uvm_fault(0xffffffff82904c80, 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(0xffffffff82904c80, 0xa, 0, 1) -> e vio_rxeof(ffff80000017c000) at vio_rxeof+0x191 sys/dev/pv/if_vio.c:1018 end trace frame: 0xffff800020dcf660, 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(ffff800020dcf6c0,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 pmap_do_remove(fffffd807effdcb0,aab6f0a3000,aab6f2a2000,0) at pmap_do_remove+0x510 sys/arch/amd64/amd64/pmap.c:1757 uvm_map_teardown(fffffd807effe170) at uvm_map_teardown+0x195 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd807effe170) at uvm_map_teardown+0x195 sys/uvm/uvm_map.c:2739 uvmspace_free(fffffd807effe170) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3646 uvm_exit(ffff800020df1750) at uvm_exit+0x29 sys/uvm/uvm_glue.c:297 reaper(ffff800020d89110) at reaper+0x189 sys/kern/kern_exit.c:456 end trace frame: 0x0, count: -10 ddb{0}> show registers rdi 0xc rsi 0xc rbp 0xffff800020dcf600 rbx 0xffff80000017c000 rdx 0 rcx 0xffffffff82791ff0 cpu_info_full_primary+0x1ff0 rax 0xffffffff82791ff0 cpu_info_full_primary+0x1ff0 r8 0x2 r9 0x5 r10 0x698474a11ce69e67 r11 0xd8a71906418fdc8c r12 0xffff800000024c00 r13 0xc r14 0xfffffd8068df9500 r15 0 rip 0xffffffff8135d211 vio_rxeof+0x191 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020dcf570 ss 0x10 vio_rxeof+0x191: movzwl 0xa(%r15),%eax ddb{0}> show proc PROC (reaper) pid=249510 stat=onproc flags process=14000 proc=200 pri=4, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020d88ea0,0xffff800020d89ae0 process=0xffff800020dbcba8 user=0xffff800020dca000, vmspace=0xffffffff82904c80 estcpu=0, cpticks=1, pctcpu=0.20 user=0, sys=0, intr=1 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 81702 231892 81589 0 3 0x82 nanosleep syz-executor.1 58197 262574 81589 0 2 0x2 syz-executor.0 81589 326935 36682 0 3 0x82 kqread syz-fuzzer 81589 265657 36682 0 3 0x4000082 nanosleep syz-fuzzer 81589 165671 36682 0 3 0x4000082 thrsleep syz-fuzzer 81589 126495 36682 0 3 0x4000082 thrsleep syz-fuzzer 81589 255944 36682 0 3 0x4000082 thrsleep syz-fuzzer 81589 150992 36682 0 3 0x4000082 thrsleep syz-fuzzer 81589 490069 36682 0 3 0x4000082 thrsleep syz-fuzzer 81589 445840 36682 0 3 0x4000082 thrsleep syz-fuzzer 81589 183918 36682 0 7 0x4000002 syz-fuzzer 81589 496856 36682 0 3 0x4000082 thrsleep syz-fuzzer 36682 142120 56111 0 3 0x10008a pause ksh 56111 347046 18876 0 3 0x92 select sshd 94397 69334 1 0 3 0x100083 ttyin getty 18876 40891 1 0 3 0x80 select sshd 79622 119425 90893 74 3 0x100092 bpf pflogd 90893 313126 1 0 3 0x80 netio pflogd 44943 49492 9570 73 3 0x100090 kqread syslogd 9570 56525 1 0 3 0x100082 netio syslogd 20590 108338 1 77 3 0x100090 poll dhclient 24054 339699 1 0 3 0x80 poll dhclient 60405 20704 0 0 3 0x14200 bored smr 48714 152239 0 0 3 0x14200 pgzero zerothread 54253 359375 0 0 3 0x14200 aiodoned aiodoned 13218 453351 0 0 3 0x14200 syncer update 66637 80018 0 0 3 0x14200 cleaner cleaner *29740 249510 0 0 7 0x14200 reaper 71193 393257 0 0 3 0x14200 pgdaemon pagedaemon 9291 265991 0 0 3 0x14200 bored crynlk 52819 424442 0 0 3 0x14200 bored crypto 2672 263858 0 0 3 0x40014200 acpi0 acpi0 36128 346887 0 0 3 0x40014200 idle1 66828 400707 0 0 3 0x14200 bored softnet 92111 365036 0 0 3 0x14200 bored systqmp 59499 466862 0 0 3 0x14200 bored systq 81218 107326 0 0 3 0x40014200 bored softclock 6998 259687 0 0 3 0x40014200 idle0 1 133929 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 81589 (syz-fuzzer) thread 0xffff800020ddc008 (183918) exclusive rwlock pipelk r = 0 (0xfffffd806f787240) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 pipe_write+0x361 sys/kern/sys_pipe.c:559 #2 dofilewritev+0x1b6 sys/kern/sys_generic.c:365 #3 sys_write+0x83 sys/kern/sys_generic.c:285 #4 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #4 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #5 Xsyscall+0x128 Process 29740 (reaper) thread 0xffff800020d89110 (249510) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff828fd198) #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 Xspllower+0x19 #4 pmap_do_remove+0x510 sys/arch/amd64/amd64/pmap.c:1757 #5 uvm_map_teardown+0x195 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] #5 uvm_map_teardown+0x195 sys/uvm/uvm_map.c:2739 #6 uvmspace_free+0x86 sys/uvm/uvm_map.c:3646 #7 uvm_exit+0x29 sys/uvm/uvm_glue.c:297 #8 reaper+0x189 sys/kern/kern_exit.c:456 #9 proc_trampoline+0x1c ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9486 6403K 7436K 78643K 11581 0 pcb 13 8K 8K 78643K 43 0 rtable 106 12K 12K 78643K 275 0 ifaddr 52 11K 13K 78643K 76 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 33K 78643K 43 0 ioctlops 0 0K 4K 78643K 1495 0 iov 0 0K 12K 78643K 16 0 mount 1 1K 1K 78643K 1 0 vnodes 1221 77K 77K 78643K 1466 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 5 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 50 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 251 0 sigio 0 0K 0K 78643K 1 0 proc 61 63K 95K 78643K 445 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 10 0 in_multi 29 1K 2K 78643K 56 0 ether_multi 1 0K 0K 78643K 5 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 43 201K 201K 78643K 43 0 exec 0 0K 1K 78643K 216 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 129 39K 39K 78643K 1742 0 UVM aobj 16 2K 2K 78643K 21 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 31 0 NDP 9 0K 0K 78643K 15 0 temp 87 3855K 3919K 78643K 2937 0 kqueue 3 4K 8K 78643K 8 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 6 0 0 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 25 0 23 1 0 1 1 0 8 0 rtentry 112 54 0 13 2 0 2 2 0 8 0 unpcb 120 147 0 137 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 448 0 448 2 2 0 1 0 8 0 tcpcb 544 53 0 49 1 0 1 1 0 8 0 inpcb 296 333 0 326 4 2 2 2 0 8 1 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 9 0 5 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 1 0 1 0 8 0 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 1 0 1 1 1 0 1 0 482 0 pffrnode 88 1 0 1 1 1 0 1 0 8 0 pffrent 40 45 0 45 1 1 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 16 0 16 1 1 0 1 0 8 0 pfstitem 24 25 0 9 1 0 1 1 0 8 0 pfstkey 112 27 0 11 1 0 1 1 0 8 0 pfstate 328 25 0 9 2 0 2 2 0 8 0 pfrule 1360 26 0 19 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 212 0 40 13 0 13 13 0 8 0 art_table 32 213 0 40 2 0 2 2 0 8 0 art_node 16 51 0 13 1 0 1 1 0 8 0 sysvmsgpl 40 12 0 3 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 48 0 38 1 0 1 1 0 8 0 shmpl 112 18 0 6 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1700 0 299 88 0 88 88 0 8 0 ffsino 272 1700 0 299 95 1 94 94 0 8 0 nchpl 144 2240 0 630 60 0 60 60 0 8 0 uvmvnodes 72 1961 0 0 36 0 36 36 0 8 0 vnodes 208 1961 0 0 104 0 104 104 0 8 0 namei 1024 6254 0 6254 3 2 1 1 0 8 1 percpumem 16 32 0 0 1 0 1 1 0 8 0 vcpupl 1984 1 0 0 1 0 1 1 0 8 0 vmpool 560 3 0 2 2 1 1 1 0 8 0 pfiaddrpl 120 5 0 5 1 1 0 1 0 8 0 scxspl 192 6637 0 6637 10 9 1 7 0 8 1 plimitpl 152 33 0 25 1 0 1 1 0 8 0 sigapl 424 466 0 436 4 0 4 4 0 8 0 futexpl 56 3291 0 3291 2 1 1 1 0 8 1 knotepl 112 70 0 51 1 0 1 1 0 8 0 kqueuepl 144 20 0 17 1 0 1 1 0 8 0 pipepl 304 124 0 114 3 1 2 2 0 8 1 fdescpl 496 451 0 436 3 0 3 3 0 8 0 filepl 152 2626 0 2526 6 1 5 5 0 8 1 lockfpl 104 60 0 59 1 0 1 1 0 8 0 lockfspl 48 20 0 19 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 18 0 7 1 0 1 1 0 8 0 ucredpl 96 316 0 307 1 0 1 1 0 8 0 zombiepl 144 436 0 435 2 1 1 1 0 8 0 processpl 992 466 0 435 6 1 5 5 0 8 1 procpl 624 975 0 935 4 0 4 4 0 8 0 sockpl 400 512 0 493 7 3 4 4 0 8 2 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 1 0 0 1 0 1 1 0 8 0 mcl4k 4096 6 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 274 0 0 34 0 34 34 0 8 0 mtagpl 96 16 0 0 1 0 1 1 0 8 0 mbufpl 256 280 0 0 17 0 17 17 0 8 0 bufpl 280 3795 0 133 262 0 262 262 0 8 0 anonpl 16 56999 0 40010 72 2 70 70 0 124 0 amapchunkpl 152 2206 0 2033 9 1 8 9 0 158 0 amappl16 192 2100 0 1187 48 1 47 47 0 8 1 amappl15 184 3 0 1 1 0 1 1 0 8 0 amappl14 176 24 0 20 1 0 1 1 0 8 0 amappl13 168 29 0 26 1 0 1 1 0 8 0 amappl12 160 121 0 116 2 1 1 1 0 8 0 amappl11 152 62 0 46 1 0 1 1 0 8 0 amappl10 144 17 0 12 1 0 1 1 0 8 0 amappl9 136 384 0 383 1 0 1 1 0 8 0 amappl8 128 358 0 322 2 0 2 2 0 8 0 amappl7 120 125 0 112 1 0 1 1 0 8 0 amappl6 112 24 0 22 1 0 1 1 0 8 0 amappl5 104 458 0 442 1 0 1 1 0 8 0 amappl4 96 481 0 452 1 0 1 1 0 8 0 amappl3 88 111 0 104 1 0 1 1 0 8 0 amappl2 80 2647 0 2577 2 0 2 2 0 8 0 amappl1 72 22128 0 21662 23 13 10 18 0 8 0 amappl 80 1222 0 1172 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 20 0 5 1 0 1 1 0 8 0 uaddrrnd 24 454 0 438 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 454 0 438 1 0 1 1 0 8 0 vmmpekpl 168 7528 0 7495 2 0 2 2 0 8 0 vmmpepl 168 64030 0 61916 125 26 99 118 0 357 7 vmsppl 368 453 0 437 2 0 2 2 0 8 0 pdppl 4096 915 0 875 7 1 6 6 0 8 0 pvpl 32 191779 0 171716 172 2 170 170 0 265 6 pmappl 232 453 0 437 3 1 2 2 0 8 1 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 282 0 10 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(ffff800020dcf6c0,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 pmap_do_remove(fffffd807effdcb0,aab6f0a3000,aab6f2a2000,0) at pmap_do_remove+0x510 sys/arch/amd64/amd64/pmap.c:1757 uvm_map_teardown(fffffd807effe170) at uvm_map_teardown+0x195 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd807effe170) at uvm_map_teardown+0x195 sys/uvm/uvm_map.c:2739 uvmspace_free(fffffd807effe170) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3646 uvm_exit(ffff800020df1750) at uvm_exit+0x29 sys/uvm/uvm_glue.c:297 reaper(ffff800020d89110) at reaper+0x189 sys/kern/kern_exit.c:456 end trace frame: 0x0, count: -10 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(ffffffff828fcf90) at __mp_lock+0x12e __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828fcf90) at __mp_lock+0x12e sys/kern/kern_lock.c:147 pipeselwakeup(fffffd806f7871b0) at pipeselwakeup+0x4b sys/kern/sys_pipe.c:365 pipe_write(fffffd80685ed868,ffff800020eb0048,0) at pipe_write+0x74e sys/kern/sys_pipe.c:658 dofilewritev(ffff800020ddc008,e,ffff800020eb0048,0,ffff800020eb0130) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff800020ddc008,ffff800020eb00e0,ffff800020eb0130) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020eb01b0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020eb01b0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc00035d8a8, count: -10