uvm_fault(0xfffffd807d3facd0, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at rw_enter+0x179: movq 0(%r14),%r13 TID PID UID PRFLAGS PFLAGS CPU COMMAND 444238 68822 0 0 0 1 syz-executor.7 *401717 54269 0 0x2 0 0K syz-executor.4 rw_enter(0,1) at rw_enter+0x179 sys/kern/kern_rwlock.c:253 uvm_vnp_setsize(fffffd8071898290,0) at uvm_vnp_setsize+0x42 sys/uvm/uvm_vnode.c:1454 ffs_truncate(fffffd8072f66558,0,4,fffffd807f7d6680) at ffs_truncate+0x303 sys/ufs/ffs/ffs_inode.c:177 ufs_rmdir(ffff8000341a25b8) at ufs_rmdir+0x3a9 sys/ufs/ufs/ufs_vnops.c:1342 VOP_RMDIR(fffffd806435a798,fffffd8071898290,ffff8000341a2698) at VOP_RMDIR+0x12a sys/kern/vfs_vops.c:407 dounlinkat(ffff80002a252298,ffffff9c,7a210fdced80,8) at dounlinkat+0x20e sys/kern/vfs_syscalls.c:1880 syscall(ffff8000341a2810) at syscall+0x4e6 sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a210fdced70, count: 7 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(0xfffffd807d3facd0, 0x0, 0, 1) -> e ddb{0}> trace rw_enter(0,1) at rw_enter+0x179 sys/kern/kern_rwlock.c:253 uvm_vnp_setsize(fffffd8071898290,0) at uvm_vnp_setsize+0x42 sys/uvm/uvm_vnode.c:1454 ffs_truncate(fffffd8072f66558,0,4,fffffd807f7d6680) at ffs_truncate+0x303 sys/ufs/ffs/ffs_inode.c:177 ufs_rmdir(ffff8000341a25b8) at ufs_rmdir+0x3a9 sys/ufs/ufs/ufs_vnops.c:1342 VOP_RMDIR(fffffd806435a798,fffffd8071898290,ffff8000341a2698) at VOP_RMDIR+0x12a sys/kern/vfs_vops.c:407 dounlinkat(ffff80002a252298,ffffff9c,7a210fdced80,8) at dounlinkat+0x20e sys/kern/vfs_syscalls.c:1880 syscall(ffff8000341a2810) at syscall+0x4e6 sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a210fdced70, count: -8 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff8000341a22f0 rbx 0xffff80002a25229c rdx 0 rcx 0xffff80002a252298 rax 0xffffffff82ba4ff0 cpu_info_full_primary+0x1ff0 r8 0xfffffd8072f665c8 r9 0 r10 0xb8fa381863bee4f0 r11 0xef794b9a088abb9f r12 0 r13 0x1 r14 0 r15 0xffffffffffffffff rip 0xffffffff81e2b699 rw_enter+0x179 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000341a2250 ss 0 rw_enter+0x179: movq 0(%r14),%r13 ddb{0}> show proc PROC (syz-executor.4) tid=401717 pid=54269 tcnt=1 stat=onproc flags process=2 proc=0 runpri=17, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a251ff0,0xffff80002a1c6d60 process=0xffff8000ffff10d8 user=0xffff80003419d000, vmspace=0xfffffd807d3facd0 estcpu=36, cpticks=3, pctcpu=0.47, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 28498 215329 15979 0 2 0 syz-executor.2 68822 444238 98579 0 7 0 syz-executor.7 96725 92705 6102 0 2 0 syz-executor.0 96725 399595 6102 0 3 0x4000080 fsleep syz-executor.0 60498 190668 49876 0 2 0 syz-executor.1 60498 253410 49876 0 3 0x4000080 fsleep syz-executor.1 60498 465703 49876 0 2 0x4000000 syz-executor.1 84911 380754 3374 0 2 0 syz-executor.3 84911 18030 3374 0 3 0x4000080 fsleep syz-executor.3 15979 104223 12708 0 2 0x482 syz-executor.2 21488 71098 12708 0 2 0x2 syz-executor.6 98579 50179 12708 0 3 0x82 nanoslp syz-executor.7 43239 446941 0 0 3 0x14200 acct acct 4150 336998 0 0 3 0x14200 bored sosplice 44014 449001 0 0 3 0x14280 nfsidl nfsio 34804 127747 0 0 3 0x14280 nfsidl nfsio 50004 451380 0 0 3 0x14280 nfsidl nfsio 33011 222391 0 0 3 0x14280 nfsidl nfsio 56776 282965 0 0 3 0x14280 nfsidl nfsio 39844 197250 0 0 3 0x14280 nfsidl nfsio 47596 385091 0 0 3 0x14280 nfsidl nfsio 44678 325978 0 0 3 0x14280 nfsidl nfsio 12580 340203 0 0 3 0x14280 nfsidl nfsio 10914 133632 0 0 3 0x14280 nfsidl nfsio 66540 382183 0 0 3 0x14280 nfsidl nfsio 30357 29027 0 0 3 0x14280 nfsidl nfsio 45944 469773 0 0 3 0x14280 nfsidl nfsio 54138 245486 0 0 3 0x14280 nfsidl nfsio 92965 428975 0 0 3 0x14280 nfsidl nfsio 32538 192622 0 0 3 0x14280 nfsidl nfsio 42156 35986 0 0 3 0x14280 nfsidl nfsio 27838 365437 0 0 3 0x14280 nfsidl nfsio 44753 35414 0 0 3 0x14280 nfsidl nfsio 75975 347742 0 0 3 0x14280 nfsidl nfsio *54269 401717 12708 0 7 0x2 syz-executor.4 3374 94505 12708 0 3 0x82 nanoslp syz-executor.3 49876 314344 12708 0 3 0x82 nanoslp syz-executor.1 88332 390568 97909 0 3 0x100082 netio arp 97909 73412 1 0 3 0x10008a sigsusp sh 7982 392421 12708 0 2 0x2 syz-executor.5 6102 232879 12708 0 2 0x482 syz-executor.0 12708 370551 8427 0 3 0x2000082 thrsleep syz-fuzzer 12708 360235 8427 0 3 0x6000082 nanoslp syz-fuzzer 12708 482720 8427 0 3 0x6000082 thrsleep syz-fuzzer 12708 448084 8427 0 3 0x6000082 thrsleep syz-fuzzer 12708 271752 8427 0 3 0x6000082 wait syz-fuzzer 12708 442735 8427 0 3 0x6000082 wait syz-fuzzer 12708 464885 8427 0 3 0x6000082 wait syz-fuzzer 12708 412856 8427 0 3 0x6000082 wait syz-fuzzer 12708 261421 8427 0 3 0x6000082 wait syz-fuzzer 12708 152092 8427 0 3 0x6000082 thrsleep syz-fuzzer 12708 498655 8427 0 3 0x6000082 thrsleep syz-fuzzer 12708 507602 8427 0 3 0x6000082 thrsleep syz-fuzzer 12708 214031 8427 0 3 0x6000082 wait syz-fuzzer 12708 112126 8427 0 3 0x6000082 wait syz-fuzzer 12708 79600 8427 0 3 0x6000082 kqread syz-fuzzer 12708 164973 8427 0 3 0x6000082 wait syz-fuzzer 8427 229845 30243 0 3 0x10008a sigsusp ksh 30243 151177 33745 0 3 0x9a kqread sshd 47626 155151 1 0 3 0x100083 ttyin getty 33745 300177 1 0 3 0x88 kqread sshd 72483 409032 82399 74 3 0x1100092 bpf pflogd 82399 200510 1 0 3 0x80 netio pflogd 42116 402004 1423 73 3 0x1100090 kqread syslogd 1423 362929 1 0 3 0x100082 netio syslogd 53095 88703 1 0 3 0x100080 kqread resolvd 16600 219612 38702 77 3 0x100092 kqread dhcpleased 38922 264776 38702 77 3 0x100092 kqread dhcpleased 38702 521285 1 0 3 0x80 kqread dhcpleased 30340 200254 0 0 3 0x14200 bored smr 70963 354044 0 0 2 0x14200 zerothread 94971 475655 0 0 3 0x14200 aiodoned aiodoned 93238 370482 0 0 3 0x14200 syncer update 54148 377362 0 0 3 0x14200 cleaner cleaner 69629 401308 0 0 3 0x14200 reaper reaper 35452 79023 0 0 3 0x14200 pgdaemon pagedaemon 17627 325894 0 0 3 0x14200 bored viomb 74602 66257 0 0 3 0x40014200 acpi0 acpi0 80094 2227 0 0 3 0x40014200 idle1 9476 332501 0 0 3 0x14200 bored softnet3 26168 89745 0 0 3 0x14200 bored softnet2 1258 306201 0 0 3 0x14200 bored softnet1 64804 181577 0 0 3 0x14200 bored softnet0 29499 273861 0 0 3 0x14200 bored systqmp 66986 433682 0 0 3 0x14200 bored systq 20948 395175 0 0 3 0x14200 tmoslp softclockmp 66807 171953 0 0 2 0x40014200 softclock 51839 255479 0 0 3 0x40014200 idle0 1 169258 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 68822 (syz-executor.7) thread 0xffff80002d754d50 (444238) Process 54269 (syz-executor.4) thread 0xffff80002a252298 (401717) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10244 6514K 6992K 166960K 16330 0 pcb 13 10K 13K 166960K 317 0 rtable 244 7K 7K 166960K 683 0 pf 35 10K 10K 166960K 142 0 ifaddr 46 16K 16K 166960K 108 0 ifgroup 60 2K 2K 166960K 234 0 sysctl 3 0K 0K 166960K 3 0 counters 66 36K 36K 166960K 152 0 ioctlops 0 0K 4K 166960K 17982 0 iov 0 0K 18K 166960K 477 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1464 92K 92K 166960K 10351 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 13K 166960K 130 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 518 0 dirhash 12 2K 2K 166960K 369 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 17 61K 89K 166960K 17113 0 sigio 0 0K 0K 166960K 49 0 proc 74 91K 127K 166960K 1701 0 subproc 117 7K 7K 166960K 169 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 295 0 in_multi 99 7K 7K 166960K 300 0 ether_multi 1 0K 0K 166960K 7 0 mrt 1 0K 0K 166960K 11 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 265 1182K 1182K 166960K 265 0 exec 0 0K 1K 166960K 852 0 pfkey data 0 0K 0K 166960K 5 0 tdb 3 0K 0K 166960K 3 0 pagedep 1 8K 8K 166960K 1 0 inodedep 1 32K 32K 166960K 1 0 newblk 1 0K 0K 166960K 1 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 449 155K 155K 166960K 161204 0 UVM aobj 71 5K 5K 166960K 72 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 176 0 NDP 13 0K 1K 166960K 80 0 temp 74 5932K 6012K 166960K 85005 0 kqueue 12 18K 30K 166960K 4456 0 SYN cache 2 36K 44K 166960K 3 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 120 221 0 217 1 0 1 1 0 8 0 rtentry 112 185 0 72 4 0 4 4 0 8 0 unpcb 144 11715 0 11700 70 66 4 9 0 8 3 syncache 312 112 0 112 7 7 0 1 0 8 0 tcpqe 32 226 0 226 8 8 0 1 0 8 0 tcpcb 808 1028 0 1020 21 20 1 9 0 8 0 arp 120 34 0 16 1 0 1 1 0 8 0 inpcb 368 2543 0 2532 33 31 2 9 0 8 0 nd6 136 42 0 15 1 0 1 1 0 8 0 pkpcb 40 15 0 15 3 3 0 1 0 8 0 kcovpl 48 13 0 4 1 0 1 1 0 8 0 ppxss 1256 4 0 4 1 1 0 1 0 8 0 pffrag 232 94 0 90 3 2 1 2 0 482 0 pffrnode 88 77 0 73 2 1 1 1 0 8 0 pffrent 40 3091 0 3087 2 1 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 pfstitem 24 178 0 174 1 0 1 1 0 8 0 pfstkey 128 180 0 176 3 2 1 3 0 8 0 pfstate 376 180 0 176 8 7 1 7 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 678 0 213 30 0 30 30 0 8 0 art_table 32 679 0 213 4 0 4 4 0 8 0 art_node 16 182 0 80 1 0 1 1 0 8 0 sysvmsgpl 40 29 0 17 1 0 1 1 0 8 0 semapl 112 497 0 487 2 1 1 1 0 8 0 shmpl 112 69 0 1 2 0 2 2 0 8 0 dirhash 1024 255 0 238 3 0 3 3 0 8 0 dino2pl 256 24526 0 23072 93 1 92 93 0 8 0 ffsino 272 24526 0 23072 99 1 98 99 0 8 0 nchpl 144 45971 0 44322 63 0 63 63 0 8 0 uvmvnodes 80 31875 0 0 651 0 651 651 0 8 0 uvmvnodes: pool(0xffffffff82d62870:uvmvnodes): page inconsistency: page 0x0; at page head addr 0xfffffd8067eb4f90 (p 0xfffffd8067eb4000) vnodes 216 31875 0 0 1771 0 1771 1771 0 8 0 namei 1024 160591 0 160591 6 5 1 2 0 8 1 percpumem 16 90 0 43 1 0 1 1 0 8 0 vcpupl 2048 30 0 4 4 0 4 4 0 8 0 vmpool 696 36 0 10 3 0 3 3 0 8 0 kstatmem 264 112 0 86 2 0 2 2 0 8 0 scxspl 216 138488 0 138488 28 25 3 8 1 8 3 plimitpl 152 187 0 170 1 0 1 1 0 8 0 sigapl 424 17452 0 17382 10 1 9 9 0 8 0 futexpl 64 129925 0 129922 2 1 1 1 0 8 0 knotepl 120 667 0 0 13 2 11 11 0 8 0 kqueuepl 216 6341 0 6333 66 61 5 8 0 8 4 pipepl 320 1626 0 1530 56 48 8 9 0 8 0 fdescpl 496 17412 0 17382 5 0 5 5 0 8 0 filepl 152 95497 0 95107 123 108 15 21 0 8 0 lockfpl 104 7038 0 7035 13 12 1 2 0 8 0 lockfspl 48 3037 0 3034 1 0 1 1 0 8 0 sessionpl 144 29 0 11 1 0 1 1 0 8 0 pgrppl 48 32 0 14 1 0 1 1 0 8 0 ucredpl 104 4226 0 4214 1 0 1 1 0 8 0 zombiepl 144 17382 0 17382 3 2 1 1 0 8 1 processpl 1072 17452 0 17382 5 0 5 5 0 8 0 procpl 680 43747 0 43658 14 5 9 10 0 8 0 srpgc 96 2 0 2 1 1 0 1 0 8 0 sosppl 168 111 0 111 3 3 0 2 0 8 0 sockpl 488 14521 0 14491 234 221 13 29 0 8 8 mcl64k 65536 28 0 0 3 0 3 3 0 8 0 mcl16k 16384 21 0 0 3 1 2 3 0 8 0 mcl12k 12288 23 0 0 2 0 2 2 0 8 0 mcl9k 9216 26 0 0 2 1 1 2 0 8 0 mcl8k 8192 35 0 0 4 0 4 4 0 8 0 mcl4k 4096 43 0 0 4 1 3 3 0 8 0 mcl2k2 2112 10 0 0 1 0 1 1 0 8 0 mcl2k 2048 534 0 0 35 20 15 35 0 8 0 mtagpl 96 224 0 0 6 1 5 6 0 8 0 mbufpl 256 1311 0 0 74 0 74 74 0 8 0 bufpl 288 27933 0 21609 453 0 453 453 0 8 0 anonpl 24 1495187 0 1484516 193 126 67 125 0 186 1 amapchunkpl 152 505921 0 505139 100 64 36 63 0 158 2 amappl16 200 28007 0 27710 92 75 17 29 0 8 1 amappl15 192 24 0 23 1 0 1 1 0 8 0 amappl14 184 178 0 161 2 1 1 2 0 8 0 amappl13 176 38 0 38 3 3 0 1 0 8 0 amappl12 168 18149 0 18117 3 1 2 2 0 8 0 amappl11 160 64 0 49 1 0 1 1 0 8 0 amappl10 152 42 0 29 2 1 1 1 0 8 0 amappl9 144 243 0 242 2 1 1 1 0 8 0 amappl8 136 661 0 489 6 0 6 6 0 8 0 amappl7 128 232 0 205 2 0 2 2 0 8 0 amappl6 120 460 0 443 1 0 1 1 0 8 0 amappl5 112 292 0 280 1 0 1 1 0 8 0 amappl4 104 695 0 663 3 2 1 3 0 8 0 amappl3 96 100669 0 100582 5 2 3 3 0 8 0 amappl2 88 19374 0 19292 3 1 2 3 0 8 0 amappl1 80 67865 0 67284 23 10 13 23 0 8 0 amappl 88 160409 0 160184 8 1 7 7 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 71 0 1 2 0 2 2 0 8 0 uaddrrnd 24 17448 0 17392 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 17448 0 17392 1 0 1 1 0 8 0 vmmpekpl 168 115949 0 115887 4 0 4 4 0 8 0 vmmpepl 168 999773 0 997396 223 110 113 118 0 357 4 vmsppl 464 17447 0 17392 8 0 8 8 0 8 0 rwobjpl 56 254549 0 221063 482 10 472 472 0 8 0 pdppl 4096 34904 0 34810 731 632 99 104 0 8 5 pvpl 32 45352 0 0 366 0 366 366 0 265 0 pmappl 248 17447 0 17392 4 0 4 4 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1622 0 727 27 0 27 27 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace rw_enter(0,1) at rw_enter+0x179 sys/kern/kern_rwlock.c:253 uvm_vnp_setsize(fffffd8071898290,0) at uvm_vnp_setsize+0x42 sys/uvm/uvm_vnode.c:1454 ffs_truncate(fffffd8072f66558,0,4,fffffd807f7d6680) at ffs_truncate+0x303 sys/ufs/ffs/ffs_inode.c:177 ufs_rmdir(ffff8000341a25b8) at ufs_rmdir+0x3a9 sys/ufs/ufs/ufs_vnops.c:1342 VOP_RMDIR(fffffd806435a798,fffffd8071898290,ffff8000341a2698) at VOP_RMDIR+0x12a sys/kern/vfs_vops.c:407 dounlinkat(ffff80002a252298,ffffff9c,7a210fdced80,8) at dounlinkat+0x20e sys/kern/vfs_syscalls.c:1880 syscall(ffff8000341a2810) at syscall+0x4e6 sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a210fdced70, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffff800029d2bff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff82d01998) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d01998) at __mp_lock+0x122 sys/kern/kern_lock.c:147 syscall(ffff800039009220) at syscall+0x4cc mi_syscall sys/sys/syscall_mi.h:103 [inline] syscall(ffff800039009220) at syscall+0x4cc sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f5208f23640, count: 9 ddb{1}> trace x86_ipi_db(ffff800029d2bff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff82d01998) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d01998) at __mp_lock+0x122 sys/kern/kern_lock.c:147 syscall(ffff800039009220) at syscall+0x4cc mi_syscall sys/sys/syscall_mi.h:103 [inline] syscall(ffff800039009220) at syscall+0x4cc sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f5208f23640, count: -6