panic: pool_do_get: shmpl free list modified: page 0xfffffd805e130000; item addr 0xfffffd805e1309a8; offset 0x0=0x0 != 0x570c1e2c6c75146f Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 141261 17511 0 0 0 1 syz-executor *243322 20230 0 0 0x4000000 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833af1da) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff839b6048,1,ffff8000333e26c8) at pool_do_get+0x597 sys/kern/subr_pool.c:743 pool_get(ffffffff839b6048,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff8000fffe8fb0,ffff8000333e2920,172,ffff8000333e2870) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff8000fffe8fb0,ffff8000333e2920,ffff8000333e2870) at sys_shmget+0x195 sys/kern/sysv_shm.c:482 syscall(ffff8000333e2920) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000333e2920) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5c15dc68560, count: 7 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 *cpu0: pool_do_get: shmpl free list modified: page 0xfffffd805e130000; item addr 0xfffffd805e1309a8; offset 0x0=0x0 != 0x570c1e2c6c75146f ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833af1da) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff839b6048,1,ffff8000333e26c8) at pool_do_get+0x597 sys/kern/subr_pool.c:743 pool_get(ffffffff839b6048,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff8000fffe8fb0,ffff8000333e2920,172,ffff8000333e2870) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff8000fffe8fb0,ffff8000333e2920,ffff8000333e2870) at sys_shmget+0x195 sys/kern/sysv_shm.c:482 syscall(ffff8000333e2920) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000333e2920) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5c15dc68560, count: -8 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff8000333e24f0 rbx 0xffffffff83822ddf cpu_info_full_primary+0x2ddf rdx 0xffff800001472540 rcx 0xffff8000fffe8fb0 rax 0xffffffff83821ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xbc3bcf705409486a r11 0x785a323bcc30d03b r12 0xffffffff83822be0 cpu_info_full_primary+0x2be0 r13 0 r14 0 r15 0x1 rip 0xffffffff8271f805 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff8000333e24e0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=243322 pid=20230 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000fffe87e8,0xffff8000fffe8030 process=0xffff8000fffece88 user=0xffff8000333dd000, vmspace=0xfffffd805bdd9210 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 17511 141261 60543 0 7 0 syz-executor 20230 10189 11267 0 2 0 syz-executor *20230 243322 11267 0 7 0x4000000 syz-executor 8331 386705 22796 0 3 0x80 nanoslp syz-executor 8331 327863 22796 0 3 0x4000080 kqsel syz-executor 8331 57325 22796 0 3 0x4000080 fsleep syz-executor 88353 336926 62727 0 3 0x80 nanoslp syz-executor 88353 356814 62727 0 3 0x4000080 ttyout syz-executor 88353 83243 62727 0 3 0x4000080 fsleep syz-executor 88353 348634 62727 0 3 0x4000080 fsleep syz-executor 60543 247688 85267 0 3 0x82 nanoslp syz-executor 6402 261148 0 0 3 0x14200 acct acct 74143 281290 0 0 3 0x14200 bored sosplice 70308 391014 85267 0 3 0x2 biowait syz-executor 62727 379264 85267 0 3 0x82 nanoslp syz-executor 22796 360592 85267 0 3 0x82 nanoslp syz-executor 11267 366193 85267 0 3 0x82 nanoslp syz-executor 958 498363 85267 0 3 0x82 nanoslp syz-executor 16365 414809 85267 0 3 0x82 nanoslp syz-executor 48910 87822 85267 0 3 0x82 nanoslp syz-executor 85267 132126 40613 0 3 0x82 kqread syz-executor 40613 516897 71288 0 3 0x10008a sigsusp ksh 71288 118782 58230 0 3 0x98 kqread sshd-session 58230 456160 46456 0 3 0x92 kqread sshd-session 90036 317364 1 0 3 0x100083 ttyin getty 46456 439504 1 0 3 0x88 kqread sshd 62334 454733 41694 74 3 0x1100092 bpf pflogd 41694 463877 1 0 3 0x80 sbwait pflogd 7863 146348 10772 73 3 0x1100090 kqread syslogd 10772 477061 1 0 3 0x100082 sbwait syslogd 46121 180276 1 0 3 0x100080 kqread resolvd 17594 478946 56351 77 3 0x100092 kqread dhcpleased 38624 505686 56351 77 3 0x100092 kqread dhcpleased 56351 261168 1 0 3 0x80 kqread dhcpleased 19587 141355 0 0 3 0x14200 bored smr 20014 135210 0 0 3 0x14200 pgzero zerothread 5786 405868 0 0 3 0x14200 aiodoned aiodoned 6159 76906 0 0 3 0x14200 syncer update 4489 340372 0 0 3 0x14200 cleaner cleaner 98365 207076 0 0 3 0x14200 reaper reaper 86981 495118 0 0 3 0x14200 pgdaemon pagedaemon 20438 469674 0 0 3 0x14200 bored viomb 716 188875 0 0 3 0x40014200 acpi0 acpi0 68569 305174 0 0 3 0x40014200 idle1 98587 436682 0 0 3 0x14200 bored softnet1 30167 457651 0 0 3 0x14200 bored softnet0 15216 413660 0 0 3 0x14200 bored systqmp 3135 496216 0 0 3 0x14200 bored systq 94981 149770 0 0 3 0x14200 tmoslp softclockmp 87571 225962 0 0 3 0x40014200 tmoslp softclock 56031 358658 0 0 3 0x40014200 idle0 1 432655 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex shmpl r = 0 (0xffffffff839b6060) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 pool_get+0x124 sys/kern/subr_pool.c:581 #4 shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 #5 sys_shmget+0x195 sys/kern/sysv_shm.c:482 #6 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #7 Xsyscall+0x128 Process 20230 (syz-executor) thread 0xffff8000fffe8fb0 (243322) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8390bf70) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] #1 syscall+0xaf4 sys/arch/amd64/amd64/trap.c:746 #2 Xsyscall+0x128 exclusive mutex shmpl r = 0 (0xffffffff839b6060) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 pool_get+0x124 sys/kern/subr_pool.c:581 #4 shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 #5 sys_shmget+0x195 sys/kern/sysv_shm.c:482 #6 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #7 Xsyscall+0x128 Process 70308 (syz-executor) thread 0xffff80002a270a78 (391014) exclusive rrwlock inode r = 0 (0xfffffd806a81bd98) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232 #6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3113 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806bf48a18) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3098 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10207 11153K 12265K 166960K 12750 0 pcb 18 13K 14K 166960K 136 0 rtable 205 8K 11K 166960K 361 0 pf 33 17K 21K 166960K 99 0 ifaddr 39 6K 8K 166960K 70 0 ifgroup 51 2K 2K 166960K 104 0 sysctl 3 1K 9K 166960K 10 0 counters 66 36K 37K 166960K 122 0 ioctlops 0 0K 4K 166960K 1554 0 iov 0 0K 16K 166960K 28 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1452 91K 92K 166960K 2127 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 10 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 66 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 639 0 sigio 0 0K 0K 166960K 5 0 proc 72 115K 164K 166960K 617 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 54 0 in_multi 88 6K 7K 166960K 140 0 ether_multi 1 0K 0K 166960K 5 0 mrt 0 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 97 440K 440K 166960K 97 0 exec 0 0K 1K 166960K 557 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 251 161K 178K 166960K 7395 0 UVM aobj 45 37K 37K 166960K 46 0 pinsyscall 42 84K 104K 166960K 1754 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 30 0 NDP 11 0K 2K 166960K 46 0 temp 47 8643K 8715K 166960K 29920 0 kqueue 13 20K 26K 166960K 116 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 70 0 65 1 0 1 1 0 8 0 rtentry 176 118 0 31 5 0 5 5 0 8 0 unpcb 144 284 0 261 2 1 1 2 0 8 0 syncache 336 6 0 6 3 2 1 1 0 8 1 tcpcb 736 190 0 186 4 3 1 4 0 8 0 arp 136 13 0 4 1 0 1 1 0 8 0 inpcb 328 666 0 656 9 5 4 7 0 8 3 nd6 144 21 0 6 1 0 1 1 0 8 0 pkpcb 40 4 0 4 2 1 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1192 20 0 20 2 1 1 1 0 8 1 pppxif 1504 3 0 3 2 2 0 1 0 8 0 pffrag 232 5 0 0 1 0 1 1 0 482 0 pffrnode 88 5 0 0 1 0 1 1 0 8 0 pffrent 40 5 0 0 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 9 0 9 2 2 0 1 0 8 0 pfanchor 1288 3 0 1 1 0 1 1 0 8 0 pftag 88 1 0 1 1 1 0 1 0 8 0 pfstitem 24 48 0 1 1 0 1 1 0 8 0 pfstkey 128 48 0 1 2 0 2 2 0 8 0 pfstate 384 47 0 1 5 0 5 5 0 8 0 pfrule 1344 24 0 18 2 0 2 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 510 0 108 29 1 28 29 0 8 1 art_table 40 512 0 108 5 0 5 5 0 8 0 art_node 32 117 0 39 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 0 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 60 0 50 1 0 1 1 0 8 0 shmpl 112 43 0 2 2 0 2 2 0 8 0 shmpl: pool(0xffffffff839b6048:shmpl): free list modified: page 0xfffffd805e130000; item ordinal 0; addr 0xfffffd805e1309a8 (p 0xfffffd805e130000); offset 0x0=0x0 shmpl: pool(0xffffffff839b6048:shmpl): page inconsistency: page 0xfffffd805e130000; item ordinal 1; addr 0x882534c1e8fd66ab dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 2593 0 1088 96 0 96 96 0 8 1 ffsino 296 2593 0 1088 118 1 117 118 0 8 0 nchpl 144 3477 0 1784 64 0 64 64 0 8 0 rtmask 32 4 0 4 1 1 0 1 0 8 0 uvmvnodes 80 3173 0 0 65 0 65 65 0 8 0 vnodes 216 3173 0 0 177 0 177 177 0 8 0 namei 1024 12757 0 12756 2 1 1 2 0 8 0 percpumem 16 76 0 28 1 0 1 1 0 8 0 pfiaddrpl 120 2 0 2 1 1 0 1 0 8 0 kstatmem 264 58 0 34 3 1 2 3 0 8 0 scsiplug 72 2 0 2 1 1 0 1 0 8 0 scxspl 216 21400 0 21399 10 9 1 8 1 8 0 plimitpl 152 206 0 188 1 0 1 1 0 8 0 sigapl 424 935 0 886 7 1 6 7 0 8 0 knotepl 120 453 0 0 14 0 14 14 0 8 0 kqueuepl 224 266 0 256 1 0 1 1 0 8 0 pipepl 344 245 0 218 3 0 3 3 0 8 0 fdescpl 528 916 0 885 3 0 3 3 0 8 0 filepl 160 5953 0 5720 22 8 14 17 0 8 3 lockfpl 104 333 0 330 2 1 1 2 0 8 0 lockfspl 48 136 0 133 1 0 1 1 0 8 0 sessionpl 144 26 0 17 1 0 1 1 0 8 0 pgrppl 48 39 0 21 1 0 1 1 0 8 0 ucredpl 104 1035 0 1022 1 0 1 1 0 8 0 zombiepl 144 954 0 951 1 0 1 1 0 8 0 processpl 1232 935 0 886 5 1 4 5 0 8 0 procpl 664 1806 0 1751 7 1 6 7 0 8 0 sosppl 168 6 0 6 2 1 1 1 0 8 1 sockpl 752 1069 0 1031 14 7 7 11 0 8 2 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 122 0 0 16 0 16 16 0 8 0 mcl2k 2048 32 0 0 4 0 4 4 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 274 0 0 18 0 18 18 0 8 0 bufpl 280 8984 0 2841 439 0 439 439 0 8 0 anonpl 32 12544 0 0 103 1 102 102 0 246 0 amapchunkpl 152 30678 0 30036 59 18 41 41 0 158 7 amappl16 200 3069 0 2999 38 20 18 27 0 8 7 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 120 0 108 1 0 1 1 0 8 0 amappl13 176 36 0 36 1 1 0 1 0 8 0 amappl12 168 1577 0 1546 3 1 2 2 0 8 0 amappl11 160 50 0 36 1 0 1 1 0 8 0 amappl10 152 3 0 3 1 1 0 1 0 8 0 amappl9 144 260 0 260 1 1 0 1 0 8 0 amappl8 136 35 0 32 1 0 1 1 0 8 0 amappl7 128 111 0 99 1 0 1 1 0 8 0 amappl6 120 179 0 176 1 0 1 1 0 8 0 amappl5 112 125 0 115 1 0 1 1 0 8 0 amappl4 104 311 0 292 1 0 1 1 0 8 0 amappl3 96 4103 0 4012 4 1 3 3 0 8 0 amappl2 88 1165 0 1088 2 0 2 2 0 8 0 amappl1 80 11003 0 10411 16 2 14 15 0 8 0 amappl 88 6597 0 6419 5 0 5 5 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 45 0 1 1 0 1 1 0 8 0 uaddrrnd 24 916 0 885 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 916 0 885 1 0 1 1 0 8 0 vmmpekpl 168 9424 0 9381 3 0 3 3 0 8 0 vmmpepl 168 63828 0 61814 117 14 103 115 0 357 3 vmsppl 488 915 0 885 6 1 5 5 0 8 0 rwobjpl 80 22671 0 18485 91 3 88 89 0 8 0 pdppl 4096 1840 0 1770 106 34 72 86 0 8 2 pvpl 32 21024 0 0 171 1 170 170 0 265 0 pmappl 256 915 0 885 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 292 0 43 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833af1da) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff839b6048,1,ffff8000333e26c8) at pool_do_get+0x597 sys/kern/subr_pool.c:743 pool_get(ffffffff839b6048,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff8000fffe8fb0,ffff8000333e2920,172,ffff8000333e2870) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff8000fffe8fb0,ffff8000333e2920,ffff8000333e2870) at sys_shmget+0x195 sys/kern/sysv_shm.c:482 syscall(ffff8000333e2920) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000333e2920) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5c15dc68560, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299edff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff8390bd68) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8390bd68) at __mp_lock+0x192 sys/kern/kern_lock.c:165 syscall(ffff8000303dbf80) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff8000303dbf80) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x788a439b2a40, count: 9 ddb{1}> trace x86_ipi_db(ffff8000299edff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff8390bd68) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8390bd68) at __mp_lock+0x192 sys/kern/kern_lock.c:165 syscall(ffff8000303dbf80) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff8000303dbf80) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x788a439b2a40, count: -6