uvm_fault(0xffffffff83ac4c10, 0xffff8000256b5ff8, 0, 1) -> d kernel: page fault trap, code=0 Stopped at ffs_indirtrunc+0x699: movq 0(%rax,%rbx,8),%rbx TID PID UID PRFLAGS PFLAGS CPU COMMAND *269527 95519 0 0x2 0 0 syz-executor 354930 44643 0 0x2 0x1 1 syz-executor ffs_indirtrunc(fffffd806fd4b140,fffffffffffffff4,f3e40,ffffffffffffffff,0,ffff80002a399d68) at ffs_indirtrunc+0x699 sys/ufs/ffs/ffs_inode.c:495 ffs_truncate(fffffd806fd4b140,0,0,ffffffffffffffff) at ffs_truncate+0x103f sys/ufs/ffs/ffs_inode.c:297 ufs_inactive(ffff80002a399ec0) at ufs_inactive+0x202 sys/ufs/ufs/ufs_inode.c:84 VOP_INACTIVE(fffffd800e6f8e98,ffff8000fffee018) at VOP_INACTIVE+0x104 sys/kern/vfs_vops.c:498 vput(fffffd800e6f8e98) at vput+0xe5 sys/kern/vfs_subr.c:789 VOP_REMOVE(fffffd800eeadb30,fffffd800e6f8e98,ffff80002a39a028) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff8000fffee018,ffffff9c,79218d70ffb0,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1923 syscall(ffff80002a39a1a0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a39a1a0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x79218d710460, count: 6 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(0xffffffff83ac4c10, 0xffff8000256b5ff8, 0, 1) -> d ddb{0}> trace ffs_indirtrunc(fffffd806fd4b140,fffffffffffffff4,f3e40,ffffffffffffffff,0,ffff80002a399d68) at ffs_indirtrunc+0x699 sys/ufs/ffs/ffs_inode.c:495 ffs_truncate(fffffd806fd4b140,0,0,ffffffffffffffff) at ffs_truncate+0x103f sys/ufs/ffs/ffs_inode.c:297 ufs_inactive(ffff80002a399ec0) at ufs_inactive+0x202 sys/ufs/ufs/ufs_inode.c:84 VOP_INACTIVE(fffffd800e6f8e98,ffff8000fffee018) at VOP_INACTIVE+0x104 sys/kern/vfs_vops.c:498 vput(fffffd800e6f8e98) at vput+0xe5 sys/kern/vfs_subr.c:789 VOP_REMOVE(fffffd800eeadb30,fffffd800e6f8e98,ffff80002a39a028) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff8000fffee018,ffffff9c,79218d70ffb0,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1923 syscall(ffff80002a39a1a0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a39a1a0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x79218d710460, count: -9 ddb{0}> show registers rdi 0x2 rsi 0x2 rbp 0xffff80002a399c40 rbx 0x7ff rdx 0 rcx 0xffff8000fffee018 rax 0xffff8000256b2000 r8 0xffffffffffffffff r9 0xffff80002a399d68 r10 0xb5df0381bc474ac7 r11 0x57f8eb5758af1703 r12 0xfffffffffffff7f6 r13 0x1 r14 0x2 r15 0xfffffd806fd4b140 rip 0xffffffff82f1e4e9 ffs_indirtrunc+0x699 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a399b50 ss 0x10 ffs_indirtrunc+0x699: movq 0(%rax,%rbx,8),%rbx ddb{0}> show proc PROC (syz-executor) tid=269527 pid=95519 tcnt=1 stat=onproc flags process=2 proc=0 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000fffeefa8,0xffff8000357c54f0 process=0xffff80002a39eb68 user=0xffff80002a395000, vmspace=0xfffffd806f5a07a8 estcpu=36, cpticks=47, pctcpu=0.22, user=0, sys=41, intr=6 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 87255 345499 44643 0 2 0 syz-executor 87255 373815 44643 0 3 0x4000080 fsleep syz-executor 87255 428706 44643 0 3 0x4000080 fsleep syz-executor 44692 332298 77557 0 2 0 syz-executor 44692 496277 77557 0 3 0x4000080 fsleep syz-executor 4165 51327 88815 0 2 0 syz-executor 4165 475957 88815 0 3 0x4000080 fsleep syz-executor 98215 75515 53348 0 2 0 syz-executor 98215 272105 53348 0 3 0x4000080 kqread syz-executor 10646 147889 34762 0 2 0 syz-executor 10646 7135 34762 0 2 0x4000000 syz-executor 10646 396954 34762 0 2 0x4000000 syz-executor 67453 523334 30163 0 2 0 syz-executor 67453 211691 30163 0 3 0x4000080 kqread syz-executor 67453 453343 30163 0 3 0x4000080 fsleep syz-executor 32135 239954 0 0 3 0x14200 acct acct 88815 2409 66769 0 3 0x82 nanoslp syz-executor 76993 523463 1 0 3 0x100083 ttyopn getty *95519 269527 66769 0 7 0x2 syz-executor 44643 354930 66769 0 7 0x3 syz-executor 53348 117645 66769 0 2 0xc82 syz-executor 30163 42035 66769 0 2 0xc82 syz-executor 77557 5584 66769 0 3 0x82 nanoslp syz-executor 34762 432298 66769 0 3 0x82 nanoslp syz-executor 66769 101443 41790 0 3 0x82 wait syz-executor 41790 485943 99738 0 3 0x10008a sigsusp ksh 99738 321230 65225 0 3 0x98 kqread sshd-session 65225 113796 19041 0 3 0x92 kqread sshd-session 19041 197528 1 0 3 0x88 kqread sshd 6449 99043 90681 74 3 0x1100092 bpf pflogd 90681 172090 1 0 3 0x80 sbwait pflogd 40388 426092 44640 73 3 0x1100090 kqread syslogd 44640 73075 1 0 3 0x100082 sbwait syslogd 65584 74527 1 0 3 0x100080 kqread resolvd 48473 360424 34378 77 3 0x100092 kqread dhcpleased 55881 299281 34378 77 3 0x100092 kqread dhcpleased 34378 21639 1 0 3 0x80 kqread dhcpleased 82519 174179 0 0 3 0x14200 bored smr 94785 164732 0 0 2 0x14200 zerothread 99323 229117 0 0 3 0x14200 aiodoned aiodoned 57462 380002 0 0 3 0x14200 syncer update 85401 425552 0 0 3 0x14200 cleaner cleaner 45466 217250 0 0 3 0x14200 reaper reaper 41853 355486 0 0 3 0x14200 pgdaemon pagedaemon 99184 127695 0 0 3 0x14200 bored viomb 48317 373660 0 0 3 0x40014200 acpi0 acpi0 48370 67658 0 0 3 0x40014200 idle1 40422 437404 0 0 3 0x14200 bored softnet1 96077 254678 0 0 3 0x14200 bored softnet0 1648 519164 0 0 3 0x14200 bored systqmp 88724 171994 0 0 3 0x14200 bored systq 65934 219747 0 0 3 0x14200 tmoslp softclockmp 69985 194540 0 0 3 0x40014200 tmoslp softclock 48273 161723 0 0 3 0x40014200 idle0 1 228176 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 95519 (syz-executor) thread 0xffff8000fffee018 (269527) exclusive rrwlock inode r = 0 (0xfffffd806fd4b1e0) #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 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2a2 sys/kern/vfs_subr.c:686 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203 #8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x98a sys/kern/vfs_lookup.c:567 #11 namei+0x7ca sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1887 #13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806e16d420) #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 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2a2 sys/kern/vfs_subr.c:686 #6 cache_lookup+0x351 sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x1e3 sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x98a sys/kern/vfs_lookup.c:567 #10 namei+0x7ca sys/kern/vfs_lookup.c:250 #11 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1887 #12 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #13 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83aac500) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] #1 syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783 #2 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11057 12107K 12284K 166960K 12559 0 pcb 18 12K 12K 166960K 64 0 rtable 190 11K 11K 166960K 523 0 pf 33 18K 24K 166960K 117 0 ifaddr 27 4K 7K 166960K 74 0 ifgroup 36 1K 2K 166960K 102 0 sysctl 3 1K 9K 166960K 7 0 counters 62 36K 37K 166960K 128 0 ioctlops 0 0K 4K 166960K 1681 0 iov 0 0K 17K 166960K 62 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1294 81K 82K 166960K 1781 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 17 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 23 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 81K 166960K 604 0 sigio 0 0K 0K 166960K 2 0 proc 75 131K 147K 166960K 676 0 subproc 72 4K 4K 166960K 99 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 116 0 in_multi 55 4K 7K 166960K 150 0 ether_multi 1 0K 0K 166960K 4 0 mrt 1 0K 0K 166960K 16 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 455 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 231 167K 186K 166960K 7188 0 UVM aobj 27 2K 2K 166960K 27 0 pinsyscall 41 82K 98K 166960K 1863 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 17 0 NDP 8 0K 2K 166960K 51 0 temp 46 9082K 9158K 166960K 35954 0 kqueue 15 24K 28K 166960K 93 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 82 0 78 1 0 1 1 0 8 0 rtentry 176 154 0 83 5 0 5 5 0 8 0 unpcb 144 255 0 237 2 0 2 2 0 8 1 syncache 336 7 0 7 3 2 1 1 0 8 1 tcpcb 736 120 0 115 2 1 1 2 0 8 0 arp 136 26 0 15 1 0 1 1 0 8 0 inpcb 328 411 0 400 2 0 2 2 0 8 0 nd6 152 37 0 22 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 1 0 1 0 8 0 kcovpl 48 11 0 3 1 0 1 1 0 8 0 ppxss 1192 23 0 23 1 0 1 1 0 8 1 pfstscr 40 3 0 2 1 0 1 1 0 8 0 pffrag 232 3 0 3 1 0 1 1 0 482 1 pffrnode 88 3 0 3 1 0 1 1 0 8 1 pffrent 40 6 0 6 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 pfrktable 1344 10 0 3 1 0 1 1 0 8 0 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 51 0 23 1 0 1 1 0 8 0 pfstkey 128 81 0 44 2 0 2 2 0 8 0 pfstate 448 59 0 33 6 1 5 5 0 8 0 pfrule 1360 31 0 24 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 617 0 316 29 8 21 29 0 8 0 art_table 40 620 0 316 5 1 4 5 0 8 0 art_node 32 154 0 89 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 0 1 0 1 1 0 8 0 semapl 112 20 0 10 1 0 1 1 0 8 0 shmpl 112 24 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2421 0 948 93 0 93 93 0 8 0 ffsino 296 2421 0 948 114 0 114 114 0 8 0 nchpl 144 3239 0 1524 64 0 64 64 0 8 0 rtmask 32 6 0 6 1 0 1 1 0 8 1 vnodes 216 2755 0 0 154 0 154 154 0 8 0 namei 1024 9802 0 9802 2 1 1 1 0 8 1 percpumem 16 79 0 33 1 0 1 1 0 8 0 pfiaddrpl 120 3 0 0 1 0 1 1 0 8 0 kstatmem 264 60 0 42 2 0 2 2 0 8 0 scsiplug 72 2 0 2 1 1 0 1 0 8 0 scxspl 216 16599 0 16599 10 2 8 8 1 8 8 plimitpl 152 120 0 103 1 0 1 1 0 8 0 sigapl 424 920 0 873 6 0 6 6 0 8 0 knotepl 120 542 0 0 17 0 17 17 0 8 0 kqueuepl 224 135 0 124 2 1 1 2 0 8 0 pipepl 344 150 0 123 3 0 3 3 0 8 0 fdescpl 528 903 0 873 3 0 3 3 0 8 0 filepl 160 3916 0 3692 12 1 11 12 0 8 0 lockfpl 104 186 0 184 1 0 1 1 0 8 0 lockfspl 48 83 0 81 1 0 1 1 0 8 0 sessionpl 144 52 0 43 1 0 1 1 0 8 0 pgrppl 48 71 0 54 1 0 1 1 0 8 0 ucredpl 104 422 0 409 1 0 1 1 0 8 0 zombiepl 144 874 0 873 2 1 1 1 0 8 0 processpl 1232 920 0 873 5 0 5 5 0 8 0 procpl 664 1531 0 1475 6 0 6 6 0 8 0 sosppl 176 5 0 5 2 1 1 1 0 8 1 sockpl 752 752 0 719 5 1 4 5 0 8 0 mcl64k 65536 12 0 0 2 0 2 2 0 8 0 mcl16k 16384 12 0 0 2 0 2 2 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 114 0 0 15 0 15 15 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 21 0 0 3 0 3 3 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 169 0 0 11 0 11 11 0 8 0 bufpl 280 6724 0 594 438 0 438 438 0 8 0 anonpl 32 8161 0 0 67 1 66 66 0 246 0 amapchunkpl 152 22933 0 22461 38 11 27 29 0 158 4 amappl16 200 2963 0 2935 18 3 15 15 0 8 6 amappl15 192 11 0 11 1 1 0 1 0 8 0 amappl14 184 466 0 465 1 0 1 1 0 8 0 amappl13 176 140 0 128 1 0 1 1 0 8 0 amappl12 168 1167 0 1138 2 0 2 2 0 8 0 amappl11 160 5 0 5 1 1 0 1 0 8 0 amappl10 152 88 0 74 1 0 1 1 0 8 0 amappl9 144 270 0 270 1 1 0 1 0 8 0 amappl8 136 114 0 111 1 0 1 1 0 8 0 amappl7 128 159 0 146 1 0 1 1 0 8 0 amappl6 120 186 0 185 1 0 1 1 0 8 0 amappl5 112 122 0 112 1 0 1 1 0 8 0 amappl4 104 316 0 295 1 0 1 1 0 8 0 amappl3 96 4412 0 4300 4 0 4 4 0 8 0 amappl2 88 611 0 546 2 0 2 2 0 8 0 amappl1 80 13410 0 12811 20 3 17 17 0 8 3 amappl 88 6324 0 6165 5 0 5 5 0 92 0 uvmvnodes 80 120 0 0 3 0 3 3 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 26 0 0 1 0 1 1 0 8 0 uaddrrnd 24 903 0 873 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 903 0 873 1 0 1 1 0 8 0 vmmpekpl 168 9053 0 9006 3 0 3 3 0 8 0 vmmpepl 168 66842 0 64970 112 4 108 108 0 357 9 vmsppl 488 902 0 873 6 1 5 5 0 8 0 rwobjpl 80 21505 0 20428 34 2 32 32 0 8 4 pdppl 4096 1813 0 1746 107 32 75 79 0 8 8 pvpl 32 19050 0 0 155 1 154 154 0 265 0 pmappl 256 902 0 873 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 290 0 48 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace ffs_indirtrunc(fffffd806fd4b140,fffffffffffffff4,f3e40,ffffffffffffffff,0,ffff80002a399d68) at ffs_indirtrunc+0x699 sys/ufs/ffs/ffs_inode.c:495 ffs_truncate(fffffd806fd4b140,0,0,ffffffffffffffff) at ffs_truncate+0x103f sys/ufs/ffs/ffs_inode.c:297 ufs_inactive(ffff80002a399ec0) at ufs_inactive+0x202 sys/ufs/ufs/ufs_inode.c:84 VOP_INACTIVE(fffffd800e6f8e98,ffff8000fffee018) at VOP_INACTIVE+0x104 sys/kern/vfs_vops.c:498 vput(fffffd800e6f8e98) at vput+0xe5 sys/kern/vfs_subr.c:789 VOP_REMOVE(fffffd800eeadb30,fffffd800e6f8e98,ffff80002a39a028) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff8000fffee018,ffffff9c,79218d70ffb0,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1923 syscall(ffff80002a39a1a0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a39a1a0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x79218d710460, count: -9 ddb{0}> machine ddbcpu 1