îÒ¬J6uvm_fault(0xffffffff839367d8, 0xffff800026933d96, 0, 2) -> d kernel: page fault trap, code=2 Stopped at memset+0x49: repe stosb %es:(%rdi) TID PID UID PRFLAGS PFLAGS CPU COMMAND 504718 26361 0 0 0x4000000 1 syz-executor *210325 73299 0 0x2 0x1 0K syz-executor memset() at memset+0x49 ffs_write(ffff80002a3ac350) at ffs_write+0xbab sys/ufs/ffs/ffs_vnops.c:401 VOP_WRITE(fffffd806c153b18,ffff80002a3ac408,3,fffffd807f7d24e0) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002a3907c8,fffffd806c153b18,fffffd807f7d24e0,ffff80002a3ac4d0,ffff80002a3ac4b0) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:691 ktrsyscall(ffff80002a3907c8,107,8,ffff80002a3ac660) at ktrsyscall+0x32b ktrwrite sys/kern/kern_ktrace.c:-1 [inline] ktrsyscall(ffff80002a3907c8,107,8,ffff80002a3ac660) at ktrsyscall+0x32b sys/kern/kern_ktrace.c:183 syscall(ffff80002a3ac660) at syscall+0x2e6 mi_syscall sys/sys/syscall_mi.h:154 [inline] syscall(ffff80002a3ac660) at syscall+0x2e6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a65a861c410, count: 8 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(0xffffffff839367d8, 0xffff800026933d96, 0, 2) -> d ddb{0}> trace memset() at memset+0x49 ffs_write(ffff80002a3ac350) at ffs_write+0xbab sys/ufs/ffs/ffs_vnops.c:401 VOP_WRITE(fffffd806c153b18,ffff80002a3ac408,3,fffffd807f7d24e0) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002a3907c8,fffffd806c153b18,fffffd807f7d24e0,ffff80002a3ac4d0,ffff80002a3ac4b0) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:691 ktrsyscall(ffff80002a3907c8,107,8,ffff80002a3ac660) at ktrsyscall+0x32b ktrwrite sys/kern/kern_ktrace.c:-1 [inline] ktrsyscall(ffff80002a3907c8,107,8,ffff80002a3ac660) at ktrsyscall+0x32b sys/kern/kern_ktrace.c:183 syscall(ffff80002a3ac660) at syscall+0x2e6 mi_syscall sys/sys/syscall_mi.h:154 [inline] syscall(ffff80002a3ac660) at syscall+0x2e6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a65a861c410, count: -7 ddb{0}> show registers rdi 0xffff800026933d96 rsi 0 rbp 0xffff80002a3ac270 rbx 0xadd96 acpi_pdirpa+0x99c07 rdx 0x2 rcx 0x2 rax 0 r8 0x2268 __ALIGN_SIZE+0x1268 r9 0xffff80002a3ac1d0 r10 0x66b0a059521d0ad9 r11 0xffff800026933d96 r12 0x4000 __ALIGN_SIZE+0x3000 r13 0x1d96 __ALIGN_SIZE+0xd96 r14 0xfffffd806c153b18 r15 0x1 rip 0xffffffff82455fc9 memset+0x49 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff80002a3ac068 ss 0x10 memset+0x49: repe stosb %es:(%rdi) ddb{0}> show proc PROC (syz-executor) tid=210325 pid=73299 tcnt=1 stat=onproc flags process=2 proc=1 runpri=71, usrpri=86, slppri=24, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a390f78,0xffff80002a390a68 process=0xffff80002a33c010 user=0xffff80002a3a7000, vmspace=0xfffffd806dfc31d8 estcpu=36, cpticks=2, pctcpu=1.27, user=4, sys=330, intr=9 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 26361 121968 27176 0 3 0x80 nanoslp syz-executor 26361 504718 27176 0 7 0x4000000 syz-executor 26361 54183 27176 0 3 0x4000080 fsleep syz-executor 26361 447579 27176 0 3 0x4000080 fsleep syz-executor 82957 216550 84073 0 3 0x80 fsleep syz-executor 82957 61825 84073 0 3 0x4000080 ttyout syz-executor 82957 501676 84073 0 3 0x4000080 fsleep syz-executor 66755 153079 83308 0 3 0x80 fsleep syz-executor 66755 480139 83308 0 3 0x4000080 fsleep syz-executor 66755 351762 83308 0 3 0x4000080 ttyout syz-executor 7429 304489 26503 0 3 0x80 fsleep syz-executor 7429 99327 26503 0 3 0x4000080 msgwait syz-executor 35494 194794 37051 0 3 0x80 fsleep syz-executor 35494 282130 37051 0 3 0x4000080 ttyout syz-executor 22548 162514 23926 0 3 0x80 fsleep syz-executor 22548 39284 23926 0 3 0x4000080 ttyin syz-executor 27176 190225 73299 0 3 0x82 nanoslp syz-executor 46348 305028 73299 0 3 0x82 wait syz-executor 23926 51538 73299 0 2 0x482 syz-executor 37051 59929 73299 0 3 0x82 nanoslp syz-executor 84073 52089 73299 0 3 0x82 nanoslp syz-executor 13947 46297 0 0 3 0x14200 bored sosplice 26503 242130 73299 0 3 0x82 nanoslp syz-executor 83308 294570 73299 0 3 0x82 nanoslp syz-executor *73299 210325 66607 0 7 0x3 syz-executor 66607 234032 78697 0 3 0x10008a sigsusp ksh 78697 326590 69136 0 3 0x98 kqread sshd-session 69136 330957 41717 0 3 0x92 kqread sshd-session 11471 129626 1 0 3 0x100083 ttyin getty 41717 391938 1 0 3 0x88 kqread sshd 49387 211400 19837 74 3 0x1100092 bpf pflogd 19837 400567 1 0 3 0x80 sbwait pflogd 74759 501875 84378 73 3 0x1100090 kqread syslogd 84378 180355 1 0 3 0x100082 sbwait syslogd 59069 83186 1 0 3 0x100080 kqread resolvd 27024 204933 5247 77 3 0x100092 kqread dhcpleased 79079 403565 5247 77 3 0x100092 kqread dhcpleased 5247 76441 1 0 3 0x80 kqread dhcpleased 71471 135142 0 0 3 0x14200 bored smr 62096 460010 0 0 2 0x14200 zerothread 71098 128973 0 0 3 0x14200 aiodoned aiodoned 37642 46941 0 0 3 0x14200 syncer update 57357 117357 0 0 3 0x14200 cleaner cleaner 64509 26706 0 0 3 0x14200 reaper reaper 35655 148551 0 0 3 0x14200 pgdaemon pagedaemon 16788 431135 0 0 3 0x14200 bored viomb 90834 156551 0 0 3 0x40014200 acpi0 acpi0 66082 49776 0 0 3 0x40014200 idle1 9693 209785 0 0 3 0x14200 bored softnet3 39214 297704 0 0 3 0x14200 bored softnet2 31920 390763 0 0 3 0x14200 bored softnet1 91762 205176 0 0 3 0x14200 bored softnet0 13635 378106 0 0 3 0x14200 bored systqmp 35239 328383 0 0 3 0x14200 bored systq 94674 36635 0 0 3 0x14200 tmoslp softclockmp 50709 433598 0 0 2 0x40014200 softclock 51446 95799 0 0 3 0x40014200 idle0 1 453640 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 73299 (syz-executor) thread 0xffff80002a3907c8 (210325) exclusive rrwlock inode r = 0 (0xfffffd806ddef2e8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2bd sys/kern/vfs_subr.c:694 #6 ktrwriteraw+0x172 sys/kern/kern_ktrace.c:688 #7 ktrsyscall+0x32b ktrwrite sys/kern/kern_ktrace.c:-1 [inline] #7 ktrsyscall+0x32b sys/kern/kern_ktrace.c:183 #8 syscall+0x2e6 mi_syscall sys/sys/syscall_mi.h:154 [inline] #8 syscall+0x2e6 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839fc958) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 ktrsyscall+0x2b3 ktrwrite sys/kern/kern_ktrace.c:-1 [inline] #1 ktrsyscall+0x2b3 sys/kern/kern_ktrace.c:183 #2 syscall+0x2e6 mi_syscall sys/sys/syscall_mi.h:154 [inline] #2 syscall+0x2e6 sys/arch/amd64/amd64/trap.c:577 #3 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10222 11023K 11282K 166960K 12110 0 pcb 17 14K 16K 166960K 487 0 rtable 192 10K 11K 166960K 657 0 pf 35 17K 21K 166960K 157 0 ifaddr 34 5K 7K 166960K 117 0 ifgroup 51 2K 2K 166960K 183 0 sysctl 3 1K 1K 166960K 3 0 counters 62 36K 37K 166960K 188 0 ioctlops 1 0K 4K 166960K 1714 0 iov 1 0K 16K 166960K 127 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1439 91K 91K 166960K 2307 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 13K 166960K 19 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 47 0 dirhash 12 2K 2K 166960K 42 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 93K 166960K 1409 0 sigio 0 0K 0K 166960K 54 0 proc 73 91K 127K 166960K 821 0 subproc 63 3K 4K 166960K 127 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 217 0 in_multi 75 5K 7K 166960K 204 0 ether_multi 1 0K 0K 166960K 9 0 mrt 1 0K 0K 166960K 9 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 241 1076K 1076K 166960K 241 0 exec 0 0K 1K 166960K 695 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 5 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 238 136K 167K 166960K 14288 0 UVM aobj 103 4K 4K 166960K 104 0 pinsyscall 41 82K 102K 166960K 2683 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 52 0 NDP 11 0K 2K 166960K 83 0 temp 73 8691K 8945K 166960K 67850 0 kqueue 15 24K 30K 166960K 217 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 164 0 161 2 1 1 2 0 8 0 rtentry 168 198 0 121 6 1 5 5 0 8 0 unpcb 144 746 0 725 5 1 4 4 0 8 3 syncache 336 7 0 7 3 2 1 1 0 8 1 tcpcb 808 313 0 309 5 3 2 4 0 8 1 arp 120 34 0 22 1 0 1 1 0 8 0 inpcb 376 1604 0 1595 11 3 8 8 0 8 7 nd6 136 47 0 27 1 0 1 1 0 8 0 pkpcb 40 12 0 11 1 0 1 1 0 8 0 kcovpl 48 14 0 7 1 0 1 1 0 8 0 ppxss 1168 43 0 43 1 0 1 1 0 8 1 pppxif 1480 5 0 5 2 1 1 1 0 8 1 pfstscr 40 2 0 0 1 0 1 1 0 8 0 pffrag 232 5 0 0 1 0 1 1 0 482 0 pffrnode 88 5 0 0 1 0 1 1 0 8 0 pffrent 40 10 0 5 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 1 0 0 1 0 1 1 0 8 0 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 73 0 18 1 0 1 1 0 8 0 pfstkey 128 75 0 20 2 0 2 2 0 8 0 pfstate 376 73 0 19 6 0 6 6 0 8 0 pfrule 1344 60 0 51 2 1 1 2 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 807 0 441 35 9 26 29 0 8 2 art_table 32 810 0 441 4 0 4 4 0 8 0 art_node 16 195 0 129 1 0 1 1 0 8 0 sysvmsgpl 40 21 0 18 2 1 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 44 0 34 1 0 1 1 0 8 0 shmpl 112 101 0 1 3 0 3 3 0 8 0 dirhash 1024 37 0 20 3 0 3 3 0 8 0 dino2pl 256 3978 0 2460 96 0 96 96 0 8 0 ffsino 280 3978 0 2460 109 0 109 109 0 8 0 nchpl 144 5855 0 4147 64 0 64 64 0 8 0 rtmask 32 8 0 8 2 1 1 1 0 8 1 uvmvnodes 80 4442 0 0 91 0 91 91 0 8 0 vnodes 216 4442 0 0 247 0 247 247 0 8 0 namei 1024 20477 0 20477 2 1 1 2 0 8 1 percpumem 16 108 0 63 1 0 1 1 0 8 0 kstatmem 264 110 0 88 3 0 3 3 0 8 1 acpiwqpl 32 2 0 2 1 0 1 1 1 8 1 scsiplug 72 8 0 8 2 1 1 1 0 8 1 scxspl 216 17630 0 17630 12 9 3 8 1 8 3 plimitpl 152 564 0 546 1 0 1 1 0 8 0 sigapl 424 1729 0 1680 10 1 9 9 0 8 1 futexpl 64 19232 0 19223 1 0 1 1 0 8 0 knotepl 120 562 0 0 18 1 17 18 0 8 0 kqueuepl 216 427 0 415 3 0 3 3 0 8 2 pipepl 328 220 0 193 3 0 3 3 0 8 0 fdescpl 504 1687 0 1657 5 0 5 5 0 8 0 filepl 152 10523 0 10301 16 3 13 13 0 8 2 lockfpl 104 373 0 371 1 0 1 1 0 8 0 lockfspl 48 154 0 152 1 0 1 1 0 8 0 sessionpl 144 32 0 23 1 0 1 1 0 8 0 pgrppl 48 126 0 110 1 0 1 1 0 8 0 ucredpl 104 1944 0 1930 1 0 1 1 0 8 0 zombiepl 144 1681 0 1680 1 0 1 1 0 8 0 processpl 1176 1729 0 1680 6 0 6 6 0 8 0 procpl 656 3781 0 3722 9 1 8 8 0 8 1 srpgc 96 17 0 17 2 1 1 1 0 8 1 sosppl 168 10 0 10 2 1 1 1 0 8 1 sockpl 688 2576 0 2542 13 3 10 10 0 8 6 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 123 0 0 16 0 16 16 0 8 0 mcl2k 2048 79 0 0 10 0 10 10 0 8 0 mtagpl 96 9 0 0 1 0 1 1 0 8 0 mbufpl 256 1316 0 0 82 0 82 82 0 8 0 bufpl 280 6913 0 759 440 0 440 440 0 8 0 anonpl 24 222786 0 219112 61 1 60 60 0 184 30 amapchunkpl 152 46855 0 46346 39 9 30 35 0 158 7 amappl16 200 3736 0 3705 23 12 11 15 0 8 7 amappl15 192 74 0 73 1 0 1 1 0 8 0 amappl14 184 137 0 125 1 0 1 1 0 8 0 amappl13 176 6 0 5 1 0 1 1 0 8 0 amappl12 168 2434 0 2404 3 1 2 2 0 8 0 amappl11 160 53 0 39 1 0 1 1 0 8 0 amappl10 152 2 0 2 1 1 0 1 0 8 0 amappl9 144 255 0 255 1 1 0 1 0 8 0 amappl8 136 25 0 22 1 0 1 1 0 8 0 amappl7 128 121 0 109 1 0 1 1 0 8 0 amappl6 120 241 0 236 1 0 1 1 0 8 0 amappl5 112 154 0 145 1 0 1 1 0 8 0 amappl4 104 380 0 359 1 0 1 1 0 8 0 amappl3 96 9530 0 9416 5 1 4 4 0 8 0 amappl2 88 778 0 713 2 0 2 2 0 8 0 amappl1 80 14696 0 14100 15 0 15 15 0 8 0 amappl 88 13227 0 13060 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 128 256 0 256 3 2 1 1 0 8 1 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 8 0 8 2 2 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 103 0 1 2 0 2 2 0 8 0 uaddrrnd 24 1687 0 1657 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1687 0 1657 1 0 1 1 0 8 0 vmmpekpl 168 14082 0 14012 4 0 4 4 0 8 0 vmmpepl 168 109411 0 107433 104 2 102 102 0 357 8 vmsppl 456 1686 0 1657 6 1 5 5 0 8 0 rwobjpl 64 33064 0 27586 89 0 89 89 0 8 0 pdppl 4096 3382 0 3314 116 44 72 86 0 8 4 pvpl 32 16945 0 0 137 0 137 137 0 265 0 pmappl 248 1686 0 1657 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 384 0 62 10 0 10 10 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace memset() at memset+0x49 ffs_write(ffff80002a3ac350) at ffs_write+0xbab sys/ufs/ffs/ffs_vnops.c:401 VOP_WRITE(fffffd806c153b18,ffff80002a3ac408,3,fffffd807f7d24e0) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002a3907c8,fffffd806c153b18,fffffd807f7d24e0,ffff80002a3ac4d0,ffff80002a3ac4b0) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:691 ktrsyscall(ffff80002a3907c8,107,8,ffff80002a3ac660) at ktrsyscall+0x32b ktrwrite sys/kern/kern_ktrace.c:-1 [inline] ktrsyscall(ffff80002a3907c8,107,8,ffff80002a3ac660) at ktrsyscall+0x32b sys/kern/kern_ktrace.c:183 syscall(ffff80002a3ac660) at syscall+0x2e6 mi_syscall sys/sys/syscall_mi.h:154 [inline] syscall(ffff80002a3ac660) at syscall+0x2e6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a65a861c410, count: -7 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029a9bff0) 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(ffffffff839fc750) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff839fc750) at __mp_lock+0x192 sys/kern/kern_lock.c:144 vn_ioctl(fffffd806c1124d8,81946467,ffff8000014f2800,ffff80002a3294b8) at vn_ioctl+0x4d sys/kern/vfs_vnops.c:514 sys_ioctl(ffff80002a3294b8,ffff80003a4ca0b0,ffff80003a4ca000) at sys_ioctl+0x5c3 sys/kern/sys_generic.c:-1 syscall(ffff80003a4ca0b0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003a4ca0b0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x49a4da07f40, count: 7 ddb{1}> trace x86_ipi_db(ffff800029a9bff0) 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(ffffffff839fc750) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff839fc750) at __mp_lock+0x192 sys/kern/kern_lock.c:144 vn_ioctl(fffffd806c1124d8,81946467,ffff8000014f2800,ffff80002a3294b8) at vn_ioctl+0x4d sys/kern/vfs_vnops.c:514 sys_ioctl(ffff80002a3294b8,ffff80003a4ca0b0,ffff80003a4ca000) at sys_ioctl+0x5c3 sys/kern/sys_generic.c:-1 syscall(ffff80003a4ca0b0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003a4ca0b0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x49a4da07f40, count: -8