panic: Caught invalid memory access at ffff8000018ceee0 size 36 op 1 Stopped at db_enter+0x17: popq %rbp TID PID UID PRFLAGS PFLAGS CPU COMMAND *134677 53117 0 0 0x4000000 1 syz-executor 394592 35307 73 0x1100010 0 0 syslogd db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff84634053) at panic+0x270 sys/kern/subr_prf.c:198 kasan_memcpy(ffff8000018ceee0,ffff80003bb47e20,24) at kasan_memcpy+0x1ec sysvipc_infoout(200000000180,ffff80003bb484c0,ffff80003bb47e20,24,28,70,1ffff00007768fc0,dfff908000000000) at sysvipc_infoout+0x1a9 sys/kern/kern_sysctl.c:2713 sysctl_sysvipc(ffff80003bb484e8,1,200000000180,ffff80003bb484c0) at sysctl_sysvipc+0x224 sys/kern/kern_sysctl.c:-1 kern_sysctl_dirs(33,ffff80003bb484e8,1,200000000180,ffff80003bb484c0,0,1,1ffff00007769014) at kern_sysctl_dirs+0x30f sys/kern/kern_sysctl.c:429 kern_sysctl(ffff80003bb484e4,2,200000000180,ffff80003bb484c0,0,fffa,ffff80003bb48730) at kern_sysctl+0x1ce sys/kern/kern_sysctl.c:529 sys_sysctl(ffff80003bb7b250,ffff80003bb48730,ffff80003bb486a0) at sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 syscall(ffff80003bb48730) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003bb48730) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2827ba75770, count: 5 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 *cpu1: Caught invalid memory access at ffff8000018ceee0 size 36 op 1 ddb{1}> show kasan KASAN: invalid write of 36 bytes at 0xffff8000018ceee0 from pc 0xffffffff83484679 KASAN: first bad byte at 0xffff8000018ceee3 (+3); shadow 0x03: partial granule (out-of-bounds) KASAN: 0xffff8000018ceee3 is 3 bytes inside the 16-byte malloc slot [0xffff8000018ceee0..0xffff8000018ceef0) KASAN: allocated at: #0 malloc+0xda0 sys/kern/kern_malloc.c:446 #1 sysvipc_infoout+0x18e sys/kern/kern_sysctl.c:2711 #2 sysctl_sysvipc+0x224 sys/kern/kern_sysctl.c:-1 #3 kern_sysctl_dirs+0x30f sys/kern/kern_sysctl.c:429 #4 kern_sysctl+0x1ce sys/kern/kern_sysctl.c:529 #5 sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 #6 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 #7 Xsyscall+0x128 KASAN: pc: sysvipc_infoout+0x1a9 KASAN: call trace: #0 kasan_memcpy+0x1ca kasan_shadow_check sys/kern/subr_kasan.c:-1 [inline] #0 kasan_memcpy+0x1ca sys/kern/subr_kasan.c:1025 #1 sysvipc_infoout+0x1a9 sys/kern/kern_sysctl.c:2713 #2 sysctl_sysvipc+0x224 sys/kern/kern_sysctl.c:-1 #3 kern_sysctl_dirs+0x30f sys/kern/kern_sysctl.c:429 #4 kern_sysctl+0x1ce sys/kern/kern_sysctl.c:529 #5 sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 #6 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 #7 Xsyscall+0x128 KASAN: shadow of 0xffff8000018ced80..0xffff8000018cf000 (1 cell = 8 bytes): 0xffff8000018ced80: fc 08 fc 08 fc 08 fc 08 fc 08 fc 08 fc 08 fc 08 0xffff8000018cee00: fc 08 fc 08 fc 08 fc 08 fc 08 08 fb fc 08 fc 08 >0xffff8000018cee80: fc 08 fc 08 fc 08 fc 08 fc 08 04 fb[03]fb 08 08 0xffff8000018cef00: 08 08 08 08 08 08 08 08 08 08 08 08 08 08 08 08 0xffff8000018cef80: 08 08 08 08 08 08 08 08 08 08 08 08 08 08 08 08 KASAN: legend: 00 valid; 01..07 partial; fb malloc redzone; fc malloc freed; fd pool freed; fe kmem; fa global; f1..f4/f8 stack/scope ddb{1}> trace db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff84634053) at panic+0x270 sys/kern/subr_prf.c:198 kasan_memcpy(ffff8000018ceee0,ffff80003bb47e20,24) at kasan_memcpy+0x1ec sysvipc_infoout(200000000180,ffff80003bb484c0,ffff80003bb47e20,24,28,70,1ffff00007768fc0,dfff908000000000) at sysvipc_infoout+0x1a9 sys/kern/kern_sysctl.c:2713 sysctl_sysvipc(ffff80003bb484e8,1,200000000180,ffff80003bb484c0) at sysctl_sysvipc+0x224 sys/kern/kern_sysctl.c:-1 kern_sysctl_dirs(33,ffff80003bb484e8,1,200000000180,ffff80003bb484c0,0,1,1ffff00007769014) at kern_sysctl_dirs+0x30f sys/kern/kern_sysctl.c:429 kern_sysctl(ffff80003bb484e4,2,200000000180,ffff80003bb484c0,0,fffa,ffff80003bb48730) at kern_sysctl+0x1ce sys/kern/kern_sysctl.c:529 sys_sysctl(ffff80003bb7b250,ffff80003bb48730,ffff80003bb486a0) at sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 syscall(ffff80003bb48730) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003bb48730) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2827ba75770, count: -10 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80003bb47bb0 rbx 0xffff80003bb47c20 rdx 0 rcx 0xffff800028fe3ff0 rax 0xffff80000016e480 r8 0x101010101010101 r9 0x8080808080808080 r10 0xffff80003bb47998 r11 0xffffffff8263c7e0 x86_bus_space_io_read_1 r12 0xffffffff84634053 .str.5+0x9c553 r13 0xffff800028fe4c08 r14 0xffff800028fe4e07 r15 0x1 rip 0xffffffff81fd2ec7 db_enter+0x17 cs 0x8 rflags 0x246 rsp 0xffff80003bb47bb0 ss 0x10 db_enter+0x17: popq %rbp ddb{1}> show proc PROC (syz-executor) tid=134677 pid=53117 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=76, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003bb7a558,0xffffffff85e2a4c0 process=0xffff800030ad8020 user=0xffff80003bb3d000, vmspace=0xffff800001c447b8 estcpu=26, cpticks=22, pctcpu=0.0, user=0, sys=22, intr=0 ddb{1}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND 53117 457518 27585 0 2 0 0 syz-executor *53117 134677 27585 0 7 0 0x4000000 syz-executor 68167 164295 21469 0 3 0x2 0x80 piperd syz-executor 12617 493476 21469 0 3 0x2 0x80 piperd syz-executor 85036 497083 21469 0 3 0x2 0x80 piperd syz-executor 27585 354086 21469 0 3 0x2 0x80 nanoslp syz-executor 90986 305017 21469 0 3 0x2 0x80 piperd syz-executor 65297 486259 21469 0 3 0x2 0x80 piperd syz-executor 21469 238542 20681 0 3 0x2 0x80 wait syz-executor 20681 77520 72410 0 3 0x100002 0x88 sigsusp ksh 72410 112909 60980 0 3 0x10 0x88 kqread sshd-session 60980 148032 67029 0 3 0x12 0x80 kqread sshd-session 23827 480286 1 0 3 0x100003 0x80 ttyin getty 67029 448342 1 0 3 0 0x88 kqread sshd 14401 412834 9149 74 3 0x1100012 0x80 bpf pflogd 9149 386653 1 0 3 0 0x80 sbwait pflogd 35307 394592 86938 73 7 0x1100010 0 syslogd 86938 319487 1 0 3 0x100002 0x80 sbwait syslogd 16172 319298 1 0 3 0x100000 0x80 kqread resolvd 89237 166002 88478 77 3 0x100012 0x80 kqread dhcpleased 47955 235779 88478 77 3 0x100012 0x80 kqread dhcpleased 88478 290176 1 0 3 0 0x80 kqread dhcpleased 43144 339742 0 0 2 0x14000 0x40000200 smr 10554 422991 0 0 3 0x14000 0x200 pgzero zerothread 64839 327336 0 0 3 0x14000 0x200 aiodoned aiodoned 77774 183627 0 0 3 0x14000 0x200 syncer update 14991 454127 0 0 3 0x14000 0x200 cleaner cleaner 80826 432298 0 0 3 0x14000 0x200 reaper reaper 66676 293498 0 0 3 0x14000 0x200 pgdaemon pagedaemon 56827 437404 0 0 3 0x14000 0x200 bored viomb 60214 101942 0 0 3 0x14000 0x40000200 acpi0 acpi0 97893 2825 0 0 3 0x14000 0x40000200 idle1 37702 126327 0 0 3 0x14000 0x200 bored softnet1 73616 143493 0 0 3 0x14000 0x200 bored softnet0 43353 410618 0 0 3 0x14000 0x200 bored systqmp 43673 364762 0 0 3 0x14000 0x200 bored systq 56810 411321 0 0 3 0x14000 0x200 tmoslp softclockmp 33882 382885 0 0 3 0x14000 0x40000200 tmoslp softclock 52752 16076 0 0 3 0x14000 0x40000200 idle0 1 42543 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb{1}> show all locks Process 35307 (syslogd) thread 0xffff800029913c98 (394592) exclusive rrwlock inode r = 0 (0xffff8000018a55a0) #0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x632 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x53e sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xf0 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0x17e sys/kern/vfs_vops.c:527 #4 vn_lock+0xca sys/kern/vfs_vnops.c:576 #5 sys_fsync+0x200 sys/kern/vfs_syscalls.c:2890 #6 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11062 12324K 12623K 166960K 12340 0 pcb 17 24K 24K 166960K 46 0 rtable 220 12K 13K 166960K 508 0 pf 32 21K 38K 166960K 73 0 ifaddr 39 11K 12K 166960K 70 0 ifgroup 51 2K 2K 166960K 85 0 sysctl 4 1K 13K 166960K 8 0 counters 68 42K 43K 166960K 86 0 ioctlops 0 0K 4K 166960K 1526 0 iov 0 0K 12K 166960K 12 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1339 86K 87K 166960K 1689 0 UFS quota 1 36K 36K 166960K 1 0 UFS mount 5 44K 44K 166960K 5 0 shm 2 2K 6K 166960K 14 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 15 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1734 201K 292K 166960K 11964 0 file desc 10 33K 97K 166960K 488 0 sigio 0 0K 0K 166960K 3 0 proc 72 128K 193K 166960K 728 0 subproc 63 7K 9K 166960K 190 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 20K 20K 166960K 1 0 ip_moptions 0 0K 0K 166960K 3 0 in_multi 88 6K 7K 166960K 154 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 15 0 ISOFS mount 1 36K 36K 166960K 1 0 MSDOSFS mount 1 20K 20K 166960K 1 0 ttys 49 344K 344K 166960K 49 0 exec 0 0K 2K 166960K 468 0 fusefs mount 1 36K 36K 166960K 1 0 tdb 3 1K 1K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 175 229K 262K 166960K 5800 0 UVM aobj 18 4K 4K 166960K 21 0 pinsyscall 1059 1840K 1851K 166960K 1777 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 2 0 NDP 13 0K 2K 166960K 46 0 temp 37 9171K 9182K 166960K 5249 0 kqueue 14 44K 58K 166960K 79 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 28 0 0 1 0 1 1 0 8 0 rtpcb 120 47 0 44 1 0 1 1 0 8 0 rtentry 176 168 0 67 6 0 6 6 0 8 0 unpcb 144 301 0 282 4 0 4 4 0 8 3 syncache 336 4 0 4 2 2 0 1 0 8 0 tcpcb 736 38 0 34 1 0 1 1 0 8 0 arp 136 28 0 12 1 0 1 1 0 8 0 inpcb 328 214 0 207 2 0 2 2 0 8 1 nd6 152 41 0 18 2 0 2 2 0 8 1 kcovpl 48 21 0 14 1 0 1 1 0 8 0 ppxss 1192 1 0 1 1 0 1 1 0 8 1 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 1 0 0 1 0 1 1 0 8 0 pfosfp 40 1428 0 1428 5 3 2 5 0 8 2 pfosfpen 112 1428 0 1428 21 3 18 21 0 8 18 pfrktable 1344 1 0 1 1 0 1 1 0 8 1 pfstitem 24 41 0 0 1 0 1 1 0 8 0 pfstkey 128 41 0 0 2 0 2 2 0 8 0 pfstate 448 41 0 0 5 0 5 5 0 8 0 pfrule 1360 25 0 20 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 688 0 273 29 0 29 29 0 8 3 art_table 40 689 0 273 5 0 5 5 0 8 0 art_node 32 168 0 76 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 0 1 0 1 1 0 8 0 semapl 72 13 0 3 1 0 1 1 0 8 0 shmpl 112 18 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2027 0 535 94 0 94 94 0 8 0 ffsino 296 2027 0 535 116 0 116 116 0 8 0 nchpl 144 2601 0 881 65 0 65 65 0 8 0 vnodes 216 2367 0 0 132 0 132 132 0 8 0 namei 1024 8735 0 8735 2 1 1 2 0 8 1 percpumem 16 59 0 9 1 0 1 1 0 8 0 kstatmem 264 43 0 18 2 0 2 2 0 8 0 scxspl 216 8918 0 8918 4 3 1 3 1 8 1 plimitpl 152 57 0 40 1 0 1 1 0 8 0 sigapl 424 780 0 739 7 1 6 7 0 8 1 knotepl 120 224 0 0 8 1 7 7 0 8 0 kqueuepl 224 104 0 94 2 1 1 2 0 8 0 pipepl 344 223 0 196 3 0 3 3 0 8 0 fdescpl 528 764 0 740 3 0 3 3 0 8 1 filepl 160 3491 0 3291 13 0 13 13 0 8 3 lockfpl 104 106 0 104 1 0 1 1 0 8 0 lockfspl 48 46 0 44 1 0 1 1 0 8 0 sessionpl 144 49 0 40 1 0 1 1 0 8 0 pgrppl 48 72 0 55 1 0 1 1 0 8 0 ucredpl 104 439 0 426 1 0 1 1 0 8 0 zombiepl 144 741 0 739 1 0 1 1 0 8 0 processpl 1232 780 0 739 5 0 5 5 0 8 0 procpl 664 1200 0 1158 6 0 6 6 0 8 1 sosppl 176 5 0 5 1 0 1 1 0 8 1 sockpl 752 567 0 538 11 0 11 11 0 8 8 mcl64k 65536 11 0 0 2 0 2 2 0 8 0 mcl16k 16384 7 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k128 9344 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 1 0 0 1 0 1 1 0 8 0 mcl4k 4096 113 0 0 15 0 15 15 0 8 0 mcl2k 2048 21 0 0 3 0 3 3 0 8 0 mextrefs 64 19 0 0 1 0 1 1 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 204 0 0 13 0 13 13 0 8 0 bufpl 272 2840 0 106 183 0 183 183 0 8 0 anonpl 32 5399 0 0 44 0 44 44 0 222 0 amapchunkpl 152 17353 0 17062 26 1 25 25 0 158 10 amappl16 200 2236 0 2216 6 3 3 5 0 8 1 amappl15 192 5 0 4 1 0 1 1 0 8 0 amappl14 184 506 0 505 1 0 1 1 0 8 0 amappl13 176 140 0 128 1 0 1 1 0 8 0 amappl12 168 1039 0 1016 2 0 2 2 0 8 0 amappl11 160 3 0 3 2 1 1 1 0 8 1 amappl10 152 82 0 68 1 0 1 1 0 8 0 amappl9 144 277 0 276 1 0 1 1 0 8 0 amappl8 136 136 0 134 1 0 1 1 0 8 0 amappl7 128 154 0 141 1 0 1 1 0 8 0 amappl6 120 226 0 222 1 0 1 1 0 8 0 amappl5 112 121 0 109 1 0 1 1 0 8 0 amappl4 104 327 0 307 1 0 1 1 0 8 0 amappl3 96 3407 0 3335 4 0 4 4 0 8 0 amappl2 88 587 0 527 2 0 2 2 0 8 0 amappl1 80 12121 0 11543 16 2 14 15 0 8 1 amappl 88 4944 0 4838 4 0 4 4 0 92 0 uvmvnodes 80 107 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 20 0 3 1 0 1 1 0 8 0 uaddrrnd 24 764 0 740 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 764 0 740 1 0 1 1 0 8 0 vmmpekpl 168 8388 0 8345 3 0 3 3 0 8 0 vmmpepl 168 57228 0 55680 89 1 88 89 0 357 6 vmsppl 488 763 0 740 5 0 5 5 0 8 1 rwobjpl 80 18682 0 17706 24 1 23 24 0 8 0 pdppl 4096 1537 0 1480 103 32 71 89 0 8 14 pvpl 32 12515 0 0 102 1 101 101 0 265 0 pmappl 256 763 0 740 3 0 3 3 0 8 1 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 120 466 0 38 13 0 13 13 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x19: leave x86_ipi_db(ffffffff850aeff0) at x86_ipi_db+0x19 sys/arch/amd64/amd64/db_interface.c:412 x86_ipi_handler() at x86_ipi_handler+0x112 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff85df1c00) at __mp_lock+0x272 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff85df1c00) at __mp_lock+0x272 sys/kern/kern_lock.c:173 softintr_dispatch(0) at softintr_dispatch+0x215 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x7b sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff85df1c00) at __mp_lock+0x272 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff85df1c00) at __mp_lock+0x272 sys/kern/kern_lock.c:173 __mp_acquire_count(ffffffff85df1c00,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x423 sys/kern/kern_synch.c:369 vwaitforio(ffff8000018a0050,0,ffffffff846c2300,ffffffffffffffff) at vwaitforio+0xf3 sys/kern/vfs_subr.c:-1 ffs_fsync(ffff800029998600) at ffs_fsync+0x42a sys/ufs/ffs/ffs_vnops.c:476 VOP_FSYNC(ffff8000018a0050,ffff800000119b60,1,ffff800029913c98) at VOP_FSYNC+0x1bb sys/kern/vfs_vops.c:311 sys_fsync(ffff800029913c98,ffff8000299988a0,ffff800029998800) at sys_fsync+0x232 sys/kern/vfs_syscalls.c:2890 end trace frame: 0xffff800029998890, count: 0 ddb{0}> trace x86_ipi_db(ffffffff850aeff0) at x86_ipi_db+0x19 sys/arch/amd64/amd64/db_interface.c:412 x86_ipi_handler() at x86_ipi_handler+0x112 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff85df1c00) at __mp_lock+0x272 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff85df1c00) at __mp_lock+0x272 sys/kern/kern_lock.c:173 softintr_dispatch(0) at softintr_dispatch+0x215 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x7b sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff85df1c00) at __mp_lock+0x272 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff85df1c00) at __mp_lock+0x272 sys/kern/kern_lock.c:173 __mp_acquire_count(ffffffff85df1c00,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x423 sys/kern/kern_synch.c:369 vwaitforio(ffff8000018a0050,0,ffffffff846c2300,ffffffffffffffff) at vwaitforio+0xf3 sys/kern/vfs_subr.c:-1 ffs_fsync(ffff800029998600) at ffs_fsync+0x42a sys/ufs/ffs/ffs_vnops.c:476 VOP_FSYNC(ffff8000018a0050,ffff800000119b60,1,ffff800029913c98) at VOP_FSYNC+0x1bb sys/kern/vfs_vops.c:311 sys_fsync(ffff800029913c98,ffff8000299988a0,ffff800029998800) at sys_fsync+0x232 sys/kern/vfs_syscalls.c:2890 syscall(ffff8000299988a0) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000299988a0) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7b915420b620, count: -16 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x17: popq %rbp db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff84634053) at panic+0x270 sys/kern/subr_prf.c:198 kasan_memcpy(ffff8000018ceee0,ffff80003bb47e20,24) at kasan_memcpy+0x1ec sysvipc_infoout(200000000180,ffff80003bb484c0,ffff80003bb47e20,24,28,70,1ffff00007768fc0,dfff908000000000) at sysvipc_infoout+0x1a9 sys/kern/kern_sysctl.c:2713 sysctl_sysvipc(ffff80003bb484e8,1,200000000180,ffff80003bb484c0) at sysctl_sysvipc+0x224 sys/kern/kern_sysctl.c:-1 kern_sysctl_dirs(33,ffff80003bb484e8,1,200000000180,ffff80003bb484c0,0,1,1ffff00007769014) at kern_sysctl_dirs+0x30f sys/kern/kern_sysctl.c:429 kern_sysctl(ffff80003bb484e4,2,200000000180,ffff80003bb484c0,0,fffa,ffff80003bb48730) at kern_sysctl+0x1ce sys/kern/kern_sysctl.c:529 sys_sysctl(ffff80003bb7b250,ffff80003bb48730,ffff80003bb486a0) at sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 syscall(ffff80003bb48730) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003bb48730) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2827ba75770, count: 5 ddb{1}> trace db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff84634053) at panic+0x270 sys/kern/subr_prf.c:198 kasan_memcpy(ffff8000018ceee0,ffff80003bb47e20,24) at kasan_memcpy+0x1ec sysvipc_infoout(200000000180,ffff80003bb484c0,ffff80003bb47e20,24,28,70,1ffff00007768fc0,dfff908000000000) at sysvipc_infoout+0x1a9 sys/kern/kern_sysctl.c:2713 sysctl_sysvipc(ffff80003bb484e8,1,200000000180,ffff80003bb484c0) at sysctl_sysvipc+0x224 sys/kern/kern_sysctl.c:-1 kern_sysctl_dirs(33,ffff80003bb484e8,1,200000000180,ffff80003bb484c0,0,1,1ffff00007769014) at kern_sysctl_dirs+0x30f sys/kern/kern_sysctl.c:429 kern_sysctl(ffff80003bb484e4,2,200000000180,ffff80003bb484c0,0,fffa,ffff80003bb48730) at kern_sysctl+0x1ce sys/kern/kern_sysctl.c:529 sys_sysctl(ffff80003bb7b250,ffff80003bb48730,ffff80003bb486a0) at sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 syscall(ffff80003bb48730) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003bb48730) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2827ba75770, count: -10