uvm_fault(0xfffffd806bee2798, 0xf, 0, 1) -> e kernel: page fault trap, code=0 Stopped at ktrops+0x58: movq 0x10(%r14),%r14 TID PID UID PRFLAGS PFLAGS CPU COMMAND *194568 59686 0 0 0x4000000 0K syz-executor 184702 59686 0 0 0x4000000 1 syz-executor ktrops(ffff80002a292a70,ffffffffffffffff,0,a0c7df9f,fffffd8065d4beb8,fffffd807f7d37b8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a292a70,ffffffffffffffff,0,a0c7df9f,fffffd8065d4beb8,fffffd807f7d37b8) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd8065d4beb8,4,20c7df9f,0,ffff80002a292a70) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd8065d4beb8,4,20c7df9f,0,ffff80002a292a70) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a292a70,ffff80003c43bc80,ffff80003c43bbd0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c43bc80) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c43bc80) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x71462c31fb0, count: 10 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(0xfffffd806bee2798, 0xf, 0, 1) -> e ddb{0}> trace ktrops(ffff80002a292a70,ffffffffffffffff,0,a0c7df9f,fffffd8065d4beb8,fffffd807f7d37b8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a292a70,ffffffffffffffff,0,a0c7df9f,fffffd8065d4beb8,fffffd807f7d37b8) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd8065d4beb8,4,20c7df9f,0,ffff80002a292a70) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd8065d4beb8,4,20c7df9f,0,ffff80002a292a70) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a292a70,ffff80003c43bc80,ffff80003c43bbd0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c43bc80) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c43bc80) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x71462c31fb0, count: -5 ddb{0}> show registers rdi 0xffff80002a292a70 rsi 0xffffffffffffffff rbp 0xffff80003c43b9a0 rbx 0xfffffd807f7d37b8 rdx 0 rcx 0xffff80002a292a70 rax 0xffffffff83892ff0 cpu_info_full_primary+0x1ff0 r8 0xfffffd8065d4beb8 r9 0xfffffd807f7d37b8 r10 0xbafe4aa70cabf87f r11 0xa019c5944cfbcb4 r12 0xffff80002a292a70 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xa0c7df9f rip 0xffffffff8291d7f8 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c43b920 ss 0 ktrops+0x58: movq 0x10(%r14),%r14 ddb{0}> show proc PROC (syz-executor) tid=194568 pid=59686 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002efef748,0xffff80002a2927f0 process=0xffff80003b82a0c0 user=0xffff80003c436000, vmspace=0xfffffd806bee2798 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 63957 303570 88846 0 2 0 syz-executor 63957 27431 88846 0 3 0x4000080 pipewr syz-executor 59686 336165 30414 0 2 0 syz-executor 59686 371686 30414 0 3 0x4000080 fsleep syz-executor *59686 194568 30414 0 7 0x4000000 syz-executor 59686 184702 30414 0 7 0x4000000 syz-executor 87439 92707 41573 60928 3 0x90 nanoslp syz-executor 87439 348102 41573 60928 3 0x4000090 fsleep syz-executor 87439 328079 41573 60928 3 0x4000090 ttyopn syz-executor 87439 283599 41573 60928 3 0x4000090 fsleep syz-executor 12013 200333 52702 0 3 0x80 nanoslp syz-executor 12013 238263 52702 0 3 0x4000080 lockf syz-executor 12013 85933 52702 0 3 0x4000080 fsleep syz-executor 83600 456667 47082 0 3 0x80 nanoslp syz-executor 83600 279340 47082 0 3 0x4000080 fsleep syz-executor 83600 243081 47082 0 3 0x4000080 sbwait syz-executor 83600 482051 47082 0 3 0x4000080 fsleep syz-executor 93957 468572 1 0 3 0x100083 ttyin getty 2100 304336 0 0 3 0x14200 bored sosplice 29689 168989 5951 0 3 0x82 nanoslp syz-executor 23585 463627 5951 0 3 0x82 wait syz-executor 88846 234278 5951 0 3 0x82 nanoslp syz-executor 41573 130885 5951 0 3 0x82 nanoslp syz-executor 52702 327879 5951 0 3 0x82 nanoslp syz-executor 30414 472259 5951 0 3 0x82 nanoslp syz-executor 48454 269004 5951 0 3 0x82 nanoslp syz-executor 47082 472606 5951 0 3 0x82 nanoslp syz-executor 5951 139024 92741 0 3 0x82 kqread syz-executor 92741 32959 8967 0 3 0x10008a sigsusp ksh 8967 306429 21865 0 3 0x98 kqread sshd-session 21865 375509 31872 0 3 0x92 kqread sshd-session 31872 421003 1 0 3 0x88 kqread sshd 4438 79334 10385 74 3 0x1100092 bpf pflogd 10385 354199 1 0 3 0x80 sbwait pflogd 23645 52440 90276 73 3 0x1100090 kqread syslogd 90276 250381 1 0 3 0x100082 sbwait syslogd 87721 88944 1 0 3 0x100080 kqread resolvd 36923 354766 58069 77 3 0x100092 kqread dhcpleased 51521 455220 58069 77 3 0x100092 kqread dhcpleased 58069 160769 1 0 3 0x80 kqread dhcpleased 58634 210406 0 0 3 0x14200 bored smr 41429 435026 0 0 3 0x14200 pgzero zerothread 70351 209144 0 0 3 0x14200 aiodoned aiodoned 94634 213047 0 0 3 0x14200 syncer update 38247 403384 0 0 3 0x14200 cleaner cleaner 2167 55190 0 0 3 0x14200 reaper reaper 60152 336877 0 0 3 0x14200 pgdaemon pagedaemon 36058 247122 0 0 3 0x14200 bored viomb 41851 53026 0 0 3 0x40014200 acpi0 acpi0 67680 304159 0 0 3 0x40014200 idle1 92944 104945 0 0 3 0x14200 bored softnet3 96198 335444 0 0 3 0x14200 bored softnet2 20801 279974 0 0 3 0x14200 bored softnet1 90071 201473 0 0 3 0x14200 bored softnet0 93461 78153 0 0 3 0x14200 bored systqmp 35429 166814 0 0 3 0x14200 bored systq 83494 54780 0 0 3 0x14200 tmoslp softclockmp 35926 176077 0 0 3 0x40014200 tmoslp softclock 53118 364453 0 0 3 0x40014200 idle0 1 260478 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 59686 (syz-executor) thread 0xffff80002a292a70 (194568) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a00ba8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 #2 mi_switch+0x4b7 sys/kern/sched_bsd.c:441 #3 sleep_finish+0x24f sys/kern/kern_synch.c:412 #4 biowait+0xc1 sys/kern/vfs_bio.c:1246 #5 bwrite+0x2e5 sys/kern/vfs_bio.c:758 #6 ffs_update+0x34f sys/ufs/ffs/ffs_inode.c:111 #7 ffs_truncate+0xcb6 sys/ufs/ffs/ffs_inode.c:-1 #8 ufs_inactive+0x206 sys/ufs/ufs/ufs_inode.c:84 #9 VOP_INACTIVE+0x107 sys/kern/vfs_vops.c:495 #10 vrele+0x129 sys/kern/vfs_subr.c:845 #11 ktrsettrace+0xe7 sys/kern/kern_ktrace.c:122 #12 ktrops+0x271 sys/kern/kern_ktrace.c:573 #13 doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] #13 doktrace+0x6dd sys/kern/kern_ktrace.c:517 #14 sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 #15 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #15 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #16 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10201 11033K 11451K 166960K 11825 0 pcb 17 16K 18K 166960K 213 0 rtable 243 8K 8K 166960K 395 0 pf 34 17K 21K 166960K 72 0 ifaddr 43 7K 8K 166960K 56 0 ifgroup 55 2K 2K 166960K 73 0 sysctl 2 1K 1K 166960K 2 0 counters 64 36K 37K 166960K 86 0 ioctlops 0 0K 4K 166960K 1561 0 iov 0 0K 13K 166960K 16 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1404 88K 89K 166960K 1753 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 9 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 23 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 110K 166960K 510 0 sigio 0 0K 0K 166960K 15 0 proc 72 91K 140K 166960K 608 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 0 0K 0K 166960K 46 0 in_multi 99 7K 7K 166960K 127 0 ether_multi 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 103 466K 466K 166960K 103 0 exec 0 0K 1K 166960K 407 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 266 153K 165K 166960K 6375 0 UVM aobj 18 2K 2K 166960K 19 0 pinsyscall 43 86K 104K 166960K 1595 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 24 0 NDP 12 0K 2K 166960K 34 0 temp 49 8685K 8754K 166960K 8442 0 kqueue 13 20K 26K 166960K 83 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 50 0 46 1 0 1 1 0 8 0 rtentry 176 122 0 12 6 0 6 6 0 8 0 unpcb 144 286 0 265 3 1 2 2 0 8 1 syncache 336 5 0 5 1 1 0 1 0 8 0 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 808 169 0 163 5 3 2 4 0 8 1 arp 128 18 0 0 1 0 1 1 0 8 0 inpcb 384 764 0 755 17 6 11 11 0 8 10 nd6 144 28 0 4 1 0 1 1 0 8 0 pkpcb 40 5 0 5 2 1 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 8 0 8 1 1 0 1 0 8 0 pppxif 1504 3 0 3 1 1 0 1 0 8 0 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 2 0 1 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 pfanchor 1288 3 0 0 1 0 1 1 0 8 0 pftag 88 1 0 1 1 0 1 1 0 8 1 pfstitem 24 47 0 1 1 0 1 1 0 8 0 pfstkey 128 47 0 1 2 0 2 2 0 8 0 pfstate 384 47 0 1 5 0 5 5 0 8 0 pfrule 1344 56 0 50 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 488 0 48 29 1 28 29 0 8 0 art_table 32 490 0 48 4 0 4 4 0 8 0 art_node 16 119 0 18 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 4 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 21 0 11 1 0 1 1 0 8 0 shmpl 112 16 0 1 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2218 0 710 96 1 95 96 0 8 0 ffsino 288 2218 0 710 109 0 109 109 0 8 0 nchpl 144 2966 0 1273 63 0 63 63 0 8 0 rtmask 32 2 0 2 1 1 0 1 0 8 0 uvmvnodes 80 2575 0 0 53 0 53 53 0 8 0 vnodes 216 2575 0 0 144 0 144 144 0 8 0 namei 1024 9929 0 9929 2 1 1 2 0 8 1 percpumem 16 58 0 11 1 0 1 1 0 8 0 kstatmem 264 34 0 10 2 0 2 2 0 8 0 scxspl 216 9299 0 9299 12 4 8 8 1 8 8 plimitpl 152 75 0 56 1 0 1 1 0 8 0 sigapl 424 828 0 777 9 0 9 9 0 8 1 futexpl 64 6074 0 6068 1 0 1 1 0 8 0 knotepl 120 531 0 0 17 0 17 17 0 8 0 kqueuepl 224 122 0 113 1 0 1 1 0 8 0 pipepl 336 143 0 115 3 0 3 3 0 8 0 fdescpl 520 786 0 754 3 0 3 3 0 8 0 filepl 160 4376 0 4106 20 3 17 17 0 8 5 lockfpl 104 231 0 184 2 0 2 2 0 8 0 lockfspl 48 51 0 47 1 0 1 1 0 8 0 sessionpl 144 25 0 16 1 0 1 1 0 8 0 pgrppl 48 79 0 62 1 0 1 1 0 8 0 ucredpl 104 577 0 561 1 0 1 1 0 8 0 zombiepl 144 780 0 777 1 0 1 1 0 8 0 processpl 1192 828 0 777 6 0 6 6 0 8 0 procpl 656 1449 0 1386 8 0 8 8 0 8 0 sosppl 168 1 0 1 1 1 0 1 0 8 0 sockpl 728 1110 0 1076 17 5 12 12 0 8 8 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 129 0 0 17 0 17 17 0 8 0 mcl2k 2048 21 0 0 3 0 3 3 0 8 0 mtagpl 96 12 0 0 1 0 1 1 0 8 0 mbufpl 256 202 0 0 13 0 13 13 0 8 0 bufpl 280 3010 0 125 207 0 207 207 0 8 0 anonpl 32 9217 0 0 75 0 75 75 0 246 0 amapchunkpl 152 20162 0 19592 33 6 27 28 0 158 5 amappl16 200 2362 0 2326 17 14 3 14 0 8 0 amappl15 192 4 0 4 1 1 0 1 0 8 0 amappl14 184 117 0 105 1 0 1 1 0 8 0 amappl13 176 10 0 10 2 2 0 1 0 8 0 amappl12 168 1430 0 1398 4 2 2 3 0 8 0 amappl11 160 81 0 67 1 0 1 1 0 8 0 amappl10 152 34 0 34 1 1 0 1 0 8 0 amappl9 144 251 0 250 1 0 1 1 0 8 0 amappl8 136 85 0 83 1 0 1 1 0 8 0 amappl7 128 107 0 94 1 0 1 1 0 8 0 amappl6 120 178 0 175 1 0 1 1 0 8 0 amappl5 112 126 0 116 1 0 1 1 0 8 0 amappl4 104 325 0 304 1 0 1 1 0 8 0 amappl3 96 3764 0 3634 5 1 4 4 0 8 0 amappl2 88 639 0 576 2 0 2 2 0 8 0 amappl1 80 10090 0 9483 15 0 15 15 0 8 0 amappl 88 5607 0 5417 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 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 18 0 1 1 0 1 1 0 8 0 uaddrrnd 24 786 0 754 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 786 0 754 1 0 1 1 0 8 0 vmmpekpl 168 8156 0 8112 3 0 3 3 0 8 0 vmmpepl 168 55505 0 53440 100 4 96 99 0 357 2 vmsppl 480 785 0 754 5 0 5 5 0 8 0 rwobjpl 72 19592 0 16026 65 0 65 65 0 8 0 pdppl 4096 1579 0 1508 105 32 73 87 0 8 2 pvpl 32 15735 0 0 127 0 127 127 0 265 0 pmappl 256 785 0 754 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 396 0 41 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace ktrops(ffff80002a292a70,ffffffffffffffff,0,a0c7df9f,fffffd8065d4beb8,fffffd807f7d37b8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a292a70,ffffffffffffffff,0,a0c7df9f,fffffd8065d4beb8,fffffd807f7d37b8) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd8065d4beb8,4,20c7df9f,0,ffff80002a292a70) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd8065d4beb8,4,20c7df9f,0,ffff80002a292a70) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a292a70,ffff80003c43bc80,ffff80003c43bbd0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c43bc80) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c43bc80) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x71462c31fb0, count: -5 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 __mp_lock(ffffffff83a009a0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83a009a0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 doopenat(ffff80002a2927e0,ffffff9c,200000000000,611,0,ffff800038405860) at doopenat+0x314 sys/kern/vfs_syscalls.c:1139 syscall(ffff800038405910) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800038405910) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x71522536900, 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 __mp_lock(ffffffff83a009a0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83a009a0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 doopenat(ffff80002a2927e0,ffffff9c,200000000000,611,0,ffff800038405860) at doopenat+0x314 sys/kern/vfs_syscalls.c:1139 syscall(ffff800038405910) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800038405910) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x71522536900, count: -7