kernel: protection fault trap, code=0 Stopped at sys_semop+0x352: movzwl 0x8(%rbx),%r15d ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace sys_semop(ffff80002a2b6550,ffff80003c445b40,ffff80003c445a90) at sys_semop+0x352 sys/kern/sysv_sem.c:622 syscall(ffff80003c445b40) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c445b40) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6e77b7ad050, count: -3 ddb{0}> show registers rdi 0 rsi 0xb rbp 0xffff80003c445a60 rbx 0xdeadbeefdeadbeef rdx 0 rcx 0xffff80002a2b6550 rax 0xffffffff83822ff0 cpu_info_full_primary+0x1ff0 r8 0x7f7fffffc000 r9 0 r10 0x1d5234387642dbf4 r11 0x7fc42f019a2df899 r12 0xb r13 0xfffffd806b604a80 r14 0xffff80003c445b40 r15 0xb rip 0xffffffff8327fc92 sys_semop+0x352 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c445970 ss 0x10 sys_semop+0x352: movzwl 0x8(%rbx),%r15d ddb{0}> show proc PROC (syz-executor) tid=221523 pid=20336 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=86, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a2b7248,0xffff80002a2b6a90 process=0xffff80003ac261d0 user=0xffff80003c440000, vmspace=0xfffffd806b9bd018 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 20336 228353 89877 0 2 0 syz-executor *20336 221523 89877 0 7 0x4000000 syz-executor 20336 147433 89877 0 2 0x4000000 syz-executor 20336 205856 89877 0 3 0x4000080 fsleep syz-executor 61711 427910 32213 0 2 0xc80 syz-executor 61711 3880 32213 0 3 0x4000080 ttyretype syz-executor 61711 1985 32213 0 3 0x4000080 fsleep syz-executor 1722 174125 72047 0 3 0x3000 suspend syz-executor 1722 117825 72047 0 2 0x4081000 syz-executor 1722 286303 72047 0 3 0x4081000 inode syz-executor 1722 115985 72047 0 3 0x4081000 inode syz-executor 22317 451565 89613 0 3 0x80 nanoslp syz-executor 22317 181884 89613 0 3 0x4000080 msgwait syz-executor 22317 478249 89613 0 3 0x4000080 fsleep syz-executor 4943 462861 0 0 3 0x14280 nfsidl nfsio 63441 378030 0 0 3 0x14280 nfsidl nfsio 99917 514053 0 0 3 0x14280 nfsidl nfsio 9366 10953 0 0 3 0x14280 nfsidl nfsio 87834 176900 0 0 3 0x14280 nfsidl nfsio 30869 154431 0 0 3 0x14280 nfsidl nfsio 69268 66977 0 0 3 0x14280 nfsidl nfsio 4981 413400 0 0 3 0x14280 nfsidl nfsio 14549 183777 0 0 3 0x14280 nfsidl nfsio 22008 385073 0 0 3 0x14280 nfsidl nfsio 8271 151772 0 0 3 0x14280 nfsidl nfsio 91282 252694 0 0 3 0x14280 nfsidl nfsio 74987 521445 0 0 3 0x14280 nfsidl nfsio 35066 512703 0 0 3 0x14280 nfsidl nfsio 46382 172001 0 0 3 0x14280 nfsidl nfsio 70766 360303 0 0 3 0x14280 nfsidl nfsio 8310 86967 0 0 3 0x14280 nfsidl nfsio 44492 20411 0 0 3 0x14280 nfsidl nfsio 42632 26287 0 0 3 0x14280 nfsidl nfsio 79242 324290 0 0 3 0x14280 nfsidl nfsio 97993 290449 19212 0 3 0x3000 suspend syz-executor 97993 329483 19212 0 7 0x4081000 syz-executor 49915 244561 0 0 3 0x14200 bored sosplice 19212 375299 13798 0 3 0x82 nanoslp syz-executor 72047 85714 13798 0 3 0x82 nanoslp syz-executor 73278 516977 13798 0 3 0x82 nanoslp syz-executor 89877 325865 13798 0 3 0x82 nanoslp syz-executor 89613 41930 13798 0 2 0xc82 syz-executor 32213 34750 13798 0 2 0xc82 syz-executor 99062 66084 13798 0 3 0x82 wait syz-executor 85087 218751 13798 0 2 0xc82 syz-executor 13798 198896 7589 0 3 0x82 kqread syz-executor 7589 52609 85178 0 3 0x10008a sigsusp ksh 85178 516499 53592 0 3 0x98 kqread sshd-session 53592 489095 2253 0 3 0x92 kqread sshd-session 7837 307997 1 0 3 0x100083 ttyin getty 2253 427996 1 0 3 0x88 kqread sshd 63826 329336 6382 74 3 0x1100092 bpf pflogd 6382 154280 1 0 3 0x80 sbwait pflogd 95409 472316 90340 73 3 0x1100090 kqread syslogd 90340 37651 1 0 3 0x100082 sbwait syslogd 11100 522438 1 0 3 0x100080 kqread resolvd 69537 79729 89809 77 3 0x100092 kqread dhcpleased 63966 401943 89809 77 3 0x100092 kqread dhcpleased 89809 365153 1 0 3 0x80 kqread dhcpleased 52267 248662 0 0 3 0x14200 bored smr 87393 240446 0 0 3 0x14200 pgzero zerothread 97822 442500 0 0 3 0x14200 aiodoned aiodoned 51240 319114 0 0 3 0x14200 syncer update 84483 202130 0 0 3 0x14200 cleaner cleaner 37994 275007 0 0 3 0x14200 reaper reaper 97252 330494 0 0 3 0x14200 pgdaemon pagedaemon 6749 280608 0 0 3 0x14200 bored viomb 21573 479936 0 0 3 0x40014200 acpi0 acpi0 8312 322402 0 0 3 0x40014200 idle1 14896 348731 0 0 3 0x14200 bored softnet7 48621 288143 0 0 3 0x14200 bored softnet6 41875 168309 0 0 3 0x14200 bored softnet5 11840 452198 0 0 3 0x14200 bored softnet4 91194 352282 0 0 3 0x14200 bored softnet3 6077 84876 0 0 3 0x14200 bored softnet2 11493 407698 0 0 3 0x14200 bored softnet1 43146 403619 0 0 3 0x14200 bored softnet0 5641 397683 0 0 3 0x14200 bored systqmp 85933 357262 0 0 3 0x14200 bored systq 38443 234649 0 0 3 0x14200 tmoslp softclockmp 83821 117227 0 0 3 0x40014200 tmoslp softclock 95933 257230 0 0 3 0x40014200 idle0 1 177544 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 20336 (syz-executor) thread 0xffff80002a2b6550 (221523) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83918c68) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 #2 malloc+0xe3 sys/kern/kern_malloc.c:174 #3 sys_semop+0x22f sys/kern/sysv_sem.c:-1 #4 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #4 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #5 Xsyscall+0x128 Process 20336 (syz-executor) thread 0xffff80002a2b6a80 (147433) exclusive rwlock fdlock r = 0 (0xffff80002a2c30f0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 doopenat+0x18e sys/kern/vfs_syscalls.c:1105 #3 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #3 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 #4 Xsyscall+0x128 Process 1722 (syz-executor) thread 0xffff80003c4814f8 (117825) exclusive rrwlock inode r = 0 (0xfffffd806e1a4dc8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vn_write+0x18f sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x242 sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 #9 Xsyscall+0x128 Process 1722 (syz-executor) thread 0xffff80002a2b7a10 (286303) exclusive rrwlock inode r = 0 (0xfffffd806f574d80) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 dorenameat+0x144 sys/kern/vfs_syscalls.c:3004 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #9 Xsyscall+0x128 Process 97993 (syz-executor) thread 0xffff80003c4acfc0 (329483) exclusive rrwlock inode r = 0 (0xfffffd806b5f88f8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vn_write+0x18f sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x242 sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10211 11039K 11177K 166960K 11618 0 pcb 17 13K 14K 166960K 111 0 rtable 183 7K 7K 166960K 320 0 pf 37 18K 81K 166960K 227 0 ifaddr 42 7K 8K 166960K 72 0 ifgroup 55 2K 2K 166960K 101 0 sysctl 1 1K 9K 166960K 6 0 counters 70 37K 37K 166960K 132 0 ioctlops 0 0K 4K 166960K 1546 0 iov 0 0K 16K 166960K 50 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1354 85K 86K 166960K 1568 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 7 0K 0K 166960K 78 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 89K 166960K 376 0 sigio 0 0K 0K 166960K 10 0 proc 72 115K 164K 166960K 569 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 4 0K 0K 166960K 29 0 in_multi 85 6K 7K 166960K 120 0 ether_multi 1 0K 0K 166960K 5 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 576 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 254 152K 166K 166960K 5334 0 UVM aobj 6 3K 3K 166960K 6 0 pinsyscall 43 86K 108K 166960K 1504 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 11 0 NDP 13 0K 2K 166960K 47 0 temp 53 8645K 8711K 166960K 14404 0 kqueue 16 22K 30K 166960K 81 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 57 0 54 1 0 1 1 0 8 0 rtentry 176 107 0 31 5 0 5 5 0 8 0 unpcb 144 323 0 303 6 5 1 6 0 8 0 syncache 336 7 0 7 2 1 1 1 0 8 1 tcpqe 32 3 0 3 2 1 1 1 0 8 1 tcpcb 736 77 0 68 3 1 2 2 0 8 0 arp 128 13 0 1 1 0 1 1 0 8 0 inpcb 328 312 0 298 5 1 4 4 0 8 2 nd6 144 16 0 3 1 0 1 1 0 8 0 pkpcb 40 3 0 3 2 1 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 29 0 27 2 1 1 1 0 8 0 pppxif 1504 2 0 2 1 1 0 1 0 8 0 pfstscr 40 1 0 1 1 0 1 1 0 8 1 pffrag 232 4 0 0 1 0 1 1 0 482 0 pffrnode 88 4 0 0 1 0 1 1 0 8 0 pffrent 40 4 0 0 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 1 0 1 1 1 0 1 0 8 0 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pfstitem 24 33 0 2 1 0 1 1 0 8 0 pfstkey 128 35 0 4 2 0 2 2 0 8 1 pfstate 384 33 0 2 4 0 4 4 0 8 0 pfrule 1344 23 0 18 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 480 0 141 30 3 27 30 0 8 2 art_table 40 482 0 141 5 0 5 5 0 8 0 art_node 32 107 0 42 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 5 2 1 1 1 0 8 0 semapl 112 74 0 70 1 0 1 1 0 8 0 shmpl 112 3 0 0 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2048 0 530 96 0 96 96 0 8 0 ffsino 296 2048 0 530 117 0 117 117 0 8 0 nchpl 144 2587 0 886 64 0 64 64 0 8 0 rtmask 32 6 0 6 2 1 1 1 0 8 1 uvmvnodes 80 2241 0 0 46 0 46 46 0 8 0 vnodes 216 2241 0 0 125 0 125 125 0 8 0 namei 1024 8571 0 8568 1 0 1 1 0 8 0 percpumem 16 81 0 31 1 0 1 1 0 8 0 kstatmem 264 64 0 36 3 1 2 3 0 8 0 scxspl 216 10699 0 10699 13 5 8 8 1 8 8 plimitpl 152 59 0 37 1 0 1 1 0 8 0 sigapl 424 712 0 637 9 0 9 9 0 8 0 knotepl 120 535 0 0 17 0 17 17 0 8 0 kqueuepl 224 116 0 106 1 0 1 1 0 8 0 pipepl 344 126 0 99 3 0 3 3 0 8 0 fdescpl 528 669 0 637 3 0 3 3 0 8 0 filepl 160 3413 0 3170 17 6 11 16 0 8 0 lockfpl 104 182 0 178 2 1 1 2 0 8 0 lockfspl 48 45 0 41 1 0 1 1 0 8 0 sessionpl 144 26 0 17 1 0 1 1 0 8 0 pgrppl 48 36 0 19 1 0 1 1 0 8 0 ucredpl 104 359 0 346 1 0 1 1 0 8 0 zombiepl 144 736 0 731 2 1 1 1 0 8 0 processpl 1232 712 0 637 6 0 6 6 0 8 0 procpl 664 1159 0 1073 8 0 8 8 0 8 0 sosppl 168 2 0 2 1 0 1 1 0 8 1 sockpl 752 703 0 666 20 13 7 17 0 8 2 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 129 0 0 17 0 17 17 0 8 0 mcl2k 2048 25 0 0 4 0 4 4 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 185 0 0 12 0 12 12 0 8 0 bufpl 280 4289 0 122 298 0 298 298 0 8 0 anonpl 32 7545 0 0 61 0 61 61 0 246 0 amapchunkpl 152 16715 0 16120 32 6 26 28 0 158 2 amappl16 200 2471 0 2289 24 14 10 15 0 8 0 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 124 0 112 1 0 1 1 0 8 0 amappl13 176 20 0 20 1 1 0 1 0 8 0 amappl12 168 1326 0 1294 3 1 2 2 0 8 0 amappl11 160 49 0 35 1 0 1 1 0 8 0 amappl10 152 3 0 3 1 1 0 1 0 8 0 amappl9 144 251 0 251 1 1 0 1 0 8 0 amappl8 136 23 0 21 1 0 1 1 0 8 0 amappl7 128 115 0 103 1 0 1 1 0 8 0 amappl6 120 187 0 183 1 0 1 1 0 8 0 amappl5 112 134 0 124 1 0 1 1 0 8 0 amappl4 104 316 0 297 1 0 1 1 0 8 0 amappl3 96 2775 0 2668 4 1 3 3 0 8 0 amappl2 88 946 0 865 2 0 2 2 0 8 0 amappl1 80 10213 0 9608 16 1 15 16 0 8 0 amappl 88 4583 0 4400 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 dma256 256 7 0 7 2 1 1 1 0 8 1 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 7 0 7 2 2 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 5 0 0 1 0 1 1 0 8 0 uaddrrnd 24 669 0 637 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 669 0 637 1 0 1 1 0 8 0 vmmpekpl 168 7423 0 7394 2 0 2 2 0 8 0 vmmpepl 168 49985 0 47773 106 8 98 99 0 357 1 vmsppl 488 668 0 637 6 1 5 5 0 8 1 rwobjpl 80 18935 0 15577 70 1 69 69 0 8 0 pdppl 4096 1346 0 1274 106 32 74 86 0 8 2 pvpl 32 15657 0 0 127 0 127 127 0 265 0 pmappl 256 668 0 637 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 287 0 40 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace sys_semop(ffff80002a2b6550,ffff80003c445b40,ffff80003c445a90) at sys_semop+0x352 sys/kern/sysv_sem.c:622 syscall(ffff80003c445b40) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c445b40) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6e77b7ad050, count: -3 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff8000299edff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 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(ffffffff83918a60) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83918a60) at __mp_lock+0x192 sys/kern/kern_lock.c:165 __mp_acquire_count(ffffffff83918a60,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2d8 sys/kern/kern_synch.c:367 biowait(fffffd805e00d230) at biowait+0xc6 sys/kern/vfs_bio.c:1242 bwrite(fffffd805e00d230) at bwrite+0x2e7 sys/kern/vfs_bio.c:754 ffs_write(ffff800039c1d830) at ffs_write+0x810 sys/ufs/ffs/ffs_vnops.c:377 VOP_WRITE(fffffd8060fc1b00,ffff800039c1d9e8,7,fffffd80097fb6e8) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 vn_write(fffffd806b4265f0,ffff800039c1d9e8,0) at vn_write+0x1d3 sys/kern/vfs_vnops.c:408 dofilewritev(ffff80003c4acfc0,4,ffff800039c1d9e8,0,ffff800039c1daa0) at dofilewritev+0x242 sys/kern/sys_generic.c:380 sys_write(ffff80003c4acfc0,ffff800039c1db50,ffff800039c1daa0) at sys_write+0xa2 sys/kern/sys_generic.c:300 syscall(ffff800039c1db50) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800039c1db50) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4eb8af74320, count: -15