14280 nfsidl nfsio
57647 418050 0 0 3 0x14280 nfsidl nfsio
29258 157838 0 0 3 0x14280 nfsidl nfsio
30524 213940 0 0 3 0x14280 nfsidl nfsio
69224 305102 0 0 3 0x14280 nfsidl nfsio
43724 130582 0 0 3 0x14280 nfsidl nfsio
3845 254482 0 0 3 0x14280 nfsidl nfsio
20047 379640 0 0 3 0x14280 nfsidl nfsio
21779 231296 0 0 3 0x14280 nfsidl nfsio
25336 234527 0 0 3 0x14280 nfsidl nfsio
37602 13457 0 0 3 0x14280 nfsidl nfsio
78018 435095 0 0 3 0x14280 nfsidl nfsio
10042 189849 0 0 3 0x14280 nfsidl nfsio
31077 46914 0 0 3 0x14280 nfsidl nfsio
64030 273466 0 0 3 0x14280 nfsidl nfsio
35936 54089 0 0 3 0x14280 nfsidl nfsio
3763 345391 0 0 3 0x14280 nfsidl nfsio
18252 89133 0 0 3 0x14280 nfsidl nfsio
25872 72299 0 0 3 0x14280 nfsidl nfsio
92551 304138 22461 0 2 0x482 syz-executor.1
34275 322203 22461 0 2 0x482 syz-executor.0
22461 79068 77756 0 2 0x482 syz-fuzzer
22461 254618 77756 0 3 0x4000082 nanosleep syz-fuzzer
22461 9562 77756 0 3 0x4000082 thrsleep syz-fuzzer
22461 83078 77756 0 3 0x4000082 thrsleep syz-fuzzer
22461 370904 77756 0 3 0x4000082 thrsleep syz-fuzzer
22461 369337 77756 0 3 0x4000082 thrsleep syz-fuzzer
22461 338075 77756 0 3 0x4000082 thrsleep syz-fuzzer
22461 493577 77756 0 3 0x4000082 thrsleep syz-fuzzer
22461 134091 77756 0 3 0x4000082 kqread syz-fuzzer
22461 310383 77756 0 3 0x4000082 thrsleep syz-fuzzer
77756 314508 62037 0 3 0x10008a pause ksh
62037 19417 96281 0 3 0x92 select sshd
96454 125652 1 0 3 0x100083 ttyin getty
96281 436814 1 0 3 0x80 select sshd
94405 32255 97463 74 3 0x100092 bpf pflogd
97463 203969 1 0 3 0x80 netio pflogd
6641 288247 80301 73 3 0x100090 kqread syslogd
80301 93743 1 0 3 0x100082 netio syslogd
20517 27519 1 77 3 0x100090 poll dhclient
50006 252942 1 0 3 0x80 poll dhclient
61610 290182 0 0 3 0x14200 bored smr
47258 210333 0 0 2 0x14200 zerothread
40647 329054 0 0 3 0x14200 aiodoned aiodoned
30483 42936 0 0 3 0x14200 syncer update
69780 311211 0 0 3 0x14200 cleaner cleaner
68881 50249 0 0 3 0x14200 reaper reaper
81732 73993 0 0 3 0x14200 pgdaemon pagedaemon
27177 251457 0 0 3 0x14200 bored crynlk
14947 151976 0 0 3 0x14200 bored crypto
80609 113116 0 0 3 0x40014200 acpi0 acpi0
95925 506052 0 0 3 0x40014200 idle1
61666 475051 0 0 3 0x14200 bored softnet
70534 323478 0 0 3 0x14200 bored systqmp
81268 237258 0 0 3 0x14200 bored systq
44582 523786 0 0 3 0x40014200 bored softclock
42181 494268 0 0 3 0x40014200 idle0
1 439489 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9500 6534K 6534K 78643K 10665 0
pcb 15 8K 8K 78643K 25 0
rtable 109 3K 6K 78643K 243 0
ifaddr 55 12K 12K 78643K 69 0
counters 43 33K 33K 78643K 43 0
ioctlops 0 0K 4K 78643K 1478 0
iov 0 0K 24K 78643K 13 0
mount 1 1K 1K 78643K 1 0
vnodes 1219 77K 77K 78643K 1239 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 4 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 0K 78643K 39 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1824 197K 290K 78643K 13058 0
file desc 6 17K 25K 78643K 123 0
proc 61 63K 95K 78643K 449 0
subproc 32 2K 2K 78643K 34 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
in_multi 40 2K 2K 78643K 48 0
ether_multi 2 0K 0K 78643K 2 0
mrt 3 0K 0K 78643K 3 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 43 201K 201K 78643K 43 0
exec 0 0K 1K 78643K 213 0
pagedep 1 8K 8K 78643K 1 0
inodedep 1 32K 32K 78643K 1 0
newblk 1 0K 0K 78643K 1 0
VM swap 7 26K 26K 78643K 7 0
UVM amap 130 23K 23K 78643K 1306 0
UVM aobj 9 4K 4K 78643K 9 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 2 0
NDP 8 0K 0K 78643K 14 0
temp 79 3853K 3917K 78643K 2247 0
kqueue 3 4K 4K 78643K 3 0
SYN cache 2 16K 16K 78643K 2 0
ddb{1}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 6 0 0 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtpcb 80 23 0 21 1 0 1 1 0 8 0
rtentry 112 48 0 3 2 0 2 2 0 8 0
unpcb 120 216 0 202 2 0 2 2 0 8 1
syncache 264 4 0 4 1 1 0 1 0 8 0
tcpqe 32 677 0 677 1 1 0 1 0 8 0
tcpcb 544 22 0 18 1 0 1 1 0 8 0
inpcb 296 165 0 156 2 0 2 2 0 8 1
rttmr 72 1 0 0 1 0 1 1 0 8 0
nd6 48 8 0 2 1 0 1 1 0 8 0
pffrag 232 1 0 0 1 0 1 1 0 482 0
pffrnode 88 1 0 0 1 0 1 1 0 8 0
pffrent 40 2 0 1 1 0 1 1 0 8 0
pfosfp 40 846 0 423 5 0 5 5 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfrktable 1344 14 0 14 1 0 1 1 0 8 1
pfstitem 24 17 0 3 1 0 1 1 0 8 0
pfstkey 112 17 0 3 1 0 1 1 0 8 0
pfstate 328 17 0 3 2 0 2 2 0 8 0
pfrule 1360 23 0 18 2 1 1 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 188 0 0 12 0 12 12 0 8 0
art_table 32 189 0 0 2 0 2 2 0 8 0
art_node 16 47 0 6 1 0 1 1 0 8 0
sysvmsgpl 40 6 0 3 1 0 1 1 0 8 0
semupl 112 5 0 5 1 1 0 1 0 8 0
semapl 112 31 0 21 1 0 1 1 0 8 0
shmpl 112 6 0 0 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1551 0 142 89 0 89 89 0 8 0
ffsino 272 1551 0 142 96 1 95 95 0 8 0
nchpl 144 1913 0 302 60 0 60 60 0 8 0
uvmvnodes 72 1607 0 0 30 0 30 30 0 8 0
vnodes 208 1607 0 0 85 0 85 85 0 8 0
namei 1024 5070 0 5070 2 1 1 1 0 8 1
percpumem 16 32 0 0 1 0 1 1 0 8 0
pfiaddrpl 120 4 0 4 1 0 1 1 0 8 1
scxspl 192 5658 0 5658 8 7 1 7 0 8 1
plimitpl 152 15 0 7 1 0 1 1 0 8 0
sigapl 424 359 0 306 6 0 6 6 0 8 0
futexpl 56 1209 0 1209 1 0 1 1 0 8 1
knotepl 112 61 0 42 1 0 1 1 0 8 0
kqueuepl 144 6 0 4 1 0 1 1 0 8 0
pipepl 304 92 0 82 2 1 1 2 0 8 0
fdescpl 496 323 0 306 3 0 3 3 0 8 0
filepl 152 1728 0 1622 6 1 5 5 0 8 0
lockfpl 104 10 0 9 1 0 1 1 0 8 0
lockfspl 48 5 0 4 1 0 1 1 0 8 0
sessionpl 112 18 0 7 1 0 1 1 0 8 0
pgrppl 48 18 0 7 1 0 1 1 0 8 0
ucredpl 96 109 0 100 1 0 1 1 0 8 0
zombiepl 144 306 0 306 2 1 1 1 0 8 1
processpl 992 359 0 306 8 1 7 7 0 8 0
procpl 624 558 0 494 6 0 6 6 0 8 1
sosppl 128 1 0 1 1 0 1 1 0 8 1
sockpl 400 404 0 379 6 1 5 5 0 8 2
mcl64k 65536 2 0 0 1 0 1 1 0 8 0
mcl12k 12288 5 0 0 1 0 1 1 0 8 0
mcl9k 9216 1 0 0 1 0 1 1 0 8 0
mcl8k 8192 3 0 0 1 0 1 1 0 8 0
mcl4k 4096 3 0 0 1 0 1 1 0 8 0
mcl2k 2048 261 0 0 32 0 32 32 0 8 0
mtagpl 96 5 0 0 1 0 1 1 0 8 0
mbufpl 256 269 0 0 16 0 16 16 0 8 0
bufpl 280 3525 0 132 243 0 243 243 0 8 0
anonpl 16 45916 0 29249 69 1 68 68 0 124 0
amapchunkpl 152 1566 0 1400 9 2 7 9 0 158 0
amappl16 192 1366 0 485 45 0 45 45 0 8 0
amappl15 184 1 0 0 1 0 1 1 0 8 0
amappl14 176 33 0 27 1 0 1 1 0 8 0
amappl13 168 79 0 73 1 0 1 1 0 8 0
amappl12 160 10 0 7 1 0 1 1 0 8 0
amappl11 152 57 0 42 1 0 1 1 0 8 0
amappl10 144 30 0 22 1 0 1 1 0 8 0
amappl9 136 430 0 426 1 0 1 1 0 8 0
amappl8 128 395 0 358 2 0 2 2 0 8 0
amappl7 120 119 0 107 1 0 1 1 0 8 0
amappl6 112 22 0 19 2 1 1 1 0 8 0
amappl5 104 218 0 202 1 0 1 1 0 8 0
amappl4 96 535 0 505 1 0 1 1 0 8 0
amappl3 88 113 0 104 1 0 1 1 0 8 0
amappl2 80 1615 0 1539 2 0 2 2 0 8 0
amappl1 72 18218 0 17761 23 13 10 18 0 8 0
amappl 80 787 0 740 2 0 2 2 0 84 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
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 64 8 0 0 1 0 1 1 0 8 0
uaddrrnd 24 323 0 306 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 323 0 306 1 0 1 1 0 8 0
vmmpekpl 168 6561 0 6522 2 0 2 2 0 8 0
vmmpepl 168 47497 0 45331 125 15 110 116 0 357 15
vmsppl 368 322 0 306 2 0 2 2 0 8 0
pdppl 4096 653 0 612 7 1 6 6 0 8 0
pvpl 32 160390 0 140383 167 0 167 167 0 265 4
pmappl 232 322 0 306 2 1 1 2 0 8 0
extentpl 40 53 0 36 1 0 1 1 0 8 0
phpool 112 280 0 7 8 0 8 8 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffffffff8274cff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352
x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__sanitizer_cov_trace_cmp4(8c95e,8c95d) at __sanitizer_cov_trace_cmp4+0x64 sys/dev/kcov.c:137
__mp_lock(ffffffff82922230) at __mp_lock+0x139 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82922230) at __mp_lock+0x139 sys/kern/kern_lock.c:147
softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:89
Xsoftclock() at Xsoftclock+0x1f
cnputc(64) at cnputc+0x4c sys/dev/cons.c:239
kputchar(64,5,0) at kputchar+0x219 sys/kern/subr_prf.c:343
kprintf() at kprintf+0x1b7c sys/kern/subr_prf.c:1052
panic(ffffffff824006f2) at panic+0xf3 vprintf sys/kern/subr_prf.c:528 [inline]
panic(ffffffff824006f2) at panic+0xf3 sys/kern/subr_prf.c:197
__assert(ffffffff8246e473,ffffffff8245447f,29e,ffffffff8243167f) at __assert+0x2b sys/kern/subr_prf.c:154
proc_trampoline_mp() at proc_trampoline_mp+0x123
end trace frame: 0x0, count: 2
ddb{0}> trace
x86_ipi_db(ffffffff8274cff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352
x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__sanitizer_cov_trace_cmp4(8c95e,8c95d) at __sanitizer_cov_trace_cmp4+0x64 sys/dev/kcov.c:137
__mp_lock(ffffffff82922230) at __mp_lock+0x139 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82922230) at __mp_lock+0x139 sys/kern/kern_lock.c:147
softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:89
Xsoftclock() at Xsoftclock+0x1f
cnputc(64) at cnputc+0x4c sys/dev/cons.c:239
kputchar(64,5,0) at kputchar+0x219 sys/kern/subr_prf.c:343
kprintf() at kprintf+0x1b7c sys/kern/subr_prf.c:1052
panic(ffffffff824006f2) at panic+0xf3 vprintf sys/kern/subr_prf.c:528 [inline]
panic(ffffffff824006f2) at panic+0xf3 sys/kern/subr_prf.c:197
__assert(ffffffff8246e473,ffffffff8245447f,29e,ffffffff8243167f) at __assert+0x2b sys/kern/subr_prf.c:154
proc_trampoline_mp() at proc_trampoline_mp+0x123
end trace frame: 0x0, count: -13
ddb{0}> machine ddbcpu 1
Stopped at db_enter+0x18: addq $0x8,%rsp
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff824057a5) at panic+0x15c sys/kern/subr_prf.c:207
pool_cache_get(ffffffff829228d8) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline]
pool_cache_get(ffffffff829228d8) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884
pool_get(ffffffff829228d8,1) at pool_get+0x91 sys/kern/subr_pool.c:572
m_get(1,1) at m_get+0x4c sys/kern/uipc_mbuf.c:250
m_getuio(ffff8000230f3548,1,1000,ffff8000230f3610) at m_getuio+0xbe sys/kern/uipc_socket.c:592
sosend(fffffd8066789b08,0,ffff8000230f3610,0,0,2) at sosend+0x54e sys/kern/uipc_socket.c:542
sendit(ffff800020e374f8,8,ffff8000230f36f0,2,ffff8000230f37d0) at sendit+0x52b sys/kern/uipc_syscalls.c:657
sys_sendto(ffff800020e374f8,ffff8000230f3788,ffff8000230f37d0) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:522
syscall(ffff8000230f3850) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000230f3850) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x35aa18d92f0, count: 4
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff824057a5) at panic+0x15c sys/kern/subr_prf.c:207
pool_cache_get(ffffffff829228d8) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline]
pool_cache_get(ffffffff829228d8) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884
pool_get(ffffffff829228d8,1) at pool_get+0x91 sys/kern/subr_pool.c:572
m_get(1,1) at m_get+0x4c sys/kern/uipc_mbuf.c:250
m_getuio(ffff8000230f3548,1,1000,ffff8000230f3610) at m_getuio+0xbe sys/kern/uipc_socket.c:592
sosend(fffffd8066789b08,0,ffff8000230f3610,0,0,2) at sosend+0x54e sys/kern/uipc_socket.c:542
sendit(ffff800020e374f8,8,ffff8000230f36f0,2,ffff8000230f37d0) at sendit+0x52b sys/kern/uipc_syscalls.c:657
sys_sendto(ffff800020e374f8,ffff8000230f3788,ffff8000230f37d0) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:522
syscall(ffff8000230f3850) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000230f3850) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x35aa18d92f0, count: -11
---
This report is generated by a bot. It may contain errors.
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Anton Lindqvist
Jul 19, 2020, 3:10:25 AM7/19/20
to syzbot, syzkaller-o...@googlegroups.com
#syz dup: pool: cpu free list modified: mbufpl
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