@ sü˙˙uvm_fault(0xfffffd807f012968, 0x8, 0, 2) -> e kernel: page fault trap, code=0 Stopped at softclock+0xc7: movq %rcx,0x8(%rax) TID PID UID PRFLAGS PFLAGS CPU COMMAND * 25154 46574 0 0 0x4000000 0 syz-executor.7 softclock(0) at softclock+0xc7 sys/kern/kern_timeout.c:713 softintr_dispatch(0) at softintr_dispatch+0xd1 sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x1f buf_get(0,0,ab37848) at buf_get+0x750 sys/kern/vfs_bio.c:1186 geteblk(ab37848) at geteblk+0x2c sys/kern/vfs_bio.c:1061 readdisklabel(2902,ffffffff81a39c40,ffff800000cb1c00,0) at readdisklabel+0x145 sys/arch/amd64/amd64/disksubr.c:96 vndopen(2902,1,2000,ffff80002b40db78) at vndopen+0x17a sys/dev/vnd.c:203 spec_open(ffff80002b407c78) at spec_open+0x3df sys/kern/spec_vnops.c:150 VOP_OPEN(fffffd806e74fc28,1,fffffd807f7d76e8,ffff80002b40db78) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff80002b407ec8,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:177 doopenat(ffff80002b40db78,ffffff9c,20000240,0,0,ffff80002b4080a0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1127 syscall(ffff80002b408120) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:625 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5a9243c4d80, 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(0xfffffd807f012968, 0x8, 0, 2) -> e ddb> trace softclock(0) at softclock+0xc7 sys/kern/kern_timeout.c:713 softintr_dispatch(0) at softintr_dispatch+0xd1 sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x1f buf_get(0,0,ab37848) at buf_get+0x750 sys/kern/vfs_bio.c:1186 geteblk(ab37848) at geteblk+0x2c sys/kern/vfs_bio.c:1061 readdisklabel(2902,ffffffff81a39c40,ffff800000cb1c00,0) at readdisklabel+0x145 sys/arch/amd64/amd64/disksubr.c:96 vndopen(2902,1,2000,ffff80002b40db78) at vndopen+0x17a sys/dev/vnd.c:203 spec_open(ffff80002b407c78) at spec_open+0x3df sys/kern/spec_vnops.c:150 VOP_OPEN(fffffd806e74fc28,1,fffffd807f7d76e8,ffff80002b40db78) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff80002b407ec8,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:177 doopenat(ffff80002b40db78,ffffff9c,20000240,0,0,ffff80002b4080a0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1127 syscall(ffff80002b408120) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:625 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5a9243c4d80, count: -13 ddb> show registers rdi 0x4 rsi 0xd rbp 0xffff80002b407850 rbx 0x1 rdx 0 rcx 0xffffffff82c10a70 timeout_todo rax 0 r8 0x33 r9 0x33 r10 0x869b121d05a16f74 r11 0x93b0a334c7e1b5f8 r12 0xffffffff r13 0xffffffff82c75da0 rdrand_tmo r14 0 r15 0xffff8000217260f0 rip 0xffffffff81ad72f7 softclock+0xc7 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002b407810 ss 0x10 softclock+0xc7: movq %rcx,0x8(%rax) ddb> show proc PROC (syz-executor.7) pid=25154 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=53, nice=20 forw=0xffffffffffffffff, list=0xffff80002b40d350,0xffffffff82cf3498 process=0xffff80002b40a3f0 user=0xffff80002b403000, vmspace=0xfffffd807f012968 estcpu=3, cpticks=11, pctcpu=0.0 user=0, sys=11, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 46574 312092 73993 0 2 0 syz-executor.7 *46574 25154 73993 0 7 0x4000000 syz-executor.7 41777 198106 0 0 3 0x14200 bored sosplice 98259 8265 11373 0 2 0 syz-executor.4 98259 452395 11373 0 3 0x4000000 smrbar syz-executor.4 98259 91534 11373 0 3 0x4000000 clonelk syz-executor.4 14807 328628 56385 0 2 0x4081000 syz-executor.5 14807 256011 56385 0 3 0x4003000 suspend syz-executor.5 95527 411476 61095 0 2 0 syz-executor.0 95527 397700 61095 0 3 0x4000080 fsleep syz-executor.0 76801 420823 15327 0 2 0 syz-executor.6 ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10188 6413K 6418K 78643K 11289 0 pcb 13 8K 8K 78643K 15 0 rtable 234 6K 6K 78643K 355 0 ifaddr 75 20K 20K 78643K 77 0 counters 29 17K 17K 78643K 29 0 ioctlops 0 0K 2K 78643K 80 0 iov 0 0K 12K 78643K 75 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1318 82K 82K 78643K 1420 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 114 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 16 57K 77K 78643K 198 0 proc 56 58K 75K 78643K 473 0 subproc 104 6K 6K 78643K 104 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 99 6K 6K 78643K 99 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 43 201K 201K 78643K 43 0 exec 0 0K 1K 78643K 430 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 8 62K 64K 78643K 10 0 UVM amap 266 78K 79K 78643K 2761 0 UVM aobj 3 2K 2K 78643K 3 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 12 0K 2K 78643K 28 0 temp 99 5763K 5827K 78643K 4097 0 kqueue 12 18K 20K 78643K 25 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 43 0 40 1 0 1 1 0 8 0 rtentry 112 111 0 1 4 0 4 4 0 8 0 unpcb 144 145 0 130 3 0 3 3 0 8 2 syncache 296 4 0 4 1 1 0 1 0 8 0 tcpqe 32 43 0 43 2 2 0 1 0 8 0 tcpcb 776 14 0 9 1 0 1 1 0 8 0 arp 88 18 0 0 1 0 1 1 0 8 0 inpcb 336 73 0 65 1 0 1 1 0 8 0 nd6 48 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 453 0 0 29 0 29 29 0 8 0 art_table 32 454 0 0 4 0 4 4 0 8 0 art_node 16 110 0 10 1 0 1 1 0 8 0 sysvmsgpl 40 29 0 21 1 0 1 1 0 8 0 semapl 112 112 0 102 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dirhash: pool(0xffffffff82bd74a8:dirhash): free list modified: page 0xffff8000216b1000; item ordinal 0; addr 0xffff8000216b2800 (p 0xfffffd806e768000); offset 0x0=0x0 pool(dirhash): free list modified: page 0xffff8000216b1000; item ordinal 0; addr 0xffff8000216b2800 (p 0xfffffd806e768000); offset 0x0=0x0 dirhash: pool(0xffffffff82bd74a8:dirhash): page inconsistency: page 0xffff8000216b1000; item ordinal 1; addr 0x56362c7357093618 dino2pl 256 1631 0 196 90 0 90 90 0 8 0 ffsino 240 1631 0 196 85 0 85 85 0 8 0 nchpl 144 1994 0 321 63 0 63 63 0 8 0 uvmvnodes 80 1813 0 0 37 0 37 37 0 8 0 vnodes 216 1813 0 0 101 0 101 101 0 8 0 namei 1024 7155 0 7155 3 2 1 3 0 8 1 namei: pool(0xffffffff82c74a18:namei): free list modified: page 0xffff80002169d000; item ordinal 0; addr 0xffff80002169e400 (p 0xfffffd8069e74000); offset 0x0=0x0 pool(namei): free list modified: page 0xffff80002169d000; item ordinal 0; addr 0xffff80002169e400 (p 0xfffffd8069e74000); offset 0x0=0x0 namei: pool(0xffffffff82c74a18:namei): page inconsistency: page 0xffff80002169d000; item ordinal 1; addr 0x15bc66742d32daae kstatmem 264 24 0 0 2 0 2 2 0 8 0 scxspl 216 6460 0 6460 2 1 1 2 0 8 1 plimitpl 152 27 0 12 1 0 1 1 0 8 0 sigapl 424 513 0 448 8 0 8 8 0 8 0 futexpl 64 1167 0 1166 1 0 1 1 0 8 0 knotepl 120 6150 0 6070 3 0 3 3 0 8 0 kqueuepl 184 27 0 19 1 0 1 1 0 8 0 pipepl 288 204 0 176 7 0 7 7 0 8 5 fdescpl 432 476 0 449 4 0 4 4 0 8 0 filepl 120 2480 0 2238 15 0 15 15 0 8 6 lockfpl 104 26 0 24 1 0 1 1 0 8 0 lockfspl 48 13 0 11 1 0 1 1 0 8 0 sessionpl 144 23 0 7 1 0 1 1 0 8 0 pgrppl 48 23 0 7 1 0 1 1 0 8 0 ucredpl 104 430 0 419 1 0 1 1 0 8 0 zombiepl 144 450 0 448 1 0 1 1 0 8 0 processpl 1008 513 0 448 10 1 9 9 0 8 0 processpl: pool(0xffffffff82cf3698:processpl): page inconsistency: page 0x0; at page head addr 0xffff800021721f90 (p 0xffff800021720000) procpl 696 658 0 574 10 1 9 9 0 8 0 procpl: pool(0xffffffff82cf34f0:procpl): page inconsistency: page 0x0; at page head addr 0xffff800021727f90 (p 0xffff800021726000) sockpl 456 261 0 235 12 1 11 12 0 8 7 mcl16k 16384 11 0 11 1 0 1 1 0 8 1 mcl12k 12288 3 0 3 1 0 1 1 0 8 1 mcl8k 8192 17 0 17 1 0 1 1 0 8 1 mcl4k 4096 16 0 16 1 0 1 1 0 8 1 mcl2k 2048 73451 0 73378 33 19 14 33 0 8 3 mtagpl 96 4 0 4 1 1 0 1 0 8 0 mbufpl 256 116119 0 115878 28 11 17 21 0 8 0 bufpl 288 4066 0 140 281 0 281 281 0 8 0 anonpl 24 147291 0 131938 120 0 120 120 0 188 24 amapchunkpl 152 7896 0 7240 29 0 29 29 0 158 3 amappl16 200 3190 0 2711 43 8 35 38 0 8 8 amappl15 192 23 0 22 1 0 1 1 0 8 0 amappl14 184 153 0 140 2 1 1 2 0 8 0 amappl13 176 7 0 7 1 1 0 1 0 8 0 amappl12 168 402 0 400 1 0 1 1 0 8 0 amappl11 160 49 0 39 1 0 1 1 0 8 0 amappl10 152 36 0 25 1 0 1 1 0 8 0 amappl9 144 958 0 956 1 0 1 1 0 8 0 amappl8 136 133 0 85 2 0 2 2 0 8 0 amappl7 128 133 0 116 2 0 2 2 0 8 0 amappl6 120 147 0 138 2 1 1 2 0 8 0 amappl5 112 114 0 108 1 0 1 1 0 8 0 amappl4 104 460 0 434 2 1 1 2 0 8 0 amappl3 96 784 0 735 2 0 2 2 0 8 0 amappl2 88 824 0 757 3 1 2 3 0 8 0 amappl1 80 13106 0 12424 26 8 18 26 0 8 2 amappl 88 2264 0 2105 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 476 0 449 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 476 0 449 1 0 1 1 0 8 0 vmmpekpl 168 10035 0 9997 2 0 2 2 0 8 0 vmmpepl 168 54616 0 52108 137 0 137 137 0 357 25 vmsppl 344 475 0 449 3 0 3 3 0 8 0 rwobjpl 24 18573 0 15235 22 0 22 22 0 8 0 pdppl 4096 958 0 898 102 38 64 70 0 8 4 pvpl 32 360035 0 339572 360 19 341 360 0 265 170 pmappl 216 475 0 449 2 0 2 2 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 669 0 72 18 0 18 18 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace softclock(0) at softclock+0xc7 sys/kern/kern_timeout.c:713 softintr_dispatch(0) at softintr_dispatch+0xd1 sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x1f buf_get(0,0,ab37848) at buf_get+0x750 sys/kern/vfs_bio.c:1186 geteblk(ab37848) at geteblk+0x2c sys/kern/vfs_bio.c:1061 readdisklabel(2902,ffffffff81a39c40,ffff800000cb1c00,0) at readdisklabel+0x145 sys/arch/amd64/amd64/disksubr.c:96 vndopen(2902,1,2000,ffff80002b40db78) at vndopen+0x17a sys/dev/vnd.c:203 spec_open(ffff80002b407c78) at spec_open+0x3df sys/kern/spec_vnops.c:150 VOP_OPEN(fffffd806e74fc28,1,fffffd807f7d76e8,ffff80002b40db78) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff80002b407ec8,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:177 doopenat(ffff80002b40db78,ffffff9c,20000240,0,0,ffff80002b4080a0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1127 syscall(ffff80002b408120) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:625 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5a9243c4d80, count: -13 ddb> machine ddbcpu 1 No such command ddb> trace softclock(0) at softclock+0xc7 sys/kern/kern_timeout.c:713 softintr_dispatch(0) at softintr_dispatch+0xd1 sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x1f buf_get(0,0,ab37848) at buf_get+0x750 sys/kern/vfs_bio.c:1186 geteblk(ab37848) at geteblk+0x2c sys/kern/vfs_bio.c:1061 readdisklabel(2902,ffffffff81a39c40,ffff800000cb1c00,0) at readdisklabel+0x145 sys/arch/amd64/amd64/disksubr.c:96 vndopen(2902,1,2000,ffff80002b40db78) at vndopen+0x17a sys/dev/vnd.c:203 spec_open(ffff80002b407c78) at spec_open+0x3df sys/kern/spec_vnops.c:150 VOP_OPEN(fffffd806e74fc28,1,fffffd807f7d76e8,ffff80002b40db78) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff80002b407ec8,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:177 doopenat(ffff80002b40db78,ffffff9c,20000240,0,0,ffff80002b4080a0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1127 syscall(ffff80002b408120) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:625 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5a9243c4d80, count: -13