uvm_fault(0xfffffd807efffa10, 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(0xfffffd807efffa10, 0xa, 0, 1) -> e vio_rxeof(ffff80000017c000) at vio_rxeof+0x191 sys/dev/pv/if_vio.c:1018 end trace frame: 0xffff8000230fe050, 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(ffff8000230fe0b0,ffff800000256b80) at intr_handler+0x8f sys/arch/amd64/amd64/intr.c:536 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f uvm_map_lookup_entry(fffffd807efffa10,23419e3b000,ffff8000230fe3d0) at uvm_map_lookup_entry+0x59 uvm_map_entrybyaddr sys/uvm/uvm_map.c:539 [inline] uvm_map_lookup_entry(fffffd807efffa10,23419e3b000,ffff8000230fe3d0) at uvm_map_lookup_entry+0x59 sys/uvm/uvm_map.c:1796 uvmfault_lookup(ffff8000230fe3a8,0) at uvmfault_lookup+0xea sys/uvm/uvm_fault.c:1448 uvm_fault(fffffd807efffa10,23419e3b000,0,1) at uvm_fault+0x7f sys/uvm/uvm_fault.c:524 pageflttrap(ffff8000230fe540,1) at pageflttrap+0x1b8 sys/arch/amd64/amd64/trap.c:221 usertrap(ffff8000230fe540) at usertrap+0x21a sys/arch/amd64/amd64/trap.c:384 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7fffff0280, count: -10 ddb{0}> show registers rdi 0xc rsi 0xc rbp 0xffff8000230fdff0 rbx 0xffff80000017c000 rdx 0 rcx 0xffffffff82742ff0 cpu_info_full_primary+0x1ff0 rax 0xffffffff82742ff0 cpu_info_full_primary+0x1ff0 r8 0x2 r9 0 r10 0x331719c5fbc45f86 r11 0x1a003e57bdf4a8ef r12 0xffff800000024c00 r13 0xc r14 0xfffffd80687f3100 r15 0 rip 0xffffffff815cb8e1 vio_rxeof+0x191 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000230fdf60 ss 0 vio_rxeof+0x191: movzwl 0xa(%r15),%eax ddb{0}> show proc PROC (syz-executor.1) pid=282038 stat=onproc flags process=0 proc=0 pri=61, usrpri=62, nice=20 forw=0xffffffffffffffff, list=0xffff800020e04ae8,0xffff800020e03028 process=0xffff800020df0bb0 user=0xffff8000230f9000, vmspace=0xfffffd807efffa10 estcpu=12, cpticks=1, pctcpu=2.82 user=0, sys=0, intr=1 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 91154 390240 31517 0 7 0 syz-executor.0 *28688 282038 92201 0 7 0 syz-executor.1 28688 198107 92201 0 3 0x4000080 fsleep syz-executor.1 92201 70701 82210 0 3 0x82 nanosleep syz-executor.1 31517 214656 82210 0 3 0x82 nanosleep syz-executor.0 82210 199468 75158 0 3 0x82 thrsleep syz-fuzzer 82210 277985 75158 0 3 0x4000082 nanosleep syz-fuzzer 82210 62652 75158 0 3 0x4000082 thrsleep syz-fuzzer 82210 77885 75158 0 3 0x4000082 thrsleep syz-fuzzer 82210 170046 75158 0 3 0x4000082 thrsleep syz-fuzzer 82210 109075 75158 0 3 0x4000082 thrsleep syz-fuzzer 82210 384017 75158 0 3 0x4000082 kqread syz-fuzzer 82210 211786 75158 0 3 0x4000082 thrsleep syz-fuzzer 82210 186062 75158 0 3 0x4000082 thrsleep syz-fuzzer 82210 335931 75158 0 3 0x4000082 thrsleep syz-fuzzer 75158 334785 35959 0 3 0x10008a pause ksh 35959 233574 17725 0 3 0x92 select sshd 72898 204178 1 0 3 0x100083 ttyin getty 17725 65668 1 0 3 0x80 select sshd 2733 421413 52739 74 3 0x100092 bpf pflogd 52739 121721 1 0 3 0x80 netio pflogd 41766 515098 68981 73 3 0x100090 kqread syslogd 68981 248488 1 0 3 0x100082 netio syslogd 44280 98602 1 77 3 0x100090 poll dhclient 92234 42094 1 0 3 0x80 poll dhclient 60600 289610 0 0 3 0x14200 bored smr 40079 175567 0 0 2 0x14200 zerothread 39544 138993 0 0 3 0x14200 aiodoned aiodoned 36119 320969 0 0 3 0x14200 syncer update 13425 373633 0 0 3 0x14200 cleaner cleaner 81123 363331 0 0 3 0x14200 reaper reaper 85721 107946 0 0 3 0x14200 pgdaemon pagedaemon 2487 2962 0 0 3 0x14200 bored crynlk 29149 212148 0 0 3 0x14200 bored crypto 98404 42317 0 0 3 0x40014200 acpi0 acpi0 8679 508303 0 0 3 0x40014200 idle1 14258 264684 0 0 3 0x14200 bored softnet 24485 470443 0 0 3 0x14200 bored systqmp 15293 14031 0 0 3 0x14200 bored systq 34172 177225 0 0 3 0x40014200 bored softclock 53162 448977 0 0 3 0x40014200 idle0 1 17376 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 28688 (syz-executor.1) thread 0xffff800020e039d8 (282038) shared rwlock vmmaplk r = 0 (0xfffffd807efffa28) #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 (0xffffffff828e6a68) #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 9470 6397K 6534K 78643K 10630 0 pcb 13 8K 8K 78643K 23 0 rtable 105 3K 3K 78643K 199 0 ifaddr 48 11K 11K 78643K 50 0 counters 43 33K 33K 78643K 43 0 ioctlops 0 0K 4K 78643K 1479 0 iov 0 0K 12K 78643K 8 0 mount 1 1K 1K 78643K 1 0 vnodes 1218 77K 77K 78643K 1241 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 1K 1K 78643K 2 0 sem 10 0K 0K 78643K 10 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 6 17K 25K 78643K 90 0 proc 61 63K 83K 78643K 449 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 2 0 in_multi 47 2K 2K 78643K 50 0 ether_multi 1 0K 0K 78643K 2 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 37 175K 175K 78643K 37 0 exec 0 0K 1K 78643K 213 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 116 22K 22K 78643K 1218 0 UVM aobj 5 2K 2K 78643K 5 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 4 0 NDP 6 0K 0K 78643K 10 0 temp 82 3855K 3919K 78643K 2390 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 19 0 17 1 0 1 1 0 8 0 rtentry 112 45 0 1 2 0 2 2 0 8 0 unpcb 120 98 0 88 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 57 0 57 1 1 0 1 0 8 0 tcpcb 544 103 0 99 2 0 2 2 0 8 1 inpcb 296 158 0 151 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 15 0 2 1 0 1 1 0 8 0 pfstkey 112 15 0 2 1 0 1 1 0 8 0 pfstate 328 15 0 2 2 0 2 2 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 189 0 0 12 0 12 12 0 8 0 art_table 32 190 0 0 2 0 2 2 0 8 0 art_node 16 44 0 4 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 2 1 1 0 1 0 8 0 semapl 112 8 0 0 1 0 1 1 0 8 0 shmpl 112 2 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1498 0 95 89 0 89 89 0 8 1 ffsino 272 1498 0 95 94 0 94 94 0 8 0 nchpl 144 1798 0 188 60 0 60 60 0 8 0 uvmvnodes 72 1557 0 0 29 0 29 29 0 8 0 vnodes 208 1557 0 0 82 0 82 82 0 8 0 namei 1024 4765 0 4765 1 0 1 1 0 8 1 percpumem 16 32 0 0 1 0 1 1 0 8 0 scxspl 192 5805 0 5805 8 1 7 7 0 8 7 plimitpl 152 19 0 11 1 0 1 1 0 8 0 sigapl 424 305 0 273 4 0 4 4 0 8 0 futexpl 56 887 0 886 1 0 1 1 0 8 0 knotepl 112 61 0 42 1 0 1 1 0 8 0 kqueuepl 144 9 0 6 1 0 1 1 0 8 0 pipepl 304 83 0 73 2 1 1 2 0 8 0 fdescpl 496 290 0 273 3 0 3 3 0 8 0 filepl 152 1545 0 1444 5 0 5 5 0 8 1 lockfpl 104 9 0 8 1 0 1 1 0 8 0 lockfspl 48 5 0 4 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 83 0 74 1 0 1 1 0 8 0 zombiepl 144 273 0 273 2 1 1 1 0 8 1 processpl 992 305 0 273 6 1 5 5 0 8 1 procpl 624 455 0 413 5 1 4 5 0 8 0 sockpl 400 275 0 256 5 2 3 4 0 8 1 mcl64k 65536 1 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 281 0 0 35 0 35 35 0 8 0 mtagpl 96 9 0 0 1 0 1 1 0 8 0 mbufpl 256 286 0 0 18 0 18 18 0 8 0 bufpl 280 3432 0 134 236 0 236 236 0 8 0 anonpl 16 51027 0 31033 82 1 81 81 0 124 0 amapchunkpl 152 1383 0 1214 8 0 8 8 0 158 0 amappl16 192 1666 0 575 57 2 55 55 0 8 0 amappl15 184 10 0 7 1 0 1 1 0 8 0 amappl14 176 23 0 19 1 0 1 1 0 8 0 amappl13 168 28 0 25 1 0 1 1 0 8 0 amappl12 160 45 0 39 1 0 1 1 0 8 0 amappl11 152 65 0 49 1 0 1 1 0 8 0 amappl10 144 19 0 15 1 0 1 1 0 8 0 amappl9 136 417 0 413 1 0 1 1 0 8 0 amappl8 128 364 0 334 2 0 2 2 0 8 0 amappl7 120 117 0 104 1 0 1 1 0 8 0 amappl6 112 23 0 20 1 0 1 1 0 8 0 amappl5 104 216 0 198 1 0 1 1 0 8 0 amappl4 96 486 0 455 1 0 1 1 0 8 0 amappl3 88 103 0 98 1 0 1 1 0 8 0 amappl2 80 1335 0 1264 2 0 2 2 0 8 0 amappl1 72 17045 0 16589 24 14 10 18 0 8 0 amappl 80 710 0 661 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 4 0 0 1 0 1 1 0 8 0 uaddrrnd 24 290 0 273 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 290 0 273 1 0 1 1 0 8 0 vmmpekpl 168 6410 0 6378 2 0 2 2 0 8 0 vmmpepl 168 44977 0 42636 125 6 119 120 0 357 17 vmsppl 368 289 0 273 2 0 2 2 0 8 0 pdppl 4096 587 0 546 7 1 6 6 0 8 0 pvpl 32 166797 0 143475 189 0 189 189 0 265 0 pmappl 232 289 0 273 2 1 1 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 281 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(ffff8000230fe0b0,ffff800000256b80) at intr_handler+0x8f sys/arch/amd64/amd64/intr.c:536 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f uvm_map_lookup_entry(fffffd807efffa10,23419e3b000,ffff8000230fe3d0) at uvm_map_lookup_entry+0x59 uvm_map_entrybyaddr sys/uvm/uvm_map.c:539 [inline] uvm_map_lookup_entry(fffffd807efffa10,23419e3b000,ffff8000230fe3d0) at uvm_map_lookup_entry+0x59 sys/uvm/uvm_map.c:1796 uvmfault_lookup(ffff8000230fe3a8,0) at uvmfault_lookup+0xea sys/uvm/uvm_fault.c:1448 uvm_fault(fffffd807efffa10,23419e3b000,0,1) at uvm_fault+0x7f sys/uvm/uvm_fault.c:524 pageflttrap(ffff8000230fe540,1) at pageflttrap+0x1b8 sys/arch/amd64/amd64/trap.c:221 usertrap(ffff8000230fe540) at usertrap+0x21a sys/arch/amd64/amd64/trap.c:384 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7fffff0280, 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x36 kd_curproc sys/dev/kcov.c:411 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x36 sys/dev/kcov.c:79 uvm_map_inentry(ffff800020e034f8,ffff800020e03570,e313394d07a,ffffffff82422683,ffffffff81aff5d0,6) at uvm_map_inentry+0xbe sys/uvm/uvm_map.c:1890 syscall(ffff800023f1ccf0) at syscall+0x3dc mi_syscall sys/sys/syscall_mi.h:87 [inline] syscall(ffff800023f1ccf0) at syscall+0x3dc sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc6220, count: -7