¹j¼õ¬|ÿ ž¨E1\…: Tuvm_fault(0xfffffd80729da9b0, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff8143d5b8 cs 8 rflags 10246 cr2 0 cpl 0 rsp ffff80002a349f00 gsbase 0xffff8000299edff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff8143d5b8 Starting stack trace... panic(ffffffff833c5207) at panic+464 kerntrap(ffff80002a349e50) at kerntrap+779 alltraps_kern_meltdown() at alltraps_kern_meltdown+123 dt_ioctl_record_stop(ffff80000146e000) at dt_ioctl_record_stop+264 dtclose(11e5f,2,2000,ffff80003c453a28) at dtclose+265 spec_close(ffff80002a34a000) at spec_close+1126 VOP_CLOSE(fffffd805ea8edd8,2,fffffd80097fb820,ffff80003c453a28) at VOP_CLOSE+306 vn_closefile(fffffd806cc285c8,ffff80003c453a28) at vn_closefile+299 fdrop(fffffd806cc285c8,ffff80003c453a28) at fdrop+289 closef(fffffd806cc285c8,ffff80003c453a28) at closef+402 fdfree(ffff80003c453a28) at fdfree+278 exit1(ffff80003c453a28,0,0,1) at exit1+1398 sys_exit(ffff80003c453a28,ffff80002a34a370,ffff80002a34a2c0) at sys_exit+26 syscall(ffff80002a34a370) at syscall+2839 Xsyscall() at Xsyscall+296 end of kernel end trace frame: 0x720e0ff1dcb0, count: 242 End of stack trace. WARNING: SPL NOT LOWERED ON SYSCALL 91 -1304799816 EXIT 0 4 Stopped at savectx+174: movl $0,%gs:1672 TID PID UID PRFLAGS PFLAGS CPU COMMAND * 89349 73275 0 0 0 1 syz-executor 228100 28743 0 0x14000 0x200 0 reaper savectx() at savectx+174 end of kernel end trace frame: 0x7586b23a55a0, 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{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xfffffd80729da9b0, 0x0, 0, 1) -> e ddb{1}> trace savectx() at savectx+174 end of kernel end trace frame: 0x7586b23a55a0, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 18446603336929396288 rbx 0 rdx 0 rcx 18446603337232364128 rax 60 r8 18446603336929396080 r9 1 r10 7517314007089723597 r11 13848706243498206172 r12 0 r13 0 r14 18446603337232364128 r15 0 rip 18446744071588656110 savectx+174 cs 8 rflags 70 rsp 18446603336929396160 ss 16 savectx+174: movl $0,%gs:1672 ddb{1}> show proc PROC (syz-executor) tid=89349 pid=73275 tcnt=4 stat=onproc flags process=0 proc=0 runpri=83, usrpri=83, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a271ca0,0xffff80003c453508 process=0xffff8000fffef508 user=0xffff80002a35f000, vmspace=0xfffffd80729da028 estcpu=33, cpticks=4, pctcpu=0.3, user=2, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 78427 185075 25918 0 2 0 syz-executor 78427 81883 25918 0 3 0x4000000 inode syz-executor 78427 112436 25918 0 3 0x4000000 biowait syz-executor 28391 395536 57032 0 2 0 syz-executor 28391 263228 57032 0 3 0x4000080 rest syz-executor 28391 380835 57032 0 3 0x4000080 rest syz-executor 28391 109126 57032 0 3 0x4000080 bell syz-executor 28391 512027 57032 0 2 0x4000000 syz-executor 6837 94387 12931 0 3 0x80 nanoslp syz-executor 6837 137611 12931 0 3 0x4000080 ttyout syz-executor 6837 88565 12931 0 3 0x4000080 fsleep syz-executor *73275 89349 47984 0 7 0 syz-executor 73275 181050 47984 0 3 0x4000080 ttyin syz-executor 73275 491404 47984 0 3 0x4000080 fsleep syz-executor 73275 495496 47984 0 3 0x4000080 fsleep syz-executor 56985 57273 0 0 3 0x14200 acct acct 93417 207566 1 0 3 0x100083 ttyin getty 47984 238554 30168 0 3 0x82 nanoslp syz-executor 71241 328660 30168 0 3 0x82 nanoslp syz-executor 87772 258061 30168 0 3 0x82 nanoslp syz-executor 57032 429002 30168 0 3 0x82 nanoslp syz-executor 12931 448167 30168 0 3 0x82 nanoslp syz-executor 45031 254392 30168 0 3 0x82 wait syz-executor 25918 280284 30168 0 3 0x82 nanoslp syz-executor 66734 33733 30168 0 2 0x2 syz-executor 30168 124977 32855 0 3 0x82 kqread syz-executor 32855 291523 27882 0 3 0x10008a sigsusp ksh 27882 48148 79931 0 3 0x98 kqread sshd-session 79931 366956 35692 0 3 0x92 kqread sshd-session 35692 215649 1 0 3 0x88 kqread sshd 86582 470165 64733 74 3 0x1100092 bpf pflogd 64733 335176 1 0 3 0x80 sbwait pflogd 49704 153912 79558 73 3 0x1100090 kqread syslogd 79558 256547 1 0 3 0x100082 sbwait syslogd 80833 16409 1 0 3 0x100080 kqread resolvd 59834 445554 76710 77 3 0x100092 kqread dhcpleased 84658 168309 76710 77 3 0x100092 kqread dhcpleased 76710 241864 1 0 3 0x80 kqread dhcpleased 87840 476981 0 0 3 0x14200 bored smr 64157 189930 0 0 3 0x14200 pgzero zerothread 36397 415705 0 0 3 0x14200 aiodoned aiodoned 96074 70051 0 0 3 0x14200 syncer update 50633 254161 0 0 3 0x14200 cleaner cleaner 28743 228100 0 0 7 0x14200 reaper 94927 221563 0 0 3 0x14200 pgdaemon pagedaemon 62600 169805 0 0 3 0x14200 bored viomb 92145 268585 0 0 3 0x40014200 acpi0 acpi0 23824 498048 0 0 3 0x40014200 idle1 51364 226144 0 0 3 0x14200 bored softnet1 8353 225542 0 0 3 0x14200 bored softnet0 52202 449970 0 0 2 0x40014200 systqmp 71316 325315 0 0 3 0x14200 bored systq 72860 431641 0 0 3 0x14200 tmoslp softclockmp 64826 47724 0 0 3 0x40014200 tmoslp softclock 63134 394933 0 0 3 0x40014200 idle0 1 260810 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 78427 (syz-executor) thread 0xffff80002a270a78 (81883) Process 78427 (syz-executor) thread 0xffff80002f3dda10 (112436) Process 28743 (reaper) thread 0xffff8000ffffcf98 (228100) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10257 11122K 11294K 166960K 13777 0 pcb 17 16K 17K 166960K 1015 0 rtable 216 14K 15K 166960K 1203 0 pf 35 17K 67485K 166960K 451 0 ifaddr 35 7K 10K 166960K 272 0 ifgroup 55 2K 3K 166960K 481 0 sysctl 4 1K 9K 166960K 31 0 counters 68 36K 38K 166960K 544 0 ioctlops 0 0K 4K 166960K 2326 0 iov 0 0K 28K 166960K 211 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1463 92K 93K 166960K 4493 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 13 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 261 0 dirhash 12 2K 3K 166960K 111 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 248K 166960K 3691 0 sigio 1 0K 0K 166960K 120 0 proc 77 131K 180K 166960K 1207 0 subproc 72 4K 4K 166960K 156 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 490 0 in_multi 59 4K 7K 166960K 391 0 ether_multi 1 0K 0K 166960K 61 0 mrt 1 0K 0K 166960K 36 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 265 1182K 1182K 166960K 265 0 exec 0 0K 1K 166960K 890 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 8 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 274 154K 171K 166960K 34514 0 UVM aobj 139 24K 26K 166960K 142 0 pinsyscall 43 86K 104K 166960K 4998 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 250 0 NDP 12 0K 2K 166960K 192 0 temp 86 8660K 8756K 166960K 227472 0 kqueue 13 20K 32K 166960K 687 0 SYN cache 2 0K 16K 166960K 4 0 ddb{1}> 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 120 406 0 402 4 3 1 3 0 8 0 rtentry 176 334 0 260 6 1 5 6 0 8 0 unpcb 144 2243 0 2224 15 12 3 6 0 8 2 syncache 336 8 0 8 5 5 0 1 0 8 0 tcpqe 32 2 0 2 1 1 0 1 0 8 0 tcpcb 736 1464 0 1458 31 30 1 7 0 8 0 arp 136 50 0 33 1 0 1 1 0 8 0 inpcb 328 4513 0 4503 28 22 6 7 0 8 5 nd6 152 60 0 45 1 0 1 1 0 8 0 pkpcb 40 39 0 38 6 5 1 1 0 8 0 kcovpl 48 17 0 9 1 0 1 1 0 8 0 mppekey 1024 3 0 3 3 3 0 1 0 8 0 ppxss 1192 184 0 184 4 3 1 1 0 8 1 pppxif 1504 24 0 24 7 6 1 1 0 8 1 pffrag 232 23 0 12 1 0 1 1 0 482 0 pffrnode 88 20 0 9 1 0 1 1 0 8 0 pffrent 40 44 0 33 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 3 0 3 3 3 0 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 244 0 139 1 0 1 1 0 8 0 pfstkey 128 244 0 139 4 0 4 4 0 8 0 pfstate 384 244 0 139 14 2 12 12 0 8 0 pfrule 1344 22 0 17 2 1 1 2 0 8 0 rttmr 136 6 0 6 4 4 0 1 0 8 0 art_heap8 4096 6 0 2 5 1 4 5 0 8 0 art_heap4 256 1582 0 1300 50 22 28 32 0 8 1 art_table 40 1588 0 1302 6 0 6 6 0 8 0 art_node 32 326 0 263 1 0 1 1 0 8 0 sysvmsgpl 40 18 0 14 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 258 0 248 1 0 1 1 0 8 0 shmpl 112 130 0 2 4 0 4 4 0 8 0 dirhash 1024 83 0 66 3 0 3 3 0 8 0 dino2pl 256 8709 0 7179 97 0 97 97 0 8 0 ffsino 296 8709 0 7179 119 0 119 119 0 8 0 nchpl 144 13587 0 11848 65 0 65 65 0 8 0 rtmask 32 43 0 43 7 6 1 1 0 8 1 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 48810 0 48809 4 3 1 1 0 8 0 percpumem 16 287 0 238 1 0 1 1 0 8 0 vcpupl 3968 9 0 1 2 0 2 2 0 8 0 vmpool 840 9 0 1 1 0 1 1 0 8 0 kstatmem 264 312 0 284 3 0 3 3 0 8 0 acpiwqpl 32 3 0 3 1 0 1 1 1 8 1 scsiplug 72 18 0 18 5 4 1 1 0 8 1 scxspl 216 86645 0 86644 20 18 2 8 1 8 1 plimitpl 152 1221 0 1201 1 0 1 1 0 8 0 sigapl 424 3950 0 3901 9 2 7 8 0 8 0 knotepl 120 618 0 0 17 0 17 17 0 8 0 kqueuepl 224 1654 0 1645 20 18 2 5 0 8 1 pipepl 344 701 0 674 16 7 9 9 0 8 4 fdescpl 528 3903 0 3871 3 0 3 3 0 8 0 filepl 160 29557 0 29317 47 30 17 20 0 8 4 lockfpl 104 1834 0 1831 6 5 1 4 0 8 0 lockfspl 48 596 0 593 1 0 1 1 0 8 0 sessionpl 144 34 0 25 1 0 1 1 0 8 0 pgrppl 48 96 0 79 1 0 1 1 0 8 0 ucredpl 104 5648 0 5634 1 0 1 1 0 8 0 zombiepl 144 4250 0 4246 1 0 1 1 0 8 0 processpl 1232 3950 0 3901 7 2 5 6 0 8 0 procpl 664 10024 0 9962 8 1 7 8 0 8 0 sosppl 176 30 0 30 4 3 1 1 0 8 1 sockpl 752 7291 0 7257 51 41 10 18 0 8 6 mcl64k 65536 9 0 0 2 0 2 2 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 121 0 0 16 0 16 16 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 148 0 0 10 0 10 10 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 1610 0 0 101 1 100 101 0 8 0 bufpl 280 33547 0 27410 439 0 439 439 0 8 0 anonpl 32 15497 0 0 125 0 125 125 0 246 0 amapchunkpl 152 123582 0 122989 76 47 29 37 0 158 4 amappl16 200 12932 0 12891 97 78 19 35 0 8 8 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 8 0 8 2 2 0 1 0 8 0 amappl13 176 532 0 531 1 0 1 1 0 8 0 amappl12 168 4349 0 4305 3 0 3 3 0 8 0 amappl11 160 11 0 11 3 3 0 1 0 8 0 amappl10 152 63 0 48 1 0 1 1 0 8 0 amappl9 144 247 0 246 1 0 1 1 0 8 0 amappl8 136 28 0 25 1 0 1 1 0 8 0 amappl7 128 114 0 113 1 0 1 1 0 8 0 amappl6 120 456 0 442 1 0 1 1 0 8 0 amappl5 112 133 0 121 1 0 1 1 0 8 0 amappl4 104 480 0 449 1 0 1 1 0 8 0 amappl3 96 21546 0 21439 5 2 3 4 0 8 0 amappl2 88 4009 0 3930 2 0 2 2 0 8 0 amappl1 80 24500 0 23903 15 1 14 14 0 8 0 amappl 88 32963 0 32769 5 0 5 5 0 92 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 dma65536 65536 3 0 3 2 2 0 1 0 8 0 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma4096 4096 2 0 2 2 2 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 128 257 0 257 5 5 0 1 0 8 0 dma64 64 11 0 11 5 5 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 72 141 0 3 3 0 3 3 0 8 0 uaddrrnd 24 3903 0 3871 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3903 0 3871 1 0 1 1 0 8 0 vmmpekpl 168 28854 0 28789 4 0 4 4 0 8 0 vmmpepl 168 247950 0 245902 149 39 110 116 0 357 9 vmsppl 488 3902 0 3871 6 1 5 5 0 8 0 rwobjpl 80 68574 0 61530 165 11 154 157 0 8 4 pdppl 4096 7832 0 7752 130 50 80 86 0 8 0 pvpl 32 22485 0 0 181 0 181 181 0 265 0 pmappl 256 3911 0 3872 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 469 0 121 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+39: addq $8,%rsp x86_ipi_db(ffffffff837e0ff0) at x86_ipi_db+39 x86_ipi_handler() at x86_ipi_handler+217 Xresume_lapic_ipi() at Xresume_lapic_ipi+39 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+56 __mp_lock(ffffffff83971ac0) at __mp_lock+419 intr_handler(ffff80002a2442f0,ffff80000006ac00) at intr_handler+233 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+399 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+15 softintr_dispatch(0) at softintr_dispatch+293 dosoftint(0) at dosoftint+84 Xsoftclock() at Xsoftclock+39 rw_exit_write(ffffffff839822f0) at rw_exit_write+4 km_free(ffff80003c44c000,6000,ffffffff837397b8,ffffffff836e1978) at km_free+135 uvm_uarea_free(ffff80003c452a98) at uvm_uarea_free+79 end trace frame: 0xffff80002a2446b0, count: 0 ddb{0}> trace x86_ipi_db(ffffffff837e0ff0) at x86_ipi_db+39 x86_ipi_handler() at x86_ipi_handler+217 Xresume_lapic_ipi() at Xresume_lapic_ipi+39 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+56 __mp_lock(ffffffff83971ac0) at __mp_lock+419 intr_handler(ffff80002a2442f0,ffff80000006ac00) at intr_handler+233 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+399 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+15 softintr_dispatch(0) at softintr_dispatch+293 dosoftint(0) at dosoftint+84 Xsoftclock() at Xsoftclock+39 rw_exit_write(ffffffff839822f0) at rw_exit_write+4 km_free(ffff80003c44c000,6000,ffffffff837397b8,ffffffff836e1978) at km_free+135 uvm_uarea_free(ffff80003c452a98) at uvm_uarea_free+79 reaper(ffff8000ffffcf98) at reaper+458 end trace frame: 0x0, count: -15 ddb{0}> machine ddbcpu 1 Stopped at savectx+174: movl $0,%gs:1672 savectx() at savectx+174 end of kernel end trace frame: 0x7586b23a55a0, count: 14 ddb{1}> trace savectx() at savectx+174 end of kernel end trace frame: 0x7586b23a55a0, count: -1