uvm_fault(0xfffffd806e8f98a8, 0xa, 0, 1) -> e kernel: page fault trap, code=0 Stopped at vio_rxeof+0x191: movzwl 0xa(%r15),%eax ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xfffffd806e8f98a8, 0xa, 0, 1) -> e vio_rxeof(ffff80000017c000) at vio_rxeof+0x191 sys/dev/pv/if_vio.c:1018 end trace frame: 0xffff800020e9c070, count: 0 ddb{0}> trace vio_rxeof(ffff80000017c000) at vio_rxeof+0x191 sys/dev/pv/if_vio.c:1018 vio_rx_intr(ffff80000017c050) at vio_rx_intr+0x4d sys/dev/pv/if_vio.c:1056 intr_handler(ffff800020e9c0d0,ffff800000256b80) at intr_handler+0x8f sys/arch/amd64/amd64/intr.c:536 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f end of kernel end trace frame: 0xc00003adf8, count: -4 ddb{0}> show registers rdi 0xc rsi 0xc rbp 0xffff800020e9c010 rbx 0xffff80000017c000 rdx 0 rcx 0xffffffff82722ff0 cpu_info_full_primary+0x1ff0 rax 0xffffffff82722ff0 cpu_info_full_primary+0x1ff0 r8 0x2 r9 0 r10 0xefc5df66098a9dab r11 0xf02da767eb8ec59e r12 0xffff800000024c00 r13 0xc r14 0xfffffd8068171b00 r15 0 rip 0xffffffff822413e1 vio_rxeof+0x191 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020e9bf80 ss 0 vio_rxeof+0x191: movzwl 0xa(%r15),%eax ddb{0}> show proc PROC (syz-fuzzer) pid=318429 stat=onproc flags process=2 proc=4000000 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020ddd5f8,0xffff800020ddc768 process=0xffff8000ffffe018 user=0xffff800020e97000, vmspace=0xfffffd806e8f98a8 estcpu=0, cpticks=0, pctcpu=0.18 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 67223 239144 0 0 3 0x14280 nfsidl nfsio 86751 164516 0 0 3 0x14280 nfsidl nfsio 30654 349917 0 0 3 0x14280 nfsidl nfsio 86831 87553 0 0 3 0x14280 nfsidl nfsio 53993 123857 0 0 3 0x14280 nfsidl nfsio 14359 173933 0 0 3 0x14280 nfsidl nfsio 71161 197012 0 0 3 0x14280 nfsidl nfsio 80267 459170 0 0 3 0x14280 nfsidl nfsio 79227 523491 0 0 3 0x14280 nfsidl nfsio 99459 154016 0 0 3 0x14280 nfsidl nfsio 74516 63246 0 0 3 0x14280 nfsidl nfsio 50263 507906 0 0 3 0x14280 nfsidl nfsio 24324 52486 0 0 3 0x14280 nfsidl nfsio 14858 324132 0 0 3 0x14280 nfsidl nfsio 29897 157778 0 0 3 0x14280 nfsidl nfsio 940 434513 0 0 3 0x14280 nfsidl nfsio 56491 344959 0 0 3 0x14280 nfsidl nfsio 89264 464642 0 0 3 0x14280 nfsidl nfsio 55481 199883 0 0 3 0x14280 nfsidl nfsio 21140 106397 0 0 3 0x14280 nfsidl nfsio 12240 440297 0 0 3 0x14200 bored sosplice 82617 425729 66480 0 3 0x2 biowait syz-executor.1 88791 486802 66480 0 2 0x2 syz-executor.0 66480 403506 57498 0 3 0x82 thrsleep syz-fuzzer 66480 500000 57498 0 3 0x4000082 nanosleep syz-fuzzer 66480 176735 57498 0 3 0x4000082 kqread syz-fuzzer 66480 4437 57498 0 3 0x4000082 thrsleep syz-fuzzer 66480 172172 57498 0 3 0x4000082 thrsleep syz-fuzzer 66480 51732 57498 0 3 0x4000082 nanosleep syz-fuzzer *66480 318429 57498 0 7 0x4000002 syz-fuzzer 66480 277102 57498 0 3 0x4000082 thrsleep syz-fuzzer 66480 79926 57498 0 3 0x4000082 thrsleep syz-fuzzer 66480 344437 57498 0 3 0x4000082 thrsleep syz-fuzzer 66480 262807 57498 0 3 0x4000082 thrsleep syz-fuzzer 57498 197315 51349 0 3 0x10008a pause ksh 51349 318409 63772 0 7 0x12 sshd 25595 31332 1 0 3 0x100083 ttyin getty 63772 422236 1 0 3 0x80 select sshd 40567 153412 73182 74 3 0x100092 bpf pflogd 73182 152154 1 0 3 0x80 netio pflogd 53083 148594 34461 73 3 0x100090 kqread syslogd 34461 347929 1 0 3 0x100082 netio syslogd 60511 70776 1 77 3 0x100090 poll dhclient 88395 37828 1 0 3 0x80 poll dhclient 52846 218600 0 0 3 0x14200 bored smr 92304 325765 0 0 3 0x14200 pgzero zerothread 27913 273697 0 0 3 0x14200 aiodoned aiodoned 38864 490306 0 0 3 0x14200 syncer update 84552 202590 0 0 3 0x14200 cleaner cleaner 709 75174 0 0 3 0x14200 reaper reaper 17403 307111 0 0 3 0x14200 pgdaemon pagedaemon 54726 460252 0 0 3 0x14200 bored crynlk 61948 107642 0 0 3 0x14200 bored crypto 72843 410101 0 0 3 0x40014200 acpi0 acpi0 58544 309996 0 0 3 0x40014200 idle1 46313 190272 0 0 3 0x14200 bored softnet 28537 459300 0 0 3 0x14200 bored systqmp 65661 80084 0 0 3 0x14200 bored systq 77589 522093 0 0 3 0x40014200 bored softclock 79252 243064 0 0 3 0x40014200 idle0 1 205734 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 82617 (syz-executor.1) thread 0xffff800020e0a608 (425729) exclusive rrwlock inode r = 0 (0xfffffd80682493d0) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 rw_enter+0x453 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603 #4 vn_lock+0x81 sys/kern/vfs_vnops.c:575 #5 vget+0x1c8 sys/kern/vfs_subr.c:671 #6 ufs_ihashget+0x141 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x74 sys/ufs/ffs/ffs_vfsops.c:1329 #8 ufs_lookup+0x14b7 sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x5b sys/kern/vfs_vops.c:90 #10 vfs_lookup+0x7a6 sys/kern/vfs_lookup.c:568 #11 namei+0x63c sys/kern/vfs_lookup.c:249 #12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1853 #13 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8068249810) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 rw_enter+0x453 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603 #4 vn_lock+0x81 sys/kern/vfs_vnops.c:575 #5 vfs_lookup+0xe6 sys/kern/vfs_lookup.c:419 #6 namei+0x63c sys/kern/vfs_lookup.c:249 #7 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1853 #8 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #9 Xsyscall+0x128 Process 66480 (syz-fuzzer) thread 0xffff800020ddc278 (318429) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff8292f068) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 #2 Xintr_ioapic_edge19_untramp+0x19f ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9515 6414K 6804K 78643K 11273 0 pcb 13 8K 8K 78643K 118 0 rtable 106 4K 6K 78643K 398 0 ifaddr 84 17K 17K 78643K 141 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 55 0 ioctlops 0 0K 4K 78643K 1523 0 iov 0 0K 16K 78643K 66 0 mount 1 1K 1K 78643K 1 0 vnodes 1222 77K 77K 78643K 1430 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 17 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 128 0 dirhash 9 1K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 630 0 proc 63 63K 95K 78643K 461 0 subproc 32 2K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 59 0 in_multi 73 3K 3K 78643K 172 0 ether_multi 1 0K 0K 78643K 10 0 mrt 0 0K 0K 78643K 6 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 259 0 pfkey data 0 0K 0K 78643K 2 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 121 55K 55K 78643K 2977 0 UVM aobj 35 4K 4K 78643K 45 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 84 0 NDP 12 0K 0K 78643K 35 0 temp 130 3864K 3928K 78643K 5510 0 kqueue 8 14K 14K 78643K 27 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 8 0 1 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 49 0 47 1 0 1 1 0 8 0 rtentry 112 92 0 50 2 0 2 2 0 8 0 unpcb 120 431 0 420 1 0 1 1 0 8 0 syncache 264 11 0 11 5 4 1 1 0 8 1 tcpqe 32 758 0 758 2 2 0 1 0 8 0 tcpcb 544 192 0 183 4 2 2 2 0 8 0 inpcb 296 656 0 645 4 2 2 2 0 8 1 rttmr 72 3 0 3 3 2 1 1 0 8 1 nd6 48 25 0 21 1 0 1 1 0 8 0 pkpcb 40 8 0 8 2 2 0 1 0 8 0 pffrag 232 8 0 8 3 3 0 1 0 482 0 pffrnode 88 8 0 8 3 3 0 1 0 8 0 pffrent 40 150 0 150 3 3 0 1 0 8 0 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 13 0 11 2 1 1 1 0 8 0 pftag 88 2 0 2 1 0 1 1 0 8 1 pfstitem 24 42 0 15 1 0 1 1 0 8 0 pfstkey 112 44 0 17 2 0 2 2 0 8 0 pfstate 328 43 0 16 4 1 3 4 0 8 0 pfrule 1360 29 0 21 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 414 0 239 14 2 12 14 0 8 0 art_table 32 415 0 239 2 0 2 2 0 8 0 art_node 16 91 0 52 1 0 1 1 0 8 0 sysvmsgpl 40 17 0 8 1 0 1 1 0 8 0 semapl 112 118 0 108 1 0 1 1 0 8 0 shmpl 112 42 0 10 1 0 1 1 0 8 0 dirhash 1024 17 0 10 3 1 2 3 0 8 0 dino2pl 256 2156 0 753 89 0 89 89 0 8 0 ffsino 272 2156 0 753 95 1 94 94 0 8 0 nchpl 144 3703 0 2090 60 0 60 60 0 8 0 uvmvnodes 72 2366 0 0 44 0 44 44 0 8 0 vnodes 208 2366 0 0 125 0 125 125 0 8 0 namei 1024 9644 0 9644 3 2 1 1 0 8 1 percpumem 16 38 0 6 1 0 1 1 0 8 0 vcpupl 1984 3 0 0 1 0 1 1 0 8 0 vmpool 560 7 0 4 1 0 1 1 0 8 0 pfiaddrpl 120 5 0 3 2 1 1 1 0 8 0 scxspl 192 9492 0 9491 5 4 1 4 0 8 0 plimitpl 152 52 0 44 1 0 1 1 0 8 0 sigapl 424 866 0 815 6 0 6 6 0 8 0 futexpl 56 8893 0 8893 2 1 1 1 0 8 1 knotepl 112 96 0 77 1 0 1 1 0 8 0 kqueuepl 144 60 0 52 1 0 1 1 0 8 0 pipepl 304 152 0 142 2 1 1 2 0 8 0 fdescpl 496 830 0 815 3 0 3 3 0 8 0 filepl 152 5178 0 5078 7 2 5 6 0 8 1 lockfpl 104 128 0 127 1 0 1 1 0 8 0 lockfspl 48 47 0 46 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 22 0 11 1 0 1 1 0 8 0 ucredpl 96 419 0 410 1 0 1 1 0 8 0 zombiepl 144 815 0 815 2 1 1 1 0 8 1 processpl 992 866 0 815 8 1 7 7 0 8 0 procpl 624 2209 0 2148 6 0 6 6 0 8 0 sosppl 128 10 0 10 3 3 0 1 0 8 0 sockpl 400 1144 0 1123 9 5 4 6 0 8 1 mcl64k 65536 9 0 0 2 0 2 2 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 10 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 7 0 0 1 0 1 1 0 8 0 mcl4k 4096 11 0 0 2 0 2 2 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 222 0 0 27 0 27 27 0 8 0 mtagpl 96 24 0 0 1 0 1 1 0 8 0 mbufpl 256 512 0 0 30 0 30 30 0 8 0 bufpl 280 4479 0 135 311 0 311 311 0 8 0 anonpl 16 94024 0 76522 89 17 72 87 0 124 1 amapchunkpl 152 4536 0 4375 12 4 8 12 0 158 0 amappl16 192 3844 0 2914 60 12 48 59 0 8 1 amappl15 184 309 0 307 2 1 1 1 0 8 0 amappl14 176 31 0 24 1 0 1 1 0 8 0 amappl13 168 28 0 25 1 0 1 1 0 8 0 amappl12 160 8 0 7 4 3 1 1 0 8 0 amappl11 152 57 0 41 1 0 1 1 0 8 0 amappl10 144 23 0 17 1 0 1 1 0 8 0 amappl9 136 684 0 681 1 0 1 1 0 8 0 amappl8 128 647 0 621 1 0 1 1 0 8 0 amappl7 120 118 0 107 1 0 1 1 0 8 0 amappl6 112 24 0 20 1 0 1 1 0 8 0 amappl5 104 733 0 719 1 0 1 1 0 8 0 amappl4 96 498 0 465 2 1 1 2 0 8 0 amappl3 88 128 0 121 1 0 1 1 0 8 0 amappl2 80 6012 0 5951 2 0 2 2 0 8 0 amappl1 72 33494 0 33074 23 13 10 18 0 8 0 amappl 80 2445 0 2398 2 0 2 2 0 84 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 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 64 44 0 10 1 0 1 1 0 8 0 uaddrrnd 24 837 0 819 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 837 0 819 1 0 1 1 0 8 0 vmmpekpl 168 10736 0 10693 3 0 3 3 0 8 0 vmmpepl 168 113065 0 111079 132 33 99 121 0 357 2 vmsppl 368 836 0 819 2 0 2 2 0 8 0 pdppl 4096 1681 0 1641 7 1 6 6 0 8 0 pvpl 32 291623 0 270939 209 20 189 208 0 265 19 pmappl 232 836 0 819 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 300 0 17 9 0 9 9 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace vio_rxeof(ffff80000017c000) at vio_rxeof+0x191 sys/dev/pv/if_vio.c:1018 vio_rx_intr(ffff80000017c050) at vio_rx_intr+0x4d sys/dev/pv/if_vio.c:1056 intr_handler(ffff800020e9c0d0,ffff800000256b80) at intr_handler+0x8f sys/arch/amd64/amd64/intr.c:536 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f end of kernel end trace frame: 0xc00003adf8, count: -4 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d70ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff8292ee60) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff8292ee60) at __mp_lock+0x127 sys/kern/kern_lock.c:147 syscall(ffff800020e03f90) at syscall+0x400 mi_syscall sys/sys/syscall_mi.h:93 [inline] syscall(ffff800020e03f90) at syscall+0x400 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff0930, count: -6