panic(ADDR) at panic+0x164
5 views
Skip to first unread message
syzbot
Jul 30, 2020, 7:17:16 PM7/30/20
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 0a287e03 Improved handling of an unescaped '/' in a bracke..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=120fdba8900000
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=0d2dd5f1bc6cfbe523fb
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+0d2dd5...@syzkaller.appspotmail.com
panic(ffffffff8240a73d) at panic+0x164 sys/kern/subr_prf.c:218
__assert(ffffffff82474f23,ffffffff82480046,a8e,ffffffff8243b111) at __assert+0x2b sys/kern/subr_prf.c:162
uvm_map_teardown(fffffd807efff8a0) at uvm_map_teardown+0x2ce sys/uvm/uvm_map.c:2704
uvmspace_free(fffffd807efff8a0) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3646
uvm_exit(ffff800020ea3380) at uvm_exit+0x29 sys/uvm/uvm_glue.c:297
reaper(ffff800020d89860) at reaper+0x189 sys/kern/kern_exit.c:456
end trace frame: 0x0, count: 8
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_do_get: mbufpl free list modified: page 0xfffffd8069336000; item addr 0xfffffd8069336100; offset 0x0=0x0 != 0x43efc605495e6d49
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff8240a73d) at panic+0x164 sys/kern/subr_prf.c:218
__assert(ffffffff82474f23,ffffffff82480046,a8e,ffffffff8243b111) at __assert+0x2b sys/kern/subr_prf.c:162
uvm_map_teardown(fffffd807efff8a0) at uvm_map_teardown+0x2ce sys/uvm/uvm_map.c:2704
uvmspace_free(fffffd807efff8a0) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3646
uvm_exit(ffff800020ea3380) at uvm_exit+0x29 sys/uvm/uvm_glue.c:297
reaper(ffff800020d89860) at reaper+0x189 sys/kern/kern_exit.c:456
end trace frame: 0x0, count: -7
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff800020dcef60
rbx 0xffff800020dcf010
rdx 0x8b
rcx 0x2
rax 0x1
r8 0xffffffff81cae1ef kprintf+0x16f
r9 0x1
r10 0x2
r11 0x99813fd67476fde2
r12 0x3000000008
r13 0xffff800020dcef70
r14 0x104
r15 0x1
rip 0xffffffff81a0eff8 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800020dcef50
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{1}> show proc
PROC (reaper) pid=307929 stat=onproc
flags process=14000<NOZOMBIE,SYSTEM> proc=200<SYSTEM>
pri=4, usrpri=55, nice=20
forw=0xffffffffffffffff, list=0xffff800020d895f0,0xffff800020d89ae0
process=0xffff800020dbc7c8 user=0xffff800020dca000, vmspace=0xffffffff829223c8
estcpu=5, cpticks=14, pctcpu=0.19
user=0, sys=2, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
5042 385962 98832 0 2 0x80 syz-executor.1
5042 58155 98832 0 7 0x4000000 syz-executor.1
5042 213393 98832 0 3 0x4000080 fsleep syz-executor.1
5042 335152 98832 0 3 0x4000080 fsleep syz-executor.1
55160 262482 0 0 3 0x14200 bored sosplice
98832 447447 25171 0 3 0x82 nanosleep syz-executor.1
95528 118900 25171 0 3 0x82 nanosleep syz-executor.0
25171 314659 41354 0 3 0x82 thrsleep syz-fuzzer
25171 258193 41354 0 3 0x4000082 nanosleep syz-fuzzer
25171 199693 41354 0 3 0x4000082 thrsleep syz-fuzzer
25171 224214 41354 0 3 0x4000082 thrsleep syz-fuzzer
25171 328432 41354 0 3 0x4000082 thrsleep syz-fuzzer
25171 350044 41354 0 3 0x4000082 thrsleep syz-fuzzer
25171 482211 41354 0 3 0x4000082 thrsleep syz-fuzzer
25171 170622 41354 0 3 0x4000082 kqread syz-fuzzer
41354 353711 63071 0 3 0x10008a pause ksh
63071 260218 70633 0 3 0x92 select sshd
37999 122131 1 0 3 0x100083 ttyin getty
70633 156566 1 0 3 0x80 select sshd
96115 175793 84701 74 3 0x100092 bpf pflogd
84701 181994 1 0 3 0x80 netio pflogd
5860 460588 77166 73 3 0x100090 kqread syslogd
77166 284371 1 0 3 0x100082 netio syslogd
75423 469823 1 77 3 0x100090 poll dhclient
8281 456715 1 0 3 0x80 poll dhclient
36746 268798 0 0 3 0x14200 bored smr
57831 92084 0 0 2 0x14200 zerothread
617 278240 0 0 3 0x14200 aiodoned aiodoned
54979 36900 0 0 3 0x14200 syncer update
82438 202867 0 0 3 0x14200 cleaner cleaner
*10371 307929 0 0 7 0x14200 reaper
75250 446374 0 0 3 0x14200 pgdaemon pagedaemon
93015 191526 0 0 3 0x14200 bored crynlk
22759 326247 0 0 3 0x14200 bored crypto
21763 71139 0 0 3 0x40014200 acpi0 acpi0
88882 326022 0 0 3 0x40014200 idle1
38315 230759 0 0 2 0x14200 softnet
88327 287326 0 0 3 0x14200 bored systqmp
35061 504273 0 0 3 0x14200 bored systq
96883 352297 0 0 3 0x40014200 bored softclock
27558 58247 0 0 3 0x40014200 idle0
1 264232 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
CPU 0:
exclusive mutex mbufpl r = 0 (0xffffffff82930f20)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 mtx_enter_try+0x102
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 pool_get+0xbf sys/kern/subr_pool.c:578
#4 m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline]
#4 m_copym+0x174 sys/kern/uipc_mbuf.c:667
#5 ether_resolve+0x49f sys/net/if_ethersubr.c:238
#6 ether_output+0x47 ether_encap sys/net/if_ethersubr.c:321 [inline]
#6 ether_output+0x47 sys/net/if_ethersubr.c:350
#7 ip_output+0x12a2 sys/netinet/ip_output.c:509
#8 udp_output+0x5af sys/netinet/udp_usrreq.c:1017
#9 sosend+0x671 sys/kern/uipc_socket.c:555
#10 sendit+0x52b sys/kern/uipc_syscalls.c:657
#11 sys_sendto+0x80 sys/kern/uipc_syscalls.c:522
#12 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#12 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#13 Xsyscall+0x128
CPU 1:
exclusive mutex &uvm.pageqlock r = 0 (0xffffffff8290c390)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 mtx_enter_try+0x102
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 uvm_km_pgremove+0xac sys/uvm/uvm_km.c:262
#4 uvm_unmap_kill_entry+0x1a1 sys/uvm/uvm_map.c:2163
#5 uvm_unmap_remove+0x398 sys/uvm/uvm_map.c:2231
#6 uvm_unmap+0x85 vm_map_unlock_ln sys/uvm/uvm_map.c:5481 [inline]
#6 uvm_unmap+0x85 sys/uvm/uvm_map.c:2041
#7 uvm_uarea_free+0x36 sys/uvm/uvm_glue.c:287
#8 reaper+0x156 sys/kern/kern_exit.c:445
#9 proc_trampoline+0x1c
Process 5042 (syz-executor.1) thread 0xffff800020e03288 (58155)
exclusive rwlock netlock r = 0 (0xffffffff82759528)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 solock+0x5a sys/kern/uipc_socket2.c:282
#2 sosend+0x559 sys/kern/uipc_socket.c:543
#3 sendit+0x52b sys/kern/uipc_syscalls.c:657
#4 sys_sendto+0x80 sys/kern/uipc_syscalls.c:522
#5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#6 Xsyscall+0x128
Process 10371 (reaper) thread 0xffff800020d89860 (307929)
exclusive rwlock kmmaplk r = 0 (0xffffffff827cc300)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 rw_enter+0x453 sys/kern/kern_rwlock.c:311
#2 vm_map_lock_ln+0x111 sys/uvm/uvm_map.c:5445
#3 uvm_unmap+0x6b sys/uvm/uvm_map.c:2040
#4 uvm_uarea_free+0x36 sys/uvm/uvm_glue.c:287
#5 reaper+0x156 sys/kern/kern_exit.c:445
#6 proc_trampoline+0x1c
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828c0930)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 reaper+0x14e sys/kern/kern_exit.c:444
#2 proc_trampoline+0x1c
exclusive mutex &uvm.pageqlock r = 0 (0xffffffff8290c390)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 mtx_enter_try+0x102
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 uvm_km_pgremove+0xac sys/uvm/uvm_km.c:262
#4 uvm_unmap_kill_entry+0x1a1 sys/uvm/uvm_map.c:2163
#5 uvm_unmap_remove+0x398 sys/uvm/uvm_map.c:2231
#6 uvm_unmap+0x85 vm_map_unlock_ln sys/uvm/uvm_map.c:5481 [inline]
#6 uvm_unmap+0x85 sys/uvm/uvm_map.c:2041
#7 uvm_uarea_free+0x36 sys/uvm/uvm_glue.c:287
#8 reaper+0x156 sys/kern/kern_exit.c:445
#9 proc_trampoline+0x1c
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9505 6433K 6819K 78643K 10800 0
pcb 13 8K 8K 78643K 55 0
rtable 111 12K 15K 78643K 319 0
ifaddr 63 13K 13K 78643K 97 0
counters 43 33K 34K 78643K 49 0
ioctlops 0 0K 4K 78643K 1517 0
iov 0 0K 16K 78643K 18 0
mount 1 1K 1K 78643K 1 0
vnodes 1219 77K 77K 78643K 1311 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 1K 1K 78643K 34 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1824 197K 290K 78643K 13058 0
file desc 5 13K 25K 78643K 269 0
sigio 0 0K 0K 78643K 4 0
proc 61 63K 95K 78643K 513 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 40 0
in_multi 40 2K 2K 78643K 80 0
ether_multi 1 0K 0K 78643K 8 0
mrt 0 0K 0K 78643K 1 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 251 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 172 27K 40K 78643K 1787 0
UVM aobj 14 2K 2K 78643K 14 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 33 0
NDP 10 0K 0K 78643K 21 0
temp 96 3859K 3926K 78643K 4578 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 8 0 2 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtpcb 80 25 0 23 1 0 1 1 0 8 0
rtentry 112 59 0 15 2 0 2 2 0 8 0
unpcb 120 129 0 115 1 0 1 1 0 8 0
syncache 264 8 0 8 2 1 1 1 0 8 1
tcpqe 32 64 0 64 1 1 0 1 0 8 0
tcpcb 544 105 0 65 4 1 3 3 0 8 0
inpcb 296 266 0 257 3 1 2 2 0 8 1
nd6 48 12 0 6 1 0 1 1 0 8 0
pkpcb 40 2 0 0 1 0 1 1 0 8 0
ppxss 1136 1 0 1 1 0 1 1 0 8 1
pffrag 232 6 0 2 2 1 1 1 0 482 0
pffrnode 88 6 0 2 2 1 1 1 0 8 0
pffrent 40 74 0 50 2 1 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 18 0 18 1 1 0 1 0 8 0
pfstitem 24 11 0 2 1 0 1 1 0 8 0
pfstkey 112 11 0 2 1 0 1 1 0 8 0
pfstate 328 11 0 2 1 0 1 1 0 8 0
pfrule 1360 27 0 19 2 1 1 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 240 0 51 13 1 12 13 0 8 0
art_table 32 241 0 51 2 0 2 2 0 8 0
art_node 16 58 0 18 1 0 1 1 0 8 0
sysvmsgpl 40 10 0 5 1 0 1 1 0 8 0
semapl 112 32 0 22 1 0 1 1 0 8 0
shmpl 112 11 0 0 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1722 0 318 89 1 88 89 0 8 0
ffsino 272 1722 0 318 94 0 94 94 0 8 0
nchpl 144 2415 0 816 60 0 60 60 0 8 0
uvmvnodes 72 1829 0 0 34 0 34 34 0 8 0
vnodes 208 1829 0 0 97 0 97 97 0 8 0
namei 1024 6711 0 6711 1 0 1 1 0 8 1
percpumem 16 35 0 3 1 0 1 1 0 8 0
vmpool 560 2 0 2 1 0 1 1 0 8 1
pfiaddrpl 120 6 0 6 1 1 0 1 0 8 0
scsiplug 64 2 0 2 1 0 1 1 0 8 1
scxspl 192 7199 0 7199 8 3 5 7 0 8 5
plimitpl 152 30 0 22 1 0 1 1 0 8 0
sigapl 424 482 0 450 4 0 4 4 0 8 0
futexpl 56 4739 0 4737 1 0 1 1 0 8 0
knotepl 112 74 0 54 1 0 1 1 0 8 0
kqueuepl 144 25 0 22 1 0 1 1 0 8 0
pipepl 304 111 0 100 2 0 2 2 0 8 0
fdescpl 496 466 0 450 3 0 3 3 0 8 0
filepl 152 2597 0 2488 5 0 5 5 0 8 0
lockfpl 104 41 0 40 1 0 1 1 0 8 0
lockfspl 48 16 0 15 1 0 1 1 0 8 0
sessionpl 112 19 0 8 1 0 1 1 0 8 0
pgrppl 48 23 0 12 1 0 1 1 0 8 0
ucredpl 96 195 0 185 1 0 1 1 0 8 0
zombiepl 144 450 0 449 1 0 1 1 0 8 0
processpl 992 482 0 449 5 0 5 5 0 8 0
procpl 624 929 0 886 4 0 4 4 0 8 0
sosppl 128 1 0 1 1 0 1 1 0 8 1
sockpl 400 422 0 395 4 0 4 4 0 8 1
mcl64k 65536 4 0 0 1 0 1 1 0 8 0
mcl16k 16384 1 0 0 1 0 1 1 0 8 0
mcl12k 12288 1 0 0 1 0 1 1 0 8 0
mcl8k 8192 2 0 0 1 0 1 1 0 8 0
mcl4k 4096 5 0 0 1 0 1 1 0 8 0
mcl2k2 2112 1 0 0 1 0 1 1 0 8 0
mcl2k 2048 226 0 0 28 0 28 28 0 8 0
mtagpl 96 12 0 0 1 0 1 1 0 8 0
mbufpl 256 244 0 0 14 0 14 14 0 8 0
mbufpl: pool(0xffffffff82930f10:mbufpl): free list modified: page 0xfffffd8069336000; item ordinal 0; addr 0xfffffd8069336100 (p 0xfffffd8069335000); offset 0x0=0x0
pool(mbufpl): free list modified: page 0xfffffd8069336000; item ordinal 0; addr 0xfffffd8069336100 (p 0xfffffd8069335000); offset 0x0=0x0
mbufpl: pool(0xffffffff82930f10:mbufpl): page inconsistency: page 0xfffffd8069336000; item ordinal 1; addr 0x306be88f61ee3ff
bufpl 280 3972 0 128 275 0 275 275 0 8 0
anonpl 16 66101 0 48433 81 3 78 80 0 124 5
amapchunkpl 152 2425 0 2122 13 1 12 13 0 158 0
amappl16 192 2061 0 1219 54 5 49 54 0 8 6
amappl15 184 18 0 15 1 0 1 1 0 8 0
amappl14 176 3 0 1 1 0 1 1 0 8 0
amappl13 168 147 0 142 1 0 1 1 0 8 0
amappl12 160 136 0 129 1 0 1 1 0 8 0
amappl11 152 62 0 45 1 0 1 1 0 8 0
amappl10 144 17 0 14 1 0 1 1 0 8 0
amappl9 136 472 0 469 1 0 1 1 0 8 0
amappl8 128 484 0 437 2 0 2 2 0 8 0
amappl7 120 123 0 110 1 0 1 1 0 8 0
amappl6 112 32 0 24 1 0 1 1 0 8 0
amappl5 104 364 0 344 1 0 1 1 0 8 0
amappl4 96 501 0 475 1 0 1 1 0 8 0
amappl3 88 120 0 111 1 0 1 1 0 8 0
amappl2 80 2820 0 2744 2 0 2 2 0 8 0
amappl1 72 22434 0 21954 22 12 10 18 0 8 0
amappl 80 1236 0 1150 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 13 0 0 1 0 1 1 0 8 0
uaddrrnd 24 468 0 451 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 468 0 451 1 0 1 1 0 8 0
vmmpekpl 168 7553 0 7515 2 0 2 2 0 8 0
vmmpepl 168 66994 0 64811 126 9 117 124 0 357 22
vmsppl 368 467 0 451 2 0 2 2 0 8 0
pdppl 4096 943 0 902 6 0 6 6 0 8 0
pvpl 32 210096 0 189010 190 2 188 190 0 265 17
pmappl 232 467 0 451 3 1 2 2 0 8 1
extentpl 40 53 0 36 1 0 1 1 0 8 0
phpool 112 271 0 6 8 0 8 8 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffffffff826fbff0) 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
db_enter_ddb() at db_enter_ddb+0x406 sys/arch/amd64/amd64/db_interface.c:306
db_ktrap(1,0,ffff8000222f23d0) at db_ktrap+0x199 sys/arch/amd64/amd64/db_interface.c:137
kerntrap(ffff8000222f23d0) at kerntrap+0x13a sys/arch/amd64/amd64/trap.c:293
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff8249d2cc) at panic+0x164 sys/kern/subr_prf.c:218
pool_do_get(ffffffff82930f10,2,ffff8000222f2648) at pool_do_get+0x439 sys/kern/subr_pool.c:738
pool_get(ffffffff82930f10,2) at pool_get+0xeb sys/kern/subr_pool.c:581
m_copym(fffffd8069334300,0,3b9aca00,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline]
m_copym(fffffd8069334300,0,3b9aca00,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667
ether_resolve(ffff80000017c2a8,fffffd8069334300,fffffd806f65f520,fffffd806f380150,ffff8000222f27e8) at ether_resolve+0x49f sys/net/if_ethersubr.c:238
ether_output(ffff80000017c2a8,fffffd8069334300,fffffd806f65f520,fffffd806f380150) at ether_output+0x47 ether_encap sys/net/if_ethersubr.c:321 [inline]
ether_output(ffff80000017c2a8,fffffd8069334300,fffffd806f65f520,fffffd806f380150) at ether_output+0x47 sys/net/if_ethersubr.c:350
end trace frame: 0xffff8000222f2950, count: 0
ddb{0}> trace
x86_ipi_db(ffffffff826fbff0) 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
db_enter_ddb() at db_enter_ddb+0x406 sys/arch/amd64/amd64/db_interface.c:306
db_ktrap(1,0,ffff8000222f23d0) at db_ktrap+0x199 sys/arch/amd64/amd64/db_interface.c:137
kerntrap(ffff8000222f23d0) at kerntrap+0x13a sys/arch/amd64/amd64/trap.c:293
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff8249d2cc) at panic+0x164 sys/kern/subr_prf.c:218
pool_do_get(ffffffff82930f10,2,ffff8000222f2648) at pool_do_get+0x439 sys/kern/subr_pool.c:738
pool_get(ffffffff82930f10,2) at pool_get+0xeb sys/kern/subr_pool.c:581
m_copym(fffffd8069334300,0,3b9aca00,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline]
m_copym(fffffd8069334300,0,3b9aca00,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667
ether_resolve(ffff80000017c2a8,fffffd8069334300,fffffd806f65f520,fffffd806f380150,ffff8000222f27e8) at ether_resolve+0x49f sys/net/if_ethersubr.c:238
ether_output(ffff80000017c2a8,fffffd8069334300,fffffd806f65f520,fffffd806f380150) at ether_output+0x47 ether_encap sys/net/if_ethersubr.c:321 [inline]
ether_output(ffff80000017c2a8,fffffd8069334300,fffffd806f65f520,fffffd806f380150) at ether_output+0x47 sys/net/if_ethersubr.c:350
ip_output(fffffd806d73ae00,0,fffffd806f65f510,0,0,fffffd806f65f4a0) at ip_output+0x12a2 sys/netinet/ip_output.c:509
udp_output(fffffd806f65f4a0,fffffd806d73ae00,0,0) at udp_output+0x5af sys/netinet/udp_usrreq.c:1017
sosend(fffffd806c873970,0,ffff8000222f2b10,0,0,0) at sosend+0x671 sys/kern/uipc_socket.c:555
sendit(ffff800020e03288,d,ffff8000222f2bf0,0,ffff8000222f2cd0) at sendit+0x52b sys/kern/uipc_syscalls.c:657
sys_sendto(ffff800020e03288,ffff8000222f2c88,ffff8000222f2cd0) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:522
syscall(ffff8000222f2d50) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000222f2d50) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xd2ce887f870, count: -21
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(ffffffff8240a73d) at panic+0x164 sys/kern/subr_prf.c:218
__assert(ffffffff82474f23,ffffffff82480046,a8e,ffffffff8243b111) at __assert+0x2b sys/kern/subr_prf.c:162
uvm_map_teardown(fffffd807efff8a0) at uvm_map_teardown+0x2ce sys/uvm/uvm_map.c:2704
uvmspace_free(fffffd807efff8a0) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3646
uvm_exit(ffff800020ea3380) at uvm_exit+0x29 sys/uvm/uvm_glue.c:297
reaper(ffff800020d89860) at reaper+0x189 sys/kern/kern_exit.c:456
end trace frame: 0x0, count: 8
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff8240a73d) at panic+0x164 sys/kern/subr_prf.c:218
__assert(ffffffff82474f23,ffffffff82480046,a8e,ffffffff8243b111) at __assert+0x2b sys/kern/subr_prf.c:162
uvm_map_teardown(fffffd807efff8a0) at uvm_map_teardown+0x2ce sys/uvm/uvm_map.c:2704
uvmspace_free(fffffd807efff8a0) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3646
uvm_exit(ffff800020ea3380) at uvm_exit+0x29 sys/uvm/uvm_glue.c:297
reaper(ffff800020d89860) at reaper+0x189 sys/kern/kern_exit.c:456
end trace frame: 0x0, count: -7
---
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:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following issue on:
HEAD commit: 0a287e03 Improved handling of an unescaped '/' in a bracke..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=120fdba8900000
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=0d2dd5f1bc6cfbe523fb
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+0d2dd5...@syzkaller.appspotmail.com
panic(ffffffff8240a73d) at panic+0x164 sys/kern/subr_prf.c:218
__assert(ffffffff82474f23,ffffffff82480046,a8e,ffffffff8243b111) at __assert+0x2b sys/kern/subr_prf.c:162
uvm_map_teardown(fffffd807efff8a0) at uvm_map_teardown+0x2ce sys/uvm/uvm_map.c:2704
uvmspace_free(fffffd807efff8a0) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3646
uvm_exit(ffff800020ea3380) at uvm_exit+0x29 sys/uvm/uvm_glue.c:297
reaper(ffff800020d89860) at reaper+0x189 sys/kern/kern_exit.c:456
end trace frame: 0x0, count: 8
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_do_get: mbufpl free list modified: page 0xfffffd8069336000; item addr 0xfffffd8069336100; offset 0x0=0x0 != 0x43efc605495e6d49
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff8240a73d) at panic+0x164 sys/kern/subr_prf.c:218
__assert(ffffffff82474f23,ffffffff82480046,a8e,ffffffff8243b111) at __assert+0x2b sys/kern/subr_prf.c:162
uvm_map_teardown(fffffd807efff8a0) at uvm_map_teardown+0x2ce sys/uvm/uvm_map.c:2704
uvmspace_free(fffffd807efff8a0) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3646
uvm_exit(ffff800020ea3380) at uvm_exit+0x29 sys/uvm/uvm_glue.c:297
reaper(ffff800020d89860) at reaper+0x189 sys/kern/kern_exit.c:456
end trace frame: 0x0, count: -7
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff800020dcef60
rbx 0xffff800020dcf010
rdx 0x8b
rcx 0x2
rax 0x1
r8 0xffffffff81cae1ef kprintf+0x16f
r9 0x1
r10 0x2
r11 0x99813fd67476fde2
r12 0x3000000008
r13 0xffff800020dcef70
r14 0x104
r15 0x1
rip 0xffffffff81a0eff8 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800020dcef50
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{1}> show proc
PROC (reaper) pid=307929 stat=onproc
flags process=14000<NOZOMBIE,SYSTEM> proc=200<SYSTEM>
pri=4, usrpri=55, nice=20
forw=0xffffffffffffffff, list=0xffff800020d895f0,0xffff800020d89ae0
process=0xffff800020dbc7c8 user=0xffff800020dca000, vmspace=0xffffffff829223c8
estcpu=5, cpticks=14, pctcpu=0.19
user=0, sys=2, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
5042 385962 98832 0 2 0x80 syz-executor.1
5042 58155 98832 0 7 0x4000000 syz-executor.1
5042 213393 98832 0 3 0x4000080 fsleep syz-executor.1
5042 335152 98832 0 3 0x4000080 fsleep syz-executor.1
55160 262482 0 0 3 0x14200 bored sosplice
98832 447447 25171 0 3 0x82 nanosleep syz-executor.1
95528 118900 25171 0 3 0x82 nanosleep syz-executor.0
25171 314659 41354 0 3 0x82 thrsleep syz-fuzzer
25171 258193 41354 0 3 0x4000082 nanosleep syz-fuzzer
25171 199693 41354 0 3 0x4000082 thrsleep syz-fuzzer
25171 224214 41354 0 3 0x4000082 thrsleep syz-fuzzer
25171 328432 41354 0 3 0x4000082 thrsleep syz-fuzzer
25171 350044 41354 0 3 0x4000082 thrsleep syz-fuzzer
25171 482211 41354 0 3 0x4000082 thrsleep syz-fuzzer
25171 170622 41354 0 3 0x4000082 kqread syz-fuzzer
41354 353711 63071 0 3 0x10008a pause ksh
63071 260218 70633 0 3 0x92 select sshd
37999 122131 1 0 3 0x100083 ttyin getty
70633 156566 1 0 3 0x80 select sshd
96115 175793 84701 74 3 0x100092 bpf pflogd
84701 181994 1 0 3 0x80 netio pflogd
5860 460588 77166 73 3 0x100090 kqread syslogd
77166 284371 1 0 3 0x100082 netio syslogd
75423 469823 1 77 3 0x100090 poll dhclient
8281 456715 1 0 3 0x80 poll dhclient
36746 268798 0 0 3 0x14200 bored smr
57831 92084 0 0 2 0x14200 zerothread
617 278240 0 0 3 0x14200 aiodoned aiodoned
54979 36900 0 0 3 0x14200 syncer update
82438 202867 0 0 3 0x14200 cleaner cleaner
*10371 307929 0 0 7 0x14200 reaper
75250 446374 0 0 3 0x14200 pgdaemon pagedaemon
93015 191526 0 0 3 0x14200 bored crynlk
22759 326247 0 0 3 0x14200 bored crypto
21763 71139 0 0 3 0x40014200 acpi0 acpi0
88882 326022 0 0 3 0x40014200 idle1
38315 230759 0 0 2 0x14200 softnet
88327 287326 0 0 3 0x14200 bored systqmp
35061 504273 0 0 3 0x14200 bored systq
96883 352297 0 0 3 0x40014200 bored softclock
27558 58247 0 0 3 0x40014200 idle0
1 264232 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
CPU 0:
exclusive mutex mbufpl r = 0 (0xffffffff82930f20)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 mtx_enter_try+0x102
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 pool_get+0xbf sys/kern/subr_pool.c:578
#4 m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline]
#4 m_copym+0x174 sys/kern/uipc_mbuf.c:667
#5 ether_resolve+0x49f sys/net/if_ethersubr.c:238
#6 ether_output+0x47 ether_encap sys/net/if_ethersubr.c:321 [inline]
#6 ether_output+0x47 sys/net/if_ethersubr.c:350
#7 ip_output+0x12a2 sys/netinet/ip_output.c:509
#8 udp_output+0x5af sys/netinet/udp_usrreq.c:1017
#9 sosend+0x671 sys/kern/uipc_socket.c:555
#10 sendit+0x52b sys/kern/uipc_syscalls.c:657
#11 sys_sendto+0x80 sys/kern/uipc_syscalls.c:522
#12 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#12 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#13 Xsyscall+0x128
CPU 1:
exclusive mutex &uvm.pageqlock r = 0 (0xffffffff8290c390)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 mtx_enter_try+0x102
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 uvm_km_pgremove+0xac sys/uvm/uvm_km.c:262
#4 uvm_unmap_kill_entry+0x1a1 sys/uvm/uvm_map.c:2163
#5 uvm_unmap_remove+0x398 sys/uvm/uvm_map.c:2231
#6 uvm_unmap+0x85 vm_map_unlock_ln sys/uvm/uvm_map.c:5481 [inline]
#6 uvm_unmap+0x85 sys/uvm/uvm_map.c:2041
#7 uvm_uarea_free+0x36 sys/uvm/uvm_glue.c:287
#8 reaper+0x156 sys/kern/kern_exit.c:445
#9 proc_trampoline+0x1c
Process 5042 (syz-executor.1) thread 0xffff800020e03288 (58155)
exclusive rwlock netlock r = 0 (0xffffffff82759528)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 solock+0x5a sys/kern/uipc_socket2.c:282
#2 sosend+0x559 sys/kern/uipc_socket.c:543
#3 sendit+0x52b sys/kern/uipc_syscalls.c:657
#4 sys_sendto+0x80 sys/kern/uipc_syscalls.c:522
#5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#6 Xsyscall+0x128
Process 10371 (reaper) thread 0xffff800020d89860 (307929)
exclusive rwlock kmmaplk r = 0 (0xffffffff827cc300)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 rw_enter+0x453 sys/kern/kern_rwlock.c:311
#2 vm_map_lock_ln+0x111 sys/uvm/uvm_map.c:5445
#3 uvm_unmap+0x6b sys/uvm/uvm_map.c:2040
#4 uvm_uarea_free+0x36 sys/uvm/uvm_glue.c:287
#5 reaper+0x156 sys/kern/kern_exit.c:445
#6 proc_trampoline+0x1c
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828c0930)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 reaper+0x14e sys/kern/kern_exit.c:444
#2 proc_trampoline+0x1c
exclusive mutex &uvm.pageqlock r = 0 (0xffffffff8290c390)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 mtx_enter_try+0x102
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 uvm_km_pgremove+0xac sys/uvm/uvm_km.c:262
#4 uvm_unmap_kill_entry+0x1a1 sys/uvm/uvm_map.c:2163
#5 uvm_unmap_remove+0x398 sys/uvm/uvm_map.c:2231
#6 uvm_unmap+0x85 vm_map_unlock_ln sys/uvm/uvm_map.c:5481 [inline]
#6 uvm_unmap+0x85 sys/uvm/uvm_map.c:2041
#7 uvm_uarea_free+0x36 sys/uvm/uvm_glue.c:287
#8 reaper+0x156 sys/kern/kern_exit.c:445
#9 proc_trampoline+0x1c
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9505 6433K 6819K 78643K 10800 0
pcb 13 8K 8K 78643K 55 0
rtable 111 12K 15K 78643K 319 0
ifaddr 63 13K 13K 78643K 97 0
counters 43 33K 34K 78643K 49 0
ioctlops 0 0K 4K 78643K 1517 0
iov 0 0K 16K 78643K 18 0
mount 1 1K 1K 78643K 1 0
vnodes 1219 77K 77K 78643K 1311 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 1K 1K 78643K 34 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1824 197K 290K 78643K 13058 0
file desc 5 13K 25K 78643K 269 0
sigio 0 0K 0K 78643K 4 0
proc 61 63K 95K 78643K 513 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 40 0
in_multi 40 2K 2K 78643K 80 0
ether_multi 1 0K 0K 78643K 8 0
mrt 0 0K 0K 78643K 1 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 251 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 172 27K 40K 78643K 1787 0
UVM aobj 14 2K 2K 78643K 14 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 33 0
NDP 10 0K 0K 78643K 21 0
temp 96 3859K 3926K 78643K 4578 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 8 0 2 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtpcb 80 25 0 23 1 0 1 1 0 8 0
rtentry 112 59 0 15 2 0 2 2 0 8 0
unpcb 120 129 0 115 1 0 1 1 0 8 0
syncache 264 8 0 8 2 1 1 1 0 8 1
tcpqe 32 64 0 64 1 1 0 1 0 8 0
tcpcb 544 105 0 65 4 1 3 3 0 8 0
inpcb 296 266 0 257 3 1 2 2 0 8 1
nd6 48 12 0 6 1 0 1 1 0 8 0
pkpcb 40 2 0 0 1 0 1 1 0 8 0
ppxss 1136 1 0 1 1 0 1 1 0 8 1
pffrag 232 6 0 2 2 1 1 1 0 482 0
pffrnode 88 6 0 2 2 1 1 1 0 8 0
pffrent 40 74 0 50 2 1 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 18 0 18 1 1 0 1 0 8 0
pfstitem 24 11 0 2 1 0 1 1 0 8 0
pfstkey 112 11 0 2 1 0 1 1 0 8 0
pfstate 328 11 0 2 1 0 1 1 0 8 0
pfrule 1360 27 0 19 2 1 1 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 240 0 51 13 1 12 13 0 8 0
art_table 32 241 0 51 2 0 2 2 0 8 0
art_node 16 58 0 18 1 0 1 1 0 8 0
sysvmsgpl 40 10 0 5 1 0 1 1 0 8 0
semapl 112 32 0 22 1 0 1 1 0 8 0
shmpl 112 11 0 0 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1722 0 318 89 1 88 89 0 8 0
ffsino 272 1722 0 318 94 0 94 94 0 8 0
nchpl 144 2415 0 816 60 0 60 60 0 8 0
uvmvnodes 72 1829 0 0 34 0 34 34 0 8 0
vnodes 208 1829 0 0 97 0 97 97 0 8 0
namei 1024 6711 0 6711 1 0 1 1 0 8 1
percpumem 16 35 0 3 1 0 1 1 0 8 0
vmpool 560 2 0 2 1 0 1 1 0 8 1
pfiaddrpl 120 6 0 6 1 1 0 1 0 8 0
scsiplug 64 2 0 2 1 0 1 1 0 8 1
scxspl 192 7199 0 7199 8 3 5 7 0 8 5
plimitpl 152 30 0 22 1 0 1 1 0 8 0
sigapl 424 482 0 450 4 0 4 4 0 8 0
futexpl 56 4739 0 4737 1 0 1 1 0 8 0
knotepl 112 74 0 54 1 0 1 1 0 8 0
kqueuepl 144 25 0 22 1 0 1 1 0 8 0
pipepl 304 111 0 100 2 0 2 2 0 8 0
fdescpl 496 466 0 450 3 0 3 3 0 8 0
filepl 152 2597 0 2488 5 0 5 5 0 8 0
lockfpl 104 41 0 40 1 0 1 1 0 8 0
lockfspl 48 16 0 15 1 0 1 1 0 8 0
sessionpl 112 19 0 8 1 0 1 1 0 8 0
pgrppl 48 23 0 12 1 0 1 1 0 8 0
ucredpl 96 195 0 185 1 0 1 1 0 8 0
zombiepl 144 450 0 449 1 0 1 1 0 8 0
processpl 992 482 0 449 5 0 5 5 0 8 0
procpl 624 929 0 886 4 0 4 4 0 8 0
sosppl 128 1 0 1 1 0 1 1 0 8 1
sockpl 400 422 0 395 4 0 4 4 0 8 1
mcl64k 65536 4 0 0 1 0 1 1 0 8 0
mcl16k 16384 1 0 0 1 0 1 1 0 8 0
mcl12k 12288 1 0 0 1 0 1 1 0 8 0
mcl8k 8192 2 0 0 1 0 1 1 0 8 0
mcl4k 4096 5 0 0 1 0 1 1 0 8 0
mcl2k2 2112 1 0 0 1 0 1 1 0 8 0
mcl2k 2048 226 0 0 28 0 28 28 0 8 0
mtagpl 96 12 0 0 1 0 1 1 0 8 0
mbufpl 256 244 0 0 14 0 14 14 0 8 0
mbufpl: pool(0xffffffff82930f10:mbufpl): free list modified: page 0xfffffd8069336000; item ordinal 0; addr 0xfffffd8069336100 (p 0xfffffd8069335000); offset 0x0=0x0
pool(mbufpl): free list modified: page 0xfffffd8069336000; item ordinal 0; addr 0xfffffd8069336100 (p 0xfffffd8069335000); offset 0x0=0x0
mbufpl: pool(0xffffffff82930f10:mbufpl): page inconsistency: page 0xfffffd8069336000; item ordinal 1; addr 0x306be88f61ee3ff
bufpl 280 3972 0 128 275 0 275 275 0 8 0
anonpl 16 66101 0 48433 81 3 78 80 0 124 5
amapchunkpl 152 2425 0 2122 13 1 12 13 0 158 0
amappl16 192 2061 0 1219 54 5 49 54 0 8 6
amappl15 184 18 0 15 1 0 1 1 0 8 0
amappl14 176 3 0 1 1 0 1 1 0 8 0
amappl13 168 147 0 142 1 0 1 1 0 8 0
amappl12 160 136 0 129 1 0 1 1 0 8 0
amappl11 152 62 0 45 1 0 1 1 0 8 0
amappl10 144 17 0 14 1 0 1 1 0 8 0
amappl9 136 472 0 469 1 0 1 1 0 8 0
amappl8 128 484 0 437 2 0 2 2 0 8 0
amappl7 120 123 0 110 1 0 1 1 0 8 0
amappl6 112 32 0 24 1 0 1 1 0 8 0
amappl5 104 364 0 344 1 0 1 1 0 8 0
amappl4 96 501 0 475 1 0 1 1 0 8 0
amappl3 88 120 0 111 1 0 1 1 0 8 0
amappl2 80 2820 0 2744 2 0 2 2 0 8 0
amappl1 72 22434 0 21954 22 12 10 18 0 8 0
amappl 80 1236 0 1150 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 13 0 0 1 0 1 1 0 8 0
uaddrrnd 24 468 0 451 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 468 0 451 1 0 1 1 0 8 0
vmmpekpl 168 7553 0 7515 2 0 2 2 0 8 0
vmmpepl 168 66994 0 64811 126 9 117 124 0 357 22
vmsppl 368 467 0 451 2 0 2 2 0 8 0
pdppl 4096 943 0 902 6 0 6 6 0 8 0
pvpl 32 210096 0 189010 190 2 188 190 0 265 17
pmappl 232 467 0 451 3 1 2 2 0 8 1
extentpl 40 53 0 36 1 0 1 1 0 8 0
phpool 112 271 0 6 8 0 8 8 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffffffff826fbff0) 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
db_enter_ddb() at db_enter_ddb+0x406 sys/arch/amd64/amd64/db_interface.c:306
db_ktrap(1,0,ffff8000222f23d0) at db_ktrap+0x199 sys/arch/amd64/amd64/db_interface.c:137
kerntrap(ffff8000222f23d0) at kerntrap+0x13a sys/arch/amd64/amd64/trap.c:293
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff8249d2cc) at panic+0x164 sys/kern/subr_prf.c:218
pool_do_get(ffffffff82930f10,2,ffff8000222f2648) at pool_do_get+0x439 sys/kern/subr_pool.c:738
pool_get(ffffffff82930f10,2) at pool_get+0xeb sys/kern/subr_pool.c:581
m_copym(fffffd8069334300,0,3b9aca00,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline]
m_copym(fffffd8069334300,0,3b9aca00,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667
ether_resolve(ffff80000017c2a8,fffffd8069334300,fffffd806f65f520,fffffd806f380150,ffff8000222f27e8) at ether_resolve+0x49f sys/net/if_ethersubr.c:238
ether_output(ffff80000017c2a8,fffffd8069334300,fffffd806f65f520,fffffd806f380150) at ether_output+0x47 ether_encap sys/net/if_ethersubr.c:321 [inline]
ether_output(ffff80000017c2a8,fffffd8069334300,fffffd806f65f520,fffffd806f380150) at ether_output+0x47 sys/net/if_ethersubr.c:350
end trace frame: 0xffff8000222f2950, count: 0
ddb{0}> trace
x86_ipi_db(ffffffff826fbff0) 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
db_enter_ddb() at db_enter_ddb+0x406 sys/arch/amd64/amd64/db_interface.c:306
db_ktrap(1,0,ffff8000222f23d0) at db_ktrap+0x199 sys/arch/amd64/amd64/db_interface.c:137
kerntrap(ffff8000222f23d0) at kerntrap+0x13a sys/arch/amd64/amd64/trap.c:293
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff8249d2cc) at panic+0x164 sys/kern/subr_prf.c:218
pool_do_get(ffffffff82930f10,2,ffff8000222f2648) at pool_do_get+0x439 sys/kern/subr_pool.c:738
pool_get(ffffffff82930f10,2) at pool_get+0xeb sys/kern/subr_pool.c:581
m_copym(fffffd8069334300,0,3b9aca00,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline]
m_copym(fffffd8069334300,0,3b9aca00,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667
ether_resolve(ffff80000017c2a8,fffffd8069334300,fffffd806f65f520,fffffd806f380150,ffff8000222f27e8) at ether_resolve+0x49f sys/net/if_ethersubr.c:238
ether_output(ffff80000017c2a8,fffffd8069334300,fffffd806f65f520,fffffd806f380150) at ether_output+0x47 ether_encap sys/net/if_ethersubr.c:321 [inline]
ether_output(ffff80000017c2a8,fffffd8069334300,fffffd806f65f520,fffffd806f380150) at ether_output+0x47 sys/net/if_ethersubr.c:350
ip_output(fffffd806d73ae00,0,fffffd806f65f510,0,0,fffffd806f65f4a0) at ip_output+0x12a2 sys/netinet/ip_output.c:509
udp_output(fffffd806f65f4a0,fffffd806d73ae00,0,0) at udp_output+0x5af sys/netinet/udp_usrreq.c:1017
sosend(fffffd806c873970,0,ffff8000222f2b10,0,0,0) at sosend+0x671 sys/kern/uipc_socket.c:555
sendit(ffff800020e03288,d,ffff8000222f2bf0,0,ffff8000222f2cd0) at sendit+0x52b sys/kern/uipc_syscalls.c:657
sys_sendto(ffff800020e03288,ffff8000222f2c88,ffff8000222f2cd0) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:522
syscall(ffff8000222f2d50) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000222f2d50) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xd2ce887f870, count: -21
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(ffffffff8240a73d) at panic+0x164 sys/kern/subr_prf.c:218
__assert(ffffffff82474f23,ffffffff82480046,a8e,ffffffff8243b111) at __assert+0x2b sys/kern/subr_prf.c:162
uvm_map_teardown(fffffd807efff8a0) at uvm_map_teardown+0x2ce sys/uvm/uvm_map.c:2704
uvmspace_free(fffffd807efff8a0) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3646
uvm_exit(ffff800020ea3380) at uvm_exit+0x29 sys/uvm/uvm_glue.c:297
reaper(ffff800020d89860) at reaper+0x189 sys/kern/kern_exit.c:456
end trace frame: 0x0, count: 8
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff8240a73d) at panic+0x164 sys/kern/subr_prf.c:218
__assert(ffffffff82474f23,ffffffff82480046,a8e,ffffffff8243b111) at __assert+0x2b sys/kern/subr_prf.c:162
uvm_map_teardown(fffffd807efff8a0) at uvm_map_teardown+0x2ce sys/uvm/uvm_map.c:2704
uvmspace_free(fffffd807efff8a0) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3646
uvm_exit(ffff800020ea3380) at uvm_exit+0x29 sys/uvm/uvm_glue.c:297
reaper(ffff800020d89860) at reaper+0x189 sys/kern/kern_exit.c:456
end trace frame: 0x0, count: -7
---
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:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
Anton Lindqvist
Jul 31, 2020, 2:39:41 AM7/31/20
to syzbot, syzkaller-o...@googlegroups.com
#syz invalid
Reply all
Reply to author
Forward
0 new messages