kernel: integer divide fault trap, code=0 Stopped at pf_get_transaddr+0x298: idivl %r13d,%eax ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic the kernel did not panic ddb{1}> trace pf_get_transaddr(ffff800000aaba78,ffff800023f9cd00,ffff800023f9cbb8,ffff800023f9cbe0) at pf_get_transaddr+0x298 sys/net/pf_lb.c:689 pf_test_rule(ffff800023f9cd00,ffff800023f9cdf0,ffff800023f9ce00,ffff800023f9cde0,ffff800023f9cdc8,3) at pf_test_rule+0x495 sys/net/pf.c:3822 pf_test(2,1,ffff800000ac6000,ffff800023f9cf18) at pf_test+0x19fc sys/net/pf.c:6993 ip_input_if(ffff800023f9cf18,ffff800023f9cf24,4,0,ffff800000ac6000) at ip_input_if+0x59e sys/netinet/ip_input.c:316 ipv4_input(ffff800000ac6000,fffffd80685e8200) at ipv4_input+0x48 sys/netinet/ip_input.c:215 ether_input(ffff800000ac6000,fffffd80685e8200,0) at ether_input+0x345 sys/net/if_ethersubr.c:461 if_vinput(ffff800000ac6000,fffffd80685e8200) at if_vinput+0x10d if_ih_input sys/net/if.c:902 [inline] if_vinput(ffff800000ac6000,fffffd80685e8200) at if_vinput+0x10d sys/net/if.c:963 tun_dev_write(5d00,ffff800023f9d2e8,f9,2) at tun_dev_write+0x1fc sys/net/if_tun.c:871 spec_write(ffff800023f9d130) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806e294688,ffff800023f9d2e8,11,fffffd807f7bf9c0) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd80667e3610,ffff800023f9d2e8,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff8000230d7138,f0,ffff800023f9d2e8,0,ffff800023f9d3d0) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff8000230d7138,ffff800023f9d380,ffff800023f9d3d0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800023f9d450) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023f9d450) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfef5580f160, count: -15 ddb{1}> show registers rdi 0xffffffff81390df5 pf_get_transaddr+0x275 rsi 0x65e rbp 0xffff800023f9cb50 rbx 0 rdx 0 rcx 0xffff __ALIGN_SIZE+0xefff rax 0x45 r8 0xffffffff81ce40a4 pf_insert_src_node+0x2e4 r9 0x1 r10 0x2 r11 0x9d9cbe9a2a1934fd r12 0x45 r13 0 r14 0xffff800023f9cd00 r15 0xffff800000aaba78 rip 0xffffffff81390e18 pf_get_transaddr+0x298 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800023f9cae0 ss 0x10 pf_get_transaddr+0x298: idivl %r13d,%eax ddb{1}> show proc PROC (syz-executor.0) pid=213978 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000230d6508,0xffffffff8291cb18 process=0xffff8000230fa7f8 user=0xffff800023f98000, vmspace=0xfffffd8063ec9b90 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 86998 127019 26998 0 7 0 syz-executor.0 *86998 213978 26998 0 7 0x4000000 syz-executor.0 83200 164913 96735 0 3 0x2 biowait syz-executor.1 7889 458351 0 0 3 0x14200 bored sosplice 60148 28053 0 0 3 0x14280 nfsidl nfsio 20582 18629 0 0 3 0x14280 nfsidl nfsio 42180 72210 0 0 3 0x14280 nfsidl nfsio 13944 287745 0 0 3 0x14280 nfsidl nfsio 1107 409178 0 0 3 0x14280 nfsidl nfsio 51154 226909 0 0 3 0x14280 nfsidl nfsio 62669 5519 0 0 3 0x14280 nfsidl nfsio 36198 311432 0 0 3 0x14280 nfsidl nfsio 37920 303322 0 0 3 0x14280 nfsidl nfsio 97408 339524 0 0 3 0x14280 nfsidl nfsio 61758 225928 0 0 3 0x14280 nfsidl nfsio 41672 272598 0 0 3 0x14280 nfsidl nfsio 4641 249884 0 0 3 0x14280 nfsidl nfsio 95434 359395 0 0 3 0x14280 nfsidl nfsio 67558 474987 0 0 3 0x14280 nfsidl nfsio 82920 306107 0 0 3 0x14280 nfsidl nfsio 8539 240171 0 0 3 0x14280 nfsidl nfsio 15649 200724 0 0 3 0x14280 nfsidl nfsio 33119 385034 0 0 3 0x14280 nfsidl nfsio 74437 34583 0 0 3 0x14280 nfsidl nfsio 26998 18368 96735 0 3 0x82 nanosleep syz-executor.0 96735 22256 7025 0 3 0x82 kqread syz-fuzzer 96735 430877 7025 0 3 0x4000082 nanosleep syz-fuzzer 96735 442694 7025 0 3 0x4000082 thrsleep syz-fuzzer 96735 471476 7025 0 3 0x4000082 nanosleep syz-fuzzer 96735 202930 7025 0 3 0x4000082 thrsleep syz-fuzzer 96735 309899 7025 0 3 0x4000082 thrsleep syz-fuzzer 96735 39899 7025 0 3 0x4000082 thrsleep syz-fuzzer 96735 280018 7025 0 3 0x4000082 thrsleep syz-fuzzer 96735 12764 7025 0 3 0x4000082 thrsleep syz-fuzzer 96735 437801 7025 0 3 0x4000082 thrsleep syz-fuzzer 7025 489734 31203 0 3 0x10008a pause ksh 31203 168476 92261 0 3 0x92 select sshd 22037 292221 1 0 3 0x100083 ttyin getty 92261 397745 1 0 3 0x80 select sshd 57499 472298 75872 74 3 0x100092 bpf pflogd 75872 247861 1 0 3 0x80 netio pflogd 29349 372995 49907 73 3 0x100090 kqread syslogd 49907 29930 1 0 3 0x100082 netio syslogd 28650 312464 1 77 3 0x100090 poll dhclient 51974 291038 1 0 3 0x80 poll dhclient 97418 316212 0 0 3 0x14200 bored smr 2653 410361 0 0 2 0x14200 zerothread 69523 294202 0 0 3 0x14200 aiodoned aiodoned 86767 400060 0 0 3 0x14200 syncer update 48300 68219 0 0 3 0x14200 cleaner cleaner 69229 253948 0 0 3 0x14200 reaper reaper 67537 252962 0 0 3 0x14200 pgdaemon pagedaemon 99282 497820 0 0 3 0x14200 bored crynlk 66710 258437 0 0 3 0x14200 bored crypto 63934 262608 0 0 3 0x40014200 acpi0 acpi0 5523 81800 0 0 3 0x40014200 idle1 42103 499794 0 0 3 0x14200 bored softnet 61650 410914 0 0 3 0x14200 bored systqmp 92781 248063 0 0 3 0x14200 bored systq 35057 187714 0 0 3 0x40014200 bored softclock 22417 116963 0 0 3 0x40014200 idle0 1 76700 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 86998 (syz-executor.0) thread 0xffff8000230d7138 (213978) exclusive rwlock netlock r = 0 (0xffffffff82746ee8) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 tun_dev_write+0x1f1 sys/net/if_tun.c:870 #2 spec_write+0xd4 sys/kern/spec_vnops.c:309 #3 VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 #4 vn_write+0x14e sys/kern/vfs_vnops.c:414 #5 dofilewritev+0x1b6 sys/kern/sys_generic.c:365 #6 sys_write+0x83 sys/kern/sys_generic.c:285 #7 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #7 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #8 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828fbd80) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 vn_write+0x42 sys/kern/vfs_vnops.c:399 #2 dofilewritev+0x1b6 sys/kern/sys_generic.c:365 #3 sys_write+0x83 sys/kern/sys_generic.c:285 #4 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #4 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #5 Xsyscall+0x128 Process 83200 (syz-executor.1) thread 0xffff800020e0aae8 (164913) exclusive rrwlock inode r = 0 (0xfffffd806863be70) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 rw_enter+0x453 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 ufs_ihashins+0x45 sys/ufs/ufs/ufs_ihash.c:140 #4 ffs_vget+0x13e sys/ufs/ffs/ffs_vfsops.c:1358 #5 ffs_inode_alloc+0x1e2 sys/ufs/ffs/ffs_alloc.c:394 #6 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162 #7 VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:450 #8 domkdirat+0x121 sys/kern/vfs_syscalls.c:3051 #9 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #9 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #10 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806863b3d0) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 rw_enter+0x453 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603 #4 vn_lock+0x81 sys/kern/vfs_vnops.c:575 #5 vfs_lookup+0xe6 sys/kern/vfs_lookup.c:419 #6 namei+0x63c sys/kern/vfs_lookup.c:249 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3036 #8 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9534 6548K 7126K 78643K 12077 0 pcb 13 8K 8K 78643K 73 0 rtable 103 7K 7K 78643K 1062 0 ifaddr 78 15K 15K 78643K 142 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 63 0 ioctlops 0 0K 4K 78643K 1519 0 iov 0 0K 32K 78643K 340 0 mount 1 1K 1K 78643K 1 0 vnodes 1218 77K 77K 78643K 1611 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 9 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 97 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 545 0 sigio 0 0K 0K 78643K 4 0 proc 61 63K 95K 78643K 521 0 subproc 32 2K 2K 78643K 51 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 28 0 in_multi 29 1K 2K 78643K 107 0 ether_multi 1 0K 0K 78643K 10 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 37 175K 175K 78643K 37 0 exec 0 0K 1K 78643K 249 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 139 104K 106K 78643K 2700 0 UVM aobj 17 4K 4K 78643K 22 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 41 0 NDP 13 0K 0K 78643K 36 0 temp 111 3862K 3948K 78643K 11464 0 kqueue 3 4K 9K 78643K 27 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 13 0 7 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 35 0 33 1 0 1 1 0 8 0 rtentry 112 404 0 371 2 0 2 2 0 8 0 unpcb 120 185 0 175 1 0 1 1 0 8 0 syncache 264 7 0 7 3 2 1 1 0 8 1 tcpqe 32 495 0 495 2 2 0 1 0 8 0 tcpcb 544 120 0 114 1 0 1 1 0 8 0 inpcb 296 629 0 620 3 1 2 2 0 8 1 rttmr 72 1 0 1 1 0 1 1 0 8 1 nd6 48 17 0 13 1 0 1 1 0 8 0 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 18 0 9 1 0 1 1 0 8 0 pfstitem 24 55 0 23 1 0 1 1 0 8 0 pfstkey 112 55 0 23 2 0 2 2 0 8 0 pfstate 328 55 0 23 4 0 4 4 0 8 0 pfsrctr 152 1 0 0 1 0 1 1 0 8 0 pfrule 1360 31 0 18 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1181 0 1007 15 3 12 13 0 8 0 art_table 32 1182 0 1007 2 0 2 2 0 8 0 art_node 16 403 0 375 1 0 1 1 0 8 0 sysvmsgpl 40 45 0 17 1 0 1 1 0 8 0 semapl 112 95 0 85 1 0 1 1 0 8 0 shmpl 112 19 0 5 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2051 0 648 89 0 89 89 0 8 0 ffsino 272 2051 0 648 95 1 94 94 0 8 0 nchpl 144 3048 0 1453 60 0 60 60 0 8 0 uvmvnodes 72 2430 0 0 45 0 45 45 0 8 0 vnodes 208 2430 0 0 128 0 128 128 0 8 0 namei 1024 8736 0 8735 2 1 1 1 0 8 0 percpumem 16 42 0 10 1 0 1 1 0 8 0 vcpupl 1984 9 0 0 2 0 2 2 0 8 0 vmpool 560 9 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 16 0 6 1 0 1 1 0 8 0 scxspl 192 8480 0 8479 8 7 1 7 0 8 0 plimitpl 152 53 0 45 1 0 1 1 0 8 0 sigapl 424 778 0 726 6 0 6 6 0 8 0 futexpl 56 8076 0 8076 1 0 1 1 0 8 1 knotepl 112 100 0 81 1 0 1 1 0 8 0 kqueuepl 144 47 0 45 1 0 1 1 0 8 0 pipepl 304 149 0 139 3 1 2 2 0 8 1 fdescpl 496 742 0 726 3 0 3 3 0 8 0 filepl 152 4265 0 4165 6 1 5 5 0 8 1 lockfpl 104 61 0 60 1 0 1 1 0 8 0 lockfspl 48 22 0 21 1 0 1 1 0 8 0 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 21 0 10 1 0 1 1 0 8 0 ucredpl 96 469 0 460 1 0 1 1 0 8 0 zombiepl 144 726 0 726 2 1 1 1 0 8 1 processpl 992 778 0 726 8 1 7 7 0 8 0 procpl 624 1866 0 1804 6 0 6 6 0 8 0 sosppl 128 10 0 10 3 3 0 1 0 8 0 sockpl 400 852 0 831 5 1 4 4 0 8 1 mcl64k 65536 10 0 0 2 0 2 2 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 6 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 6 0 0 1 0 1 1 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 200 0 0 24 0 24 24 0 8 0 mtagpl 96 171 0 0 5 0 5 5 0 8 0 mbufpl 256 805 0 0 49 0 49 49 0 8 0 bufpl 280 4090 0 132 283 0 283 283 0 8 0 anonpl 16 78171 0 62160 79 6 73 78 0 124 4 amapchunkpl 152 4052 0 3893 13 1 12 12 0 158 4 amappl16 192 3061 0 2147 54 6 48 53 0 8 2 amappl15 184 269 0 266 1 0 1 1 0 8 0 amappl14 176 26 0 20 1 0 1 1 0 8 0 amappl13 168 35 0 32 1 0 1 1 0 8 0 amappl12 160 8 0 6 1 0 1 1 0 8 0 amappl11 152 60 0 45 1 0 1 1 0 8 0 amappl10 144 291 0 284 1 0 1 1 0 8 0 amappl9 136 553 0 552 1 0 1 1 0 8 0 amappl8 128 378 0 345 3 1 2 2 0 8 0 amappl7 120 403 0 386 1 0 1 1 0 8 0 amappl6 112 27 0 24 1 0 1 1 0 8 0 amappl5 104 695 0 679 1 0 1 1 0 8 0 amappl4 96 510 0 479 1 0 1 1 0 8 0 amappl3 88 124 0 118 1 0 1 1 0 8 0 amappl2 80 4924 0 4855 2 0 2 2 0 8 0 amappl1 72 25738 0 25298 23 13 10 18 0 8 0 amappl 80 2129 0 2079 2 0 2 2 0 84 0 dma4096 4096 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 64 21 0 5 1 0 1 1 0 8 0 uaddrrnd 24 751 0 726 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 751 0 726 1 0 1 1 0 8 0 vmmpekpl 168 9853 0 9815 2 0 2 2 0 8 0 vmmpepl 168 96385 0 94297 153 26 127 127 0 357 30 vmsppl 368 750 0 726 3 0 3 3 0 8 0 pdppl 4096 1509 0 1461 8 1 7 7 0 8 0 pvpl 32 252213 0 232949 189 7 182 187 0 265 18 pmappl 232 750 0 726 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 311 0 10 9 0 9 9 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff8278fff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __sanitizer_cov_trace_cmp4(b2992,b2993) at __sanitizer_cov_trace_cmp4+0x3d kd_curproc sys/dev/kcov.c:411 [inline] __sanitizer_cov_trace_cmp4(b2992,b2993) at __sanitizer_cov_trace_cmp4+0x3d trace_cmp sys/dev/kcov.c:104 [inline] __sanitizer_cov_trace_cmp4(b2992,b2993) at __sanitizer_cov_trace_cmp4+0x3d sys/dev/kcov.c:135 __mp_lock(ffffffff828fbb78) at __mp_lock+0x139 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828fbb78) at __mp_lock+0x139 sys/kern/kern_lock.c:147 intr_handler(ffff8000230e9490,ffff80000004a400) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge17_untramp() at Xintr_ioapic_edge17_untramp+0x19f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x54 sys/dev/kcov.c:88 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc1b30, count: -9 ddb{0}> machine ddbcpu 1 Stopped at pf_get_transaddr+0x298: idivl %r13d,%eax ddb{1}> trace pf_get_transaddr(ffff800000aaba78,ffff800023f9cd00,ffff800023f9cbb8,ffff800023f9cbe0) at pf_get_transaddr+0x298 sys/net/pf_lb.c:689 pf_test_rule(ffff800023f9cd00,ffff800023f9cdf0,ffff800023f9ce00,ffff800023f9cde0,ffff800023f9cdc8,3) at pf_test_rule+0x495 sys/net/pf.c:3822 pf_test(2,1,ffff800000ac6000,ffff800023f9cf18) at pf_test+0x19fc sys/net/pf.c:6993 ip_input_if(ffff800023f9cf18,ffff800023f9cf24,4,0,ffff800000ac6000) at ip_input_if+0x59e sys/netinet/ip_input.c:316 ipv4_input(ffff800000ac6000,fffffd80685e8200) at ipv4_input+0x48 sys/netinet/ip_input.c:215 ether_input(ffff800000ac6000,fffffd80685e8200,0) at ether_input+0x345 sys/net/if_ethersubr.c:461 if_vinput(ffff800000ac6000,fffffd80685e8200) at if_vinput+0x10d if_ih_input sys/net/if.c:902 [inline] if_vinput(ffff800000ac6000,fffffd80685e8200) at if_vinput+0x10d sys/net/if.c:963 tun_dev_write(5d00,ffff800023f9d2e8,f9,2) at tun_dev_write+0x1fc sys/net/if_tun.c:871 spec_write(ffff800023f9d130) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806e294688,ffff800023f9d2e8,11,fffffd807f7bf9c0) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd80667e3610,ffff800023f9d2e8,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff8000230d7138,f0,ffff800023f9d2e8,0,ffff800023f9d3d0) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff8000230d7138,ffff800023f9d380,ffff800023f9d3d0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800023f9d450) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023f9d450) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfef5580f160, count: -15