panic: kernel diagnostic assertion "cifp != NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/net/route.c", line 1078 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 63163 54834 0 0x2 0 0K ifconfig 204963 97438 73 0x1100010 0 1 syslogd db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830e1ebe) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff8309b1f0,ffffffff830104f3,436,ffffffff83007c05) at __assert+0x29 rtrequest(1,ffff80002a0d83a8,4,ffff80002a0d8450,0) at rtrequest+0xdce sys/net/route.c:1078 rt_ifa_add(ffff8000015bec00,840100,ffff8000015bec58,0) at rt_ifa_add+0x22e sys/net/route.c:1273 in_ifinit(ffff80000158b800,ffff8000015bec00,ffff80002a0d86c0,1) at in_ifinit+0x4bd in_insert_prefix sys/netinet/in.c:770 [inline] in_ifinit(ffff80000158b800,ffff8000015bec00,ffff80002a0d86c0,1) at in_ifinit+0x4bd sys/netinet/in.c:703 in_ioctl_change_ifaddr(8040691a,ffff80002a0d86b0,ffff80000158b800) at in_ioctl_change_ifaddr+0x92c sys/netinet/in.c:504 ifioctl(ffff800001588010,8040691a,ffff80002a0d86b0,ffff800033f87c08) at ifioctl+0x1571 pru_control sys/sys/protosw.h:355 [inline] ifioctl(ffff800001588010,8040691a,ffff80002a0d86b0,ffff800033f87c08) at ifioctl+0x1571 sys/net/if.c:2449 sys_ioctl(ffff800033f87c08,ffff80002a0d8890,ffff80002a0d87e0) at sys_ioctl+0x67c syscall(ffff80002a0d8890) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0d8890) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a0752f779d0, count: 4 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: kernel diagnostic assertion "cifp != NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/net/route.c", line 1078 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830e1ebe) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff8309b1f0,ffffffff830104f3,436,ffffffff83007c05) at __assert+0x29 rtrequest(1,ffff80002a0d83a8,4,ffff80002a0d8450,0) at rtrequest+0xdce sys/net/route.c:1078 rt_ifa_add(ffff8000015bec00,840100,ffff8000015bec58,0) at rt_ifa_add+0x22e sys/net/route.c:1273 in_ifinit(ffff80000158b800,ffff8000015bec00,ffff80002a0d86c0,1) at in_ifinit+0x4bd in_insert_prefix sys/netinet/in.c:770 [inline] in_ifinit(ffff80000158b800,ffff8000015bec00,ffff80002a0d86c0,1) at in_ifinit+0x4bd sys/netinet/in.c:703 in_ioctl_change_ifaddr(8040691a,ffff80002a0d86b0,ffff80000158b800) at in_ioctl_change_ifaddr+0x92c sys/netinet/in.c:504 ifioctl(ffff800001588010,8040691a,ffff80002a0d86b0,ffff800033f87c08) at ifioctl+0x1571 pru_control sys/sys/protosw.h:355 [inline] ifioctl(ffff800001588010,8040691a,ffff80002a0d86b0,ffff800033f87c08) at ifioctl+0x1571 sys/net/if.c:2449 sys_ioctl(ffff800033f87c08,ffff80002a0d8890,ffff80002a0d87e0) at sys_ioctl+0x67c syscall(ffff80002a0d8890) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0d8890) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a0752f779d0, count: -11 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a0d81a0 rbx 0xffffffff83473d87 cpu_info_full_primary+0x2d87 rdx 0 rcx 0xffff800033f87c08 rax 0xffffffff83472ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x42b8c99759b2aa14 r11 0x7c099fd596a68283 r12 0xffffffff83473b88 cpu_info_full_primary+0x2b88 r13 0 r14 0 r15 0x1 rip 0xffffffff826b1a55 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a0d8190 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (ifconfig) tid=63163 pid=54834 tcnt=1 stat=onproc flags process=2 proc=0 runpri=50, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800033f87470,0xffffffff8352bd90 process=0xffff80002d573678 user=0xffff80002a0d3000, vmspace=0xfffffd806cb99540 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *54834 63163 16829 0 7 0x2 ifconfig 16829 488553 45095 0 3 0x10008a sigsusp sh 23264 46826 87573 0 2 0x2 syz-executor 1047 462014 87573 0 3 0x2 clonelk syz-executor 45095 360562 87573 0 3 0x82 wait syz-executor 78738 404826 87573 0 3 0x82 piperd syz-executor 79615 323085 87573 0 3 0x82 piperd syz-executor 84706 100860 87573 0 3 0x82 piperd syz-executor 51423 494917 87573 0 3 0x82 piperd syz-executor 15671 481136 0 0 3 0x14200 acct acct 29126 462899 0 0 3 0x14200 bored sosplice 87573 177185 87176 0 3 0x82 wait syz-executor 87176 517046 63102 0 3 0x10008a sigsusp ksh 63102 89922 94188 0 3 0x98 kqread sshd-session 94188 202064 69288 0 3 0x92 kqread sshd-session 4063 117020 1 0 3 0x100083 ttyin getty 69288 432247 1 0 3 0x88 kqread sshd 27464 515644 3522 74 3 0x1100092 bpf pflogd 3522 138352 1 0 3 0x80 sbwait pflogd 97438 204963 3816 73 7 0x1100010 syslogd 3816 409959 1 0 3 0x100082 sbwait syslogd 7161 400153 1 0 3 0x100080 kqread resolvd 72800 229152 76658 77 3 0x100092 kqread dhcpleased 36798 396389 76658 77 3 0x100092 kqread dhcpleased 76658 322680 1 0 3 0x80 kqread dhcpleased 79623 369722 0 0 3 0x14200 bored smr 66950 357400 0 0 2 0x14200 zerothread 6445 341259 0 0 3 0x14200 aiodoned aiodoned 10739 444566 0 0 3 0x14200 syncer update 66634 314900 0 0 3 0x14200 cleaner cleaner 62212 77975 0 0 3 0x14200 reaper reaper 3223 233789 0 0 3 0x14200 pgdaemon pagedaemon 97859 478298 0 0 3 0x14200 bored viomb 83262 165362 0 0 3 0x40014200 acpi0 acpi0 21457 30961 0 0 3 0x40014200 idle1 76746 283008 0 0 3 0x14200 bored softnet3 41847 37427 0 0 3 0x14200 bored softnet2 40656 8278 0 0 3 0x14200 bored softnet1 3808 23525 0 0 3 0x14200 bored softnet0 64388 97953 0 0 3 0x14200 bored systqmp 37660 174915 0 0 3 0x14200 bored systq 68884 74610 0 0 3 0x14200 tmoslp softclockmp 82894 335748 0 0 3 0x40014200 tmoslp softclock 52071 33175 0 0 3 0x40014200 idle0 1 407457 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 54834 (ifconfig) thread 0xffff800033f87c08 (63163) exclusive rwlock netlock r = 0 (0xffffffff834c1440) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 in_ioctl_change_ifaddr+0xbe sys/netinet/in.c:413 #2 ifioctl+0x1571 pru_control sys/sys/protosw.h:355 [inline] #2 ifioctl+0x1571 sys/net/if.c:2449 #3 sys_ioctl+0x67c #4 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #4 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff835a3c08) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 ifioctl+0x47f sys/net/if.c:2096 #2 sys_ioctl+0x67c #3 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #3 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #4 Xsyscall+0x128 Process 97438 (syslogd) thread 0xffff8000ffffdbe8 (204963) exclusive rrwlock inode r = 0 (0xfffffd806e1481b0) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 sys_fsync+0x152 sys/kern/vfs_syscalls.c:2926 #6 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #6 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10189 14184K 14459K 166960K 11667 0 pcb 17 16K 18K 166960K 82 0 rtable 172 6K 8K 166960K 715 0 pf 32 17K 21K 166960K 107 0 ifaddr 34 5K 7K 166960K 120 0 ifgroup 47 2K 2K 166960K 105 0 counters 60 35K 36K 166960K 90 0 ioctlops 0 0K 4K 166960K 1522 0 iov 0 0K 8K 166960K 17 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1492 94K 94K 166960K 1929 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 2K 6K 166960K 12 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 14 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 12 41K 93K 166960K 595 0 sigio 0 0K 0K 166960K 8 0 proc 79 103K 128K 166960K 808 0 subproc 103 6K 6K 166960K 246 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 83 0 in_multi 67 5K 7K 166960K 203 0 ether_multi 1 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 557 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 177 63K 76K 166960K 6444 0 UVM aobj 13 2K 2K 166960K 14 0 pinsyscall 37 74K 103K 166960K 1893 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 17 0 NDP 10 0K 2K 166960K 58 0 temp 48 6813K 6879K 166960K 24946 0 kqueue 13 20K 26K 166960K 67 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 77 0 74 1 0 1 1 0 8 0 rtentry 112 245 0 170 4 1 3 4 0 8 0 unpcb 144 494 0 477 6 5 1 6 0 8 0 syncache 336 4 0 4 2 2 0 1 0 8 0 tcpcb 808 135 0 131 4 3 1 4 0 8 0 arp 120 35 0 20 1 0 1 1 0 8 0 inpcb 336 713 0 704 18 10 8 10 0 8 7 nd6 136 51 0 36 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 kcovpl 48 18 0 11 1 0 1 1 0 8 0 ppxss 1168 3 0 3 1 1 0 1 0 8 0 pffrag 232 3 0 0 1 0 1 1 0 482 0 pffrnode 88 3 0 0 1 0 1 1 0 8 0 pffrent 40 4 0 1 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 6 0 4 1 0 1 1 0 8 0 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pftag 88 3 0 3 1 1 0 1 0 8 0 pfstitem 24 57 0 22 1 0 1 1 0 8 0 pfstkey 128 59 0 24 2 0 2 2 0 8 0 pfstate 376 56 0 23 4 0 4 4 0 8 0 pfrule 1344 26 0 19 2 0 2 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 874 0 556 36 8 28 29 0 8 3 art_table 32 876 0 556 4 0 4 4 0 8 0 art_node 16 209 0 143 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 6 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 12 0 2 1 0 1 1 0 8 0 shmpl 112 11 0 1 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2127 0 606 96 0 96 96 0 8 0 ffsino 272 2127 0 606 102 0 102 102 0 8 0 nchpl 144 2799 0 1116 63 0 63 63 0 8 0 uvmvnodes 80 2704 0 0 56 0 56 56 0 8 0 vnodes 216 2704 0 0 151 0 151 151 0 8 0 namei 1024 10112 0 10112 2 1 1 2 0 8 1 percpumem 16 59 0 15 1 0 1 1 0 8 0 pfiaddrpl 120 1 0 0 1 0 1 1 0 8 0 kstatmem 264 50 0 30 2 0 2 2 0 8 0 scxspl 216 9886 0 9886 11 10 1 8 1 8 1 plimitpl 152 76 0 59 1 0 1 1 0 8 0 sigapl 424 874 0 828 9 2 7 7 0 8 1 futexpl 64 5135 0 5135 2 2 0 1 0 8 0 knotepl 120 320 0 0 10 0 10 10 0 8 0 kqueuepl 216 163 0 154 5 4 1 5 0 8 0 pipepl 320 198 0 171 4 1 3 4 0 8 0 fdescpl 496 854 0 828 6 1 5 5 0 8 0 filepl 152 4760 0 4523 22 10 12 18 0 8 2 lockfpl 104 284 0 282 2 1 1 2 0 8 0 lockfspl 48 66 0 64 1 0 1 1 0 8 0 sessionpl 144 33 0 24 1 0 1 1 0 8 0 pgrppl 48 59 0 42 1 0 1 1 0 8 0 ucredpl 104 438 0 425 1 0 1 1 0 8 0 zombiepl 144 829 0 828 1 0 1 1 0 8 0 processpl 1160 874 0 828 5 1 4 5 0 8 0 procpl 648 1401 0 1355 7 1 6 6 0 8 1 srpgc 96 4 0 4 1 1 0 1 0 8 0 sosppl 168 1 0 1 1 1 0 1 0 8 0 sockpl 664 1292 0 1264 23 14 9 15 0 8 6 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 239 0 0 30 0 30 30 0 8 0 mtagpl 96 6 0 0 1 0 1 1 0 8 0 mbufpl 256 250 0 0 16 0 16 16 0 8 0 bufpl 280 5880 0 99 413 0 413 413 0 8 0 anonpl 24 155219 0 152016 53 1 52 52 0 185 25 amapchunkpl 152 20261 0 19946 32 0 32 32 0 158 12 amappl16 200 2718 0 2709 7 5 2 5 0 8 0 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 132 0 120 1 0 1 1 0 8 0 amappl13 176 3 0 3 1 1 0 1 0 8 0 amappl12 168 1637 0 1611 4 2 2 3 0 8 0 amappl11 160 54 0 40 1 0 1 1 0 8 0 amappl10 152 41 0 41 1 1 0 1 0 8 0 amappl9 144 233 0 233 1 1 0 1 0 8 0 amappl8 136 49 0 46 1 0 1 1 0 8 0 amappl7 128 177 0 164 1 0 1 1 0 8 0 amappl6 120 256 0 253 1 0 1 1 0 8 0 amappl5 112 167 0 154 1 0 1 1 0 8 0 amappl4 104 334 0 314 1 0 1 1 0 8 0 amappl3 96 4096 0 4025 4 0 4 4 0 8 0 amappl2 88 789 0 718 2 0 2 2 0 8 0 amappl1 80 9583 0 9024 15 2 13 14 0 8 0 amappl 88 5981 0 5865 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 dma512 512 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 72 13 0 1 1 0 1 1 0 8 0 uaddrrnd 24 854 0 828 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 854 0 828 1 0 1 1 0 8 0 vmmpekpl 168 7922 0 7871 3 0 3 3 0 8 0 vmmpepl 168 58039 0 56525 90 6 84 90 0 357 3 vmsppl 440 853 0 828 6 2 4 5 0 8 0 rwobjpl 56 21086 0 17492 51 0 51 51 0 8 0 pdppl 4096 1715 0 1656 111 40 71 85 0 8 12 pvpl 32 28391 0 0 229 0 229 229 0 265 0 pmappl 248 853 0 828 3 0 3 3 0 8 1 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 431 0 68 11 0 11 11 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:437 panic(ffffffff830e1ebe) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff8309b1f0,ffffffff830104f3,436,ffffffff83007c05) at __assert+0x29 rtrequest(1,ffff80002a0d83a8,4,ffff80002a0d8450,0) at rtrequest+0xdce sys/net/route.c:1078 rt_ifa_add(ffff8000015bec00,840100,ffff8000015bec58,0) at rt_ifa_add+0x22e sys/net/route.c:1273 in_ifinit(ffff80000158b800,ffff8000015bec00,ffff80002a0d86c0,1) at in_ifinit+0x4bd in_insert_prefix sys/netinet/in.c:770 [inline] in_ifinit(ffff80000158b800,ffff8000015bec00,ffff80002a0d86c0,1) at in_ifinit+0x4bd sys/netinet/in.c:703 in_ioctl_change_ifaddr(8040691a,ffff80002a0d86b0,ffff80000158b800) at in_ioctl_change_ifaddr+0x92c sys/netinet/in.c:504 ifioctl(ffff800001588010,8040691a,ffff80002a0d86b0,ffff800033f87c08) at ifioctl+0x1571 pru_control sys/sys/protosw.h:355 [inline] ifioctl(ffff800001588010,8040691a,ffff80002a0d86b0,ffff800033f87c08) at ifioctl+0x1571 sys/net/if.c:2449 sys_ioctl(ffff800033f87c08,ffff80002a0d8890,ffff80002a0d87e0) at sys_ioctl+0x67c syscall(ffff80002a0d8890) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0d8890) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a0752f779d0, count: -11 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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(ffffffff835a3a00) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835a3a00) at __mp_lock+0x192 sys/kern/kern_lock.c:144 __mp_acquire_count(ffffffff835a3a00,1) at __mp_acquire_count+0x58 mi_switch() at mi_switch+0x658 sys/kern/sched_bsd.c:460 sleep_finish(0,1) at sleep_finish+0x219 sys/kern/kern_synch.c:416 vwaitforio(fffffd806def9998,0,ffffffff8309c905,ffffffffffffffff) at vwaitforio+0xd2 ffs_fsync(ffff80002a06ac40) at ffs_fsync+0x376 sys/ufs/ffs/ffs_vnops.c:482 VOP_FSYNC(fffffd806def9998,fffffd807f7d39c0,1,ffff8000ffffdbe8) at VOP_FSYNC+0x108 sys/kern/vfs_vops.c:311 sys_fsync(ffff8000ffffdbe8,ffff80002a06adf0,ffff80002a06ad40) at sys_fsync+0x16f sys/kern/vfs_syscalls.c:2926 syscall(ffff80002a06adf0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a06adf0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x70a5afc8db40, count: 2 ddb{1}> trace x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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(ffffffff835a3a00) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835a3a00) at __mp_lock+0x192 sys/kern/kern_lock.c:144 __mp_acquire_count(ffffffff835a3a00,1) at __mp_acquire_count+0x58 mi_switch() at mi_switch+0x658 sys/kern/sched_bsd.c:460 sleep_finish(0,1) at sleep_finish+0x219 sys/kern/kern_synch.c:416 vwaitforio(fffffd806def9998,0,ffffffff8309c905,ffffffffffffffff) at vwaitforio+0xd2 ffs_fsync(ffff80002a06ac40) at ffs_fsync+0x376 sys/ufs/ffs/ffs_vnops.c:482 VOP_FSYNC(fffffd806def9998,fffffd807f7d39c0,1,ffff8000ffffdbe8) at VOP_FSYNC+0x108 sys/kern/vfs_vops.c:311 sys_fsync(ffff8000ffffdbe8,ffff80002a06adf0,ffff80002a06ad40) at sys_fsync+0x16f sys/kern/vfs_syscalls.c:2926 syscall(ffff80002a06adf0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a06adf0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x70a5afc8db40, count: -13