uvm_fault(0xfffffd807effea10, 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(0xfffffd807effea10, 0xa, 0, 1) -> e vio_rxeof(ffff80000017c000) at vio_rxeof+0x191 sys/dev/pv/if_vio.c:1018 end trace frame: 0xffff800020ed6f40, 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(ffff800020ed6fa0,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_cmp4(8015e,8015f) at __sanitizer_cov_trace_cmp4+0x5d kd_curproc sys/dev/kcov.c:416 [inline] __sanitizer_cov_trace_cmp4(8015e,8015f) at __sanitizer_cov_trace_cmp4+0x5d trace_cmp sys/dev/kcov.c:104 [inline] __sanitizer_cov_trace_cmp4(8015e,8015f) at __sanitizer_cov_trace_cmp4+0x5d sys/dev/kcov.c:135 __mp_lock(ffffffff828c5320) at __mp_lock+0x139 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828c5320) at __mp_lock+0x139 sys/kern/kern_lock.c:147 pageflttrap(ffff800020ed71b0,1) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 usertrap(ffff800020ed71b0) at usertrap+0x21a sys/arch/amd64/amd64/trap.c:384 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffc2fe0, count: -9 ddb{0}> show registers rdi 0xc rsi 0xc rbp 0xffff800020ed6ee0 rbx 0xffff80000017c000 rdx 0 rcx 0xffffffff8275aff0 cpu_info_full_primary+0x1ff0 rax 0xffffffff8275aff0 cpu_info_full_primary+0x1ff0 r8 0x2 r9 0 r10 0x4ad6d6c7b5f7126f r11 0x60796062d55ff6ec r12 0xffff800000024c00 r13 0xc r14 0xfffffd806a2ad300 r15 0 rip 0xffffffff8113c191 vio_rxeof+0x191 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020ed6e50 ss 0 vio_rxeof+0x191: movzwl 0xa(%r15),%eax ddb{0}> show proc PROC (syz-executor.0) pid=176768 stat=onproc flags process=2 proc=0 pri=65, usrpri=65, nice=20 forw=0xffffffffffffffff, list=0xffff800020ddc278,0xffff800020ddd878 process=0xffff8000fffff758 user=0xffff800020ed2000, vmspace=0xfffffd807effea10 estcpu=36, cpticks=2, pctcpu=0.10 user=0, sys=0, intr=1 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 67714 363897 87451 0 7 0 syz-executor.1 87451 130269 30517 0 3 0x82 nanosleep syz-executor.1 *19858 176768 30517 0 7 0x2 syz-executor.0 30517 506654 65376 0 3 0x82 kqread syz-fuzzer 30517 325389 65376 0 3 0x4000082 nanosleep syz-fuzzer 30517 7709 65376 0 3 0x4000082 thrsleep syz-fuzzer 30517 250743 65376 0 3 0x4000082 thrsleep syz-fuzzer 30517 453012 65376 0 3 0x4000082 nanosleep syz-fuzzer 30517 403147 65376 0 3 0x4000082 thrsleep syz-fuzzer 30517 20942 65376 0 3 0x4000082 thrsleep syz-fuzzer 30517 480103 65376 0 3 0x4000082 thrsleep syz-fuzzer 30517 499318 65376 0 3 0x4000082 thrsleep syz-fuzzer 30517 508865 65376 0 3 0x4000082 thrsleep syz-fuzzer 65376 114722 61933 0 3 0x10008a pause ksh 61933 253252 43993 0 3 0x92 select sshd 15811 482802 1 0 3 0x100083 ttyin getty 43993 27098 1 0 3 0x80 select sshd 2149 328955 56565 74 3 0x100092 bpf pflogd 56565 44354 1 0 3 0x80 netio pflogd 74004 393900 12184 73 3 0x100090 kqread syslogd 12184 32004 1 0 3 0x100082 netio syslogd 1458 84275 1 77 3 0x100090 poll dhclient 32577 480894 1 0 3 0x80 poll dhclient 17129 355283 0 0 3 0x14200 bored smr 31780 386967 0 0 2 0x14200 zerothread 91725 110 0 0 3 0x14200 aiodoned aiodoned 68571 309167 0 0 3 0x14200 syncer update 77008 245743 0 0 3 0x14200 cleaner cleaner 29604 369877 0 0 3 0x14200 reaper reaper 93555 9449 0 0 3 0x14200 pgdaemon pagedaemon 61431 431744 0 0 3 0x14200 bored crynlk 97079 449226 0 0 3 0x14200 bored crypto 38472 416778 0 0 3 0x40014200 acpi0 acpi0 22732 433991 0 0 3 0x40014200 idle1 97982 145060 0 0 3 0x14200 bored softnet 14880 146914 0 0 3 0x14200 bored systqmp 68419 8197 0 0 3 0x14200 bored systq 31348 148425 0 0 3 0x40014200 bored softclock 86332 325300 0 0 3 0x40014200 idle0 1 51807 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 19858 (syz-executor.0) thread 0xffff800020ddc758 (176768) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff828c5528) #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_cmp4+0x5d kd_curproc sys/dev/kcov.c:416 [inline] #3 __sanitizer_cov_trace_cmp4+0x5d trace_cmp sys/dev/kcov.c:104 [inline] #3 __sanitizer_cov_trace_cmp4+0x5d sys/dev/kcov.c:135 #4 __mp_lock+0x139 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] #4 __mp_lock+0x139 sys/kern/kern_lock.c:147 #5 pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 #6 usertrap+0x21a sys/arch/amd64/amd64/trap.c:384 #7 recall_trap+0x8 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9472 6401K 6523K 78643K 10605 0 pcb 13 8K 8K 78643K 19 0 rtable 105 3K 3K 78643K 201 0 ifaddr 44 10K 10K 78643K 49 0 counters 43 33K 33K 78643K 43 0 ioctlops 0 0K 4K 78643K 1473 0 mount 1 1K 1K 78643K 1 0 vnodes 1221 77K 77K 78643K 1240 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 3 0 VM map 2 1K 1K 78643K 2 0 sem 4 0K 0K 78643K 8 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 65 0 proc 59 63K 83K 78643K 438 0 subproc 32 2K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 33 2K 2K 78643K 33 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 31 148K 148K 78643K 31 0 exec 0 0K 1K 78643K 209 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 115 22K 23K 78643K 1130 0 UVM aobj 3 2K 2K 78643K 3 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 6 0K 0K 78643K 10 0 temp 80 3858K 4106K 78643K 2118 0 kqueue 3 4K 4K 78643K 3 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 21 0 19 1 0 1 1 0 8 0 rtentry 112 45 0 1 2 0 2 2 0 8 0 unpcb 120 33 0 23 1 0 1 1 0 8 0 syncache 264 5 0 5 2 1 1 1 0 8 1 tcpqe 32 638 0 638 1 0 1 1 0 8 1 tcpcb 544 41 0 36 1 0 1 1 0 8 0 inpcb 296 87 0 79 2 0 2 2 0 8 1 nd6 48 6 0 0 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 pfstitem 24 14 0 0 1 0 1 1 0 8 0 pfstkey 112 14 0 0 1 0 1 1 0 8 0 pfstate 328 14 0 0 2 0 2 2 0 8 0 pfrule 1360 22 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 188 0 0 12 0 12 12 0 8 0 art_table 32 189 0 0 2 0 2 2 0 8 0 art_node 16 44 0 4 1 0 1 1 0 8 0 sysvmsgpl 40 12 0 4 1 0 1 1 0 8 0 semupl 112 3 0 3 1 0 1 1 0 8 1 semapl 112 4 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1462 0 56 88 0 88 88 0 8 0 ffsino 272 1462 0 56 95 1 94 94 0 8 0 nchpl 144 1728 0 118 60 0 60 60 0 8 0 uvmvnodes 72 1522 0 0 28 0 28 28 0 8 0 vnodes 208 1522 0 0 81 0 81 81 0 8 0 namei 1024 4603 0 4603 2 1 1 1 0 8 1 percpumem 16 32 0 0 1 0 1 1 0 8 0 scxspl 192 5222 0 5222 8 1 7 7 0 8 7 plimitpl 152 15 0 7 1 0 1 1 0 8 0 sigapl 424 280 0 249 4 0 4 4 0 8 0 futexpl 56 577 0 577 1 0 1 1 0 8 1 knotepl 112 61 0 42 1 0 1 1 0 8 0 kqueuepl 144 6 0 4 1 0 1 1 0 8 0 pipepl 304 81 0 71 1 0 1 1 0 8 0 fdescpl 496 265 0 249 3 0 3 3 0 8 0 filepl 152 1373 0 1272 6 1 5 5 0 8 1 lockfpl 104 13 0 12 1 0 1 1 0 8 0 lockfspl 48 6 0 5 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 79 0 70 1 0 1 1 0 8 0 zombiepl 144 249 0 249 2 1 1 1 0 8 1 processpl 992 280 0 249 6 1 5 5 0 8 0 procpl 624 360 0 320 4 0 4 4 0 8 0 sockpl 400 141 0 121 4 1 3 3 0 8 0 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 1 0 0 1 0 1 1 0 8 0 mcl4k 4096 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 185 0 0 23 0 23 23 0 8 0 mtagpl 96 6 0 0 1 0 1 1 0 8 0 mbufpl 256 398 0 0 25 0 25 25 0 8 0 bufpl 280 3396 0 132 234 0 234 234 0 8 0 anonpl 16 40318 0 24977 63 1 62 62 0 124 0 amapchunkpl 152 1199 0 1064 8 0 8 8 0 158 0 amappl16 192 1066 0 234 42 0 42 42 0 8 0 amappl15 184 16 0 14 1 0 1 1 0 8 0 amappl14 176 28 0 23 1 0 1 1 0 8 0 amappl13 168 36 0 32 1 0 1 1 0 8 0 amappl12 160 5 0 5 2 1 1 1 0 8 1 amappl11 152 57 0 42 1 0 1 1 0 8 0 amappl10 144 55 0 45 1 0 1 1 0 8 0 amappl9 136 389 0 388 1 0 1 1 0 8 0 amappl8 128 339 0 314 2 0 2 2 0 8 0 amappl7 120 133 0 120 1 0 1 1 0 8 0 amappl6 112 26 0 20 1 0 1 1 0 8 0 amappl5 104 160 0 144 1 0 1 1 0 8 0 amappl4 96 492 0 462 1 0 1 1 0 8 0 amappl3 88 98 0 92 1 0 1 1 0 8 0 amappl2 80 1142 0 1067 2 0 2 2 0 8 0 amappl1 72 15936 0 15493 23 9 14 18 0 8 4 amappl 80 615 0 573 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 265 0 249 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 265 0 249 1 0 1 1 0 8 0 vmmpekpl 168 6160 0 6125 2 0 2 2 0 8 0 vmmpepl 168 40234 0 38232 123 5 118 118 0 357 29 vmsppl 368 264 0 249 2 0 2 2 0 8 0 pdppl 4096 537 0 498 7 1 6 6 0 8 1 pvpl 32 141231 0 122788 154 0 154 154 0 265 5 pmappl 232 264 0 249 2 0 2 2 0 8 1 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 274 0 7 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(ffff800020ed6fa0,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_cmp4(8015e,8015f) at __sanitizer_cov_trace_cmp4+0x5d kd_curproc sys/dev/kcov.c:416 [inline] __sanitizer_cov_trace_cmp4(8015e,8015f) at __sanitizer_cov_trace_cmp4+0x5d trace_cmp sys/dev/kcov.c:104 [inline] __sanitizer_cov_trace_cmp4(8015e,8015f) at __sanitizer_cov_trace_cmp4+0x5d sys/dev/kcov.c:135 __mp_lock(ffffffff828c5320) at __mp_lock+0x139 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828c5320) at __mp_lock+0x139 sys/kern/kern_lock.c:147 pageflttrap(ffff800020ed71b0,1) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 usertrap(ffff800020ed71b0) at usertrap+0x21a sys/arch/amd64/amd64/trap.c:384 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffc2fe0, count: -9 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x6f sys/dev/kcov.c:88 pageflttrap(ffff8000230ed720,1) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 usertrap(ffff8000230ed720) at usertrap+0x21a sys/arch/amd64/amd64/trap.c:384 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7fffff7740, count: -7