uvm_fault(0xfffffd807effeb80, 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(0xfffffd807effeb80, 0xa, 0, 1) -> e vio_rxeof(ffff80000017c000) at vio_rxeof+0x191 sys/dev/pv/if_vio.c:1018 end trace frame: 0xffff800020ed7b20, 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(ffff800020ed7b80,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_enter(fffffd807effd000,91d4fa59000,65a37000,3,22) at pmap_enter+0x91a pmap_unmap_ptes sys/arch/amd64/amd64/pmap.c:431 [inline] pmap_enter(fffffd807effd000,91d4fa59000,65a37000,3,22) at pmap_enter+0x91a sys/arch/amd64/amd64/pmap.c:2841 uvm_fault(fffffd807effeb80,91d4fa59000,1,2) at uvm_fault+0x1373 sys/uvm/uvm_fault.c:939 pageflttrap(ffff800020ed80c0,1) at pageflttrap+0x1b8 sys/arch/amd64/amd64/trap.c:221 usertrap(ffff800020ed80c0) at usertrap+0x21a sys/arch/amd64/amd64/trap.c:384 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffbd640, count: -10 ddb{0}> show registers rdi 0xc rsi 0xc rbp 0xffff800020ed7ac0 rbx 0xffff80000017c000 rdx 0xffffffff816b4ad6 vio_rxeof+0x186 rcx 0xffff8000001ad000 rax 0xffffffff82785ff0 cpu_info_full_primary+0x1ff0 r8 0x2 r9 0xffffffff820aadb0 uvm_fault+0x8a0 r10 0x9032e063cf07e166 r11 0x49d9e6c12450344c r12 0xffff800000024c00 r13 0xc r14 0xfffffd8065f74c00 r15 0 rip 0xffffffff816b4ae1 vio_rxeof+0x191 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020ed7a30 ss 0 vio_rxeof+0x191: movzwl 0xa(%r15),%eax ddb{0}> show proc PROC (syz-executor.0) pid=484566 stat=onproc flags process=2 proc=0 pri=72, usrpri=72, nice=20 forw=0xffffffffffffffff, list=0xffff800020dd7150,0xffff800020ea9660 process=0xffff800020df1ba0 user=0xffff800020ed3000, vmspace=0xfffffd807effeb80 estcpu=36, cpticks=1, pctcpu=0.2 user=0, sys=0, intr=1 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 1442 122631 0 0 3 0x14200 acct acct 20382 65490 0 0 3 0x14200 bored sosplice 30999 457589 37696 0 7 0x2 syz-executor.1 *78840 484566 37696 0 7 0x2 syz-executor.0 37696 392990 51856 0 3 0x82 thrsleep syz-fuzzer 37696 324603 51856 0 3 0x4000082 nanosleep syz-fuzzer 37696 334185 51856 0 3 0x4000082 thrsleep syz-fuzzer 37696 160087 51856 0 3 0x4000082 thrsleep syz-fuzzer 37696 300803 51856 0 3 0x4000082 kqread syz-fuzzer 37696 323134 51856 0 3 0x4000082 thrsleep syz-fuzzer 37696 506430 51856 0 3 0x4000082 thrsleep syz-fuzzer 37696 205415 51856 0 3 0x4000082 nanosleep syz-fuzzer 51856 92638 68817 0 3 0x10008a pause ksh 68817 428333 14956 0 3 0x92 select sshd 94678 275838 1 0 3 0x100083 ttyin getty 14956 143057 1 0 3 0x80 select sshd 73002 74927 4512 74 3 0x100092 bpf pflogd 4512 481863 1 0 3 0x80 netio pflogd 33056 431638 61622 73 3 0x100090 kqread syslogd 61622 303176 1 0 3 0x100082 netio syslogd 81744 447139 1 77 3 0x100090 poll dhclient 42159 514765 1 0 3 0x80 poll dhclient 63765 161993 0 0 3 0x14200 bored smr 25494 333110 0 0 3 0x14200 pgzero zerothread 26708 490295 0 0 3 0x14200 aiodoned aiodoned 40294 138500 0 0 3 0x14200 syncer update 27631 251014 0 0 3 0x14200 cleaner cleaner 72665 417558 0 0 3 0x14200 reaper reaper 23820 309098 0 0 3 0x14200 pgdaemon pagedaemon 11304 208174 0 0 3 0x14200 bored crynlk 54599 421743 0 0 3 0x14200 bored crypto 24584 397667 0 0 3 0x40014200 acpi0 acpi0 72133 469695 0 0 3 0x40014200 idle1 58599 74275 0 0 3 0x14200 bored softnet 42475 427056 0 0 3 0x14200 bored systqmp 82632 194181 0 0 3 0x14200 bored systq 72429 320209 0 0 3 0x40014200 bored softclock 96477 402963 0 0 3 0x40014200 idle0 1 90895 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 78840 (syz-executor.0) thread 0xffff800020dd69e8 (484566) shared rwlock vmmaplk r = 0 (0xfffffd807effeb98) #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+0xd85 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 (0xffffffff82933348) #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 9524 6425K 6812K 78643K 11467 0 pcb 13 8K 8K 78643K 68 0 rtable 109 4K 6K 78643K 352 0 ifaddr 76 14K 15K 78643K 140 0 counters 43 33K 34K 78643K 61 0 ioctlops 0 0K 4K 78643K 1547 0 iov 0 0K 16K 78643K 56 0 mount 1 1K 1K 78643K 1 0 vnodes 1221 77K 77K 78643K 1574 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 7 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 121 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 559 0 sigio 0 0K 0K 78643K 4 0 proc 62 63K 83K 78643K 481 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 73 0 in_multi 42 2K 2K 78643K 116 0 ether_multi 1 0K 0K 78643K 14 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 55 254K 254K 78643K 55 0 exec 0 0K 1K 78643K 238 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 171 123K 123K 78643K 2772 0 UVM aobj 22 2K 2K 78643K 22 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 67 0 NDP 13 0K 0K 78643K 30 0 temp 137 3883K 3947K 78643K 3631 0 kqueue 3 4K 10K 78643K 29 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 9 0 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 39 0 37 1 0 1 1 0 8 0 rtentry 112 66 0 23 2 0 2 2 0 8 0 unpcb 120 275 0 265 1 0 1 1 0 8 0 syncache 272 6 0 6 2 1 1 1 0 8 1 tcpqe 32 44 0 44 2 1 1 1 0 8 1 tcpcb 592 256 0 252 4 2 2 2 0 8 1 inpcb 296 551 0 542 5 3 2 2 0 8 1 rttmr 72 12 0 11 1 0 1 1 0 8 0 nd6 48 16 0 12 1 0 1 1 0 8 0 swfcl 56 2 0 0 1 0 1 1 0 8 0 ppxss 1136 4 0 4 2 2 0 1 0 8 0 pffrag 232 7 0 6 1 0 1 1 0 482 0 pffrnode 88 7 0 6 1 0 1 1 0 8 0 pffrent 40 272 0 271 1 0 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 9 0 9 2 2 0 1 0 8 0 pfstitem 24 29 0 21 1 0 1 1 0 8 0 pfstkey 112 29 0 21 1 0 1 1 0 8 0 pfstate 328 29 0 21 2 0 2 2 0 8 0 pfrule 1360 26 0 23 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 283 0 84 16 1 15 16 0 8 1 art_table 32 284 0 84 3 0 3 3 0 8 0 art_node 16 65 0 25 1 0 1 1 0 8 0 sysvmsgpl 40 43 0 28 1 0 1 1 0 8 0 semapl 112 119 0 109 1 0 1 1 0 8 0 shmpl 112 19 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2220 0 818 89 0 89 89 0 8 0 ffsino 272 2220 0 818 94 0 94 94 0 8 0 nchpl 144 3168 0 1571 60 0 60 60 0 8 0 uvmvnodes 72 2441 0 0 45 0 45 45 0 8 0 vnodes 208 2441 0 0 129 0 129 129 0 8 0 namei 1024 9682 0 9682 5 4 1 1 0 8 1 percpumem 16 41 0 9 1 0 1 1 0 8 0 vcpupl 1984 10 0 0 2 0 2 2 0 8 0 vmpool 560 10 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 3 0 3 2 2 0 1 0 8 0 scxspl 200 8807 0 8807 8 7 1 7 0 8 1 plimitpl 152 34 0 26 1 0 1 1 0 8 0 sigapl 424 776 0 744 4 0 4 4 0 8 0 futexpl 56 7592 0 7592 5 4 1 1 0 8 1 knotepl 112 91 0 71 1 0 1 1 0 8 0 kqueuepl 152 68 0 66 1 0 1 1 0 8 0 pipepl 304 139 0 128 4 2 2 2 0 8 1 fdescpl 496 759 0 744 3 0 3 3 0 8 0 filepl 152 4729 0 4625 5 0 5 5 0 8 0 lockfpl 104 95 0 94 1 0 1 1 0 8 0 lockfspl 48 36 0 35 1 0 1 1 0 8 0 sessionpl 120 18 0 7 1 0 1 1 0 8 0 pgrppl 48 29 0 18 1 0 1 1 0 8 0 ucredpl 96 1368 0 1359 1 0 1 1 0 8 0 zombiepl 144 744 0 744 1 0 1 1 0 8 1 processpl 1008 776 0 744 6 1 5 5 0 8 0 procpl 632 1941 0 1902 4 0 4 4 0 8 0 sosppl 144 11 0 11 4 3 1 1 0 8 1 sockpl 400 865 0 846 7 3 4 4 0 8 2 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 1 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 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 6 0 0 1 0 1 1 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 162 0 0 20 0 20 20 0 8 0 mtagpl 96 92 0 0 3 0 3 3 0 8 0 mbufpl 256 489 0 0 28 0 28 28 0 8 0 bufpl 280 4022 0 125 279 0 279 279 0 8 0 anonpl 16 81295 0 63526 81 8 73 79 0 124 1 amapchunkpl 152 4607 0 4306 29 15 14 26 0 158 0 amappl16 192 2859 0 2047 42 0 42 42 0 8 1 amappl15 184 268 0 266 2 1 1 1 0 8 0 amappl14 176 4 0 1 1 0 1 1 0 8 0 amappl13 168 29 0 25 1 0 1 1 0 8 0 amappl12 160 25 0 21 1 0 1 1 0 8 0 amappl11 152 55 0 40 1 0 1 1 0 8 0 amappl10 144 276 0 273 1 0 1 1 0 8 0 amappl9 136 634 0 631 1 0 1 1 0 8 0 amappl8 128 609 0 573 2 0 2 2 0 8 0 amappl7 120 114 0 102 1 0 1 1 0 8 0 amappl6 112 30 0 24 1 0 1 1 0 8 0 amappl5 104 664 0 647 1 0 1 1 0 8 0 amappl4 96 494 0 465 1 0 1 1 0 8 0 amappl3 88 140 0 131 1 0 1 1 0 8 0 amappl2 80 5383 0 5322 2 0 2 2 0 8 0 amappl1 72 31559 0 31136 23 13 10 18 0 8 0 amappl 80 2235 0 2151 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 21 0 0 1 0 1 1 0 8 0 uaddrrnd 24 769 0 744 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 769 0 744 1 0 1 1 0 8 0 vmmpekpl 168 9614 0 9579 3 1 2 2 0 8 0 vmmpepl 168 102572 0 100641 123 27 96 114 0 357 2 vmsppl 368 768 0 744 3 0 3 3 0 8 0 pdppl 4096 1545 0 1498 7 0 7 7 0 8 0 pvpl 32 269218 0 248626 196 24 172 188 0 265 3 pmappl 232 768 0 744 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 285 0 12 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(ffff800020ed7b80,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_enter(fffffd807effd000,91d4fa59000,65a37000,3,22) at pmap_enter+0x91a pmap_unmap_ptes sys/arch/amd64/amd64/pmap.c:431 [inline] pmap_enter(fffffd807effd000,91d4fa59000,65a37000,3,22) at pmap_enter+0x91a sys/arch/amd64/amd64/pmap.c:2841 uvm_fault(fffffd807effeb80,91d4fa59000,1,2) at uvm_fault+0x1373 sys/uvm/uvm_fault.c:939 pageflttrap(ffff800020ed80c0,1) at pageflttrap+0x1b8 sys/arch/amd64/amd64/trap.c:221 usertrap(ffff800020ed80c0) at usertrap+0x21a sys/arch/amd64/amd64/trap.c:384 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffbd640, 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(ffffffff82933140) at __mp_lock+0x12e __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82933140) at __mp_lock+0x12e sys/kern/kern_lock.c:147 pageflttrap(ffff800023104780,1) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 usertrap(ffff800023104780) at usertrap+0x21a sys/arch/amd64/amd64/trap.c:384 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffea080, count: -7