uvm_fault(0xfffffd807effd5a0, 0x70, 0, 1) -> e kernel: page fault trap, code=0 Stopped at vfs_lookup+0x7f7: movl 0x70(%rax),%r14d ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xfffffd807effd5a0, 0x70, 0, 1) -> e vfs_lookup(ffff8000221778d8) at vfs_lookup+0x7f7 sys/kern/vfs_lookup.c:650 end trace frame: 0xffff8000221778c0, count: 0 ddb{1}> trace vfs_lookup(ffff8000221778d8) at vfs_lookup+0x7f7 sys/kern/vfs_lookup.c:650 namei(ffff8000221778d8) at namei+0x45f sys/kern/vfs_lookup.c:224 dounlinkat(ffff800022099530,ffffff9c,20000000,0) at dounlinkat+0x99 sys/kern/vfs_syscalls.c:1673 syscall(ffff800022177ae0) at syscall+0x576 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800022177ae0) at syscall+0x576 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,6,0,1,925a564e010) at Xsyscall+0x128 end of kernel end trace frame: 0x38d, count: -5 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800022177800 rbx 0x800c __ALIGN_SIZE+0x700c rdx 0x1ce3 __ALIGN_SIZE+0xce3 rcx 0xffff800000972080 rax 0 r8 0xffffffff81e2cfc8 vfs_lookup+0x658 r9 0x5 r10 0x5 r11 0x5ef9491dc7485261 r12 0xffff8000221778d8 r13 0xfffffd80663c1778 r14 0 r15 0 rip 0xffffffff81e2d167 vfs_lookup+0x7f7 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800022177770 ss 0x10 vfs_lookup+0x7f7: movl 0x70(%rax),%r14d ddb{1}> show proc PROC (syz-executor.1) pid=493515 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=77, nice=20 forw=0xffffffffffffffff, list=0xffff800022098978,0xffff8000220992e8 process=0xffff8000220ec9f0 user=0xffff800022172000, vmspace=0xfffffd807effd5a0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 27139 62404 57662 0 2 0 syz-executor.0 56469 90360 86674 0 2 0 syz-executor.1 *56469 493515 86674 0 7 0x4000000 syz-executor.1 56469 126079 86674 0 2 0x4000000 syz-executor.1 56469 97552 86674 0 7 0x4000000 syz-executor.1 86674 437685 84694 0 3 0x82 nanosleep syz-executor.1 52569 50926 1 0 3 0x100083 ttyin getty 57662 276311 84694 0 3 0x82 nanosleep syz-executor.0 99737 519093 0 0 3 0x14200 bored sosplice 84694 25923 35322 0 3 0x82 thrsleep syz-fuzzer 84694 322068 35322 0 3 0x4000082 thrsleep syz-fuzzer 84694 150993 35322 0 3 0x4000082 thrsleep syz-fuzzer 84694 215305 35322 0 3 0x4000082 kqread syz-fuzzer 84694 101593 35322 0 3 0x4000082 thrsleep syz-fuzzer 84694 37626 35322 0 3 0x4000082 thrsleep syz-fuzzer 84694 131887 35322 0 3 0x4000082 thrsleep syz-fuzzer 84694 66959 35322 0 3 0x4000082 thrsleep syz-fuzzer 84694 195203 35322 0 3 0x4000082 thrsleep syz-fuzzer 84694 261118 35322 0 3 0x4000082 thrsleep syz-fuzzer 35322 310590 58282 0 3 0x10008a pause ksh 58282 116868 94900 0 3 0x92 select sshd 94900 210425 1 0 3 0x80 select sshd 20186 120544 76176 74 3 0x100092 bpf pflogd 76176 62479 1 0 3 0x80 netio pflogd 57757 100306 66189 73 2 0x100090 syslogd 66189 161483 1 0 3 0x100082 netio syslogd 8334 346323 1 77 3 0x100090 poll dhclient 63828 357713 1 0 3 0x80 poll dhclient 25650 176095 0 0 2 0x14200 zerothread 86568 46286 0 0 3 0x14200 aiodoned aiodoned 12954 306789 0 0 3 0x14200 syncer update 99767 110045 0 0 3 0x14200 cleaner cleaner 20605 438562 0 0 3 0x14200 reaper reaper 85259 158208 0 0 3 0x14200 pgdaemon pagedaemon 60525 493466 0 0 3 0x14200 bored crynlk 79369 444532 0 0 3 0x14200 bored crypto 13955 425265 0 0 3 0x40014200 acpi0 acpi0 60878 464703 0 0 3 0x40014200 idle1 5846 496702 0 0 3 0x14200 bored softnet 33975 196641 0 0 3 0x14200 bored systqmp 20759 318853 0 0 3 0x14200 bored systq 55338 117817 0 0 3 0x40014200 bored softclock 41918 28850 0 0 3 0x40014200 idle0 19815 439401 0 0 3 0x14200 bored smr 1 71639 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 56469 (syz-executor.1) thread 0xffff800022099530 (493515) exclusive rrwlock inode r = 0 (0xfffffd8063fc6708) locked @ /syzkaller/managers/multicore/kernel/sys/ufs/ufs/ufs_vnops.c:1547 #0 witness_lock+0x5a4 sys/kern/subr_witness.c:1201 #1 _rw_enter+0x43c sys/kern/kern_rwlock.c:280 #2 _rrw_enter+0x60 sys/kern/kern_rwlock.c:410 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:602 #4 vn_lock+0x6e sys/kern/vfs_vnops.c:549 #5 vget+0x1c3 sys/kern/vfs_subr.c:672 #6 ufs_ihashget+0x141 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x74 sys/ufs/ffs/ffs_vfsops.c:1323 #8 ufs_lookup+0x1575 sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x5b sys/kern/vfs_vops.c:90 #10 vfs_lookup+0x575 sys/kern/vfs_lookup.c:523 #11 namei+0x45f sys/kern/vfs_lookup.c:224 #12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1673 #13 syscall+0x576 mi_syscall sys/sys/syscall_mi.h:99 [inline] #13 syscall+0x576 sys/arch/amd64/amd64/trap.c:574 #14 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82376d70) locked @ /syzkaller/managers/multicore/kernel/sys/arch/amd64/amd64/trap.c:161 #0 witness_lock+0x5a4 sys/kern/subr_witness.c:1201 #1 ___mp_acquire_count+0x67 sys/kern/kern_lock.c:231 #2 mi_switch+0x3c2 sys/kern/sched_bsd.c:439 #3 sleep_finish+0x110 sys/kern/kern_synch.c:312 #4 _rw_enter+0x338 sys/kern/kern_rwlock.c:256 #5 _rrw_enter+0x60 sys/kern/kern_rwlock.c:410 #6 VOP_LOCK+0x4b sys/kern/vfs_vops.c:602 #7 vn_lock+0x6e sys/kern/vfs_vnops.c:549 #8 vget+0x1c3 sys/kern/vfs_subr.c:672 #9 ufs_ihashget+0x141 sys/ufs/ufs/ufs_ihash.c:119 #10 ffs_vget+0x74 sys/ufs/ffs/ffs_vfsops.c:1323 #11 ufs_lookup+0x1575 sys/ufs/ufs/ufs_lookup.c:487 #12 VOP_LOOKUP+0x5b sys/kern/vfs_vops.c:90 #13 vfs_lookup+0x575 sys/kern/vfs_lookup.c:523 #14 namei+0x45f sys/kern/vfs_lookup.c:224 #15 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1673 #16 syscall+0x576 mi_syscall sys/sys/syscall_mi.h:99 [inline] #16 syscall+0x576 sys/arch/amd64/amd64/trap.c:574 #17 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8063fc6b48) locked @ /syzkaller/managers/multicore/kernel/sys/ufs/ufs/ufs_vnops.c:1547 #0 witness_lock+0x5a4 sys/kern/subr_witness.c:1201 #1 _rw_enter+0x43c sys/kern/kern_rwlock.c:280 #2 _rrw_enter+0x60 sys/kern/kern_rwlock.c:410 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:602 #4 vn_lock+0x6e sys/kern/vfs_vnops.c:549 #5 vfs_lookup+0xec sys/kern/vfs_lookup.c:387 #6 namei+0x45f sys/kern/vfs_lookup.c:224 #7 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1673 #8 syscall+0x576 mi_syscall sys/sys/syscall_mi.h:99 [inline] #8 syscall+0x576 sys/arch/amd64/amd64/trap.c:574 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9540 6428K 6816K 78643K 12733 0 0 pcb 25 9K 11K 78643K 453 0 0 rtable 100 3K 4K 78643K 589 0 0 ifaddr 66 14K 15K 78643K 210 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1492 0 0 iov 0 0K 28K 78643K 133 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1192 75K 75K 78643K 2751 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 5K 78643K 13 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 0K 0K 78643K 132 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12628 0 0 file desc 6 17K 25K 78643K 1480 0 0 sigio 0 0K 0K 78643K 21 0 0 proc 54 51K 83K 78643K 587 0 0 subproc 64 65538K 67586K 78643K 308 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 ip_moptions 0 0K 0K 78643K 73 0 0 in_multi 33 2K 2K 78643K 131 0 0 ether_multi 1 0K 0K 78643K 8 0 0 mrt 0 0K 0K 78643K 6 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 78 344K 344K 78643K 78 0 0 exec 0 0K 1K 78643K 491 0 0 pfkey data 0 0K 0K 78643K 2 0 0 pagedep 1 8K 8K 78643K 1 0 0 inodedep 1 32K 32K 78643K 1 0 0 newblk 1 0K 0K 78643K 1 0 0 VM swap 7 26K 26K 78643K 7 0 0 UVM amap 94 21K 30K 78643K 5368 0 0 UVM aobj 37 3K 3K 78643K 39 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 0K 78643K 55 0 0 NDP 14 0K 0K 78643K 65 0 0 temp 185 2708K 2776K 78643K 7755 0 0 kqueue 0 0K 0K 78643K 2 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 11 0 7 1 0 1 1 0 8 0 inpcbpl 280 449 0 442 1 0 1 1 0 8 0 plimitpl 152 74 0 66 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtentry 112 105 0 65 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpcb 544 146 0 142 1 0 1 1 0 8 0 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 18 0 14 1 0 1 1 0 8 0 ppxss 1128 23 0 23 4 3 1 1 0 8 1 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 29 0 20 1 0 1 1 0 8 0 pfstkey 112 29 0 20 1 0 1 1 0 8 0 pfstate 328 29 0 20 2 0 2 2 0 8 0 pfrule 1360 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 256 490 0 299 12 0 12 12 0 8 0 art_table 32 491 0 299 2 0 2 2 0 8 0 art_node 16 104 0 70 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 4 1 0 1 1 0 8 0 semapl 112 128 0 118 1 0 1 1 0 8 0 shmpl 112 37 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 4523 0 3087 47 0 47 47 0 8 0 ffsino 272 4523 0 3087 99 2 97 97 0 8 0 nchpl 144 6630 0 4996 62 0 62 62 0 8 0 uvmvnodes 72 5301 0 0 97 0 97 97 0 8 0 vnodes 200 5301 0 0 279 0 279 279 0 8 0 namei 1024 19114 0 19113 3 2 1 1 0 8 0 percpumem 16 30 0 0 1 0 1 1 0 8 0 scsiplug 64 2 0 2 2 2 0 1 0 8 0 scxspl 192 17982 0 17982 15 14 1 7 0 8 1 sigapl 432 1660 0 1644 3 1 2 3 0 8 0 futexpl 56 17002 0 17002 1 0 1 1 0 8 1 knotepl 112 382 0 363 1 0 1 1 0 8 0 kqueuepl 104 251 0 249 1 0 1 1 0 8 0 pipepl 112 776 0 757 4 3 1 2 0 8 0 fdescpl 488 1661 0 1644 3 0 3 3 0 8 0 filepl 152 8524 0 8417 9 4 5 7 0 8 0 lockfpl 104 724 0 724 2 1 1 1 0 8 1 lockfspl 32 312 0 312 2 1 1 1 0 8 1 sessionpl 112 27 0 16 1 0 1 1 0 8 0 pgrppl 48 38 0 27 1 0 1 1 0 8 0 ucredpl 96 1266 0 1257 1 0 1 1 0 8 0 zombiepl 144 1644 0 1644 3 2 1 1 0 8 1 processpl 840 1677 0 1644 4 0 4 4 0 8 0 procpl 600 4505 0 4460 4 0 4 4 0 8 0 srpgc 64 43 0 43 5 5 0 1 0 8 0 sosppl 128 7 0 7 1 1 0 1 0 8 0 sockpl 384 840 0 821 6 3 3 4 0 8 1 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 140 0 0 17 2 15 17 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 198 0 0 9 0 9 9 0 8 0 bufpl 256 8547 0 1185 461 0 461 461 0 8 0 anonpl 16 159664 0 149069 80 33 47 60 0 125 2 amapchunkpl 152 9045 0 8926 27 19 8 15 0 158 2 amappl16 192 7459 0 6894 55 26 29 41 0 8 0 amappl15 184 412 0 408 1 0 1 1 0 8 0 amappl14 176 466 0 461 2 1 1 1 0 8 0 amappl13 168 155 0 155 2 2 0 1 0 8 0 amappl12 160 26 0 25 1 0 1 1 0 8 0 amappl11 152 43 0 25 1 0 1 1 0 8 0 amappl10 144 688 0 683 1 0 1 1 0 8 0 amappl9 136 617 0 614 1 0 1 1 0 8 0 amappl8 128 202 0 182 1 0 1 1 0 8 0 amappl7 120 664 0 658 1 0 1 1 0 8 0 amappl6 112 66 0 60 1 0 1 1 0 8 0 amappl5 104 131 0 117 1 0 1 1 0 8 0 amappl4 96 2053 0 2016 2 1 1 2 0 8 0 amappl3 88 560 0 553 1 0 1 1 0 8 0 amappl2 80 13674 0 13612 3 1 2 2 0 8 0 amappl1 72 43491 0 43043 26 16 10 20 0 8 0 amappl 72 4817 0 4775 1 0 1 1 0 75 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma64 64 259 0 259 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 17 0 17 1 1 0 1 0 8 0 aobjpl 64 38 0 2 1 0 1 1 0 8 0 uaddrrnd 24 1661 0 1644 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1661 0 1644 1 0 1 1 0 8 0 vmmpekpl 168 16878 0 16852 2 0 2 2 0 8 0 vmmpepl 168 180757 0 179109 146 66 80 90 0 357 6 vmsppl 360 1660 0 1644 2 0 2 2 0 8 0 pdppl 4096 3330 0 3288 6 0 6 6 0 8 0 pvpl 32 450459 0 436585 182 56 126 149 0 265 13 pmappl 232 1660 0 1644 2 1 1 2 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 622 0 9 18 0 18 18 0 8 0