uvm_fault(0xfffffd806abcf3f0, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff8295ea48 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff800030bdc750 gsbase 0xffff8000299edff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff8295ea48 Starting stack trace... panic(ffffffff833b53ab) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff800030bdc6a0) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff80000147f000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,81,2000,ffff80003c44b4e8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003c44b4e8) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff800030bdc850) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80689d12d8,81,fffffd80097fb410,ffff80003c44b4e8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806c2687b0,ffff80003c44b4e8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806c2687b0,ffff80003c44b4e8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806c2687b0,ffff80003c44b4e8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806c2687b0,ffff80003c44b4e8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c44b4e8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c44b4e8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c44b4e8,ffff800030bdcbc0,ffff800030bdcb10) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800030bdcbc0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800030bdcbc0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x73bfe34d1ce0, count: 242 End of stack trace. WARNING: SPL NOT LOWERED ON TRAP EXIT 9 0 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND *405496 75297 0 0 0 0 syz-executor 269405 92677 0 0x14000 0x200 1 reaper proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x725004730630, 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(0xfffffd806abcf3f0, 0x0, 0, 1) -> e ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x725004730630, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003c43dd90 rbx 0 rdx 0 rcx 0xffff80003c44ad20 rax 0x2a r8 0xffff80003c43dcc0 r9 0 r10 0x1b6549450c178139 r11 0xa44cfee353b09838 r12 0 r13 0xffffffff824d8df8 Xdoreti+0x18 r14 0 r15 0 rip 0xffffffff81e804c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003c43dd10 ss 0x10 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{0}> show proc PROC (syz-executor) tid=405496 pid=75297 tcnt=2 stat=onproc flags process=0 proc=0 runpri=86, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c44b780,0xffff80002a27e2c0 process=0xffff8000333f5830 user=0xffff80003c438000, vmspace=0xfffffd806c261018 estcpu=36, cpticks=1, pctcpu=0.0, user=1, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 91416 379938 34266 0 2 0 syz-executor 32170 225713 79904 60928 2 0x10 syz-executor 32170 36688 79904 60928 2 0x4000010 syz-executor 62289 519985 43064 0 2 0 syz-executor 62289 380121 43064 0 3 0x4000080 fsleep syz-executor 28288 452465 19825 0 2 0 syz-executor 28288 261615 19825 0 3 0x4000080 ttyretype syz-executor *75297 405496 63089 0 7 0 syz-executor 75297 290299 63089 0 3 0x4000080 fsleep syz-executor 4298 13332 52159 0 3 0x80 nanoslp syz-executor 4298 378379 52159 0 3 0x4000080 kqsel syz-executor 4298 304338 52159 0 3 0x4000080 fsleep syz-executor 53060 19637 20162 0 3 0x80 nanoslp syz-executor 53060 510155 20162 0 3 0x4000080 kqsel syz-executor 53060 484561 20162 0 3 0x4000080 kqsel syz-executor 53060 6869 20162 0 3 0x4000080 kqsel syz-executor 79904 133860 93178 0 3 0x82 nanoslp syz-executor 9142 493614 0 0 3 0x14200 acct acct 34266 208187 93178 0 3 0x82 nanoslp syz-executor 19825 3693 93178 0 3 0x82 nanoslp syz-executor 43064 452719 93178 0 3 0x82 nanoslp syz-executor 63089 6023 93178 0 3 0x82 nanoslp syz-executor 20162 418852 93178 0 3 0x82 nanoslp syz-executor 88501 145007 93178 0 3 0x82 nanoslp syz-executor 52159 128700 93178 0 3 0x82 nanoslp syz-executor 93178 24780 9324 0 3 0x82 kqread syz-executor 9324 351688 55531 0 3 0x10008a sigsusp ksh 55531 276296 26310 0 3 0x98 kqread sshd-session 26310 263513 84078 0 3 0x92 kqread sshd-session 49600 346061 1 0 3 0x100083 ttyin getty 84078 515147 1 0 3 0x88 kqread sshd 37856 135421 22636 74 3 0x1100092 bpf pflogd 22636 102911 1 0 3 0x80 sbwait pflogd 99218 39309 37976 73 3 0x1100090 kqread syslogd 37976 250490 1 0 3 0x100082 sbwait syslogd 60574 186205 1 0 3 0x100080 kqread resolvd 69056 85628 92510 77 3 0x100092 kqread dhcpleased 15671 519042 92510 77 3 0x100092 kqread dhcpleased 92510 50842 1 0 3 0x80 kqread dhcpleased 59902 171640 0 0 2 0x40014200 smr 34521 411936 0 0 2 0x14200 zerothread 54293 508025 0 0 3 0x14200 aiodoned aiodoned 1259 440531 0 0 3 0x14200 syncer update 22686 493802 0 0 3 0x14200 cleaner cleaner 92677 269405 0 0 7 0x14200 reaper 9267 500677 0 0 3 0x14200 pgdaemon pagedaemon 53381 523099 0 0 3 0x14200 bored viomb 43124 143507 0 0 3 0x40014200 acpi0 acpi0 85881 454088 0 0 3 0x40014200 idle1 71756 78476 0 0 3 0x14200 bored softnet1 46463 459929 0 0 3 0x14200 bored softnet0 63536 216556 0 0 3 0x14200 smrbar systqmp 79040 43361 0 0 3 0x14200 bored systq 2106 426842 0 0 3 0x14200 tmoslp softclockmp 24521 422680 0 0 3 0x40014200 tmoslp softclock 85884 487679 0 0 3 0x40014200 idle0 1 426222 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 32170 (syz-executor) thread 0xffff8000fffeca80 (36688) exclusive rwlock fdlock r = 0 (0xffff8000fffef0f0) #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:748 #4 Xsyscall+0x128 Process 63536 (systqmp) thread 0xffff8000ffffecf8 (216556) shared rwlock systqmp r = 0 (0xffffffff8385c768) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10207 11080K 11217K 166960K 11389 0 pcb 17 12K 12K 166960K 44 0 rtable 241 7K 8K 166960K 392 0 pf 35 17K 82K 166960K 62 0 ifaddr 43 7K 7K 166960K 55 0 ifgroup 55 2K 2K 166960K 71 0 sysctl 1 1K 9K 166960K 5 0 counters 68 36K 37K 166960K 82 0 ioctlops 0 0K 4K 166960K 1495 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1347 85K 85K 166960K 1437 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 4 0 VM map 2 1K 1K 166960K 2 0 sem 8 0K 0K 166960K 8 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 236K 166960K 240 0 sigio 0 0K 0K 166960K 1 0 proc 71 115K 147K 166960K 564 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 19 0 in_multi 99 7K 7K 166960K 116 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 55 254K 254K 166960K 55 0 exec 0 0K 1K 166960K 456 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 242 163K 173K 166960K 3806 0 UVM aobj 6 2K 2K 166960K 6 0 pinsyscall 43 86K 102K 166960K 1380 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 5 0 NDP 14 0K 1K 166960K 34 0 temp 43 8643K 8710K 166960K 6671 0 kqueue 14 22K 26K 166960K 33 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 38 0 32 1 0 1 1 0 8 0 rtentry 176 125 0 15 6 0 6 6 0 8 1 unpcb 144 73 0 53 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 36 0 30 1 0 1 1 0 8 0 arp 136 20 0 2 1 0 1 1 0 8 0 inpcb 328 178 0 165 4 0 4 4 0 8 2 nd6 152 27 0 3 1 0 1 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 0 1 1 0 8 1 ppxss 1192 4 0 4 1 0 1 1 0 8 1 pppxif 1504 1 0 1 1 0 1 1 0 8 1 pfstscr 40 2 0 2 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 19 0 0 1 0 1 1 0 8 0 pfstkey 128 20 0 1 1 0 1 1 0 8 0 pfstate 384 20 0 1 2 0 2 2 0 8 0 pfrule 1344 25 0 20 2 1 1 2 0 8 0 rttmr 136 2 0 2 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 536 0 81 31 0 31 31 0 8 2 art_table 40 537 0 81 5 0 5 5 0 8 0 art_node 32 125 0 23 1 0 1 1 0 8 0 semapl 112 6 0 0 1 0 1 1 0 8 0 shmpl 112 3 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1709 0 192 96 0 96 96 0 8 0 ffsino 296 1709 0 192 118 0 118 118 0 8 1 nchpl 144 2007 0 303 64 0 64 64 0 8 0 rtmask 32 2 0 2 1 0 1 1 0 8 1 vnodes 216 1839 0 0 103 0 103 103 0 8 0 namei 1024 6286 0 6286 2 0 2 2 0 8 2 percpumem 16 56 0 7 1 0 1 1 0 8 0 kstatmem 264 34 0 8 2 0 2 2 0 8 0 scxspl 216 6483 0 6483 3 2 1 2 1 8 1 plimitpl 152 35 0 16 1 0 1 1 0 8 0 sigapl 424 535 0 486 7 0 7 7 0 8 1 knotepl 120 508 0 0 16 0 16 16 0 8 0 kqueuepl 224 40 0 26 1 0 1 1 0 8 0 pipepl 344 122 0 95 3 0 3 3 0 8 0 fdescpl 528 518 0 486 3 0 3 3 0 8 0 filepl 160 2108 0 1876 11 0 11 11 0 8 1 lockfpl 104 38 0 36 1 0 1 1 0 8 0 lockfspl 48 17 0 15 1 0 1 1 0 8 0 sessionpl 144 23 0 14 1 0 1 1 0 8 0 pgrppl 48 37 0 20 1 0 1 1 0 8 0 ucredpl 104 130 0 116 1 0 1 1 0 8 0 zombiepl 144 487 0 486 1 0 1 1 0 8 0 processpl 1232 535 0 486 5 0 5 5 0 8 0 procpl 664 659 0 601 6 0 6 6 0 8 0 sockpl 752 294 0 255 7 0 7 7 0 8 2 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 117 0 0 15 0 15 15 0 8 0 mcl2k 2048 29 0 0 4 0 4 4 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 204 0 0 13 0 13 13 0 8 0 bufpl 280 2447 0 131 166 0 166 166 0 8 0 anonpl 32 5439 0 0 44 0 44 44 0 246 0 amapchunkpl 152 10838 0 10351 25 0 25 25 0 158 5 amappl16 200 1188 0 1163 4 2 2 4 0 8 0 amappl15 192 42 0 42 1 1 0 1 0 8 0 amappl14 184 5 0 5 1 1 0 1 0 8 0 amappl13 176 442 0 441 1 0 1 1 0 8 0 amappl12 168 877 0 835 3 0 3 3 0 8 0 amappl11 160 6 0 6 1 1 0 1 0 8 0 amappl10 152 47 0 32 1 0 1 1 0 8 0 amappl9 144 312 0 311 1 0 1 1 0 8 0 amappl8 136 33 0 31 1 0 1 1 0 8 0 amappl7 128 85 0 83 1 0 1 1 0 8 0 amappl6 120 303 0 290 1 0 1 1 0 8 0 amappl5 112 84 0 74 1 0 1 1 0 8 0 amappl4 104 422 0 391 1 0 1 1 0 8 0 amappl3 96 1734 0 1642 4 1 3 3 0 8 0 amappl2 88 627 0 552 2 0 2 2 0 8 0 amappl1 80 9589 0 8986 14 0 14 14 0 8 1 amappl 88 3047 0 2883 4 0 4 4 0 92 0 uvmvnodes 80 1839 0 0 38 0 38 38 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 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 24 518 0 486 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 518 0 486 1 0 1 1 0 8 0 vmmpekpl 168 6011 0 5970 2 0 2 2 0 8 0 vmmpepl 168 40170 0 38210 87 0 87 87 0 357 1 vmsppl 488 517 0 486 5 0 5 5 0 8 0 rwobjpl 80 15364 0 12590 58 0 58 58 0 8 0 pdppl 4096 1044 0 972 102 28 74 88 0 8 2 pvpl 32 11879 0 0 97 1 96 96 0 265 0 pmappl 256 517 0 486 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 278 0 30 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x725004730630, count: -1 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp 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 witness_checkorder(ffffffff8387f9e0,ffff80002a243e70,0) at witness_checkorder+0x14 sys/kern/subr_witness.c:769 mtx_enter(ffffffff8387f9d0) at mtx_enter+0x4a sys/kern/kern_lock.c:260 msleep_nsec(ffffffff8387fa08,ffffffff8387f9d0,4,ffffffff833989a5,ffffffffffffffff) at msleep_nsec+0x2d3 sys/kern/kern_synch.c:209 reaper(ffff8000ffffd9f8) at reaper+0x13b sys/kern/kern_exit.c:477 end trace frame: 0x0, count: 8 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 witness_checkorder(ffffffff8387f9e0,ffff80002a243e70,0) at witness_checkorder+0x14 sys/kern/subr_witness.c:769 mtx_enter(ffffffff8387f9d0) at mtx_enter+0x4a sys/kern/kern_lock.c:260 msleep_nsec(ffffffff8387fa08,ffffffff8387f9d0,4,ffffffff833989a5,ffffffffffffffff) at msleep_nsec+0x2d3 sys/kern/kern_synch.c:209 reaper(ffff8000ffffd9f8) at reaper+0x13b sys/kern/kern_exit.c:477 end trace frame: 0x0, count: -7