panic: pool_cache_item_magic_check: mpbaufnpilc :c pkue rfrneeel ldiisatgn omsotdiicf iaeds:s eirtteimo na d"d!r_k e0xr
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syzbot
Jun 21, 2020, 9:29:12 AM6/21/20
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following crash on:
HEAD commit: 9a712520 bcmtmon(4)
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=14b5dc6e100000
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=fcba108146de7aec4c72
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+fcba10...@syzkaller.appspotmail.com
panic: pool_cache_item_magic_check: mpbaufnpilc :c pkue rfrneeel ldiisatgn omsotdiicf iaeds:s eirtteimo na d"d!r_k e0xrnffefl_ffldo8c06k_4ahael02d0()0+"1 f6 a0ixle0!d=:0 xfi5dle36 c"c/6s5y7zck4adl53le1rf/
m
anStopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
506562 60666 0 0 0x4000000 1 syz-executor.1
*177232 84403 0 0x14000 0x200 0 softnet
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff823e87fe) at panic+0x15c sys/kern/subr_prf.c:207
pool_cache_get(ffffffff828c78a0) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline]
pool_cache_get(ffffffff828c78a0) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884
pool_get(ffffffff828c78a0,2) at pool_get+0x91 sys/kern/subr_pool.c:572
m_copym(fffffd8064aa0000,2c00,3a4,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline]
m_copym(fffffd8064aa0000,2c00,3a4,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667
tcp_output(ffff800000ad7100) at tcp_output+0x15ba sys/netinet/tcp_output.c:673
tcp_input(ffff800020db90b8,ffff800020db90c4,6,2) at tcp_input+0x2356
ip_deliver(ffff800020db90b8,ffff800020db90c4,6,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668
ip_ours(ffff800020db90b8,ffff800020db90c4,ffff800020d98750,0) at ip_ours+0x412
ip_input_if(ffff800020db90b8,ffff800020db90c4,4,0,ffff80000017b2a8) at ip_input_if+0x6ce
ipv4_input(ffff80000017b2a8,fffffd80689f0f00) at ipv4_input+0x48 sys/netinet/ip_input.c:215
ether_input(ffff80000017b2a8,fffffd80689f0f00,0) at ether_input+0x345 sys/net/if_ethersubr.c:461
if_input_process(ffff80000017b2a8,ffff800020db91e8) at if_input_process+0x10b if_ih_input sys/net/if.c:908 [inline]
if_input_process(ffff80000017b2a8,ffff800020db91e8) at if_input_process+0x10b sys/net/if.c:942
ifiq_process(ffff80000017b6a0) at ifiq_process+0x80 sys/net/ifq.c:646
end trace frame: 0xffff800020db92c0, count: 0
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{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
pool_cache_item_magic_check: mbufpl cpu free list modified: item addr 0xfffffd8064aa0200+16 0x0!=0x5d36cc657c4d531f
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff823e87fe) at panic+0x15c sys/kern/subr_prf.c:207
pool_cache_get(ffffffff828c78a0) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline]
pool_cache_get(ffffffff828c78a0) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884
pool_get(ffffffff828c78a0,2) at pool_get+0x91 sys/kern/subr_pool.c:572
m_copym(fffffd8064aa0000,2c00,3a4,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline]
m_copym(fffffd8064aa0000,2c00,3a4,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667
tcp_output(ffff800000ad7100) at tcp_output+0x15ba sys/netinet/tcp_output.c:673
tcp_input(ffff800020db90b8,ffff800020db90c4,6,2) at tcp_input+0x2356
ip_deliver(ffff800020db90b8,ffff800020db90c4,6,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668
ip_ours(ffff800020db90b8,ffff800020db90c4,ffff800020d98750,0) at ip_ours+0x412
ip_input_if(ffff800020db90b8,ffff800020db90c4,4,0,ffff80000017b2a8) at ip_input_if+0x6ce
ipv4_input(ffff80000017b2a8,fffffd80689f0f00) at ipv4_input+0x48 sys/netinet/ip_input.c:215
ether_input(ffff80000017b2a8,fffffd80689f0f00,0) at ether_input+0x345 sys/net/if_ethersubr.c:461
if_input_process(ffff80000017b2a8,ffff800020db91e8) at if_input_process+0x10b if_ih_input sys/net/if.c:908 [inline]
if_input_process(ffff80000017b2a8,ffff800020db91e8) at if_input_process+0x10b sys/net/if.c:942
ifiq_process(ffff80000017b6a0) at ifiq_process+0x80 sys/net/ifq.c:646
taskq_thread(ffff80000002c000) at taskq_thread+0xec sys/kern/kern_task.c:437
end trace frame: 0x0, count: -15
ddb{0}> show registers
rdi 0
rsi 0x1
rbp 0xffff800020db8950
rbx 0xffff800020db8a00
rdx 0x8b
rcx 0x2
rax 0x1
r8 0xffffffff821c2b4f kprintf+0x16f
r9 0x1
r10 0x2
r11 0x5c45a98cceae008f
r12 0x3000000008
r13 0xffff800020db8960
r14 0x100
r15 0x1
rip 0xffffffff811a3778 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800020db8940
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{0}> show proc
PROC (softnet) pid=177232 stat=onproc
flags process=14000<NOZOMBIE,SYSTEM> proc=200<SYSTEM>
pri=32, usrpri=50, nice=20
forw=0xffffffffffffffff, list=0xffff800020d98c30,0xffff800020d984f0
process=0xffff800020d9a000 user=0xffff800020db4000, vmspace=0xffffffff82910998
estcpu=0, cpticks=2, pctcpu=0.10
user=0, sys=2, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
60666 416505 81888 0 2 0 syz-executor.1
60666 506562 81888 0 7 0x4000000 syz-executor.1
44755 318734 75344 0 2 0 syz-executor.0
40727 485260 1 0 3 0x100083 ttyin getty
95213 130740 0 0 3 0x14280 nfsidl nfsio
74584 453834 0 0 3 0x14280 nfsidl nfsio
56664 347127 0 0 3 0x14280 nfsidl nfsio
80231 212554 0 0 3 0x14280 nfsidl nfsio
84960 340144 0 0 3 0x14280 nfsidl nfsio
85889 16721 0 0 3 0x14280 nfsidl nfsio
19483 140785 0 0 3 0x14280 nfsidl nfsio
23113 192290 0 0 3 0x14280 nfsidl nfsio
71699 68423 0 0 3 0x14280 nfsidl nfsio
75066 43041 0 0 3 0x14280 nfsidl nfsio
63839 169501 0 0 3 0x14280 nfsidl nfsio
53009 111659 0 0 3 0x14280 nfsidl nfsio
43298 417216 0 0 3 0x14280 nfsidl nfsio
53678 510174 0 0 3 0x14280 nfsidl nfsio
2059 423066 0 0 3 0x14280 nfsidl nfsio
38530 389955 0 0 3 0x14280 nfsidl nfsio
2259 96287 0 0 3 0x14280 nfsidl nfsio
78983 16453 0 0 3 0x14280 nfsidl nfsio
57479 12886 0 0 3 0x14280 nfsidl nfsio
2643 11623 0 0 3 0x14280 nfsidl nfsio
75344 395688 68659 0 3 0x82 nanosleep syz-executor.0
94079 478710 0 0 3 0x14200 acct acct
51804 310284 0 0 3 0x14200 bored sosplice
81888 321345 68659 0 3 0x82 nanosleep syz-executor.1
68659 77440 15625 0 3 0x82 thrsleep syz-fuzzer
68659 463451 15625 0 3 0x4000082 nanosleep syz-fuzzer
68659 244755 15625 0 3 0x4000082 thrsleep syz-fuzzer
68659 300907 15625 0 3 0x4000082 thrsleep syz-fuzzer
68659 125943 15625 0 3 0x4000082 kqread syz-fuzzer
68659 193707 15625 0 3 0x4000082 nanosleep syz-fuzzer
68659 382974 15625 0 3 0x4000082 thrsleep syz-fuzzer
68659 193424 15625 0 3 0x4000082 thrsleep syz-fuzzer
68659 467465 15625 0 3 0x4000082 thrsleep syz-fuzzer
68659 261822 15625 0 3 0x4000082 thrsleep syz-fuzzer
15625 302813 38286 0 3 0x10008a pause ksh
38286 380759 70409 0 2 0x12 sshd
70409 35332 1 0 3 0x80 select sshd
44777 481647 65822 74 3 0x100092 bpf pflogd
65822 441129 1 0 3 0x80 netio pflogd
14117 448345 25590 73 3 0x100090 kqread syslogd
25590 168350 1 0 3 0x100082 netio syslogd
23265 287854 1 77 3 0x100090 poll dhclient
45359 110023 1 0 3 0x80 poll dhclient
4483 41253 0 0 3 0x14200 bored smr
195 225643 0 0 2 0x14200 zerothread
34052 108023 0 0 3 0x14200 aiodoned aiodoned
99004 350572 0 0 3 0x14200 syncer update
12316 88776 0 0 3 0x14200 cleaner cleaner
32839 272218 0 0 3 0x14200 reaper reaper
38845 503932 0 0 3 0x14200 pgdaemon pagedaemon
53142 254581 0 0 3 0x14200 bored crynlk
76143 125990 0 0 3 0x14200 bored crypto
97589 361624 0 0 3 0x40014200 acpi0 acpi0
8538 76628 0 0 3 0x40014200 idle1
*84403 177232 0 0 7 0x14200 softnet
49695 181986 0 0 3 0x14200 bored systqmp
15143 379534 0 0 3 0x14200 bored systq
43929 29836 0 0 3 0x40014200 bored softclock
55739 385439 0 0 3 0x40014200 idle0
1 174788 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 60666 (syz-executor.1) thread 0xffff800020ed7618 (416505)
shared rwlock vmmaplk r = 0 (0xfffffd807efffa28)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1448
#2 uvm_fault+0x7f sys/uvm/uvm_fault.c:524
#3 pageflttrap+0x1b8 sys/arch/amd64/amd64/trap.c:221
#4 usertrap+0x21a sys/arch/amd64/amd64/trap.c:384
#5 recall_trap+0x8
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82899198)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180
#2 usertrap+0x21a sys/arch/amd64/amd64/trap.c:384
#3 recall_trap+0x8
Process 84403 (softnet) thread 0xffff800020d98750 (177232)
exclusive rwlock netlock r = 0 (0xffffffff82707e28)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 if_input_process+0x85 sys/net/if.c:941
#2 ifiq_process+0x80 sys/net/ifq.c:646
#3 taskq_thread+0xec sys/kern/kern_task.c:437
#4 proc_trampoline+0x1c
shared rwlock softnet r = 0 (0xffff80000002c070)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 taskq_thread+0xdf sys/kern/kern_task.c:436
#2 proc_trampoline+0x1c
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9528 6416K 7064K 78643K 12321 0
pcb 13 8K 8K 78643K 100 0
rtable 109 4K 6K 78643K 473 0
ifaddr 92 19K 19K 78643K 225 0
sysctl 3 1K 1K 78643K 3 0
counters 43 33K 34K 78643K 83 0
ioctlops 0 0K 4K 78643K 1541 0
iov 0 0K 24K 78643K 343 0
mount 1 1K 1K 78643K 1 0
vnodes 1224 77K 77K 78643K 1732 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 7 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 0K 78643K 73 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1824 197K 290K 78643K 13058 0
file desc 6 17K 25K 78643K 566 0
sigio 0 0K 0K 78643K 13 0
proc 63 63K 95K 78643K 550 0
subproc 32 2K 2K 78643K 51 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 35 0
in_multi 87 4K 4K 78643K 182 0
ether_multi 1 0K 0K 78643K 17 0
mrt 0 0K 0K 78643K 2 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 55 254K 254K 78643K 55 0
exec 0 0K 1K 78643K 264 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 144 72K 73K 78643K 2895 0
UVM aobj 18 2K 2K 78643K 20 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 79 0
NDP 13 0K 0K 78643K 47 0
temp 144 3859K 3923K 78643K 8665 0
kqueue 3 4K 9K 78643K 26 0
SYN cache 2 16K 16K 78643K 2 0
ddb{0}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 9 0 2 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtpcb 80 41 0 39 1 0 1 1 0 8 0
rtentry 112 85 0 43 2 0 2 2 0 8 0
unpcb 120 291 0 281 1 0 1 1 0 8 0
syncache 264 7 0 7 2 2 0 1 0 8 0
tcpqe 32 28 0 28 1 1 0 1 0 8 0
tcpcb 544 314 0 310 1 0 1 1 0 8 0
inpcb 280 737 0 730 3 1 2 2 0 8 1
rttmr 72 1 0 1 1 1 0 1 0 8 0
nd6 48 21 0 18 1 0 1 1 0 8 0
pkpcb 40 6 0 6 2 2 0 1 0 8 0
ppxss 1128 3 0 3 2 2 0 1 0 8 0
pffrag 232 5 0 5 2 1 1 1 0 482 1
pffrnode 88 5 0 5 2 1 1 1 0 8 1
pffrent 40 55 0 55 2 1 1 1 0 8 1
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 9 0 8 2 1 1 1 0 8 0
pfstitem 24 26 0 13 1 0 1 1 0 8 0
pfstkey 112 26 0 13 1 0 1 1 0 8 0
pfstate 328 26 0 13 3 0 3 3 0 8 0
pfrule 1360 34 0 21 3 1 2 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 408 0 223 15 3 12 15 0 8 0
art_table 32 409 0 223 2 0 2 2 0 8 0
art_node 16 84 0 44 1 0 1 1 0 8 0
sysvmsgpl 40 77 0 37 1 0 1 1 0 8 0
semupl 112 1 0 1 1 1 0 1 0 8 0
semapl 112 71 0 61 1 0 1 1 0 8 0
shmpl 112 18 0 2 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 2191 0 788 89 0 89 89 0 8 0
ffsino 272 2191 0 788 94 0 94 94 0 8 0
nchpl 144 3318 0 1725 60 0 60 60 0 8 0
uvmvnodes 72 2645 0 0 49 0 49 49 0 8 0
vnodes 208 2645 0 0 140 0 140 140 0 8 0
namei 1024 9466 0 9466 1 0 1 1 0 8 1
percpumem 16 52 0 20 1 0 1 1 0 8 0
vcpupl 1984 5 0 0 1 0 1 1 0 8 0
vmpool 560 11 0 6 2 1 1 1 0 8 0
pfiaddrpl 120 2 0 2 1 1 0 1 0 8 0
scsiplug 64 2 0 2 1 1 0 1 0 8 0
scxspl 192 10192 0 10192 14 10 4 7 0 8 4
plimitpl 152 59 0 51 1 0 1 1 0 8 0
sigapl 424 801 0 747 7 0 7 7 0 8 0
futexpl 56 8877 0 8877 1 0 1 1 0 8 1
knotepl 112 96 0 77 1 0 1 1 0 8 0
kqueuepl 144 78 0 74 1 0 1 1 0 8 0
pipelkpl 48 139 0 129 1 0 1 1 0 8 0
pipepl 120 278 0 259 1 0 1 1 0 8 0
fdescpl 496 764 0 747 3 0 3 3 0 8 0
filepl 152 4843 0 4743 5 0 5 5 0 8 1
lockfpl 104 151 0 150 1 0 1 1 0 8 0
lockfspl 48 50 0 49 1 0 1 1 0 8 0
sessionpl 112 20 0 9 1 0 1 1 0 8 0
pgrppl 48 22 0 11 1 0 1 1 0 8 0
ucredpl 96 531 0 522 1 0 1 1 0 8 0
zombiepl 144 747 0 747 1 0 1 1 0 8 1
processpl 984 801 0 747 7 0 7 7 0 8 0
procpl 624 2042 0 1978 6 0 6 6 0 8 0
sosppl 128 8 0 8 3 2 1 1 0 8 1
sockpl 400 1076 0 1057 7 3 4 4 0 8 2
mcl64k 65536 6 0 0 1 0 1 1 0 8 0
mcl16k 16384 1 0 0 1 0 1 1 0 8 0
mcl12k 12288 10 0 0 1 0 1 1 0 8 0
mcl9k 9216 2 0 0 1 0 1 1 0 8 0
mcl8k 8192 5 0 0 1 0 1 1 0 8 0
mcl4k 4096 7 0 0 1 0 1 1 0 8 0
mcl2k2 2112 2 0 0 1 0 1 1 0 8 0
mcl2k 2048 206 0 0 25 0 25 25 0 8 0
mtagpl 80 133 0 0 3 0 3 3 0 8 0
mbufpl 256 526 0 0 32 0 32 32 0 8 0
bufpl 280 4853 0 135 337 0 337 337 0 8 0
anonpl 16 84728 0 68535 82 15 67 81 0 124 1
amapchunkpl 152 4592 0 4446 15 5 10 11 0 158 3
amappl16 192 3741 0 2870 56 11 45 55 0 8 1
amappl15 184 2 0 1 1 0 1 1 0 8 0
amappl14 176 23 0 19 1 0 1 1 0 8 0
amappl13 168 44 0 40 1 0 1 1 0 8 0
amappl12 160 9 0 8 1 0 1 1 0 8 0
amappl11 152 57 0 41 1 0 1 1 0 8 0
amappl10 144 404 0 394 1 0 1 1 0 8 0
amappl9 136 384 0 382 1 0 1 1 0 8 0
amappl8 128 402 0 356 2 0 2 2 0 8 0
amappl7 120 401 0 385 1 0 1 1 0 8 0
amappl6 112 29 0 22 1 0 1 1 0 8 0
amappl5 104 670 0 652 1 0 1 1 0 8 0
amappl4 96 521 0 487 1 0 1 1 0 8 0
amappl3 88 125 0 119 1 0 1 1 0 8 0
amappl2 80 5048 0 4972 2 0 2 2 0 8 0
amappl1 72 26836 0 26385 23 13 10 18 0 8 0
amappl 80 2310 0 2263 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 19 0 2 1 0 1 1 0 8 0
uaddrrnd 24 775 0 753 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 775 0 753 1 0 1 1 0 8 0
vmmpekpl 168 9513 0 9466 3 0 3 3 0 8 0
vmmpepl 168 100138 0 98001 140 36 104 122 0 357 11
vmsppl 368 774 0 753 2 0 2 2 0 8 0
pdppl 4096 1557 0 1511 6 0 6 6 0 8 0
pvpl 32 269172 0 249655 193 22 171 193 0 265 13
pmappl 232 774 0 753 4 2 2 2 0 8 0
extentpl 40 53 0 36 1 0 1 1 0 8 0
phpool 112 291 0 9 9 0 9 9 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff823e87fe) at panic+0x15c sys/kern/subr_prf.c:207
pool_cache_get(ffffffff828c78a0) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline]
pool_cache_get(ffffffff828c78a0) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884
pool_get(ffffffff828c78a0,2) at pool_get+0x91 sys/kern/subr_pool.c:572
m_copym(fffffd8064aa0000,2c00,3a4,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline]
m_copym(fffffd8064aa0000,2c00,3a4,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667
tcp_output(ffff800000ad7100) at tcp_output+0x15ba sys/netinet/tcp_output.c:673
tcp_input(ffff800020db90b8,ffff800020db90c4,6,2) at tcp_input+0x2356
ip_deliver(ffff800020db90b8,ffff800020db90c4,6,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668
ip_ours(ffff800020db90b8,ffff800020db90c4,ffff800020d98750,0) at ip_ours+0x412
ip_input_if(ffff800020db90b8,ffff800020db90c4,4,0,ffff80000017b2a8) at ip_input_if+0x6ce
ipv4_input(ffff80000017b2a8,fffffd80689f0f00) at ipv4_input+0x48 sys/netinet/ip_input.c:215
ether_input(ffff80000017b2a8,fffffd80689f0f00,0) at ether_input+0x345 sys/net/if_ethersubr.c:461
if_input_process(ffff80000017b2a8,ffff800020db91e8) at if_input_process+0x10b if_ih_input sys/net/if.c:908 [inline]
if_input_process(ffff80000017b2a8,ffff800020db91e8) at if_input_process+0x10b sys/net/if.c:942
ifiq_process(ffff80000017b6a0) at ifiq_process+0x80 sys/net/ifq.c:646
taskq_thread(ffff80000002c000) at taskq_thread+0xec sys/kern/kern_task.c:437
end trace frame: 0x0, count: -15
ddb{0}> machine ddbcpu 1
---
This bug 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 bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following crash on:
HEAD commit: 9a712520 bcmtmon(4)
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=14b5dc6e100000
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=fcba108146de7aec4c72
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+fcba10...@syzkaller.appspotmail.com
panic: pool_cache_item_magic_check: mpbaufnpilc :c pkue rfrneeel ldiisatgn omsotdiicf iaeds:s eirtteimo na d"d!r_k e0xrnffefl_ffldo8c06k_4ahael02d0()0+"1 f6 a0ixle0!d=:0 xfi5dle36 c"c/6s5y7zck4adl53le1rf/
m
anStopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
506562 60666 0 0 0x4000000 1 syz-executor.1
*177232 84403 0 0x14000 0x200 0 softnet
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff823e87fe) at panic+0x15c sys/kern/subr_prf.c:207
pool_cache_get(ffffffff828c78a0) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline]
pool_cache_get(ffffffff828c78a0) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884
pool_get(ffffffff828c78a0,2) at pool_get+0x91 sys/kern/subr_pool.c:572
m_copym(fffffd8064aa0000,2c00,3a4,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline]
m_copym(fffffd8064aa0000,2c00,3a4,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667
tcp_output(ffff800000ad7100) at tcp_output+0x15ba sys/netinet/tcp_output.c:673
tcp_input(ffff800020db90b8,ffff800020db90c4,6,2) at tcp_input+0x2356
ip_deliver(ffff800020db90b8,ffff800020db90c4,6,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668
ip_ours(ffff800020db90b8,ffff800020db90c4,ffff800020d98750,0) at ip_ours+0x412
ip_input_if(ffff800020db90b8,ffff800020db90c4,4,0,ffff80000017b2a8) at ip_input_if+0x6ce
ipv4_input(ffff80000017b2a8,fffffd80689f0f00) at ipv4_input+0x48 sys/netinet/ip_input.c:215
ether_input(ffff80000017b2a8,fffffd80689f0f00,0) at ether_input+0x345 sys/net/if_ethersubr.c:461
if_input_process(ffff80000017b2a8,ffff800020db91e8) at if_input_process+0x10b if_ih_input sys/net/if.c:908 [inline]
if_input_process(ffff80000017b2a8,ffff800020db91e8) at if_input_process+0x10b sys/net/if.c:942
ifiq_process(ffff80000017b6a0) at ifiq_process+0x80 sys/net/ifq.c:646
end trace frame: 0xffff800020db92c0, count: 0
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{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
pool_cache_item_magic_check: mbufpl cpu free list modified: item addr 0xfffffd8064aa0200+16 0x0!=0x5d36cc657c4d531f
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff823e87fe) at panic+0x15c sys/kern/subr_prf.c:207
pool_cache_get(ffffffff828c78a0) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline]
pool_cache_get(ffffffff828c78a0) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884
pool_get(ffffffff828c78a0,2) at pool_get+0x91 sys/kern/subr_pool.c:572
m_copym(fffffd8064aa0000,2c00,3a4,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline]
m_copym(fffffd8064aa0000,2c00,3a4,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667
tcp_output(ffff800000ad7100) at tcp_output+0x15ba sys/netinet/tcp_output.c:673
tcp_input(ffff800020db90b8,ffff800020db90c4,6,2) at tcp_input+0x2356
ip_deliver(ffff800020db90b8,ffff800020db90c4,6,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668
ip_ours(ffff800020db90b8,ffff800020db90c4,ffff800020d98750,0) at ip_ours+0x412
ip_input_if(ffff800020db90b8,ffff800020db90c4,4,0,ffff80000017b2a8) at ip_input_if+0x6ce
ipv4_input(ffff80000017b2a8,fffffd80689f0f00) at ipv4_input+0x48 sys/netinet/ip_input.c:215
ether_input(ffff80000017b2a8,fffffd80689f0f00,0) at ether_input+0x345 sys/net/if_ethersubr.c:461
if_input_process(ffff80000017b2a8,ffff800020db91e8) at if_input_process+0x10b if_ih_input sys/net/if.c:908 [inline]
if_input_process(ffff80000017b2a8,ffff800020db91e8) at if_input_process+0x10b sys/net/if.c:942
ifiq_process(ffff80000017b6a0) at ifiq_process+0x80 sys/net/ifq.c:646
taskq_thread(ffff80000002c000) at taskq_thread+0xec sys/kern/kern_task.c:437
end trace frame: 0x0, count: -15
ddb{0}> show registers
rdi 0
rsi 0x1
rbp 0xffff800020db8950
rbx 0xffff800020db8a00
rdx 0x8b
rcx 0x2
rax 0x1
r8 0xffffffff821c2b4f kprintf+0x16f
r9 0x1
r10 0x2
r11 0x5c45a98cceae008f
r12 0x3000000008
r13 0xffff800020db8960
r14 0x100
r15 0x1
rip 0xffffffff811a3778 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800020db8940
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{0}> show proc
PROC (softnet) pid=177232 stat=onproc
flags process=14000<NOZOMBIE,SYSTEM> proc=200<SYSTEM>
pri=32, usrpri=50, nice=20
forw=0xffffffffffffffff, list=0xffff800020d98c30,0xffff800020d984f0
process=0xffff800020d9a000 user=0xffff800020db4000, vmspace=0xffffffff82910998
estcpu=0, cpticks=2, pctcpu=0.10
user=0, sys=2, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
60666 416505 81888 0 2 0 syz-executor.1
60666 506562 81888 0 7 0x4000000 syz-executor.1
44755 318734 75344 0 2 0 syz-executor.0
40727 485260 1 0 3 0x100083 ttyin getty
95213 130740 0 0 3 0x14280 nfsidl nfsio
74584 453834 0 0 3 0x14280 nfsidl nfsio
56664 347127 0 0 3 0x14280 nfsidl nfsio
80231 212554 0 0 3 0x14280 nfsidl nfsio
84960 340144 0 0 3 0x14280 nfsidl nfsio
85889 16721 0 0 3 0x14280 nfsidl nfsio
19483 140785 0 0 3 0x14280 nfsidl nfsio
23113 192290 0 0 3 0x14280 nfsidl nfsio
71699 68423 0 0 3 0x14280 nfsidl nfsio
75066 43041 0 0 3 0x14280 nfsidl nfsio
63839 169501 0 0 3 0x14280 nfsidl nfsio
53009 111659 0 0 3 0x14280 nfsidl nfsio
43298 417216 0 0 3 0x14280 nfsidl nfsio
53678 510174 0 0 3 0x14280 nfsidl nfsio
2059 423066 0 0 3 0x14280 nfsidl nfsio
38530 389955 0 0 3 0x14280 nfsidl nfsio
2259 96287 0 0 3 0x14280 nfsidl nfsio
78983 16453 0 0 3 0x14280 nfsidl nfsio
57479 12886 0 0 3 0x14280 nfsidl nfsio
2643 11623 0 0 3 0x14280 nfsidl nfsio
75344 395688 68659 0 3 0x82 nanosleep syz-executor.0
94079 478710 0 0 3 0x14200 acct acct
51804 310284 0 0 3 0x14200 bored sosplice
81888 321345 68659 0 3 0x82 nanosleep syz-executor.1
68659 77440 15625 0 3 0x82 thrsleep syz-fuzzer
68659 463451 15625 0 3 0x4000082 nanosleep syz-fuzzer
68659 244755 15625 0 3 0x4000082 thrsleep syz-fuzzer
68659 300907 15625 0 3 0x4000082 thrsleep syz-fuzzer
68659 125943 15625 0 3 0x4000082 kqread syz-fuzzer
68659 193707 15625 0 3 0x4000082 nanosleep syz-fuzzer
68659 382974 15625 0 3 0x4000082 thrsleep syz-fuzzer
68659 193424 15625 0 3 0x4000082 thrsleep syz-fuzzer
68659 467465 15625 0 3 0x4000082 thrsleep syz-fuzzer
68659 261822 15625 0 3 0x4000082 thrsleep syz-fuzzer
15625 302813 38286 0 3 0x10008a pause ksh
38286 380759 70409 0 2 0x12 sshd
70409 35332 1 0 3 0x80 select sshd
44777 481647 65822 74 3 0x100092 bpf pflogd
65822 441129 1 0 3 0x80 netio pflogd
14117 448345 25590 73 3 0x100090 kqread syslogd
25590 168350 1 0 3 0x100082 netio syslogd
23265 287854 1 77 3 0x100090 poll dhclient
45359 110023 1 0 3 0x80 poll dhclient
4483 41253 0 0 3 0x14200 bored smr
195 225643 0 0 2 0x14200 zerothread
34052 108023 0 0 3 0x14200 aiodoned aiodoned
99004 350572 0 0 3 0x14200 syncer update
12316 88776 0 0 3 0x14200 cleaner cleaner
32839 272218 0 0 3 0x14200 reaper reaper
38845 503932 0 0 3 0x14200 pgdaemon pagedaemon
53142 254581 0 0 3 0x14200 bored crynlk
76143 125990 0 0 3 0x14200 bored crypto
97589 361624 0 0 3 0x40014200 acpi0 acpi0
8538 76628 0 0 3 0x40014200 idle1
*84403 177232 0 0 7 0x14200 softnet
49695 181986 0 0 3 0x14200 bored systqmp
15143 379534 0 0 3 0x14200 bored systq
43929 29836 0 0 3 0x40014200 bored softclock
55739 385439 0 0 3 0x40014200 idle0
1 174788 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 60666 (syz-executor.1) thread 0xffff800020ed7618 (416505)
shared rwlock vmmaplk r = 0 (0xfffffd807efffa28)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1448
#2 uvm_fault+0x7f sys/uvm/uvm_fault.c:524
#3 pageflttrap+0x1b8 sys/arch/amd64/amd64/trap.c:221
#4 usertrap+0x21a sys/arch/amd64/amd64/trap.c:384
#5 recall_trap+0x8
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82899198)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180
#2 usertrap+0x21a sys/arch/amd64/amd64/trap.c:384
#3 recall_trap+0x8
Process 84403 (softnet) thread 0xffff800020d98750 (177232)
exclusive rwlock netlock r = 0 (0xffffffff82707e28)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 if_input_process+0x85 sys/net/if.c:941
#2 ifiq_process+0x80 sys/net/ifq.c:646
#3 taskq_thread+0xec sys/kern/kern_task.c:437
#4 proc_trampoline+0x1c
shared rwlock softnet r = 0 (0xffff80000002c070)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 taskq_thread+0xdf sys/kern/kern_task.c:436
#2 proc_trampoline+0x1c
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9528 6416K 7064K 78643K 12321 0
pcb 13 8K 8K 78643K 100 0
rtable 109 4K 6K 78643K 473 0
ifaddr 92 19K 19K 78643K 225 0
sysctl 3 1K 1K 78643K 3 0
counters 43 33K 34K 78643K 83 0
ioctlops 0 0K 4K 78643K 1541 0
iov 0 0K 24K 78643K 343 0
mount 1 1K 1K 78643K 1 0
vnodes 1224 77K 77K 78643K 1732 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 7 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 0K 78643K 73 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1824 197K 290K 78643K 13058 0
file desc 6 17K 25K 78643K 566 0
sigio 0 0K 0K 78643K 13 0
proc 63 63K 95K 78643K 550 0
subproc 32 2K 2K 78643K 51 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 35 0
in_multi 87 4K 4K 78643K 182 0
ether_multi 1 0K 0K 78643K 17 0
mrt 0 0K 0K 78643K 2 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 55 254K 254K 78643K 55 0
exec 0 0K 1K 78643K 264 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 144 72K 73K 78643K 2895 0
UVM aobj 18 2K 2K 78643K 20 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 79 0
NDP 13 0K 0K 78643K 47 0
temp 144 3859K 3923K 78643K 8665 0
kqueue 3 4K 9K 78643K 26 0
SYN cache 2 16K 16K 78643K 2 0
ddb{0}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 9 0 2 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtpcb 80 41 0 39 1 0 1 1 0 8 0
rtentry 112 85 0 43 2 0 2 2 0 8 0
unpcb 120 291 0 281 1 0 1 1 0 8 0
syncache 264 7 0 7 2 2 0 1 0 8 0
tcpqe 32 28 0 28 1 1 0 1 0 8 0
tcpcb 544 314 0 310 1 0 1 1 0 8 0
inpcb 280 737 0 730 3 1 2 2 0 8 1
rttmr 72 1 0 1 1 1 0 1 0 8 0
nd6 48 21 0 18 1 0 1 1 0 8 0
pkpcb 40 6 0 6 2 2 0 1 0 8 0
ppxss 1128 3 0 3 2 2 0 1 0 8 0
pffrag 232 5 0 5 2 1 1 1 0 482 1
pffrnode 88 5 0 5 2 1 1 1 0 8 1
pffrent 40 55 0 55 2 1 1 1 0 8 1
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 9 0 8 2 1 1 1 0 8 0
pfstitem 24 26 0 13 1 0 1 1 0 8 0
pfstkey 112 26 0 13 1 0 1 1 0 8 0
pfstate 328 26 0 13 3 0 3 3 0 8 0
pfrule 1360 34 0 21 3 1 2 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 408 0 223 15 3 12 15 0 8 0
art_table 32 409 0 223 2 0 2 2 0 8 0
art_node 16 84 0 44 1 0 1 1 0 8 0
sysvmsgpl 40 77 0 37 1 0 1 1 0 8 0
semupl 112 1 0 1 1 1 0 1 0 8 0
semapl 112 71 0 61 1 0 1 1 0 8 0
shmpl 112 18 0 2 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 2191 0 788 89 0 89 89 0 8 0
ffsino 272 2191 0 788 94 0 94 94 0 8 0
nchpl 144 3318 0 1725 60 0 60 60 0 8 0
uvmvnodes 72 2645 0 0 49 0 49 49 0 8 0
vnodes 208 2645 0 0 140 0 140 140 0 8 0
namei 1024 9466 0 9466 1 0 1 1 0 8 1
percpumem 16 52 0 20 1 0 1 1 0 8 0
vcpupl 1984 5 0 0 1 0 1 1 0 8 0
vmpool 560 11 0 6 2 1 1 1 0 8 0
pfiaddrpl 120 2 0 2 1 1 0 1 0 8 0
scsiplug 64 2 0 2 1 1 0 1 0 8 0
scxspl 192 10192 0 10192 14 10 4 7 0 8 4
plimitpl 152 59 0 51 1 0 1 1 0 8 0
sigapl 424 801 0 747 7 0 7 7 0 8 0
futexpl 56 8877 0 8877 1 0 1 1 0 8 1
knotepl 112 96 0 77 1 0 1 1 0 8 0
kqueuepl 144 78 0 74 1 0 1 1 0 8 0
pipelkpl 48 139 0 129 1 0 1 1 0 8 0
pipepl 120 278 0 259 1 0 1 1 0 8 0
fdescpl 496 764 0 747 3 0 3 3 0 8 0
filepl 152 4843 0 4743 5 0 5 5 0 8 1
lockfpl 104 151 0 150 1 0 1 1 0 8 0
lockfspl 48 50 0 49 1 0 1 1 0 8 0
sessionpl 112 20 0 9 1 0 1 1 0 8 0
pgrppl 48 22 0 11 1 0 1 1 0 8 0
ucredpl 96 531 0 522 1 0 1 1 0 8 0
zombiepl 144 747 0 747 1 0 1 1 0 8 1
processpl 984 801 0 747 7 0 7 7 0 8 0
procpl 624 2042 0 1978 6 0 6 6 0 8 0
sosppl 128 8 0 8 3 2 1 1 0 8 1
sockpl 400 1076 0 1057 7 3 4 4 0 8 2
mcl64k 65536 6 0 0 1 0 1 1 0 8 0
mcl16k 16384 1 0 0 1 0 1 1 0 8 0
mcl12k 12288 10 0 0 1 0 1 1 0 8 0
mcl9k 9216 2 0 0 1 0 1 1 0 8 0
mcl8k 8192 5 0 0 1 0 1 1 0 8 0
mcl4k 4096 7 0 0 1 0 1 1 0 8 0
mcl2k2 2112 2 0 0 1 0 1 1 0 8 0
mcl2k 2048 206 0 0 25 0 25 25 0 8 0
mtagpl 80 133 0 0 3 0 3 3 0 8 0
mbufpl 256 526 0 0 32 0 32 32 0 8 0
bufpl 280 4853 0 135 337 0 337 337 0 8 0
anonpl 16 84728 0 68535 82 15 67 81 0 124 1
amapchunkpl 152 4592 0 4446 15 5 10 11 0 158 3
amappl16 192 3741 0 2870 56 11 45 55 0 8 1
amappl15 184 2 0 1 1 0 1 1 0 8 0
amappl14 176 23 0 19 1 0 1 1 0 8 0
amappl13 168 44 0 40 1 0 1 1 0 8 0
amappl12 160 9 0 8 1 0 1 1 0 8 0
amappl11 152 57 0 41 1 0 1 1 0 8 0
amappl10 144 404 0 394 1 0 1 1 0 8 0
amappl9 136 384 0 382 1 0 1 1 0 8 0
amappl8 128 402 0 356 2 0 2 2 0 8 0
amappl7 120 401 0 385 1 0 1 1 0 8 0
amappl6 112 29 0 22 1 0 1 1 0 8 0
amappl5 104 670 0 652 1 0 1 1 0 8 0
amappl4 96 521 0 487 1 0 1 1 0 8 0
amappl3 88 125 0 119 1 0 1 1 0 8 0
amappl2 80 5048 0 4972 2 0 2 2 0 8 0
amappl1 72 26836 0 26385 23 13 10 18 0 8 0
amappl 80 2310 0 2263 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 19 0 2 1 0 1 1 0 8 0
uaddrrnd 24 775 0 753 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 775 0 753 1 0 1 1 0 8 0
vmmpekpl 168 9513 0 9466 3 0 3 3 0 8 0
vmmpepl 168 100138 0 98001 140 36 104 122 0 357 11
vmsppl 368 774 0 753 2 0 2 2 0 8 0
pdppl 4096 1557 0 1511 6 0 6 6 0 8 0
pvpl 32 269172 0 249655 193 22 171 193 0 265 13
pmappl 232 774 0 753 4 2 2 2 0 8 0
extentpl 40 53 0 36 1 0 1 1 0 8 0
phpool 112 291 0 9 9 0 9 9 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff823e87fe) at panic+0x15c sys/kern/subr_prf.c:207
pool_cache_get(ffffffff828c78a0) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline]
pool_cache_get(ffffffff828c78a0) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884
pool_get(ffffffff828c78a0,2) at pool_get+0x91 sys/kern/subr_pool.c:572
m_copym(fffffd8064aa0000,2c00,3a4,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline]
m_copym(fffffd8064aa0000,2c00,3a4,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667
tcp_output(ffff800000ad7100) at tcp_output+0x15ba sys/netinet/tcp_output.c:673
tcp_input(ffff800020db90b8,ffff800020db90c4,6,2) at tcp_input+0x2356
ip_deliver(ffff800020db90b8,ffff800020db90c4,6,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668
ip_ours(ffff800020db90b8,ffff800020db90c4,ffff800020d98750,0) at ip_ours+0x412
ip_input_if(ffff800020db90b8,ffff800020db90c4,4,0,ffff80000017b2a8) at ip_input_if+0x6ce
ipv4_input(ffff80000017b2a8,fffffd80689f0f00) at ipv4_input+0x48 sys/netinet/ip_input.c:215
ether_input(ffff80000017b2a8,fffffd80689f0f00,0) at ether_input+0x345 sys/net/if_ethersubr.c:461
if_input_process(ffff80000017b2a8,ffff800020db91e8) at if_input_process+0x10b if_ih_input sys/net/if.c:908 [inline]
if_input_process(ffff80000017b2a8,ffff800020db91e8) at if_input_process+0x10b sys/net/if.c:942
ifiq_process(ffff80000017b6a0) at ifiq_process+0x80 sys/net/ifq.c:646
taskq_thread(ffff80000002c000) at taskq_thread+0xec sys/kern/kern_task.c:437
end trace frame: 0x0, count: -15
ddb{0}> machine ddbcpu 1
---
This bug is generated by a bot. It may contain errors.
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Anton Lindqvist
Jun 21, 2020, 2:20:17 PM6/21/20
to syzbot, syzkaller-o...@googlegroups.com
#syz dup: pool: cpu free list modified: mbufpl
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