uvm_fault(0xfffffd806b535c20, 0x4, 0, 1) -> e kernel: page fault trap, code=0 Stopped at igmp_leavegroup+0xaf: movl 0x4(%rax),%r12d TID PID UID PRFLAGS PFLAGS CPU COMMAND 160542 99885 0 0x1a000002 0x4000001 1 syz-fuzzer igmp_leavegroup(ffff800000e26f00,ffff8000006ac000) at igmp_leavegroup+0xaf sys/netinet/igmp.c:512 in_delmulti(ffff800000e26f00) at in_delmulti+0xd3 sys/netinet/in.c:908 ip_freemoptions(ffff8000006bca60) at ip_freemoptions+0x5d sys/netinet/ip_output.c:1737 in_pcbdetach(fffffd806a9d1938) at in_pcbdetach+0x97 sys/netinet/in_pcb.c:606 udp_detach(ffff800000e52b30) at udp_detach+0x3f sys/netinet/udp_usrreq.c:1139 soclose(ffff800000e52b30,0) at soclose+0x83 pru_detach sys/sys/protosw.h:283 [inline] soclose(ffff800000e52b30,0) at soclose+0x83 sys/kern/uipc_socket.c:411 soo_close(fffffd8079d38dc8,ffff80003352fc70) at soo_close+0x44 fdrop(fffffd8079d38dc8,ffff80003352fc70) at fdrop+0xd5 sys/kern/kern_descrip.c:1274 closef(fffffd8079d38dc8,ffff80003352fc70) at closef+0x120 sys/kern/kern_descrip.c:1258 fdfree(ffff80003352fc70) at fdfree+0xe4 sys/kern/kern_descrip.c:1190 exit1(ffff80003352fc70,0,0,1) at exit1+0x38a sys/kern/kern_exit.c:199 sys_exit(ffff80003352fc70,ffff800036b922b0,ffff800036b92200) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff800036b922b0) at syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline] syscall(ffff800036b922b0) at syscall+0x854 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x713a6a081d90, count: 1 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: uvm_fault(0xfffffd806b535c20, 0x4, 0, 1) -> e ddb{0}> trace igmp_leavegroup(ffff800000e26f00,ffff8000006ac000) at igmp_leavegroup+0xaf sys/netinet/igmp.c:512 in_delmulti(ffff800000e26f00) at in_delmulti+0xd3 sys/netinet/in.c:908 ip_freemoptions(ffff8000006bca60) at ip_freemoptions+0x5d sys/netinet/ip_output.c:1737 in_pcbdetach(fffffd806a9d1938) at in_pcbdetach+0x97 sys/netinet/in_pcb.c:606 udp_detach(ffff800000e52b30) at udp_detach+0x3f sys/netinet/udp_usrreq.c:1139 soclose(ffff800000e52b30,0) at soclose+0x83 pru_detach sys/sys/protosw.h:283 [inline] soclose(ffff800000e52b30,0) at soclose+0x83 sys/kern/uipc_socket.c:411 soo_close(fffffd8079d38dc8,ffff80003352fc70) at soo_close+0x44 fdrop(fffffd8079d38dc8,ffff80003352fc70) at fdrop+0xd5 sys/kern/kern_descrip.c:1274 closef(fffffd8079d38dc8,ffff80003352fc70) at closef+0x120 sys/kern/kern_descrip.c:1258 fdfree(ffff80003352fc70) at fdfree+0xe4 sys/kern/kern_descrip.c:1190 exit1(ffff80003352fc70,0,0,1) at exit1+0x38a sys/kern/kern_exit.c:199 sys_exit(ffff80003352fc70,ffff800036b922b0,ffff800036b92200) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff800036b922b0) at syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline] syscall(ffff800036b922b0) at syscall+0x854 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x713a6a081d90, count: -14 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800036b91e50 rbx 0x3 rdx 0 rcx 0xffff80003352fc70 rax 0 r8 0 r9 0 r10 0x195b6f04f067369 r11 0xd1ca70b6c8a0417 r12 0 r13 0x3 r14 0xffff800000e26f00 r15 0xffff8000006ac000 rip 0xffffffff81613d2f igmp_leavegroup+0xaf cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800036b91e20 ss 0 igmp_leavegroup+0xaf: movl 0x4(%rax),%r12d ddb{0}> show proc PROC (syz-executor.3) tid=387661 pid=55614 tcnt=1 stat=onproc flags process=8001008 proc=2000 runpri=32, usrpri=71, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003352fc70 forw=0xffffffffffffffff, list=0xffff80002a232038,0xffff8000ffff4d10 process=0xffff8000ffff08f8 user=0xffff800036b8d000, vmspace=0xfffffd806b535c20 estcpu=21, cpticks=1, pctcpu=0.13, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 35462 419940 6893 0 2 0x8000000 syz-executor.4 35462 358640 6893 0 3 0xc000080 fsleep syz-executor.4 13858 313949 44616 60928 2 0x8000010 syz-executor.2 13858 402825 44616 60928 3 0xc000090 sbwait syz-executor.2 13858 10894 44616 60928 3 0xc000090 fsleep syz-executor.2 91389 421545 96532 0 3 0x8000080 nanoslp syz-executor.1 91389 8548 96532 0 3 0xc000080 fsleep syz-executor.1 91389 386670 96532 0 3 0xc000080 fsleep syz-executor.1 22434 311555 77266 0 2 0x8000480 syz-executor.6 22434 11790 77266 0 3 0xc000080 sbwait syz-executor.6 22434 499240 77266 0 3 0xc000080 fsleep syz-executor.6 72832 240937 31589 0 3 0x8000090 nanoslp syz-executor.5 72832 69735 31589 0 3 0xc000090 fifor syz-executor.5 72832 304329 31589 0 3 0xc000090 fsleep syz-executor.5 77266 297883 99885 0 2 0x8000002 syz-executor.6 23555 164876 0 0 3 0x14200 bored sosplice 45453 82714 99885 0 2 0x8000002 syz-executor.7 31589 451434 99885 0 2 0x8000002 syz-executor.5 6893 522043 99885 0 3 0x8000082 nanoslp syz-executor.4 83439 222235 99885 0 2 0x8000482 syz-executor.3 44616 27327 99885 0 3 0x8000082 nanoslp syz-executor.2 96532 419644 99885 0 3 0x8000082 nanoslp syz-executor.1 94029 303243 99885 0 2 0x8000482 syz-executor.0 99885 471212 9619 0 3 0x1a000082 wait syz-fuzzer 99885 345843 9619 0 2 0x1e000082 syz-fuzzer 99885 85961 9619 0 3 0x1e000082 wait syz-fuzzer 99885 92511 9619 0 3 0x1e000082 wait syz-fuzzer 99885 75825 9619 0 3 0x1e000082 wait syz-fuzzer 99885 185758 9619 0 3 0x1e000082 wait syz-fuzzer 99885 394775 9619 0 3 0x1e000082 thrsleep syz-fuzzer 99885 496335 9619 0 3 0x1e000082 wait syz-fuzzer 99885 192168 9619 0 3 0x1e000082 thrsleep syz-fuzzer 99885 66672 9619 0 3 0x1e000082 wait syz-fuzzer 99885 345567 9619 0 3 0x1e000082 thrsleep syz-fuzzer 99885 160542 9619 0 7 0x1e000003 syz-fuzzer 99885 464155 9619 0 3 0x1e000082 thrsleep syz-fuzzer 99885 504163 9619 0 2 0x1e000082 syz-fuzzer 99885 237753 9619 0 3 0x1e000082 thrsleep syz-fuzzer 99885 523096 9619 0 3 0x1e000082 wait syz-fuzzer 9619 368317 33906 0 3 0x810008a sigsusp ksh 33906 60999 40838 0 2 0x1800009a sshd 74287 106196 1 0 3 0x18100083 ttyin getty 40838 157554 1 0 3 0x18000088 kqread sshd 43738 222182 73139 74 3 0x19100092 bpf pflogd 73139 138061 1 0 3 0x18000080 sbwait pflogd 23450 246645 29970 73 3 0x19100090 kqread syslogd 29970 160832 1 0 3 0x18100082 sbwait syslogd 49537 110235 1 0 3 0x18100080 kqread resolvd 40554 77658 27176 77 3 0x18100092 kqread dhcpleased 22827 112045 27176 77 3 0x18100092 kqread dhcpleased 27176 439785 1 0 3 0x18000080 kqread dhcpleased 16366 438344 0 0 3 0x14200 bored smr 99989 502189 0 0 3 0x14200 pgzero zerothread 28706 7199 0 0 3 0x14200 aiodoned aiodoned 74829 214271 0 0 3 0x14200 syncer update 57887 392508 0 0 3 0x14200 cleaner cleaner 53751 23996 0 0 3 0x14200 reaper reaper 34019 364803 0 0 3 0x14200 pgdaemon pagedaemon 60599 21263 0 0 3 0x14200 bored viomb 74936 277214 0 0 3 0x40014200 acpi0 acpi0 37199 155929 0 0 3 0x40014200 idle1 98562 78543 0 0 3 0x14200 bored softnet3 83874 362497 0 0 3 0x14200 bored softnet2 12051 205945 0 0 3 0x14200 bored softnet1 30881 376156 0 0 3 0x14200 bored softnet0 48127 369491 0 0 3 0x14200 bored systqmp 47152 11560 0 0 3 0x14200 bored systq 2074 190156 0 0 3 0x14200 tmoslp softclockmp 20478 470469 0 0 3 0x40014200 tmoslp softclock 21450 330058 0 0 3 0x40014200 idle0 1 393192 0 0 3 0x8080082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10189 6491K 6734K 166960K 11419 0 pcb 16 10K 10K 166960K 60 0 rtable 234 6K 6K 166960K 416 0 pf 32 9K 10K 166960K 57 0 ifaddr 45 15K 15K 166960K 58 0 ifgroup 55 2K 2K 166960K 79 0 sysctl 3 0K 0K 166960K 3 0 counters 64 36K 36K 166960K 76 0 ioctlops 0 0K 4K 166960K 1493 0 iov 0 0K 12K 166960K 26 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1371 86K 86K 166960K 1504 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 10 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 36 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 16 57K 77K 166960K 391 0 sigio 0 0K 0K 166960K 8 0 proc 70 91K 115K 166960K 573 0 subproc 104 6K 6K 166960K 117 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 42 0 in_multi 100 7K 7K 166960K 129 0 ether_multi 1 0K 0K 166960K 6 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 61 281K 281K 166960K 61 0 exec 0 0K 1K 166960K 432 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 311 93K 98K 166960K 5857 0 UVM aobj 19 2K 2K 166960K 21 0 pinsyscall 40 80K 108K 166960K 1585 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 20 0 NDP 12 0K 1K 166960K 36 0 temp 52 6806K 6873K 166960K 15608 0 kqueue 12 18K 26K 166960K 58 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 60 0 55 1 0 1 1 0 8 0 rtentry 112 134 0 24 4 0 4 4 0 8 0 unpcb 144 272 0 247 2 0 2 2 0 8 1 syncache 336 11 0 11 1 0 1 1 0 8 1 tcpqe 32 156 0 156 2 1 1 1 0 8 1 tcpcb 808 185 0 171 8 2 6 8 0 8 4 arp 120 25 0 6 1 0 1 1 0 8 0 inpcb 392 489 0 466 3 0 3 3 0 8 0 nd6 136 28 0 3 1 0 1 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1168 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 34 0 2 1 0 1 1 0 8 0 pfstkey 128 34 0 2 2 0 2 2 0 8 0 pfstate 376 34 0 2 4 0 4 4 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 512 0 54 29 0 29 29 0 8 0 art_table 32 513 0 54 4 0 4 4 0 8 0 art_node 16 133 0 35 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 5 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 31 0 21 1 0 1 1 0 8 0 shmpl 112 18 0 2 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2007 0 474 97 0 97 97 0 8 0 ffsino 272 2007 0 474 103 0 103 103 0 8 0 nchpl 144 2643 0 895 67 0 67 67 0 8 0 uvmvnodes 80 2187 0 0 45 0 45 45 0 8 0 vnodes 216 2187 0 0 122 0 122 122 0 8 0 namei 1024 8884 0 8884 2 1 1 2 0 8 1 percpumem 16 52 0 6 1 0 1 1 0 8 0 vcpupl 2048 2 0 0 1 0 1 1 0 8 0 vmpool 696 2 0 0 1 0 1 1 0 8 0 kstatmem 264 36 0 12 2 0 2 2 0 8 0 scxspl 216 9734 0 9734 10 2 8 8 1 8 8 plimitpl 152 134 0 117 1 0 1 1 0 8 0 sigapl 424 702 0 653 7 1 6 6 0 8 0 futexpl 64 3979 0 3973 1 0 1 1 0 8 0 knotepl 120 355 0 0 11 0 11 11 0 8 0 kqueuepl 216 93 0 84 1 0 1 1 0 8 0 pipepl 320 178 0 150 4 0 4 4 0 8 1 fdescpl 496 683 0 654 5 1 4 5 0 8 0 filepl 152 3456 0 3196 12 0 12 12 0 8 1 lockfpl 104 84 0 81 1 0 1 1 0 8 0 lockfspl 48 38 0 35 1 0 1 1 0 8 0 sessionpl 144 25 0 8 1 0 1 1 0 8 0 pgrppl 48 27 0 10 1 0 1 1 0 8 0 ucredpl 104 292 0 277 1 0 1 1 0 8 0 zombiepl 144 655 0 653 1 0 1 1 0 8 0 processpl 1136 702 0 653 4 0 4 4 0 8 0 procpl 656 1032 0 959 9 1 8 8 0 8 0 sosppl 168 7 0 5 1 0 1 1 0 8 0 sockpl 568 828 0 776 5 0 5 5 0 8 0 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 9 0 0 2 0 2 2 0 8 0 mcl4k 4096 18 0 0 3 0 3 3 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 286 0 0 36 0 36 36 0 8 0 mtagpl 96 6 0 0 1 0 1 1 0 8 0 mbufpl 256 355 0 0 21 0 21 21 0 8 0 bufpl 280 5029 0 187 346 0 346 346 0 8 0 anonpl 24 218102 0 211856 67 5 62 62 0 186 19 amapchunkpl 152 18508 0 17783 33 0 33 33 0 158 1 amappl16 200 5939 0 5787 20 0 20 20 0 8 11 amappl15 192 52 0 52 1 1 0 1 0 8 0 amappl14 184 159 0 147 2 1 1 2 0 8 0 amappl13 176 12 0 12 1 1 0 1 0 8 0 amappl12 168 1371 0 1339 3 1 2 2 0 8 0 amappl11 160 60 0 45 1 0 1 1 0 8 0 amappl10 152 45 0 35 1 0 1 1 0 8 0 amappl9 144 194 0 193 2 1 1 1 0 8 0 amappl8 136 175 0 128 2 0 2 2 0 8 0 amappl7 128 75 0 58 1 0 1 1 0 8 0 amappl6 120 366 0 345 2 0 2 2 0 8 0 amappl5 112 172 0 156 1 0 1 1 0 8 0 amappl4 104 575 0 535 3 1 2 3 0 8 0 amappl3 96 4166 0 4072 3 0 3 3 0 8 0 amappl2 88 1109 0 1029 4 2 2 4 0 8 0 amappl1 80 10672 0 10127 23 7 16 23 0 8 3 amappl 88 5268 0 5056 6 0 6 6 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 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 20 0 2 1 0 1 1 0 8 0 uaddrrnd 24 685 0 654 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 685 0 654 1 0 1 1 0 8 0 vmmpekpl 168 10065 0 10003 3 0 3 3 0 8 0 vmmpepl 168 63419 0 61365 122 5 117 122 0 357 23 vmsppl 440 684 0 654 5 1 4 4 0 8 0 rwobjpl 56 25300 0 21869 54 2 52 52 0 8 2 pdppl 4096 1377 0 1310 100 29 71 75 0 8 4 pvpl 32 49100 0 0 397 1 396 396 0 265 0 pmappl 248 684 0 654 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 413 0 34 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace igmp_leavegroup(ffff800000e26f00,ffff8000006ac000) at igmp_leavegroup+0xaf sys/netinet/igmp.c:512 in_delmulti(ffff800000e26f00) at in_delmulti+0xd3 sys/netinet/in.c:908 ip_freemoptions(ffff8000006bca60) at ip_freemoptions+0x5d sys/netinet/ip_output.c:1737 in_pcbdetach(fffffd806a9d1938) at in_pcbdetach+0x97 sys/netinet/in_pcb.c:606 udp_detach(ffff800000e52b30) at udp_detach+0x3f sys/netinet/udp_usrreq.c:1139 soclose(ffff800000e52b30,0) at soclose+0x83 pru_detach sys/sys/protosw.h:283 [inline] soclose(ffff800000e52b30,0) at soclose+0x83 sys/kern/uipc_socket.c:411 soo_close(fffffd8079d38dc8,ffff80003352fc70) at soo_close+0x44 fdrop(fffffd8079d38dc8,ffff80003352fc70) at fdrop+0xd5 sys/kern/kern_descrip.c:1274 closef(fffffd8079d38dc8,ffff80003352fc70) at closef+0x120 sys/kern/kern_descrip.c:1258 fdfree(ffff80003352fc70) at fdfree+0xe4 sys/kern/kern_descrip.c:1190 exit1(ffff80003352fc70,0,0,1) at exit1+0x38a sys/kern/kern_exit.c:199 sys_exit(ffff80003352fc70,ffff800036b922b0,ffff800036b92200) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff800036b922b0) at syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline] syscall(ffff800036b922b0) at syscall+0x854 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x713a6a081d90, count: -14 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffff800029cebff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff82d9fab0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d9fab0) at __mp_lock+0x122 sys/kern/kern_lock.c:147 ktrgenio(ffff80002a20ecf8,1,1,ffff8000006bc200,348) at ktrgenio+0x1dd dofilewritev(ffff80002a20ecf8,1,ffff8000320fa7e8,0,ffff8000320fa8a0) at dofilewritev+0x393 sys/kern/sys_generic.c:396 sys_write(ffff80002a20ecf8,ffff8000320fa950,ffff8000320fa8a0) at sys_write+0x87 sys/kern/sys_generic.c:295 syscall(ffff8000320fa950) at syscall+0x8cf mi_syscall sys/sys/syscall_mi.h:180 [inline] syscall(ffff8000320fa950) at syscall+0x8cf sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x21bfe0630, count: 6 ddb{1}> trace x86_ipi_db(ffff800029cebff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff82d9fab0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d9fab0) at __mp_lock+0x122 sys/kern/kern_lock.c:147 ktrgenio(ffff80002a20ecf8,1,1,ffff8000006bc200,348) at ktrgenio+0x1dd dofilewritev(ffff80002a20ecf8,1,ffff8000320fa7e8,0,ffff8000320fa8a0) at dofilewritev+0x393 sys/kern/sys_generic.c:396 sys_write(ffff80002a20ecf8,ffff8000320fa950,ffff8000320fa8a0) at sys_write+0x87 sys/kern/sys_generic.c:295 syscall(ffff8000320fa950) at syscall+0x8cf mi_syscall sys/sys/syscall_mi.h:180 [inline] syscall(ffff8000320fa950) at syscall+0x8cf sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x21bfe0630, count: -9