uvm_fault(0xfffffd807effe8a0, 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(0xfffffd807effe8a0, 0xa, 0, 1) -> e vio_rxeof(ffff80000017c000) at vio_rxeof+0x191 sys/dev/pv/if_vio.c:1018 end trace frame: 0xffff8000230e3a00, 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(ffff8000230e3a60,ffff800000256b80) at intr_handler+0x8f sys/arch/amd64/amd64/intr.c:536 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f Xspllower() at Xspllower+0x19 pool_get(ffffffff828edcd8,2) at pool_get+0x15d sys/kern/subr_pool.c:587 pmap_enter(fffffd80641e8e98,5621b24e000,689b2000,1,20) at pmap_enter+0x16e uvm_fault(fffffd807effe8a0,5621b24a000,0,1) at uvm_fault+0x77b sys/uvm/uvm_fault.c:691 pageflttrap(ffff8000230e4060,1) at pageflttrap+0x1b8 sys/arch/amd64/amd64/trap.c:221 usertrap(ffff8000230e4060) at usertrap+0x21a sys/arch/amd64/amd64/trap.c:384 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffc7c90, count: -11 ddb{0}> show registers rdi 0xc rsi 0xc rbp 0xffff8000230e39a0 rbx 0xffff80000017c000 rdx 0 rcx 0xffffffff82780ff0 cpu_info_full_primary+0x1ff0 rax 0xffffffff82780ff0 cpu_info_full_primary+0x1ff0 r8 0x2 r9 0x1 r10 0x557e9c75ced37325 r11 0xea800101c1b44479 r12 0xffff800000024c00 r13 0xc r14 0xfffffd80682ff200 r15 0 rip 0xffffffff8229fe71 vio_rxeof+0x191 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000230e3910 ss 0 vio_rxeof+0x191: movzwl 0xa(%r15),%eax ddb{0}> show proc PROC (syz-executor.0) pid=445561 stat=onproc flags process=0 proc=0 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020e38128,0xffffffff828deb58 process=0xffff800020e9c020 user=0xffff8000230df000, vmspace=0xfffffd807effe8a0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=1 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *69652 445561 30751 0 7 0 syz-executor.0 48740 286949 38080 0 7 0x2 syz-executor.1 85342 355114 0 0 3 0x14200 bored sosplice 30751 127218 38080 0 2 0x2 syz-executor.0 38080 192339 4016 0 3 0x82 thrsleep syz-fuzzer 38080 115315 4016 0 3 0x4000082 nanosleep syz-fuzzer 38080 11112 4016 0 3 0x4000082 thrsleep syz-fuzzer 38080 129766 4016 0 3 0x4000082 thrsleep syz-fuzzer 38080 226620 4016 0 3 0x4000082 thrsleep syz-fuzzer 38080 516546 4016 0 3 0x4000082 thrsleep syz-fuzzer 38080 51751 4016 0 3 0x4000082 kqread syz-fuzzer 38080 455898 4016 0 3 0x4000082 thrsleep syz-fuzzer 38080 87728 4016 0 3 0x4000082 thrsleep syz-fuzzer 38080 474288 4016 0 3 0x4000082 nanosleep syz-fuzzer 4016 428876 12387 0 3 0x10008a pause ksh 12387 38376 99704 0 3 0x92 select sshd 5653 133227 1 0 3 0x100083 ttyin getty 99704 66177 1 0 3 0x80 select sshd 25562 325895 79030 74 3 0x100092 bpf pflogd 79030 210744 1 0 3 0x80 netio pflogd 30543 452909 75303 73 3 0x100090 kqread syslogd 75303 2344 1 0 3 0x100082 netio syslogd 25699 483729 0 0 3 0x14200 bored smr 38709 449677 0 0 2 0x14200 zerothread 62515 259791 0 0 3 0x14200 aiodoned aiodoned 68488 27386 0 0 3 0x14200 syncer update 31160 383584 0 0 3 0x14200 cleaner cleaner 18748 250458 0 0 3 0x14200 reaper reaper 90595 81152 0 0 3 0x14200 pgdaemon pagedaemon 75606 9072 0 0 3 0x14200 bored crynlk 74106 256816 0 0 3 0x14200 bored crypto 60481 337276 0 0 3 0x40014200 acpi0 acpi0 69443 471431 0 0 3 0x40014200 idle1 2732 328625 0 0 3 0x14200 bored softnet 60286 351073 0 0 3 0x14200 bored systqmp 249 26158 0 0 3 0x14200 bored systq 75302 143383 0 0 3 0x40014200 bored softclock 20434 67382 0 0 3 0x40014200 idle0 1 162746 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 69652 (syz-executor.0) thread 0xffff800020e38398 (445561) shared rwlock vmmaplk r = 0 (0xfffffd807effe8b8) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1448 #2 uvm_fault+0x7f sys/uvm/uvm_fault.c:524 #3 pageflttrap+0x1b8 sys/arch/amd64/amd64/trap.c:221 #4 usertrap+0x21a sys/arch/amd64/amd64/trap.c:384 #5 recall_trap+0x8 exclusive kernel_lock &kernel_lock r = 2 (0xffffffff828dfa20) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 #2 usertrap+0x21a sys/arch/amd64/amd64/trap.c:384 #3 recall_trap+0x8 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9505 6471K 7377K 78643K 12799 0 pcb 13 8K 8K 78643K 79 0 rtable 117 14K 14K 78643K 531 0 ifaddr 69 14K 15K 78643K 160 0 counters 43 33K 34K 78643K 65 0 ioctlops 0 0K 4K 78643K 1568 0 iov 0 0K 16K 78643K 37 0 mount 1 1K 1K 78643K 1 0 vnodes 1227 77K 77K 78643K 1813 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 10 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 18 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 674 0 sigio 0 0K 0K 78643K 8 0 proc 56 51K 95K 78643K 508 0 subproc 32 2K 2K 78643K 51 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 47 0 in_multi 39 2K 2K 78643K 121 0 ether_multi 1 0K 0K 78643K 10 0 mrt 0 0K 0K 78643K 4 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 1K 78643K 240 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 130 55K 56K 78643K 3106 0 UVM aobj 23 2K 2K 78643K 24 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 62 0 NDP 10 0K 0K 78643K 35 0 temp 130 3876K 3940K 78643K 5972 0 kqueue 3 4K 16K 78643K 35 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 4 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 158 0 158 2 1 1 1 0 8 1 rtentry 112 78 0 36 2 0 2 2 0 8 0 unpcb 120 281 0 273 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 22 0 22 1 1 0 1 0 8 0 tcpcb 544 162 0 158 1 0 1 1 0 8 0 inpcb 296 724 0 718 4 2 2 2 0 8 1 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 18 0 14 1 0 1 1 0 8 0 pkpcb 40 6 0 6 2 2 0 1 0 8 0 ppxss 1136 2 0 2 2 2 0 1 0 8 0 pffrag 232 3 0 2 2 1 1 1 0 482 0 pffrnode 88 3 0 2 2 1 1 1 0 8 0 pffrent 40 6 0 5 2 1 1 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 32 0 29 2 1 1 1 0 8 0 pftag 88 1 0 1 1 0 1 1 0 8 1 pfstitem 24 22 0 13 1 0 1 1 0 8 0 pfstkey 112 24 0 15 1 0 1 1 0 8 0 pfstate 328 23 0 14 2 0 2 2 0 8 0 pfsrctr 152 65 0 63 1 0 1 1 0 8 0 pfrule 1360 33 0 25 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 282 0 99 13 0 13 13 0 8 0 art_table 32 283 0 99 2 0 2 2 0 8 0 art_node 16 77 0 38 1 0 1 1 0 8 0 sysvmsgpl 40 47 0 8 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 10 0 0 1 0 1 1 0 8 0 shmpl 112 21 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2194 0 794 88 0 88 88 0 8 0 ffsino 272 2194 0 794 95 1 94 94 0 8 0 nchpl 144 3469 0 1873 60 0 60 60 0 8 0 uvmvnodes 72 2773 0 0 51 0 51 51 0 8 0 vnodes 208 2773 0 0 146 0 146 146 0 8 0 namei 1024 9399 0 9399 1 0 1 1 0 8 1 percpumem 16 43 0 11 1 0 1 1 0 8 0 vcpupl 1984 4 0 0 1 0 1 1 0 8 0 vmpool 560 8 0 4 2 1 1 1 0 8 0 pfiaddrpl 120 9 0 8 2 1 1 1 0 8 0 scxspl 192 9617 0 9617 12 9 3 7 0 8 3 plimitpl 152 46 0 39 1 0 1 1 0 8 0 sigapl 424 887 0 857 4 0 4 4 0 8 0 futexpl 56 9279 0 9279 1 0 1 1 0 8 1 knotepl 112 113 0 94 1 0 1 1 0 8 0 kqueuepl 144 62 0 59 1 0 1 1 0 8 0 pipepl 304 154 0 144 3 2 1 2 0 8 0 fdescpl 496 871 0 857 3 0 3 3 0 8 0 filepl 152 4872 0 4783 5 1 4 5 0 8 0 lockfpl 104 132 0 132 2 1 1 1 0 8 1 lockfspl 48 49 0 49 2 1 1 1 0 8 1 sessionpl 112 19 0 10 1 0 1 1 0 8 0 pgrppl 48 25 0 16 1 0 1 1 0 8 0 ucredpl 96 467 0 459 1 0 1 1 0 8 0 zombiepl 144 857 0 857 1 0 1 1 0 8 1 processpl 992 887 0 857 5 0 5 5 0 8 0 procpl 624 2267 0 2228 4 0 4 4 0 8 0 sosppl 128 9 0 9 3 2 1 1 0 8 1 sockpl 400 1171 0 1157 4 1 3 3 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 5 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 10 0 0 2 0 2 2 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 171 0 0 21 0 21 21 0 8 0 mtagpl 96 212 0 0 5 0 5 5 0 8 0 mbufpl 256 544 0 0 33 0 33 33 0 8 0 bufpl 280 4428 0 135 307 0 307 307 0 8 0 anonpl 16 100429 0 83320 87 17 70 85 0 124 0 amapchunkpl 152 4865 0 4696 19 11 8 12 0 158 0 amappl16 192 3327 0 2428 58 12 46 58 0 8 0 amappl15 184 298 0 297 1 0 1 1 0 8 0 amappl14 176 350 0 345 1 0 1 1 0 8 0 amappl13 168 35 0 32 1 0 1 1 0 8 0 amappl12 160 7 0 5 2 1 1 1 0 8 0 amappl11 152 391 0 379 1 0 1 1 0 8 0 amappl10 144 324 0 318 1 0 1 1 0 8 0 amappl9 136 391 0 390 1 0 1 1 0 8 0 amappl8 128 391 0 353 2 0 2 2 0 8 0 amappl7 120 290 0 277 1 0 1 1 0 8 0 amappl6 112 28 0 23 1 0 1 1 0 8 0 amappl5 104 431 0 418 1 0 1 1 0 8 0 amappl4 96 833 0 809 1 0 1 1 0 8 0 amappl3 88 464 0 458 1 0 1 1 0 8 0 amappl2 80 6098 0 6041 2 0 2 2 0 8 0 amappl1 72 34890 0 34484 23 13 10 18 0 8 0 amappl 80 2543 0 2499 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 23 0 1 1 0 1 1 0 8 0 uaddrrnd 24 879 0 861 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 879 0 861 1 0 1 1 0 8 0 vmmpekpl 168 10422 0 10386 2 0 2 2 0 8 0 vmmpepl 168 118225 0 116257 146 37 109 123 0 357 16 vmsppl 368 878 0 861 2 0 2 2 0 8 0 pdppl 4096 1765 0 1726 8 2 6 6 0 8 0 pvpl 32 305674 0 285806 199 21 178 199 0 265 14 pmappl 232 878 0 861 4 2 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 283 0 6 8 0 8 8 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(ffff8000230e3a60,ffff800000256b80) at intr_handler+0x8f sys/arch/amd64/amd64/intr.c:536 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f Xspllower() at Xspllower+0x19 pool_get(ffffffff828edcd8,2) at pool_get+0x15d sys/kern/subr_pool.c:587 pmap_enter(fffffd80641e8e98,5621b24e000,689b2000,1,20) at pmap_enter+0x16e uvm_fault(fffffd807effe8a0,5621b24a000,0,1) at uvm_fault+0x77b sys/uvm/uvm_fault.c:691 pageflttrap(ffff8000230e4060,1) at pageflttrap+0x1b8 sys/arch/amd64/amd64/trap.c:221 usertrap(ffff8000230e4060) at usertrap+0x21a sys/arch/amd64/amd64/trap.c:384 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffc7c90, count: -11 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(ffffffff828df818) at __mp_lock+0x12e __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828df818) at __mp_lock+0x12e sys/kern/kern_lock.c:147 syscall(ffff8000230de7f0) at syscall+0x400 mi_syscall sys/sys/syscall_mi.h:93 [inline] syscall(ffff8000230de7f0) at syscall+0x400 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc6fe0, count: -6