uvm_fault(0xfffffd806e9078a8, 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(0xfffffd806e9078a8, 0xa, 0, 1) -> e vio_rxeof(ffff80000017c000) at vio_rxeof+0x191 sys/dev/pv/if_vio.c:1018 end trace frame: 0xffff800020e62990, 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(ffff800020e629f0,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: 0xc0032b7b60, count: -4 ddb{0}> show registers rdi 0xc rsi 0xc rbp 0xffff800020e62930 rbx 0xffff80000017c000 rdx 0 rcx 0xffffffff82742ff0 cpu_info_full_primary+0x1ff0 rax 0xffffffff82742ff0 cpu_info_full_primary+0x1ff0 r8 0x2 r9 0 r10 0x8a0e04f23c69584c r11 0xbcb1abcb28abf815 r12 0xffff800000024c00 r13 0xc r14 0xfffffd807e890e00 r15 0 rip 0xffffffff815cb8e1 vio_rxeof+0x191 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020e628a0 ss 0 vio_rxeof+0x191: movzwl 0xa(%r15),%eax ddb{0}> show proc PROC (syz-fuzzer) pid=2404 stat=onproc flags process=2 proc=0 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020e3f9d0,0xffff800020e40130 process=0xffff8000ffffebb8 user=0xffff800020e5d000, vmspace=0xfffffd806e9078a8 estcpu=36, cpticks=76, pctcpu=3.78 user=0, sys=0, intr=1 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 62901 191937 0 0 3 0x14280 nfsidl nfsio 16756 71193 0 0 3 0x14280 nfsidl nfsio 83288 473595 0 0 3 0x14280 nfsidl nfsio 8700 138461 0 0 3 0x14280 nfsidl nfsio 79177 284410 0 0 3 0x14280 nfsidl nfsio 19175 56796 0 0 3 0x14280 nfsidl nfsio 33835 150084 0 0 3 0x14280 nfsidl nfsio 38209 20049 0 0 3 0x14280 nfsidl nfsio 34936 35547 0 0 3 0x14280 nfsidl nfsio 64876 302114 0 0 3 0x14280 nfsidl nfsio 52066 234831 0 0 3 0x14280 nfsidl nfsio 5222 193465 0 0 3 0x14280 nfsidl nfsio 44330 374965 0 0 3 0x14280 nfsidl nfsio 65077 418374 0 0 3 0x14280 nfsidl nfsio 74729 273386 0 0 3 0x14280 nfsidl nfsio 25719 387774 0 0 3 0x14280 nfsidl nfsio 60392 356831 0 0 3 0x14280 nfsidl nfsio 85605 67066 0 0 3 0x14280 nfsidl nfsio 26750 354787 0 0 3 0x14280 nfsidl nfsio 52255 26255 0 0 3 0x14280 nfsidl nfsio 64854 187451 0 0 3 0x14200 bored sosplice 1492 400374 1 0 3 0x100083 ttyin getty 36769 7818 11236 0 3 0x82 piperd syz-executor.1 35337 352974 11236 0 3 0x2 biowait syz-executor.0 *11236 2404 71253 0 7 0x2 syz-fuzzer 11236 390328 71253 0 3 0x4000082 nanosleep syz-fuzzer 11236 433415 71253 0 3 0x4000082 thrsleep syz-fuzzer 11236 505891 71253 0 3 0x4000082 thrsleep syz-fuzzer 11236 347257 71253 0 3 0x4000082 thrsleep syz-fuzzer 11236 387661 71253 0 3 0x4000082 thrsleep syz-fuzzer 11236 440919 71253 0 3 0x4000082 thrsleep syz-fuzzer 11236 366226 71253 0 3 0x4000082 thrsleep syz-fuzzer 11236 110855 71253 0 3 0x4000082 kqread syz-fuzzer 11236 417100 71253 0 3 0x4000082 thrsleep syz-fuzzer 11236 419013 71253 0 3 0x4000082 thrsleep syz-fuzzer 71253 457293 40571 0 3 0x10008a pause ksh 40571 42735 90655 0 3 0x92 select sshd 90655 235126 1 0 3 0x80 select sshd 71968 186624 49228 74 3 0x100092 bpf pflogd 49228 463538 1 0 3 0x80 netio pflogd 10129 394621 40153 73 3 0x100090 kqread syslogd 40153 294052 1 0 3 0x100082 netio syslogd 95325 25481 1 77 3 0x100090 poll dhclient 72010 341635 1 0 3 0x80 poll dhclient 96385 329400 0 0 3 0x14200 bored smr 88896 488841 0 0 3 0x14200 pgzero zerothread 37022 353502 0 0 3 0x14200 aiodoned aiodoned 7896 430750 0 0 3 0x14200 syncer update 716 476084 0 0 3 0x14200 cleaner cleaner 13418 418812 0 0 3 0x14200 reaper reaper 48525 346743 0 0 3 0x14200 pgdaemon pagedaemon 65497 262725 0 0 3 0x14200 bored crynlk 78807 501566 0 0 3 0x14200 bored crypto 11717 470667 0 0 3 0x40014200 acpi0 acpi0 13793 476848 0 0 7 0x40014200 idle1 40247 500229 0 0 3 0x14200 bored softnet 63563 113565 0 0 3 0x14200 bored systqmp 83883 7783 0 0 3 0x14200 bored systq 3757 509823 0 0 3 0x40014200 bored softclock 25602 263135 0 0 3 0x40014200 idle0 1 475245 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 35337 (syz-executor.0) thread 0xffff800020ddd5f8 (352974) exclusive rrwlock inode r = 0 (0xfffffd80685c7928) #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 (0xfffffd806841a920) #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 11236 (syz-fuzzer) thread 0xffff800020e3fc40 (2404) 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 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9541 6678K 7002K 78643K 13221 0 pcb 13 8K 8K 78643K 173 0 rtable 96 12K 13K 78643K 578 0 ifaddr 90 17K 18K 78643K 243 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 75 0 ioctlops 0 0K 4K 78643K 1655 0 iov 0 0K 16K 78643K 93 0 mount 1 1K 1K 78643K 1 0 vnodes 1231 77K 78K 78643K 2968 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 19 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 61 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 1104 0 sigio 0 0K 0K 78643K 16 0 proc 62 63K 95K 78643K 538 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 82 0 in_multi 91 4K 4K 78643K 265 0 ether_multi 1 0K 0K 78643K 21 0 mrt 1 0K 0K 78643K 7 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 283 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 151 73K 73K 78643K 4598 0 UVM aobj 52 4K 4K 78643K 67 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 107 0 NDP 14 0K 0K 78643K 49 0 temp 143 3866K 3934K 78643K 18223 0 kqueue 3 4K 16K 78643K 55 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 10 0 5 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 59 0 57 1 0 1 1 0 8 0 rtentry 112 110 0 77 2 0 2 2 0 8 0 unpcb 120 777 0 767 2 1 1 2 0 8 0 syncache 264 7 0 7 3 3 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 544 299 0 292 4 3 1 2 0 8 0 inpcb 296 1043 0 1029 3 1 2 3 0 8 0 rttmr 72 3 0 3 2 1 1 1 0 8 1 ip6q 72 3 0 3 2 2 0 1 0 8 0 ip6af 40 9 0 9 2 2 0 1 0 8 0 nd6 48 41 0 34 1 0 1 1 0 8 0 pkpcb 40 8 0 8 3 2 1 1 0 8 1 ppxss 1136 2 0 2 2 2 0 1 0 8 0 pffrag 232 3 0 3 3 3 0 1 0 482 0 pffrnode 88 3 0 3 3 3 0 1 0 8 0 pffrent 40 94 0 94 4 4 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 31 0 31 2 2 0 1 0 8 0 pfstitem 24 40 0 28 1 0 1 1 0 8 0 pfstkey 112 40 0 28 2 0 2 2 0 8 0 pfstate 328 40 0 28 4 1 3 4 0 8 1 pfrule 1360 29 0 23 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 565 0 362 22 6 16 17 0 8 1 art_table 32 567 0 362 3 1 2 3 0 8 0 art_node 16 109 0 82 1 0 1 1 0 8 0 sysvmsgpl 40 15 0 6 1 0 1 1 0 8 0 semupl 112 6 0 6 1 1 0 1 0 8 0 semapl 112 53 0 43 1 0 1 1 0 8 0 shmpl 112 64 0 15 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2803 0 1399 89 0 89 89 0 8 0 ffsino 272 2803 0 1399 96 1 95 95 0 8 0 nchpl 144 4563 0 2953 60 0 60 60 0 8 0 uvmvnodes 72 4487 0 0 82 0 82 82 0 8 0 vnodes 208 4487 0 0 237 0 237 237 0 8 0 namei 1024 13785 0 13785 3 2 1 1 0 8 1 percpumem 16 48 0 16 1 0 1 1 0 8 0 vcpupl 1984 6 0 0 1 0 1 1 0 8 0 vmpool 560 10 0 4 1 0 1 1 0 8 0 pfiaddrpl 120 9 0 9 2 2 0 1 0 8 0 scxspl 192 13862 0 13860 11 10 1 5 0 8 0 plimitpl 152 81 0 73 1 0 1 1 0 8 0 sigapl 424 1341 0 1290 6 0 6 6 0 8 0 futexpl 56 16573 0 16573 2 1 1 1 0 8 1 knotepl 112 125 0 106 1 0 1 1 0 8 0 kqueuepl 144 132 0 129 1 0 1 1 0 8 0 pipepl 304 227 0 217 6 4 2 2 0 8 1 fdescpl 496 1305 0 1290 3 0 3 3 0 8 0 filepl 152 7931 0 7831 8 3 5 6 0 8 1 lockfpl 104 265 0 264 1 0 1 1 0 8 0 lockfspl 48 77 0 76 1 0 1 1 0 8 0 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 40 0 29 1 0 1 1 0 8 0 ucredpl 96 791 0 782 1 0 1 1 0 8 0 zombiepl 144 1290 0 1290 2 1 1 1 0 8 1 processpl 992 1341 0 1290 8 1 7 7 0 8 0 procpl 624 3790 0 3729 7 1 6 6 0 8 1 sosppl 128 11 0 11 4 4 0 1 0 8 0 sockpl 400 1890 0 1864 9 4 5 5 0 8 2 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 14 0 0 2 0 2 2 0 8 0 mcl9k 9216 8 0 0 1 0 1 1 0 8 0 mcl8k 8192 8 0 0 1 0 1 1 0 8 0 mcl4k 4096 9 0 0 2 0 2 2 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 281 0 0 35 0 35 35 0 8 0 mtagpl 96 55 0 0 2 0 2 2 0 8 0 mbufpl 256 797 0 0 48 0 48 48 0 8 0 bufpl 280 5630 0 133 393 0 393 393 0 8 0 anonpl 16 126573 0 109067 81 8 73 78 0 124 0 amapchunkpl 152 7328 0 7171 14 5 9 12 0 158 0 amappl16 192 5121 0 4179 50 2 48 49 0 8 0 amappl15 184 577 0 575 1 0 1 1 0 8 0 amappl14 176 27 0 22 1 0 1 1 0 8 0 amappl13 168 28 0 25 1 0 1 1 0 8 0 amappl12 160 6 0 5 2 1 1 1 0 8 0 amappl11 152 58 0 43 1 0 1 1 0 8 0 amappl10 144 594 0 587 1 0 1 1 0 8 0 amappl9 136 887 0 884 1 0 1 1 0 8 0 amappl8 128 399 0 345 2 0 2 2 0 8 0 amappl7 120 693 0 681 1 0 1 1 0 8 0 amappl6 112 28 0 23 1 0 1 1 0 8 0 amappl5 104 1218 0 1202 1 0 1 1 0 8 0 amappl4 96 507 0 479 1 0 1 1 0 8 0 amappl3 88 154 0 149 1 0 1 1 0 8 0 amappl2 80 9595 0 9529 2 0 2 2 0 8 0 amappl1 72 48679 0 48251 23 13 10 18 0 8 0 amappl 80 4031 0 3985 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 66 0 15 1 0 1 1 0 8 0 uaddrrnd 24 1315 0 1294 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1315 0 1294 1 0 1 1 0 8 0 vmmpekpl 168 12181 0 12139 3 0 3 3 0 8 0 vmmpepl 168 174197 0 172154 126 26 100 116 0 357 1 vmsppl 368 1314 0 1294 3 1 2 3 0 8 0 pdppl 4096 2637 0 2594 8 2 6 7 0 8 0 pvpl 32 404970 0 384356 201 28 173 188 0 265 3 pmappl 232 1314 0 1294 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 340 0 23 10 0 10 10 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(ffff800020e629f0,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: 0xc0032b7b60, 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 acpicpu_idle() at acpicpu_idle+0x331 sys/dev/acpi/acpicpu.c:1187 sched_idle(ffff800020d70ff0) at sched_idle+0x3f7 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -5