panic: uvWmAR_fNIaNGu:l tS_PuLn NwirOTe_l ocLkOeWdE:RE Dad dONre sSsYS nCoAtL L in73 ma5p41 0S6t5art2i16 EnXIgT s0t aca kStopped at savectx+0xae: movl $0,%gs:0x558 TID PID UID PRFLAGS PFLAGS CPU COMMAND *400724 71886 0 0 0x4000000 0 syz-executor.5 151660 71886 0 0 0x4000000 1K syz-executor.5 savectx() at savectx+0xae end of kernel end trace frame: 0x5be63bd0e00, count: 14 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 *cpu1: uvm_fault_unwire_locked: address not in map ddb{0}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x5be63bd0e00, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002e4a3d70 rbx 0 rdx 0xffff800000d18ec0 rcx 0xffff80002123cd50 rax 0x3a r8 0xffff80002e4a3ca0 r9 0 r10 0x282457fcfa9a81f6 r11 0x518c9b3d04ab02c4 r12 0 r13 0 r14 0xffff80002123cd50 r15 0 rip 0xffffffff826653fe savectx+0xae cs 0x8 rflags 0x46 rsp 0xffff80002e4a3cf0 ss 0 savectx+0xae: movl $0,%gs:0x558 ddb{0}> show proc PROC (syz-executor.5) tid=400724 pid=71886 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff8000212dcff0,0xffff80002123c018 process=0xffff800021230010 user=0xffff80002e49e000, vmspace=0xfffffd805b089d30 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 97145 334648 62745 0 2 0 syz-executor.2 97145 402130 62745 0 3 0x4000080 fsleep syz-executor.2 27811 99062 4478 0 2 0 syz-executor.3 52278 164703 78742 0 2 0 syz-executor.6 52278 375214 78742 0 2 0x4000000 syz-executor.6 10261 502023 16596 0 2 0 syz-executor.7 10261 107549 16596 0 3 0x4000080 fsleep syz-executor.7 54285 58533 19427 0 2 0 syz-executor.0 54285 376876 19427 0 2 0x4000000 syz-executor.0 71886 67244 73063 0 2 0 syz-executor.5 *71886 400724 73063 0 7 0x4000000 syz-executor.5 71886 151660 73063 0 7 0x4000000 syz-executor.5 71886 256441 73063 0 2 0x4000000 syz-executor.5 4478 71038 32074 0 3 0x82 nanoslp syz-executor.3 19427 171109 32074 0 3 0x82 nanoslp syz-executor.0 47481 21965 0 0 3 0x14200 acct acct 42474 391001 32074 0 2 0x2 syz-executor.4 60394 52813 1 0 3 0x100083 ttyin getty 78742 257801 32074 0 3 0x82 nanoslp syz-executor.6 73063 513398 32074 0 3 0x82 nanoslp syz-executor.5 62745 470528 32074 0 3 0x82 nanoslp syz-executor.2 21798 41882 32074 0 3 0x2 biowait syz-executor.1 92709 346018 0 0 3 0x14200 bored sosplice 16596 104517 32074 0 3 0x82 nanoslp syz-executor.7 32074 77934 17809 0 3 0x2000082 wait syz-fuzzer 32074 100210 17809 0 3 0x6000082 nanoslp syz-fuzzer 32074 78265 17809 0 3 0x6000082 thrsleep syz-fuzzer 32074 243897 17809 0 3 0x6000082 kqread syz-fuzzer 32074 210407 17809 0 3 0x6000082 thrsleep syz-fuzzer 32074 405720 17809 0 3 0x6000082 wait syz-fuzzer 32074 9093 17809 0 3 0x6000082 wait syz-fuzzer 32074 238847 17809 0 3 0x6000082 thrsleep syz-fuzzer 32074 234167 17809 0 3 0x6000082 thrsleep syz-fuzzer 32074 295189 17809 0 3 0x6000082 thrsleep syz-fuzzer 32074 311716 17809 0 3 0x6000082 wait syz-fuzzer 32074 512152 17809 0 3 0x6000082 thrsleep syz-fuzzer 32074 434948 17809 0 3 0x6000082 wait syz-fuzzer 32074 28881 17809 0 3 0x6000082 wait syz-fuzzer 32074 193748 17809 0 3 0x6000082 wait syz-fuzzer 32074 187658 17809 0 3 0x6000082 wait syz-fuzzer 17809 195863 73486 0 3 0x10008a sigsusp ksh 73486 17126 17974 0 3 0x9a kqread sshd 17974 212384 1 0 3 0x88 kqread sshd 88979 348865 23124 74 3 0x1100092 bpf pflogd 23124 350704 1 0 3 0x80 netio pflogd 33946 333558 89137 73 3 0x1100090 kqread syslogd 89137 445896 1 0 3 0x100082 netio syslogd 14535 296975 1 0 3 0x100080 kqread resolvd 75607 44793 59089 77 3 0x100092 kqread dhcpleased 34903 138208 59089 77 3 0x100092 kqread dhcpleased 59089 302817 1 0 3 0x80 kqread dhcpleased 50850 426270 0 0 3 0x14200 bored smr 71162 50947 0 0 2 0x14200 zerothread 4603 477786 0 0 3 0x14200 aiodoned aiodoned 98717 402015 0 0 3 0x14200 syncer update 64896 374134 0 0 3 0x14200 cleaner cleaner 44281 158498 0 0 3 0x14200 reaper reaper 99151 211337 0 0 3 0x14200 pgdaemon pagedaemon 57544 217375 0 0 3 0x14200 bored viomb 70165 463195 0 0 3 0x40014200 acpi0 acpi0 70355 175780 0 0 3 0x40014200 idle1 56103 77401 0 0 3 0x14200 bored softnet3 40561 221377 0 0 3 0x14200 bored softnet2 67031 331241 0 0 3 0x14200 bored softnet1 96674 148199 0 0 3 0x14200 bored softnet0 51812 58269 0 0 3 0x14200 bored systqmp 86553 242085 0 0 3 0x14200 bored systq 31632 319648 0 0 3 0x14200 tmoslp softclockmp 22282 520322 0 0 3 0x40014200 tmoslp softclock 28557 23524 0 0 3 0x40014200 idle0 1 80505 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 71886 (syz-executor.5) thread 0xffff80002123cd50 (400724) fatal protection fault in supervisor mode trap type 4 code 0 rip ffffffff81308444 cs 8 rflags 10202 cr2 18e12dc4000 cpl d rsp ffff80002e4a38f0 gsbase 0xffffffff82c35ff0 kgsbase 0x0 panic: trap type 4, code=0, pc=ffffffff81308444 Parallel traceback, suppressed... dump to dev 4,1 not possible