uvm_fault(0xffffffff828ea190, 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(0xffffffff828ea190, 0xa, 0, 1) -> e vio_rxeof(ffff80000017c000) at vio_rxeof+0x191 sys/dev/pv/if_vio.c:1018 end trace frame: 0xffff800020da9b80, 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(ffff800020da9be0,ffff800000256b80) at intr_handler+0x8f sys/arch/amd64/amd64/intr.c:536 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x36 kd_curproc sys/dev/kcov.c:411 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x36 sys/dev/kcov.c:79 if_input_process(ffff80000017c2a8,ffff800020da9d58) at if_input_process+0xda sys/net/if.c:832 ifiq_process(ffff80000017c6a8) at ifiq_process+0x80 sys/net/ifq.c:768 taskq_thread(ffff80000002c000) at taskq_thread+0xec sys/kern/kern_task.c:437 end trace frame: 0x0, count: -8 ddb{0}> show registers rdi 0xc rsi 0xc rbp 0xffff800020da9b20 rbx 0xffff80000017c000 rdx 0 rcx 0xffffffff82742ff0 cpu_info_full_primary+0x1ff0 rax 0xffffffff82742ff0 cpu_info_full_primary+0x1ff0 r8 0x2 r9 0 r10 0xb8c084c60fe19a9 r11 0xfef2dfba3d90dc7b r12 0xffff800000024c00 r13 0xc r14 0xfffffd806a7e2100 r15 0 rip 0xffffffff815cb8e1 vio_rxeof+0x191 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020da9a90 ss 0x10 vio_rxeof+0x191: movzwl 0xa(%r15),%eax ddb{0}> show proc PROC (softnet) pid=480170 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020d88000,0xffff800020d889d0 process=0xffff800020d8b360 user=0xffff800020da4000, vmspace=0xffffffff828ea190 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=1 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 38304 98509 59939 60928 7 0x10 syz-executor.0 38304 361878 59939 60928 3 0x4000090 rest syz-executor.0 59939 26639 23363 0 3 0x82 nanosleep syz-executor.0 24824 247982 0 0 3 0x14280 nfsidl nfsio 66307 218061 0 0 3 0x14280 nfsidl nfsio 14145 43994 0 0 3 0x14280 nfsidl nfsio 81733 386714 0 0 3 0x14280 nfsidl nfsio 8045 84235 0 0 3 0x14280 nfsidl nfsio 38192 225911 0 0 3 0x14280 nfsidl nfsio 88565 69666 0 0 3 0x14280 nfsidl nfsio 39012 117458 0 0 3 0x14280 nfsidl nfsio 17253 448443 0 0 3 0x14280 nfsidl nfsio 20812 249871 0 0 3 0x14280 nfsidl nfsio 74164 14535 0 0 3 0x14280 nfsidl nfsio 87817 495285 0 0 3 0x14280 nfsidl nfsio 87290 292926 0 0 3 0x14280 nfsidl nfsio 65751 165922 0 0 3 0x14280 nfsidl nfsio 17289 338283 0 0 3 0x14280 nfsidl nfsio 5452 208901 0 0 3 0x14280 nfsidl nfsio 28083 491730 0 0 3 0x14280 nfsidl nfsio 99051 276030 0 0 3 0x14280 nfsidl nfsio 53932 440014 0 0 3 0x14280 nfsidl nfsio 61691 478547 0 0 3 0x14280 nfsidl nfsio 74401 449163 0 0 3 0x14200 bored sosplice 68527 18637 23363 0 3 0x2 biowait syz-executor.1 23363 492006 21587 0 3 0x82 nanosleep syz-fuzzer 23363 303917 21587 0 3 0x4000082 nanosleep syz-fuzzer 23363 298809 21587 0 3 0x4000082 kqread syz-fuzzer 23363 185068 21587 0 3 0x4000082 thrsleep syz-fuzzer 23363 301124 21587 0 3 0x4000082 thrsleep syz-fuzzer 23363 475581 21587 0 3 0x4000082 thrsleep syz-fuzzer 23363 228029 21587 0 3 0x4000082 thrsleep syz-fuzzer 23363 202329 21587 0 3 0x4000082 thrsleep syz-fuzzer 23363 139871 21587 0 3 0x4000082 thrsleep syz-fuzzer 23363 478736 21587 0 3 0x4000082 thrsleep syz-fuzzer 21587 266495 58205 0 3 0x10008a pause ksh 58205 487924 83297 0 3 0x92 select sshd 10932 228327 1 0 3 0x100083 ttyin getty 83297 340020 1 0 3 0x80 select sshd 64730 334815 49972 74 3 0x100092 bpf pflogd 49972 246189 1 0 3 0x80 netio pflogd 89939 227801 92549 73 3 0x100090 kqread syslogd 92549 308568 1 0 3 0x100082 netio syslogd 95852 13373 1 77 3 0x100090 poll dhclient 34819 491331 1 0 3 0x80 poll dhclient 43790 288032 0 0 3 0x14200 bored smr 38019 441679 0 0 3 0x14200 pgzero zerothread 1346 216156 0 0 3 0x14200 aiodoned aiodoned 88100 9926 0 0 3 0x14200 syncer update 43154 512980 0 0 3 0x14200 cleaner cleaner 6702 196721 0 0 3 0x14200 reaper reaper 72941 195528 0 0 3 0x14200 pgdaemon pagedaemon 68526 291445 0 0 3 0x14200 bored crynlk 80479 467433 0 0 3 0x14200 bored crypto 24501 348269 0 0 3 0x40014200 acpi0 acpi0 70947 153749 0 0 3 0x40014200 idle1 *66415 480170 0 0 7 0x14200 softnet 15297 454126 0 0 3 0x14200 bored systqmp 43840 394178 0 0 3 0x14200 bored systq 58515 48379 0 0 3 0x40014200 bored softclock 81105 289264 0 0 3 0x40014200 idle0 1 292777 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 68527 (syz-executor.1) thread 0xffff800020ddd388 (18637) exclusive rrwlock inode r = 0 (0xfffffd8074775e78) #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 (0xfffffd806b1dc5e8) #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 66415 (softnet) thread 0xffff800020d884e0 (480170) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff828e6a68) #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 #3 __sanitizer_cov_trace_pc+0x36 kd_curproc sys/dev/kcov.c:411 [inline] #3 __sanitizer_cov_trace_pc+0x36 sys/dev/kcov.c:79 #4 if_input_process+0xda sys/net/if.c:832 #5 ifiq_process+0x80 sys/net/ifq.c:768 #6 taskq_thread+0xec sys/kern/kern_task.c:437 #7 proc_trampoline+0x1c exclusive rwlock netlock r = 0 (0xffffffff82726938) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 if_input_process+0xa1 sys/net/if.c:832 #2 ifiq_process+0x80 sys/net/ifq.c:768 #3 taskq_thread+0xec sys/kern/kern_task.c:437 #4 proc_trampoline+0x1c shared rwlock softnet r = 0 (0xffff80000002c070) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 taskq_thread+0xdf sys/kern/kern_task.c:436 #2 proc_trampoline+0x1c ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9538 6447K 7538K 78643K 12900 0 pcb 13 8K 8K 78643K 230 0 rtable 142 18K 19K 78643K 734 0 ifaddr 109 21K 21K 78643K 266 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 75 0 ioctlops 0 0K 4K 78643K 1659 0 iov 0 0K 16K 78643K 305 0 mount 1 1K 1K 78643K 1 0 vnodes 1222 77K 77K 78643K 1851 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 24 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 375 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 1326 0 sigio 0 0K 0K 78643K 86 0 proc 62 63K 95K 78643K 632 0 subproc 32 2K 2K 78643K 68 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 79 0 in_multi 97 4K 4K 78643K 336 0 ether_multi 1 0K 0K 78643K 22 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 61 281K 281K 78643K 61 0 exec 0 0K 1K 78643K 306 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 139 88K 97K 78643K 5398 0 UVM aobj 20 7K 7K 78643K 38 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 96 0 NDP 15 0K 0K 78643K 73 0 temp 145 3869K 3937K 78643K 22869 0 kqueue 3 4K 9K 78643K 37 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 13 0 5 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 89 0 87 1 0 1 1 0 8 0 rtentry 112 155 0 109 2 0 2 2 0 8 0 unpcb 120 702 0 690 2 1 1 2 0 8 0 syncache 264 13 0 13 5 5 0 1 0 8 0 sackhl 24 2 0 2 2 2 0 1 0 8 0 tcpqe 32 1246 0 1246 4 4 0 1 0 8 0 tcpcb 544 720 0 708 4 3 1 2 0 8 0 inpcb 296 1596 0 1588 5 3 2 2 0 8 1 ip6q 72 2 0 2 1 1 0 1 0 8 0 ip6af 40 6 0 6 1 1 0 1 0 8 0 nd6 48 57 0 51 1 0 1 1 0 8 0 pkpcb 40 12 0 12 5 5 0 1 0 8 0 ppxss 1136 1 0 1 1 1 0 1 0 8 0 pfstscr 40 3 0 3 2 2 0 1 0 8 0 pffrag 232 6 0 6 2 2 0 1 0 482 0 pffrnode 88 6 0 6 2 2 0 1 0 8 0 pffrent 40 186 0 186 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 50 0 38 4 3 1 2 0 8 0 pfstitem 24 60 0 58 1 0 1 1 0 8 0 pfstkey 112 66 0 64 1 0 1 1 0 8 0 pfstate 328 62 0 60 3 2 1 3 0 8 0 pfrule 1360 50 0 33 3 1 2 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 704 0 493 21 6 15 15 0 8 0 art_table 32 706 0 493 2 0 2 2 0 8 0 art_node 16 154 0 111 1 0 1 1 0 8 0 sysvmsgpl 40 68 0 35 1 0 1 1 0 8 0 semapl 112 373 0 363 1 0 1 1 0 8 0 shmpl 112 35 0 18 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3063 0 1665 89 0 89 89 0 8 0 ffsino 272 3063 0 1665 96 1 95 95 0 8 0 nchpl 144 5391 0 3794 60 0 60 60 0 8 0 uvmvnodes 72 3622 0 0 66 0 66 66 0 8 0 vnodes 208 3622 0 0 191 0 191 191 0 8 0 namei 1024 15287 0 15287 2 1 1 1 0 8 1 percpumem 16 48 0 16 1 0 1 1 0 8 0 vcpupl 1984 5 0 0 1 0 1 1 0 8 0 vmpool 560 11 0 6 2 1 1 1 0 8 0 pfiaddrpl 120 26 0 14 2 1 1 1 0 8 0 scxspl 192 15607 0 15606 10 9 1 7 0 8 0 plimitpl 152 104 0 96 1 0 1 1 0 8 0 sigapl 424 1557 0 1505 7 0 7 7 0 8 0 futexpl 56 22557 0 22557 2 1 1 1 0 8 1 knotepl 112 125 0 106 1 0 1 1 0 8 0 kqueuepl 144 135 0 131 1 0 1 1 0 8 0 pipepl 304 553 0 543 9 7 2 2 0 8 1 fdescpl 496 1520 0 1504 3 0 3 3 0 8 0 filepl 152 9691 0 9588 8 3 5 6 0 8 0 lockfpl 104 253 0 252 1 0 1 1 0 8 0 lockfspl 48 83 0 82 1 0 1 1 0 8 0 sessionpl 112 20 0 9 1 0 1 1 0 8 0 pgrppl 48 32 0 21 1 0 1 1 0 8 0 ucredpl 96 726 0 716 1 0 1 1 0 8 0 zombiepl 144 1505 0 1505 2 1 1 1 0 8 1 processpl 992 1557 0 1505 7 0 7 7 0 8 0 procpl 624 4490 0 4428 6 0 6 6 0 8 0 srpgc 64 2 0 2 1 1 0 1 0 8 0 sosppl 128 6 0 6 4 4 0 1 0 8 0 sockpl 400 2409 0 2387 12 9 3 7 0 8 0 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 21 0 0 2 0 2 2 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 12 0 0 2 0 2 2 0 8 0 mcl4k 4096 9 0 0 2 0 2 2 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 209 0 0 24 0 24 24 0 8 0 mtagpl 96 143 0 0 4 0 4 4 0 8 0 mbufpl 256 636 0 0 31 0 31 31 0 8 0 bufpl 280 7138 0 903 446 0 446 446 0 8 0 anonpl 16 175164 0 157570 143 55 88 89 0 124 13 amapchunkpl 152 9803 0 9647 48 38 10 20 0 158 2 amappl16 192 6799 0 5835 87 30 57 61 0 8 8 amappl15 184 155 0 152 1 0 1 1 0 8 0 amappl14 176 24 0 19 1 0 1 1 0 8 0 amappl13 168 401 0 398 1 0 1 1 0 8 0 amappl12 160 373 0 372 2 1 1 1 0 8 0 amappl11 152 712 0 695 1 0 1 1 0 8 0 amappl10 144 172 0 165 1 0 1 1 0 8 0 amappl9 136 491 0 489 1 0 1 1 0 8 0 amappl8 128 412 0 378 3 1 2 2 0 8 0 amappl7 120 286 0 269 1 0 1 1 0 8 0 amappl6 112 676 0 672 1 0 1 1 0 8 0 amappl5 104 1061 0 1045 1 0 1 1 0 8 0 amappl4 96 905 0 874 1 0 1 1 0 8 0 amappl3 88 529 0 523 1 0 1 1 0 8 0 amappl2 80 11083 0 11008 2 0 2 2 0 8 0 amappl1 72 56208 0 55753 23 13 10 18 0 8 0 amappl 80 4774 0 4726 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 37 0 18 1 0 1 1 0 8 0 uaddrrnd 24 1531 0 1510 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1531 0 1510 1 0 1 1 0 8 0 vmmpekpl 168 16557 0 16515 3 0 3 3 0 8 0 vmmpepl 168 205720 0 203561 201 93 108 136 0 357 7 vmsppl 368 1530 0 1510 3 1 2 3 0 8 0 pdppl 4096 3069 0 3025 7 1 6 7 0 8 0 pvpl 32 494925 0 474281 315 109 206 212 0 265 36 pmappl 232 1530 0 1510 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 313 0 25 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(ffff800020da9be0,ffff800000256b80) at intr_handler+0x8f sys/arch/amd64/amd64/intr.c:536 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x36 kd_curproc sys/dev/kcov.c:411 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x36 sys/dev/kcov.c:79 if_input_process(ffff80000017c2a8,ffff800020da9d58) at if_input_process+0xda sys/net/if.c:832 ifiq_process(ffff80000017c6a8) at ifiq_process+0x80 sys/net/ifq.c:768 taskq_thread(ffff80000002c000) at taskq_thread+0xec sys/kern/kern_task.c:437 end trace frame: 0x0, count: -8 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 end of kernel end trace frame: 0x7f7ffffdc9b0, count: -3