uvm_fault(0xfffffd8072a58e68, 0x8, 0, 2) -> e kernel: page fault trap, code=2 Stopped at softclock+0xe7: movq %rcx,0x8(%rax) TID PID UID PRFLAGS PFLAGS CPU COMMAND *208479 22862 0 0 0x4000000 0 syz-executor softclock(0) at softclock+0xe7 sys/kern/kern_timeout.c:784 softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87 dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 buf_get(0,0,ffd000) at buf_get+0x5de sys/kern/vfs_bio.c:1170 geteblk(ffd000) at geteblk+0x3c sys/kern/vfs_bio.c:-1 writedisklabel(d02,ffffffff8111d460,ffff800000039000) at writedisklabel+0x4b sys/arch/amd64/amd64/disksubr.c:133 sdioctl(d01,84946467,ffff8000015bd000,3,ffff8000338ca2b8) at sdioctl+0x959 sys/scsi/sd.c:919 VOP_IOCTL(fffffd8068c926e0,84946467,ffff8000015bd000,3,fffffd8007ffd548,ffff8000338ca2b8) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806a5fb350,84946467,ffff8000015bd000,ffff8000338ca2b8) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537 sys_ioctl(ffff8000338ca2b8,ffff80003c909cd0,ffff80003c909c20) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80003c909cd0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c909cd0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x370a7f1aef0, count: 2 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic *cpu0: uvm_fault(0xfffffd8072a58e68, 0x8, 0, 2) -> e ddb> trace softclock(0) at softclock+0xe7 sys/kern/kern_timeout.c:784 softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87 dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 buf_get(0,0,ffd000) at buf_get+0x5de sys/kern/vfs_bio.c:1170 geteblk(ffd000) at geteblk+0x3c sys/kern/vfs_bio.c:-1 writedisklabel(d02,ffffffff8111d460,ffff800000039000) at writedisklabel+0x4b sys/arch/amd64/amd64/disksubr.c:133 sdioctl(d01,84946467,ffff8000015bd000,3,ffff8000338ca2b8) at sdioctl+0x959 sys/scsi/sd.c:919 VOP_IOCTL(fffffd8068c926e0,84946467,ffff8000015bd000,3,fffffd8007ffd548,ffff8000338ca2b8) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806a5fb350,84946467,ffff8000015bd000,ffff8000338ca2b8) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537 sys_ioctl(ffff8000338ca2b8,ffff80003c909cd0,ffff80003c909c20) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80003c909cd0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c909cd0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x370a7f1aef0, count: -13 ddb> show registers rdi 0xffffffff rsi 0xd rbp 0xffff80003c909570 rbx 0x1 rdx 0xffff8000015e5dc0 rcx 0xffffffff839facb0 timeout_todo rax 0 r8 0xffff80002ecb3ce8 r9 0x21 r10 0xbc566252879f80b6 r11 0x36db93be989fe534 r12 0xffffffff r13 0xffffffff83a5f6f0 rdrand_tmo r14 0 r15 0xffff80002a767d30 rip 0xffffffff81e72427 softclock+0xe7 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c909530 ss 0x10 softclock+0xe7: movq %rcx,0x8(%rax) ddb> show proc PROC (syz-executor) tid=208479 pid=22862 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=77, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000338ca7e8,0xffff80002d8b0a88 process=0xffff8000ffffa898 user=0xffff80003c904000, vmspace=0xfffffd8072a58e68 estcpu=27, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 2487 453915 0 0 2 0 syz-executor 2487 79381 0 0 3 0x4000080 kqread syz-executor 22862 340291 0 0 2 0 syz-executor *22862 208479 0 0 7 0x4000000 syz-executor 22862 218284 0 0 3 0x4000080 fsleep syz-executor 53880 300701 57952 0 2 0 syz-executor 53880 265940 57952 0 3 0x4000080 netcon syz-executor 81350 182066 37656 0 2 0 syz-executor 81350 160949 37656 0 3 0x4000080 semwait syz-executor 22288 310857 0 0 2 0 syz-executor 22288 212155 0 0 3 0x4000080 tunread syz-executor 96136 517578 12544 0 2 0 syz-executor 96136 315499 12544 0 3 0x4000080 fsleep syz-executor 5966 265435 19257 0 2 0xc80 syz-executor 5966 151704 19257 0 2 0x4000c80 syz-executor 5966 462667 19257 0 3 0x4000080 fsleep syz-executor 19257 184326 0 0 2 0xc82 syz-executor 12544 113615 0 0 3 0x82 nanoslp syz-executor 30037 13723 1 0 3 0x100083 ttyin getty ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11039 12108K 12460K 166960K 12846 0 pcb 17 12K 12K 166960K 103 0 rtable 212 7K 7K 166960K 541 0 pf 36 14K 19K 166960K 127 0 ifaddr 39 6K 7K 166960K 68 0 ifgroup 55 2K 2K 166960K 84 0 sysctl 4 1K 9K 166960K 10 0 counters 34 17K 17K 166960K 43 0 ioctlops 1 2K 4K 166960K 243 0 iov 0 0K 8K 166960K 20 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1357 85K 85K 166960K 2127 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 26 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 85K 166960K 651 0 sigio 0 0K 0K 166960K 4 0 proc 29 49K 83K 166960K 692 0 subproc 72 4K 4K 166960K 108 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 54 0 in_multi 85 6K 7K 166960K 171 0 ether_multi 1 0K 0K 166960K 8 0 mrt 0 0K 0K 166960K 20 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 464 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 198 133K 163K 166960K 7028 0 UVM aobj 4 2K 2K 166960K 4 0 pinsyscall 34 68K 90K 166960K 1840 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 11 0 NDP 14 0K 2K 166960K 46 0 temp 48 9108K 9172K 166960K 18172 0 kqueue 14 22K 27K 166960K 106 0 SYN cache 2 16K 16K 166960K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 64 0 62 1 0 1 1 0 8 0 rtentry 136 165 0 75 4 0 4 4 0 8 0 unpcb 144 441 0 427 6 0 6 6 0 8 5 syncache 336 4 0 4 1 1 0 1 0 8 0 tcpcb 736 178 0 173 4 0 4 4 0 8 3 arp 96 26 0 10 1 0 1 1 0 8 0 inpcb 328 525 0 515 7 0 7 7 0 8 5 nd6 112 38 0 16 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 1 0 1 0 8 0 kcovpl 48 12 0 4 1 0 1 1 0 8 0 ppxss 1072 3 0 3 1 1 0 1 0 8 0 pfstscr 40 3 0 0 1 0 1 1 0 8 0 pffrag 232 3 0 0 1 0 1 1 0 482 0 pffrnode 88 3 0 0 1 0 1 1 0 8 0 pffrent 40 3 0 0 1 0 1 1 0 8 0 pfrktable 1344 1 0 1 1 1 0 1 0 8 0 pfsrclim 320 1 0 1 1 1 0 1 0 8 0 pfstlim 224 1 0 1 1 0 1 1 0 8 1 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pfstitem 24 5 0 0 1 0 1 1 0 8 0 pfstkey 128 6 0 1 1 0 1 1 0 8 0 pfstate 384 4 0 1 1 0 1 1 0 8 0 pfrule 1360 7 0 7 3 2 1 1 0 8 1 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 708 0 310 31 5 26 29 0 8 1 art_table 40 710 0 310 5 0 5 5 0 8 0 art_node 32 163 0 83 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 6 1 0 1 1 0 8 0 semapl 64 21 0 11 1 0 1 1 0 8 0 shmpl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dirhash: pool(0xffffffff839c7df8:dirhash): free list modified: page 0xffff80002a778000; item ordinal 0; addr 0xffff80002a778000 (p 0xfffffd806ea84000); offset 0x0=0x0 pool(dirhash): free list modified: page 0xffff80002a778000; item ordinal 0; addr 0xffff80002a778000 (p 0xfffffd806ea84000); offset 0x0=0x0 dirhash: pool(0xffffffff839c7df8:dirhash): page inconsistency: page 0xffff80002a778000; item ordinal 1; addr 0x857031c68ace2797 dino2pl 256 2544 0 1078 92 0 92 92 0 8 0 ffsino 256 2544 0 1078 92 0 92 92 0 8 0 nchpl 144 3427 0 1716 64 0 64 64 0 8 0 vnodes 216 3120 0 0 174 0 174 174 0 8 0 namei 1024 11550 0 11550 2 1 1 2 0 8 1 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 kstatmem 264 41 0 16 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 216 16713 0 16713 10 9 1 8 1 8 1 plimitpl 152 155 0 139 1 0 1 1 0 8 0 sigapl 424 934 0 894 6 1 5 6 0 8 0 knotepl 120 30674 0 30617 40 25 15 16 0 8 11 kqueuepl 184 131 0 121 1 0 1 1 0 8 0 pipepl 304 155 0 127 3 0 3 3 0 8 0 fdescpl 448 921 0 894 4 0 4 4 0 8 0 filepl 120 5316 0 5096 15 2 13 13 0 8 4 lockfpl 104 293 0 291 2 1 1 2 0 8 0 lockfspl 48 140 0 138 1 0 1 1 0 8 0 sessionpl 144 104 0 97 1 0 1 1 0 8 0 pgrppl 48 120 0 105 1 0 1 1 0 8 0 ucredpl 104 939 0 929 1 0 1 1 0 8 0 zombiepl 144 945 0 944 1 0 1 1 0 8 0 processpl 1152 934 0 894 4 0 4 4 0 8 0 processpl: pool(0xffffffff8399e840:processpl): page inconsistency: page 0x0; at page head addr 0xffff80002a747f90 (p 0xffff80002a744000) procpl 664 1612 0 1563 5 0 5 5 0 8 0 procpl: pool(0xffffffff8399e688:procpl): page inconsistency: page 0x0; at page head addr 0xffff80002a6edf90 (p 0xffff80002a6ec000) procpl: pool(0xffffffff8399e688:procpl): page inconsistency: page 0x0; at page head addr 0xffff80002a767f90 (p 0xffff80002a766000) sosppl 176 3 0 3 2 1 1 1 0 8 1 sockpl 552 1048 0 1022 13 1 12 12 0 8 9 mcl64k 65536 31 0 31 3 2 1 1 0 8 1 mcl16k 16384 9 0 9 1 1 0 1 0 8 0 mcl12k 12288 4 0 4 2 2 0 1 0 8 0 mcl9k128 9344 1 0 1 1 1 0 1 0 8 0 mcl8k 8192 13 0 13 3 2 1 1 0 8 1 mcl4k 4096 3190 0 3132 17 8 9 15 0 8 0 mcl2k2 2112 1 0 1 1 0 1 1 0 8 1 mcl2k 2048 683 0 682 4 1 3 3 0 8 2 mtagpl 96 9 0 4 1 0 1 1 0 8 0 mbufpl 256 10914 0 10761 75 1 74 74 0 8 59 bufpl 280 6298 0 103 443 0 443 443 0 8 0 anonpl 24 162213 0 159025 89 14 75 75 0 186 31 amapchunkpl 152 22955 0 22510 40 14 26 34 0 158 8 amappl16 200 3403 0 3355 33 17 16 26 0 8 8 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 465 0 465 3 2 1 1 0 8 1 amappl13 176 156 0 147 1 0 1 1 0 8 0 amappl12 168 1172 0 1146 2 0 2 2 0 8 0 amappl11 160 93 0 93 1 1 0 1 0 8 0 amappl10 152 59 0 51 1 0 1 1 0 8 0 amappl9 144 257 0 257 1 1 0 1 0 8 0 amappl8 136 113 0 113 3 2 1 1 0 8 1 amappl7 128 152 0 143 1 0 1 1 0 8 0 amappl6 120 202 0 201 1 0 1 1 0 8 0 amappl5 112 88 0 82 1 0 1 1 0 8 0 amappl4 104 266 0 254 1 0 1 1 0 8 0 amappl3 96 4506 0 4403 3 0 3 3 0 8 0 amappl2 88 549 0 501 2 0 2 2 0 8 0 amappl1 80 11350 0 10866 12 0 12 12 0 8 0 amappl 88 6182 0 6035 4 0 4 4 0 92 0 uvmvnodes 80 130 0 0 3 0 3 3 0 8 0 dma16384 16384 1 0 1 1 0 1 1 0 8 1 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 128 253 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 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 921 0 894 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 921 0 894 1 0 1 1 0 8 0 vmmpekpl 168 8308 0 8252 3 0 3 3 0 8 0 vmmpepl 168 64881 0 63217 99 6 93 93 0 357 16 vmsppl 368 920 0 894 4 1 3 4 0 8 0 rwobjpl 40 19986 0 19093 15 1 14 14 0 8 0 pdppl 4096 1848 0 1788 100 38 62 76 0 8 2 pvpl 32 418198 0 409181 162 21 141 141 0 265 39 pmappl 216 920 0 894 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 446 0 66 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace softclock(0) at softclock+0xe7 sys/kern/kern_timeout.c:784 softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87 dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 buf_get(0,0,ffd000) at buf_get+0x5de sys/kern/vfs_bio.c:1170 geteblk(ffd000) at geteblk+0x3c sys/kern/vfs_bio.c:-1 writedisklabel(d02,ffffffff8111d460,ffff800000039000) at writedisklabel+0x4b sys/arch/amd64/amd64/disksubr.c:133 sdioctl(d01,84946467,ffff8000015bd000,3,ffff8000338ca2b8) at sdioctl+0x959 sys/scsi/sd.c:919 VOP_IOCTL(fffffd8068c926e0,84946467,ffff8000015bd000,3,fffffd8007ffd548,ffff8000338ca2b8) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806a5fb350,84946467,ffff8000015bd000,ffff8000338ca2b8) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537 sys_ioctl(ffff8000338ca2b8,ffff80003c909cd0,ffff80003c909c20) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80003c909cd0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c909cd0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x370a7f1aef0, count: -13 ddb> machine ddbcpu 1 No such command ddb> trace softclock(0) at softclock+0xe7 sys/kern/kern_timeout.c:784 softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87 dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 buf_get(0,0,ffd000) at buf_get+0x5de sys/kern/vfs_bio.c:1170 geteblk(ffd000) at geteblk+0x3c sys/kern/vfs_bio.c:-1 writedisklabel(d02,ffffffff8111d460,ffff800000039000) at writedisklabel+0x4b sys/arch/amd64/amd64/disksubr.c:133 sdioctl(d01,84946467,ffff8000015bd000,3,ffff8000338ca2b8) at sdioctl+0x959 sys/scsi/sd.c:919 VOP_IOCTL(fffffd8068c926e0,84946467,ffff8000015bd000,3,fffffd8007ffd548,ffff8000338ca2b8) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806a5fb350,84946467,ffff8000015bd000,ffff8000338ca2b8) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537 sys_ioctl(ffff8000338ca2b8,ffff80003c909cd0,ffff80003c909c20) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80003c909cd0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c909cd0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x370a7f1aef0, count: -13