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 *186896 40491 0 0x2 0 0K ifconfig 52777 26699 73 0x1100010 0 1 syslogd db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830e57db) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff8309a5aa,ffffffff830119a0,436,ffffffff830089af) at __assert+0x29 rtrequest(1,ffff80002a141c48,4,ffff80002a141cf0,0) at rtrequest+0xdce sys/net/route.c:1078 rt_ifa_add(ffff800001286e00,840100,ffff800001286e58,0) at rt_ifa_add+0x22e sys/net/route.c:1273 in_ifinit(ffff8000012bb800,ffff800001286e00,ffff80002a141f60,1) at in_ifinit+0x4bd in_insert_prefix sys/netinet/in.c:770 [inline] in_ifinit(ffff8000012bb800,ffff800001286e00,ffff80002a141f60,1) at in_ifinit+0x4bd sys/netinet/in.c:703 in_ioctl_change_ifaddr(8040691a,ffff80002a141f50,ffff8000012bb800) at in_ioctl_change_ifaddr+0x92c sys/netinet/in.c:504 ifioctl(ffff800010fd1268,8040691a,ffff80002a141f50,ffff8000ffff0f58) at ifioctl+0x1571 pru_control sys/sys/protosw.h:355 [inline] ifioctl(ffff800010fd1268,8040691a,ffff80002a141f50,ffff8000ffff0f58) at ifioctl+0x1571 sys/net/if.c:2449 sys_ioctl(ffff8000ffff0f58,ffff80002a142130,ffff80002a142080) at sys_ioctl+0x67c syscall(ffff80002a142130) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a142130) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x77444afe7420, 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(ffffffff830e57db) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff8309a5aa,ffffffff830119a0,436,ffffffff830089af) at __assert+0x29 rtrequest(1,ffff80002a141c48,4,ffff80002a141cf0,0) at rtrequest+0xdce sys/net/route.c:1078 rt_ifa_add(ffff800001286e00,840100,ffff800001286e58,0) at rt_ifa_add+0x22e sys/net/route.c:1273 in_ifinit(ffff8000012bb800,ffff800001286e00,ffff80002a141f60,1) at in_ifinit+0x4bd in_insert_prefix sys/netinet/in.c:770 [inline] in_ifinit(ffff8000012bb800,ffff800001286e00,ffff80002a141f60,1) at in_ifinit+0x4bd sys/netinet/in.c:703 in_ioctl_change_ifaddr(8040691a,ffff80002a141f50,ffff8000012bb800) at in_ioctl_change_ifaddr+0x92c sys/netinet/in.c:504 ifioctl(ffff800010fd1268,8040691a,ffff80002a141f50,ffff8000ffff0f58) at ifioctl+0x1571 pru_control sys/sys/protosw.h:355 [inline] ifioctl(ffff800010fd1268,8040691a,ffff80002a141f50,ffff8000ffff0f58) at ifioctl+0x1571 sys/net/if.c:2449 sys_ioctl(ffff8000ffff0f58,ffff80002a142130,ffff80002a142080) at sys_ioctl+0x67c syscall(ffff80002a142130) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a142130) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x77444afe7420, count: -11 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a141a40 rbx 0xffffffff8349ddcf cpu_info_full_primary+0x2dcf rdx 0 rcx 0xffff8000ffff0f58 rax 0xffffffff8349cff0 cpu_info_full_primary+0x1ff0 r8 0 r9 0x8080808080808080 r10 0x59db8e008b57bdf1 r11 0x50101274ce01e14b r12 0xffffffff8349dbd0 cpu_info_full_primary+0x2bd0 r13 0 r14 0 r15 0x1 rip 0xffffffff81d88135 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a141a30 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (ifconfig) tid=186896 pid=40491 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=0xffff8000ffff02b0,0xffffffff8356edf8 process=0xffff8000fffed240 user=0xffff80002a13d000, vmspace=0xfffffd806cd8aa68 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *40491 186896 41787 0 7 0x2 ifconfig 78714 433226 51678 0 2 0x100002 sh 41787 90664 7810 0 3 0x10008a sigsusp sh 51678 432516 12430 0 3 0x82 wait syz-executor 59746 441412 12430 0 3 0x2 clonelk syz-executor 7810 225358 12430 0 3 0x82 wait syz-executor 83419 400280 12430 0 3 0x82 piperd syz-executor 41672 362168 12430 0 3 0x82 piperd syz-executor 91620 502805 0 0 3 0x14200 acct acct 46322 136543 1 0 3 0x80 nanoslp init 12707 426470 12430 0 3 0x82 piperd syz-executor 55614 49097 12430 0 3 0x82 piperd syz-executor 40314 13065 0 0 3 0x14200 bored sosplice 12430 361783 84216 0 3 0x82 wait syz-executor 84216 214795 48127 0 3 0x10008a sigsusp ksh 48127 241565 12563 0 3 0x98 kqread sshd-session 12563 240839 53990 0 3 0x92 kqread sshd-session 53990 362811 1 0 3 0x88 kqread sshd 20090 457534 41645 74 3 0x1100092 bpf pflogd 41645 162734 1 0 3 0x80 sbwait pflogd 26699 52777 85591 73 7 0x1100010 syslogd 85591 414639 1 0 3 0x100082 sbwait syslogd 7952 350080 1 0 3 0x100080 kqread resolvd 19392 165416 19234 77 3 0x100092 kqread dhcpleased 72867 258459 19234 77 3 0x100092 kqread dhcpleased 19234 273079 1 0 3 0x80 kqread dhcpleased 34943 409847 0 0 3 0x14200 bored smr 83658 493901 0 0 2 0x14200 zerothread 96890 137181 0 0 3 0x14200 aiodoned aiodoned 69993 153805 0 0 3 0x14200 syncer update 78546 220355 0 0 3 0x14200 cleaner cleaner 23058 342694 0 0 3 0x14200 reaper reaper 46678 195260 0 0 3 0x14200 pgdaemon pagedaemon 22436 466627 0 0 3 0x14200 bored viomb 81709 327936 0 0 3 0x40014200 acpi0 acpi0 15452 489284 0 0 3 0x40014200 idle1 26016 9219 0 0 3 0x14200 bored softnet3 34054 260997 0 0 3 0x14200 bored softnet2 13365 449125 0 0 3 0x14200 bored softnet1 64957 8020 0 0 3 0x14200 bored softnet0 70016 215219 0 0 3 0x14200 bored systqmp 74406 25907 0 0 3 0x14200 bored systq 35857 161847 0 0 3 0x14200 tmoslp softclockmp 94304 370189 0 0 2 0x40014200 softclock 35127 344510 0 0 3 0x40014200 idle0 1 299874 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 40491 (ifconfig) thread 0xffff8000ffff0f58 (186896) exclusive rwlock netlock r = 0 (0xffffffff83499160) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #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 (0xffffffff8356fdc8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #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 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10199 11119K 11448K 166960K 13439 0 pcb 17 16K 17K 166960K 378 0 rtable 178 7K 8K 166960K 1150 0 pf 38 18K 26K 166960K 150 0 ifaddr 36 6K 7K 166960K 151 0 ifgroup 52 2K 2K 166960K 186 0 sysctl 4 1K 2K 166960K 7 0 counters 62 36K 37K 166960K 146 0 ioctlops 0 0K 4K 166960K 1757 0 iov 0 0K 28K 166960K 150 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1433 90K 90K 166960K 2777 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 24 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 69 0 dirhash 12 2K 2K 166960K 42 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 13 45K 97K 166960K 1926 0 sigio 0 0K 0K 166960K 64 0 proc 70 91K 140K 166960K 1230 0 subproc 104 6K 7K 166960K 364 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 220 0 in_multi 67 5K 6K 166960K 346 0 ether_multi 1 0K 0K 166960K 9 0 mrt 1 0K 0K 166960K 6 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 103 466K 466K 166960K 103 0 exec 0 0K 1K 166960K 845 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 176 71K 87K 166960K 18930 0 UVM aobj 42 4K 4K 166960K 49 0 pinsyscall 37 74K 111K 166960K 3544 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 166 0 NDP 15 0K 1K 166960K 108 0 temp 75 6824K 7066K 166960K 77129 0 kqueue 13 20K 30K 166960K 292 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 120 189 0 186 1 0 1 1 0 8 0 rtentry 112 359 0 283 3 0 3 3 0 8 0 unpcb 144 1594 0 1577 11 7 4 8 0 8 3 syncache 336 15 0 15 5 5 0 1 0 8 0 tcpqe 32 10 0 10 4 4 0 1 0 8 0 tcpcb 808 584 0 576 15 11 4 8 0 8 2 arp 120 61 0 45 1 0 1 1 0 8 0 inpcb 336 2348 0 2335 23 18 5 13 0 8 3 nd6 136 91 0 74 1 0 1 1 0 8 0 pkpcb 40 39 0 39 4 4 0 1 0 8 0 kcovpl 48 28 0 20 1 0 1 1 0 8 0 ppxss 1168 17 0 17 4 3 1 1 0 8 1 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 20 0 16 1 0 1 1 0 482 0 pffrnode 88 18 0 14 1 0 1 1 0 8 0 pffrent 40 121 0 117 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 pfstitem 24 147 0 88 1 0 1 1 0 8 0 pfstkey 128 152 0 93 4 0 4 4 0 8 0 pfstate 376 149 0 91 10 0 10 10 0 8 0 pfrule 1344 28 0 19 2 0 2 2 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 1473 0 1149 31 6 25 27 0 8 0 art_table 32 1475 0 1149 4 0 4 4 0 8 0 art_node 16 352 0 288 1 0 1 1 0 8 0 sysvmsgpl 40 12 0 7 1 0 1 1 0 8 0 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 112 62 0 52 1 0 1 1 0 8 0 shmpl 112 46 0 7 2 0 2 2 0 8 0 dirhash 1024 37 0 20 3 0 3 3 0 8 0 dino2pl 256 4400 0 2861 97 0 97 97 0 8 0 ffsino 272 4400 0 2861 103 0 103 103 0 8 0 nchpl 144 6870 0 6306 64 34 30 64 0 8 5 uvmvnodes 80 5422 0 0 111 0 111 111 0 8 0 vnodes 216 5422 0 0 302 0 302 302 0 8 0 namei 1024 25696 0 25696 2 1 1 2 0 8 1 percpumem 16 87 0 42 1 0 1 1 0 8 0 pfiaddrpl 120 3 0 1 1 0 1 1 0 8 0 kstatmem 264 106 0 84 3 0 3 3 0 8 0 scsiplug 72 9 0 9 3 3 0 1 0 8 0 scxspl 216 30266 0 30266 14 12 2 8 1 8 2 plimitpl 152 536 0 520 1 0 1 1 0 8 0 sigapl 424 2214 0 2167 7 0 7 7 0 8 0 futexpl 64 25816 0 25816 1 1 0 1 0 8 0 knotepl 120 609 0 0 18 0 18 18 0 8 0 kqueuepl 216 629 0 620 7 3 4 7 0 8 3 pipepl 320 513 0 486 8 5 3 6 0 8 0 fdescpl 496 2191 0 2164 6 1 5 6 0 8 1 filepl 152 14585 0 14348 35 20 15 24 0 8 4 lockfpl 104 1115 0 1113 3 2 1 2 0 8 0 lockfspl 48 383 0 381 1 0 1 1 0 8 0 sessionpl 144 54 0 46 1 0 1 1 0 8 0 pgrppl 48 195 0 179 1 0 1 1 0 8 0 ucredpl 104 2026 0 2013 1 0 1 1 0 8 0 zombiepl 144 2168 0 2167 1 0 1 1 0 8 0 processpl 1160 2214 0 2167 5 1 4 5 0 8 0 procpl 648 4849 0 4802 8 2 6 7 0 8 0 srpgc 96 6 0 6 2 2 0 1 0 8 0 sosppl 168 4 0 4 2 2 0 1 0 8 0 sockpl 664 4264 0 4232 39 28 11 20 0 8 6 mcl64k 65536 6 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 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 8 0 0 1 0 1 1 0 8 0 mcl4k 4096 132 0 0 17 0 17 17 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 45 0 0 5 0 5 5 0 8 0 mtagpl 96 23 0 0 1 0 1 1 0 8 0 mbufpl 256 358 0 0 20 0 20 20 0 8 0 bufpl 280 10593 0 4419 442 0 442 442 0 8 0 anonpl 24 353003 0 349826 104 61 43 77 0 185 8 amapchunkpl 152 62361 0 62047 41 14 27 33 0 158 7 amappl16 200 8319 0 8310 73 64 9 27 0 8 4 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 176 0 165 1 0 1 1 0 8 0 amappl13 176 5 0 5 1 1 0 1 0 8 0 amappl12 168 3149 0 3121 3 1 2 2 0 8 0 amappl11 160 65 0 51 1 0 1 1 0 8 0 amappl10 152 11 0 11 1 1 0 1 0 8 0 amappl9 144 143 0 141 1 0 1 1 0 8 0 amappl8 136 23 0 20 1 0 1 1 0 8 0 amappl7 128 156 0 144 1 0 1 1 0 8 0 amappl6 120 343 0 339 1 0 1 1 0 8 0 amappl5 112 216 0 202 1 0 1 1 0 8 0 amappl4 104 418 0 399 1 0 1 1 0 8 0 amappl3 96 12832 0 12764 4 0 4 4 0 8 0 amappl2 88 1060 0 990 2 0 2 2 0 8 0 amappl1 80 16312 0 15781 17 3 14 15 0 8 0 amappl 88 18191 0 18073 5 0 5 5 0 92 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma8192 8192 1 0 1 1 1 0 1 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 8 0 8 2 2 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 48 0 7 1 0 1 1 0 8 0 uaddrrnd 24 2191 0 2164 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2191 0 2164 1 0 1 1 0 8 0 vmmpekpl 168 19096 0 19040 4 0 4 4 0 8 0 vmmpepl 168 141709 0 140218 119 30 89 107 0 357 4 vmsppl 440 2190 0 2164 6 2 4 5 0 8 0 rwobjpl 56 46231 0 39925 94 4 90 90 0 8 0 pdppl 4096 4389 0 4328 131 60 71 87 0 8 10 pvpl 32 31501 0 0 254 0 254 254 0 265 0 pmappl 248 2190 0 2164 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 467 0 109 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(ffffffff830e57db) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff8309a5aa,ffffffff830119a0,436,ffffffff830089af) at __assert+0x29 rtrequest(1,ffff80002a141c48,4,ffff80002a141cf0,0) at rtrequest+0xdce sys/net/route.c:1078 rt_ifa_add(ffff800001286e00,840100,ffff800001286e58,0) at rt_ifa_add+0x22e sys/net/route.c:1273 in_ifinit(ffff8000012bb800,ffff800001286e00,ffff80002a141f60,1) at in_ifinit+0x4bd in_insert_prefix sys/netinet/in.c:770 [inline] in_ifinit(ffff8000012bb800,ffff800001286e00,ffff80002a141f60,1) at in_ifinit+0x4bd sys/netinet/in.c:703 in_ioctl_change_ifaddr(8040691a,ffff80002a141f50,ffff8000012bb800) at in_ioctl_change_ifaddr+0x92c sys/netinet/in.c:504 ifioctl(ffff800010fd1268,8040691a,ffff80002a141f50,ffff8000ffff0f58) at ifioctl+0x1571 pru_control sys/sys/protosw.h:355 [inline] ifioctl(ffff800010fd1268,8040691a,ffff80002a141f50,ffff8000ffff0f58) at ifioctl+0x1571 sys/net/if.c:2449 sys_ioctl(ffff8000ffff0f58,ffff80002a142130,ffff80002a142080) at sys_ioctl+0x67c syscall(ffff80002a142130) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a142130) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x77444afe7420, 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(ffffffff8356fbc0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8356fbc0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 vn_write(fffffd806f7c6ab0,ffff80002a06a4b0,0) at vn_write+0x4e sys/kern/vfs_vnops.c:393 dofilewritev(ffff8000ffffd6d8,e,ffff80002a06a4b0,0,ffff80002a06a570) at dofilewritev+0x23c sys/kern/sys_generic.c:380 sys_writev(ffff8000ffffd6d8,ffff80002a06a620,ffff80002a06a570) at sys_writev+0xd8 sys/kern/sys_generic.c:327 syscall(ffff80002a06a620) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a06a620) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c6a8b4be740, count: 6 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(ffffffff8356fbc0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8356fbc0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 vn_write(fffffd806f7c6ab0,ffff80002a06a4b0,0) at vn_write+0x4e sys/kern/vfs_vnops.c:393 dofilewritev(ffff8000ffffd6d8,e,ffff80002a06a4b0,0,ffff80002a06a570) at dofilewritev+0x23c sys/kern/sys_generic.c:380 sys_writev(ffff8000ffffd6d8,ffff80002a06a620,ffff80002a06a570) at sys_writev+0xd8 sys/kern/sys_generic.c:327 syscall(ffff80002a06a620) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a06a620) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c6a8b4be740, count: -9