panic: Caught invalid memory access at ffff8000018d6b90 size 36 op 1 Stopped at db_enter+0x17: popq %rbp TID PID UID PRFLAGS PFLAGS CPU COMMAND *450179 56772 0 0 0x4000000 0 syz-executor 90282 39967 73 0x1100010 0 1 syslogd db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff846330ad) at panic+0x270 sys/kern/subr_prf.c:198 kasan_memcpy(ffff8000018d6b90,ffff80003bc876c0,24) at kasan_memcpy+0x1ec sysctl_sysvipc(ffff80003bc87d88,1,200000000040,ffff80003bc87d60) at sysctl_sysvipc+0x3ee sys/kern/kern_sysctl.c:2714 kern_sysctl_dirs(33,ffff80003bc87d88,1,200000000040,ffff80003bc87d60,0,1,1ffff00007790f28) at kern_sysctl_dirs+0x30f sys/kern/kern_sysctl.c:429 kern_sysctl(ffff80003bc87d84,2,200000000040,ffff80003bc87d60,0,0,ffff80003bc87fd0) at kern_sysctl+0x1ce sys/kern/kern_sysctl.c:529 sys_sysctl(ffff800045ff5a10,ffff80003bc87fd0,ffff80003bc87f40) at sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 syscall(ffff80003bc87fd0) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003bc87fd0) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1fd95097c0, count: 6 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: Caught invalid memory access at ffff8000018d6b90 size 36 op 1 ddb{0}> show kasan KASAN: invalid write of 36 bytes at 0xffff8000018d6b90 from pc 0xffffffff8204b68e KASAN: first bad byte at 0xffff8000018d6b96 (+6); shadow 0x06: partial granule (out-of-bounds) KASAN: 0xffff8000018d6b96 is 6 bytes inside the 16-byte malloc slot [0xffff8000018d6b90..0xffff8000018d6ba0) KASAN: allocated at: #0 malloc+0xda0 sys/kern/kern_malloc.c:446 #1 sysctl_sysvipc+0x3cb sys/kern/kern_sysctl.c:-1 #2 kern_sysctl_dirs+0x30f sys/kern/kern_sysctl.c:429 #3 kern_sysctl+0x1ce sys/kern/kern_sysctl.c:529 #4 sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 #5 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 #6 Xsyscall+0x128 KASAN: pc: sysctl_sysvipc+0x3ee 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 sysctl_sysvipc+0x3ee sys/kern/kern_sysctl.c:2714 #2 kern_sysctl_dirs+0x30f sys/kern/kern_sysctl.c:429 #3 kern_sysctl+0x1ce sys/kern/kern_sysctl.c:529 #4 sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 #5 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 #6 Xsyscall+0x128 KASAN: shadow of 0xffff8000018d6a80..0xffff8000018d6d00 (1 cell = 8 bytes): 0xffff8000018d6a80: fc 08 fc 08 fc 08 fc 08 fc 08 fc 08 fc 08 fc 08 0xffff8000018d6b00: fc 08 fc 08 fc 08 fc 08 fc 08 fc 08 fc 08 fc 08 >0xffff8000018d6b80: fc 08[06]fb 08 08 08 08 08 08 08 08 08 08 08 08 0xffff8000018d6c00: 08 08 08 08 08 08 08 08 08 08 08 08 08 08 08 08 0xffff8000018d6c80: 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{0}> trace db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff846330ad) at panic+0x270 sys/kern/subr_prf.c:198 kasan_memcpy(ffff8000018d6b90,ffff80003bc876c0,24) at kasan_memcpy+0x1ec sysctl_sysvipc(ffff80003bc87d88,1,200000000040,ffff80003bc87d60) at sysctl_sysvipc+0x3ee sys/kern/kern_sysctl.c:2714 kern_sysctl_dirs(33,ffff80003bc87d88,1,200000000040,ffff80003bc87d60,0,1,1ffff00007790f28) at kern_sysctl_dirs+0x30f sys/kern/kern_sysctl.c:429 kern_sysctl(ffff80003bc87d84,2,200000000040,ffff80003bc87d60,0,0,ffff80003bc87fd0) at kern_sysctl+0x1ce sys/kern/kern_sysctl.c:529 sys_sysctl(ffff800045ff5a10,ffff80003bc87fd0,ffff80003bc87f40) at sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 syscall(ffff80003bc87fd0) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003bc87fd0) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1fd95097c0, count: -9 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003bc874b0 rbx 0xffff80003bc87520 rdx 0 rcx 0xffffffff84f02ff0 cpu_info_full_primary+0x1ff0 rax 0xffff800000172300 r8 0x101010101010101 r9 0x8080808080808080 r10 0xffff80003bc870c8 r11 0xffffffff82b69490 x86_bus_space_io_read_1 r12 0xffffffff846330ad .str.16+0x9a5ad r13 0xffffffff84f03c08 cpu_info_full_primary+0x2c08 r14 0xffffffff84f03e07 cpu_info_full_primary+0x2e07 r15 0x1 rip 0xffffffff829a9a77 db_enter+0x17 cs 0x8 rflags 0x246 rsp 0xffff80003bc874b0 ss 0x10 db_enter+0x17: popq %rbp ddb{0}> show proc PROC (syz-executor) tid=450179 pid=56772 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=59, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800045fec030,0xffff800045ff54f0 process=0xffff800045fe8028 user=0xffff80003bc7d000, vmspace=0xffff800001c8b3f0 estcpu=9, cpticks=25, pctcpu=0.0, user=0, sys=24, intr=1 ddb{0}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND 98164 5245 79574 0 2 0 0xc80 syz-executor 98164 500948 79574 0 3 0 0x4000080 piperd syz-executor 98164 21198 79574 0 3 0 0x4000080 fsleep syz-executor 32951 21879 95579 0 2 0 0 syz-executor 7527 334071 43413 0 2 0 0 syz-executor 7527 361082 43413 0 3 0 0x4000080 fsleep syz-executor 98473 251826 85395 0 2 0 0 syz-executor 56772 86894 56145 0 3 0 0x80 nanoslp syz-executor *56772 450179 56145 0 7 0 0x4000000 syz-executor 38475 415365 26549 0 2 0 0 syz-executor 38475 501595 26549 0 3 0 0x4000080 fsleep syz-executor 38475 106414 26549 0 3 0 0x4000080 fsleep syz-executor 71109 480506 11322 0 2 0x10 0xc80 syz-executor 71109 97233 11322 0 2 0x10 0x4000000 syz-executor 58831 57505 0 0 3 0x14000 0x280 nfsidl nfsio 4209 163285 0 0 3 0x14000 0x280 nfsidl nfsio 87067 461724 0 0 3 0x14000 0x280 nfsidl nfsio 37322 83991 0 0 3 0x14000 0x280 nfsidl nfsio 12375 64825 0 0 3 0x14000 0x280 nfsidl nfsio 7863 340789 0 0 3 0x14000 0x280 nfsidl nfsio 18215 117898 0 0 3 0x14000 0x280 nfsidl nfsio 46639 201500 0 0 3 0x14000 0x280 nfsidl nfsio 34985 23860 0 0 3 0x14000 0x280 nfsidl nfsio 91153 42252 0 0 3 0x14000 0x280 nfsidl nfsio 23988 393281 0 0 3 0x14000 0x280 nfsidl nfsio 76983 411458 0 0 3 0x14000 0x280 nfsidl nfsio 33702 274158 0 0 3 0x14000 0x280 nfsidl nfsio 76033 134747 0 0 3 0x14000 0x280 nfsidl nfsio 82603 26391 0 0 3 0x14000 0x280 nfsidl nfsio 80506 467890 0 0 3 0x14000 0x280 nfsidl nfsio 7401 334785 0 0 3 0x14000 0x280 nfsidl nfsio 43954 108609 0 0 3 0x14000 0x280 nfsidl nfsio 11413 232540 0 0 3 0x14000 0x280 nfsidl nfsio 61468 511140 0 0 3 0x14000 0x280 nfsidl nfsio 66700 126651 9930 0 2 0x2 0 syz-executor 95579 31761 9930 0 2 0x2 0xc80 syz-executor 79574 262069 9930 0 2 0x2 0xc80 syz-executor 56145 184410 9930 0 2 0x2 0xc80 syz-executor 26549 162863 9930 0 2 0x2 0xc80 syz-executor 11322 432608 9930 0 2 0x2 0xc80 syz-executor 85395 405891 9930 0 2 0x2 0xc80 syz-executor 43413 3036 9930 0 3 0x2 0x80 nanoslp syz-executor 9930 196841 19444 0 3 0x2 0x80 kqread syz-executor 19444 454823 51841 0 3 0x100002 0x88 sigsusp ksh 51841 227027 97212 0 3 0x10 0x88 kqread sshd-session 97212 232059 22872 0 3 0x12 0x80 kqread sshd-session 53244 408024 1 0 3 0x100003 0x80 ttyin getty 22872 365518 1 0 3 0 0x88 kqread sshd 17940 216156 88201 74 3 0x1100012 0x80 bpf pflogd 88201 309216 1 0 3 0 0x80 sbwait pflogd 39967 90282 33426 73 7 0x1100010 0 syslogd 33426 165482 1 0 3 0x100002 0x80 sbwait syslogd 29084 496820 1 0 3 0x100000 0x80 kqread resolvd 76064 463736 71292 77 3 0x100012 0x80 kqread dhcpleased 84848 449675 71292 77 3 0x100012 0x80 kqread dhcpleased 71292 470447 1 0 3 0 0x80 kqread dhcpleased 30875 348390 0 0 2 0x14000 0x40000200 smr 4983 362948 0 0 2 0x14000 0x200 zerothread 12089 471117 0 0 3 0x14000 0x200 aiodoned aiodoned 17173 422307 0 0 3 0x14000 0x200 syncer update 23300 461799 0 0 3 0x14000 0x200 cleaner cleaner 94881 79590 0 0 3 0x14000 0x200 reaper reaper 97550 356356 0 0 3 0x14000 0x200 pgdaemon pagedaemon 24108 397461 0 0 3 0x14000 0x200 bored viomb 12501 371270 0 0 3 0x14000 0x40000200 acpi0 acpi0 28171 437455 0 0 3 0x14000 0x40000200 idle1 54066 20391 0 0 3 0x14000 0x200 bored softnet1 45173 94025 0 0 3 0x14000 0x200 bored softnet0 13593 345318 0 0 3 0x14000 0x200 bored systqmp 14922 496795 0 0 3 0x14000 0x200 bored systq 42515 360493 0 0 2 0x14000 0x200 softclockmp 35971 156272 0 0 3 0x14000 0x40000200 tmoslp softclock 54657 334149 0 0 3 0x14000 0x40000200 idle0 1 447287 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb{0}> show all locks ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11063 12334K 12334K 166960K 12163 0 pcb 19 24K 24K 166960K 23 0 rtable 239 12K 13K 166960K 361 0 pf 34 22K 23K 166960K 50 0 ifaddr 43 12K 12K 166960K 47 0 ifgroup 55 2K 2K 166960K 62 0 sysctl 1 1K 13K 166960K 5 0 counters 70 42K 43K 166960K 74 0 ioctlops 0 0K 4K 166960K 1490 0 iov 0 0K 0K 166960K 2 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1295 83K 83K 166960K 1405 0 UFS quota 1 36K 36K 166960K 1 0 UFS mount 5 44K 44K 166960K 5 0 shm 2 2K 6K 166960K 3 0 VM map 2 1K 1K 166960K 2 0 sem 3 0K 0K 166960K 3 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1734 201K 292K 166960K 11964 0 file desc 17 61K 93K 166960K 159 0 proc 70 128K 209K 166960K 558 0 subproc 72 9K 9K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 20K 20K 166960K 1 0 ip_moptions 0 0K 0K 166960K 2 0 in_multi 99 7K 7K 166960K 99 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 3 0 ISOFS mount 1 36K 36K 166960K 1 0 MSDOSFS mount 1 20K 20K 166960K 1 0 ttys 43 303K 303K 166960K 43 0 exec 0 0K 2K 166960K 397 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 220 244K 272K 166960K 3365 0 UVM aobj 4 4K 4K 166960K 4 0 pinsyscall 1066 1722K 1725K 166960K 1355 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 12 0K 2K 166960K 30 0 temp 36 9162K 9174K 166960K 4070 0 kqueue 16 45K 49K 166960K 33 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 28 0 0 1 0 1 1 0 8 0 rtpcb 120 37 0 34 1 0 1 1 0 8 0 rtentry 176 112 0 1 6 0 6 6 0 8 0 unpcb 144 53 0 34 1 0 1 1 0 8 0 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 736 12 0 8 1 0 1 1 0 8 0 arp 136 18 0 0 1 0 1 1 0 8 0 inpcb 328 80 0 70 2 0 2 2 0 8 1 nd6 152 25 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 1 0 1 1 0 1 1 0 8 1 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 20 0 0 1 0 1 1 0 8 0 pfstkey 128 20 0 0 1 0 1 1 0 8 0 pfstate 448 20 0 0 3 0 3 3 0 8 0 pfrule 1360 21 0 15 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 454 0 0 29 0 29 29 0 8 0 art_table 40 455 0 0 5 0 5 5 0 8 0 art_node 32 112 0 11 1 0 1 1 0 8 0 semapl 72 1 0 0 1 0 1 1 0 8 0 shmpl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1635 0 165 93 0 93 93 0 8 0 ffsino 296 1635 0 165 114 0 114 114 0 8 0 nchpl 144 1858 0 157 64 0 64 64 0 8 0 vnodes 216 1732 0 0 97 0 97 97 0 8 0 namei 1024 5806 0 5806 1 0 1 1 0 8 1 percpumem 16 53 0 2 1 0 1 1 0 8 0 kstatmem 264 31 0 4 3 0 3 3 0 8 1 scxspl 216 6831 0 6830 4 2 2 2 1 8 1 plimitpl 152 29 0 12 1 0 1 1 0 8 0 sigapl 424 508 0 441 8 0 8 8 0 8 0 knotepl 120 93 0 0 3 0 3 3 0 8 0 kqueuepl 224 31 0 20 1 0 1 1 0 8 0 pipepl 344 133 0 105 3 0 3 3 0 8 0 fdescpl 528 472 0 441 3 0 3 3 0 8 0 filepl 160 1798 0 1577 12 0 12 12 0 8 2 lockfpl 104 18 0 16 1 0 1 1 0 8 0 lockfspl 48 10 0 8 1 0 1 1 0 8 0 sessionpl 144 25 0 16 1 0 1 1 0 8 0 pgrppl 48 33 0 16 1 0 1 1 0 8 0 ucredpl 104 209 0 194 1 0 1 1 0 8 0 zombiepl 144 441 0 441 1 0 1 1 0 8 1 processpl 1232 508 0 441 6 0 6 6 0 8 0 procpl 664 550 0 476 7 0 7 7 0 8 0 sockpl 752 170 0 138 4 0 4 4 0 8 0 mcl64k 65536 1 0 0 1 0 1 1 0 8 0 mcl9k128 9344 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 120 0 0 15 0 15 15 0 8 0 mcl2k 2048 10 0 0 2 0 2 2 0 8 0 mextrefs 64 14 0 0 1 0 1 1 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 124 0 0 8 0 8 8 0 8 0 bufpl 272 2340 0 105 149 0 149 149 0 8 0 anonpl 32 3827 0 0 31 0 31 31 0 222 0 amapchunkpl 152 9280 0 8850 20 0 20 20 0 158 2 amappl16 200 1891 0 1844 5 2 3 5 0 8 0 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 442 0 441 1 0 1 1 0 8 0 amappl13 176 125 0 113 1 0 1 1 0 8 0 amappl12 168 740 0 711 2 0 2 2 0 8 0 amappl11 160 9 0 9 2 2 0 1 0 8 0 amappl10 152 65 0 51 1 0 1 1 0 8 0 amappl9 144 275 0 274 2 1 1 1 0 8 0 amappl8 136 115 0 113 1 0 1 1 0 8 0 amappl7 128 149 0 136 1 0 1 1 0 8 0 amappl6 120 159 0 158 1 0 1 1 0 8 0 amappl5 112 108 0 97 1 0 1 1 0 8 0 amappl4 104 296 0 278 1 0 1 1 0 8 0 amappl3 96 1625 0 1522 3 0 3 3 0 8 0 amappl2 88 572 0 513 2 0 2 2 0 8 0 amappl1 80 10703 0 10102 15 0 15 15 0 8 1 amappl 88 2605 0 2456 4 0 4 4 0 92 0 uvmvnodes 80 98 0 0 2 0 2 2 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 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 472 0 441 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 472 0 441 1 0 1 1 0 8 0 vmmpekpl 168 6003 0 5967 2 0 2 2 0 8 0 vmmpepl 168 39855 0 37954 87 0 87 87 0 357 1 vmsppl 488 471 0 441 5 0 5 5 0 8 1 rwobjpl 80 15132 0 14107 25 0 25 25 0 8 1 pdppl 4096 953 0 882 99 20 79 87 0 8 8 pvpl 32 10089 0 0 83 1 82 82 0 265 0 pmappl 256 471 0 441 3 0 3 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 120 415 0 22 13 0 13 13 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff846330ad) at panic+0x270 sys/kern/subr_prf.c:198 kasan_memcpy(ffff8000018d6b90,ffff80003bc876c0,24) at kasan_memcpy+0x1ec sysctl_sysvipc(ffff80003bc87d88,1,200000000040,ffff80003bc87d60) at sysctl_sysvipc+0x3ee sys/kern/kern_sysctl.c:2714 kern_sysctl_dirs(33,ffff80003bc87d88,1,200000000040,ffff80003bc87d60,0,1,1ffff00007790f28) at kern_sysctl_dirs+0x30f sys/kern/kern_sysctl.c:429 kern_sysctl(ffff80003bc87d84,2,200000000040,ffff80003bc87d60,0,0,ffff80003bc87fd0) at kern_sysctl+0x1ce sys/kern/kern_sysctl.c:529 sys_sysctl(ffff800045ff5a10,ffff80003bc87fd0,ffff80003bc87f40) at sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 syscall(ffff80003bc87fd0) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003bc87fd0) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1fd95097c0, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x19: leave x86_ipi_db(ffff800028ff3ff0) 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_release_all(ffffffff85cf0000) at __mp_release_all+0x10c sys/kern/kern_lock.c:223 tsleep_nsec(ffff8000018ac6b8,11,ffffffff84931820,ffffffffffffffff) at tsleep_nsec+0x236 sys/kern/kern_synch.c:-1 vwaitforio(ffff8000018ac638,0,ffffffff84931820,ffffffffffffffff) at vwaitforio+0xf3 sys/kern/vfs_subr.c:-1 ffs_fsync(ffff80002999c860) at ffs_fsync+0x42a sys/ufs/ffs/ffs_vnops.c:476 VOP_FSYNC(ffff8000018ac638,ffff800000119a28,1,ffff800029923c98) at VOP_FSYNC+0x1bb sys/kern/vfs_vops.c:311 sys_fsync(ffff800029923c98,ffff80002999caf0,ffff80002999ca60) at sys_fsync+0x232 sys/kern/vfs_syscalls.c:2890 syscall(ffff80002999caf0) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002999caf0) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x736c194e7a40, count: 4 ddb{1}> trace x86_ipi_db(ffff800028ff3ff0) 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_release_all(ffffffff85cf0000) at __mp_release_all+0x10c sys/kern/kern_lock.c:223 tsleep_nsec(ffff8000018ac6b8,11,ffffffff84931820,ffffffffffffffff) at tsleep_nsec+0x236 sys/kern/kern_synch.c:-1 vwaitforio(ffff8000018ac638,0,ffffffff84931820,ffffffffffffffff) at vwaitforio+0xf3 sys/kern/vfs_subr.c:-1 ffs_fsync(ffff80002999c860) at ffs_fsync+0x42a sys/ufs/ffs/ffs_vnops.c:476 VOP_FSYNC(ffff8000018ac638,ffff800000119a28,1,ffff800029923c98) at VOP_FSYNC+0x1bb sys/kern/vfs_vops.c:311 sys_fsync(ffff800029923c98,ffff80002999caf0,ffff80002999ca60) at sys_fsync+0x232 sys/kern/vfs_syscalls.c:2890 syscall(ffff80002999caf0) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002999caf0) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x736c194e7a40, count: -11