panic: pool_do_get: shmpl free list modified: page 0xfffffd8066c2d000; item addr 0xfffffd8066c2dc40; offset 0x40=0x692cbd14 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *411028 4943 32767 0x10 0x4000000 0K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8339f2cb) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff83957530,1,ffff80003c46daf8) at pool_do_get+0x5df pool_get(ffffffff83957530,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff8000ffff3a08,ffff80003c46dd50,0,ffff80003c46dca0) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff8000ffff3a08,ffff80003c46dd50,ffff80003c46dca0) at sys_shmget+0x195 sys/kern/sysv_shm.c:482 syscall(ffff80003c46dd50) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c46dd50) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa6f8081aa00, 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 0xfffffd8066c2d000; item addr 0xfffffd8066c2dc40; offset 0x40=0x692cbd14 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8339f2cb) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff83957530,1,ffff80003c46daf8) at pool_do_get+0x5df pool_get(ffffffff83957530,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff8000ffff3a08,ffff80003c46dd50,0,ffff80003c46dca0) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff8000ffff3a08,ffff80003c46dd50,ffff80003c46dca0) at sys_shmget+0x195 sys/kern/sysv_shm.c:482 syscall(ffff80003c46dd50) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c46dd50) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa6f8081aa00, count: -8 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c46d920 rbx 0xffffffff8382ee07 cpu_info_full_primary+0x2e07 rdx 0 rcx 0xffff8000ffff3a08 rax 0xffffffff8382dff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x6dec2dbb12b45782 r11 0x7f582acd5430f868 r12 0xffffffff8382ec08 cpu_info_full_primary+0x2c08 r13 0 r14 0 r15 0x1 rip 0xffffffff82740185 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c46d910 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=411028 pid=4943 tcnt=3 stat=onproc flags process=10 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff3770,0xffffffff83949440 process=0xffff80003c0209c0 user=0xffff80003c468000, vmspace=0xfffffd806c822218 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 4943 388255 52292 32767 2 0x10 syz-executor 4943 17418 52292 32767 3 0x4000010 biowait syz-executor * 4943 411028 52292 32767 7 0x4000010 syz-executor 59661 52946 74022 32767 2 0x10 syz-executor 43303 498934 24478 32767 2 0x10 syz-executor 43303 222395 24478 32767 3 0x4000090 fsleep syz-executor 60507 135176 58824 32767 2 0x10 syz-executor 60507 89350 58824 32767 3 0x4000090 sbwait syz-executor 60507 480655 58824 32767 3 0x4000090 ttyin syz-executor 74927 379994 57313 32767 2 0x10 syz-executor 74927 351166 57313 32767 3 0x4000090 fsleep syz-executor 74160 437709 14809 32767 2 0x10 syz-executor 74160 329507 14809 32767 3 0x4000090 sbwait syz-executor 74160 135909 14809 32767 3 0x4000090 fsleep syz-executor 49065 389552 89870 32767 3 0x90 nanoslp syz-executor 49065 247650 89870 32767 3 0x4000090 ttyout syz-executor 49065 230103 89870 32767 3 0x4000090 fsleep syz-executor 93010 126536 96683 32767 2 0x10 syz-executor 93010 73387 96683 32767 3 0x4000090 ttyin syz-executor 93010 181825 96683 32767 3 0x4000090 fsleep syz-executor 96683 225470 9489 32767 2 0x10 syz-executor 24478 375370 60707 32767 3 0x90 nanoslp syz-executor 14809 324050 98730 32767 2 0x10 syz-executor 58824 155178 26845 32767 3 0x90 nanoslp syz-executor 52292 448858 79496 32767 3 0x90 nanoslp syz-executor 57313 415996 85584 32767 2 0x10 syz-executor 89870 32888 22751 32767 3 0x90 nanoslp syz-executor 74022 133422 34912 32767 3 0x90 nanoslp syz-executor 60707 168308 26531 0 3 0x82 wait syz-executor 26845 28767 26531 0 3 0x82 wait syz-executor 34912 123519 26531 0 3 0x82 wait syz-executor 98730 3680 26531 0 3 0x82 wait syz-executor 22751 106127 26531 0 3 0x82 wait syz-executor 85584 125495 26531 0 3 0x82 wait syz-executor 9489 388891 26531 0 3 0x82 wait syz-executor 79496 370152 26531 0 3 0x82 wait syz-executor 26531 294319 89653 0 3 0x82 kqread syz-executor 89653 347215 80111 0 3 0x10008a sigsusp ksh 80111 405977 57922 0 3 0x98 kqread sshd-session 57922 182295 33599 0 3 0x92 kqread sshd-session 30682 359371 1 0 3 0x100083 ttyin getty 33599 510155 1 0 3 0x88 kqread sshd 69419 48273 97574 73 3 0x1100090 kqread syslogd 97574 477233 1 0 3 0x100082 sbwait syslogd 61753 508507 1 0 3 0x100080 kqread resolvd 84788 99519 18182 77 3 0x100092 kqread dhcpleased 85792 174307 18182 77 3 0x100092 kqread dhcpleased 18182 348952 1 0 3 0x80 kqread dhcpleased 16052 433734 0 0 3 0x14200 bored smr 28663 249192 0 0 2 0x14200 zerothread 45008 6039 0 0 3 0x14200 aiodoned aiodoned 37457 306837 0 0 3 0x14200 syncer update 3916 18428 0 0 3 0x14200 cleaner cleaner 52582 508260 0 0 3 0x14200 reaper reaper 58645 230086 0 0 3 0x14200 pgdaemon pagedaemon 98713 139069 0 0 3 0x14200 bored viomb 43002 319669 0 0 3 0x40014200 acpi0 acpi0 86146 475550 0 0 3 0x40014200 idle1 83552 278687 0 0 3 0x14200 bored softnet1 51066 131554 0 0 3 0x14200 bored softnet0 8911 102315 0 0 3 0x14200 bored systqmp 19754 134045 0 0 3 0x14200 bored systq 86083 334602 0 0 3 0x14200 tmoslp softclockmp 92776 189806 0 0 3 0x40014200 tmoslp softclock 6970 112780 0 0 3 0x40014200 idle0 1 93049 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex shmpl r = 0 (0xffffffff83957548) #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:775 #7 Xsyscall+0x128 CPU 1: exclusive mutex &uvm.fpageqlock r = 0 (0xffffffff83910398) #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 uvm_pmr_freepages+0x1a8 sys/uvm/uvm_pmemrange.c:-1 #4 uvm_anfree_list+0x1e5 sys/uvm/uvm_anon.c:129 #5 amap_wipeout+0x248 sys/uvm/uvm_amap.c:-1 #6 uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 #7 uvm_map_teardown+0x360 sys/uvm/uvm_map.c:2525 #8 exit1+0x6fc sys/kern/kern_exit.c:260 #9 sys_exit+0x1a sys/kern/kern_exit.c:-1 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 #11 Xsyscall+0x128 Process 4943 (syz-executor) thread 0xffff8000ffff3770 (17418) exclusive rrwlock inode r = 0 (0xfffffd806caa78f0) #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 sys_truncate+0xce sys/kern/vfs_syscalls.c:2888 #6 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 #7 Xsyscall+0x128 Process 4943 (syz-executor) thread 0xffff8000ffff3a08 (411028) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839c4328) #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:775 #2 Xsyscall+0x128 exclusive mutex shmpl r = 0 (0xffffffff83957548) #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:775 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11077 12022K 12034K 166960K 12170 0 pcb 17 14K 16K 166960K 19 0 rtable 243 6K 7K 166960K 357 0 pf 31 16K 16K 166960K 31 0 ifaddr 42 7K 7K 166960K 44 0 ifgroup 50 2K 2K 166960K 50 0 sysctl 1 1K 9K 166960K 5 0 counters 70 37K 37K 166960K 70 0 ioctlops 0 0K 2K 166960K 29 0 iov 2 16K 24K 166960K 10 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1335 84K 84K 166960K 1361 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 4 0 VM map 2 1K 1K 166960K 2 0 sem 9 0K 0K 166960K 9 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 26 97K 113K 166960K 228 0 sigio 0 0K 0K 166960K 3 0 proc 58 99K 131K 166960K 486 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 20 0 in_multi 99 7K 7K 166960K 102 0 ether_multi 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 223 996K 996K 166960K 223 0 exec 0 0K 1K 166960K 366 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 270 174K 183K 166960K 3673 0 UVM aobj 6 2K 3K 166960K 7 0 pinsyscall 47 94K 106K 166960K 1279 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 9 0 NDP 11 0K 2K 166960K 27 0 temp 35 8662K 8727K 166960K 4185 0 kqueue 13 20K 22K 166960K 32 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 41 0 38 1 0 1 1 0 8 0 rtentry 176 114 0 1 6 0 6 6 0 8 0 unpcb 144 152 0 133 4 0 4 4 0 8 1 syncache 336 5 0 5 1 0 1 1 0 8 1 tcpcb 736 107 0 100 7 0 7 7 0 8 6 arp 136 18 0 0 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 2 0 1 1 0 1 1 0 8 0 inpcb 328 463 0 453 18 9 9 18 0 8 8 nd6 152 27 0 0 2 0 2 2 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 474 0 0 30 0 30 30 0 8 0 art_table 40 475 0 0 5 0 5 5 0 8 0 art_node 32 114 0 11 1 0 1 1 0 8 0 semapl 112 7 0 0 1 0 1 1 0 8 0 shmpl 112 4 0 1 1 0 1 1 0 8 0 pool(0xffffffff83957530:shmpl): page inconsistency: page 0xfffffd8066c2d000; 31 on list, 3 missing, 35 items per page dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 1684 0 175 95 0 95 95 0 8 0 ffsino 296 1684 0 175 117 0 117 117 0 8 0 nchpl 144 2001 0 309 63 0 63 63 0 8 0 vnodes 216 1765 0 0 99 0 99 99 0 8 0 namei 1024 5982 0 5982 1 0 1 1 0 8 1 percpumem 16 50 0 0 1 0 1 1 0 8 0 kstatmem 264 24 0 0 2 0 2 2 0 8 0 scxspl 216 6797 0 6796 3 1 2 2 1 8 1 plimitpl 152 55 0 28 2 0 2 2 0 8 0 sigapl 424 511 0 456 7 0 7 7 0 8 0 knotepl 120 260 0 0 8 0 8 8 0 8 0 kqueuepl 224 39 0 30 1 0 1 1 0 8 0 pipepl 344 120 0 93 3 0 3 3 0 8 0 fdescpl 528 495 0 457 3 0 3 3 0 8 0 filepl 160 2352 0 2129 18 0 18 18 0 8 7 lockfpl 104 39 0 37 1 0 1 1 0 8 0 lockfspl 48 15 0 13 1 0 1 1 0 8 0 sessionpl 144 23 0 6 1 0 1 1 0 8 0 pgrppl 48 35 0 10 1 0 1 1 0 8 0 ucredpl 104 321 0 302 1 0 1 1 0 8 0 zombiepl 144 457 0 456 1 0 1 1 0 8 0 processpl 1232 511 0 456 5 0 5 5 0 8 0 procpl 664 646 0 579 6 0 6 6 0 8 0 sosppl 176 3 0 3 1 0 1 1 0 8 1 sockpl 752 659 0 627 23 7 16 23 0 8 12 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 125 0 0 16 0 16 16 0 8 0 mcl2k 2048 28 0 0 4 0 4 4 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 253 0 0 17 1 16 16 0 8 0 bufpl 280 2575 0 120 176 0 176 176 0 8 0 anonpl 32 5378 0 0 44 0 44 44 0 246 0 amapchunkpl 152 10901 0 10230 29 0 29 29 0 158 2 amappl16 200 1896 0 1858 5 0 5 5 0 8 2 amappl15 192 7 0 7 1 0 1 1 0 8 1 amappl14 184 2 0 2 1 1 0 1 0 8 0 amappl13 176 393 0 392 1 0 1 1 0 8 0 amappl12 168 873 0 825 3 0 3 3 0 8 0 amappl11 160 5 0 5 1 0 1 1 0 8 1 amappl10 152 42 0 32 1 0 1 1 0 8 0 amappl9 144 274 0 274 1 0 1 1 0 8 1 amappl8 136 46 0 45 1 0 1 1 0 8 0 amappl7 128 77 0 76 1 0 1 1 0 8 0 amappl6 120 296 0 285 1 0 1 1 0 8 0 amappl5 112 78 0 71 1 0 1 1 0 8 0 amappl4 104 391 0 367 1 0 1 1 0 8 0 amappl3 96 1737 0 1632 3 0 3 3 0 8 0 amappl2 88 625 0 547 2 0 2 2 0 8 0 amappl1 80 9511 0 8943 14 0 14 14 0 8 0 amappl 88 2981 0 2784 5 0 5 5 0 92 0 uvmvnodes 80 101 0 0 3 0 3 3 0 8 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 6 0 1 1 0 1 1 0 8 0 uaddrrnd 24 495 0 457 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 495 0 457 1 0 1 1 0 8 0 vmmpekpl 168 5796 0 5765 2 0 2 2 0 8 0 vmmpepl 168 39681 0 37564 98 0 98 98 0 357 0 vmsppl 488 494 0 456 7 1 6 6 0 8 0 rwobjpl 80 14192 0 13223 22 0 22 22 0 8 0 pdppl 4096 998 0 912 102 16 86 92 0 8 0 pvpl 32 13613 0 0 111 1 110 111 0 265 0 pmappl 256 494 0 456 4 1 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 286 0 20 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(ffffffff8339f2cb) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff83957530,1,ffff80003c46daf8) at pool_do_get+0x5df pool_get(ffffffff83957530,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff8000ffff3a08,ffff80003c46dd50,0,ffff80003c46dca0) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff8000ffff3a08,ffff80003c46dd50,ffff80003c46dca0) at sys_shmget+0x195 sys/kern/sysv_shm.c:482 syscall(ffff80003c46dd50) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c46dd50) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa6f8081aa00, 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(ffffffff839c4120) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839c4120) at __mp_lock+0x192 sys/kern/kern_lock.c:165 exit1(ffff8000fffeafb0,ff,0,1) at exit1+0x701 sys/kern/kern_exit.c:260 sys_exit(ffff8000fffeafb0,ffff80003c467000,ffff80003c466f50) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c467000) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c467000) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6f8421c00200, count: 7 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(ffffffff839c4120) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839c4120) at __mp_lock+0x192 sys/kern/kern_lock.c:165 exit1(ffff8000fffeafb0,ff,0,1) at exit1+0x701 sys/kern/kern_exit.c:260 sys_exit(ffff8000fffeafb0,ffff80003c467000,ffff80003c466f50) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c467000) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c467000) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6f8421c00200, count: -8