uvm_fault(0xfffffd807effe2e0, 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(0xfffffd807effe2e0, 0xa, 0, 1) -> e vio_rxeof(ffff80000017c000) at vio_rxeof+0x191 sys/dev/pv/if_vio.c:1018 end trace frame: 0xffff8000230fbd20, 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(ffff8000230fbd80,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_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x20 trace_cmp sys/dev/kcov.c:104 [inline] __sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x20 sys/dev/kcov.c:163 witness_warn(2,0,ffffffff82478768) at witness_warn+0x38a sys/kern/subr_witness.c:1431 userret(ffff800020e0a398) at userret+0x360 sys/kern/kern_sig.c:1898 syscall(ffff8000230fc060) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff8000230fc060) at syscall+0x55f sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff82d0, count: -9 ddb{0}> show registers rdi 0xc rsi 0xc rbp 0xffff8000230fbcc0 rbx 0xffff80000017c000 rdx 0 rcx 0xffffffff8275aff0 cpu_info_full_primary+0x1ff0 rax 0xffffffff8275aff0 cpu_info_full_primary+0x1ff0 r8 0x2 r9 0 r10 0xc5cf2685fbda382b r11 0x319f1f18f6c45ff1 r12 0xffff800000024c00 r13 0xc r14 0xfffffd806dc16e00 r15 0 rip 0xffffffff8113c191 vio_rxeof+0x191 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000230fbc30 ss 0x10 vio_rxeof+0x191: movzwl 0xa(%r15),%eax ddb{0}> show proc PROC (syz-executor.0) pid=253989 stat=onproc flags process=0 proc=0 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020e0a128,0xffff800020e099e8 process=0xffff800020df03f0 user=0xffff8000230f7000, vmspace=0xfffffd807effe2e0 estcpu=36, cpticks=7, pctcpu=0.0 user=0, sys=0, intr=1 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *18352 253989 5840 0 7 0 syz-executor.0 18352 224521 5840 0 3 0x4000080 fsleep syz-executor.0 18352 320500 5840 0 3 0x4000080 fsleep syz-executor.0 18352 155697 5840 0 3 0x4000080 ttyout syz-executor.0 61918 200887 59379 0 7 0x2 syz-executor.1 5840 155139 59379 0 3 0x82 nanosleep syz-executor.0 59379 306333 43826 0 3 0x82 nanosleep syz-fuzzer 59379 491598 43826 0 3 0x4000082 nanosleep syz-fuzzer 59379 151732 43826 0 3 0x4000082 thrsleep syz-fuzzer 59379 468064 43826 0 3 0x4000082 kqread syz-fuzzer 59379 345595 43826 0 3 0x4000082 thrsleep syz-fuzzer 59379 54135 43826 0 3 0x4000082 thrsleep syz-fuzzer 59379 168955 43826 0 3 0x4000082 thrsleep syz-fuzzer 59379 374857 43826 0 3 0x4000082 thrsleep syz-fuzzer 59379 82613 43826 0 3 0x4000082 thrsleep syz-fuzzer 59379 103324 43826 0 3 0x4000082 thrsleep syz-fuzzer 43826 230355 44619 0 3 0x10008a pause ksh 44619 256075 23210 0 3 0x92 select sshd 23943 184776 1 0 3 0x100083 ttyin getty 23210 127288 1 0 3 0x80 select sshd 88706 472161 96737 74 3 0x100092 bpf pflogd 96737 305666 1 0 3 0x80 netio pflogd 76963 127170 25144 73 3 0x100090 kqread syslogd 25144 406273 1 0 3 0x100082 netio syslogd 26744 235869 1 77 3 0x100090 poll dhclient 45182 426780 1 0 3 0x80 poll dhclient 23557 253222 0 0 3 0x14200 bored smr 9777 184147 0 0 3 0x14200 pgzero zerothread 15853 239616 0 0 3 0x14200 aiodoned aiodoned 86813 345610 0 0 3 0x14200 syncer update 92381 317793 0 0 3 0x14200 cleaner cleaner 70764 414704 0 0 3 0x14200 reaper reaper 92525 206098 0 0 3 0x14200 pgdaemon pagedaemon 64031 182573 0 0 3 0x14200 bored crynlk 80369 149626 0 0 3 0x14200 bored crypto 63645 368220 0 0 3 0x40014200 acpi0 acpi0 78508 316073 0 0 3 0x40014200 idle1 6744 511515 0 0 3 0x14200 bored softnet 83735 508563 0 0 3 0x14200 bored systqmp 49282 39384 0 0 3 0x14200 bored systq 43299 59328 0 0 3 0x40014200 bored softclock 10161 17415 0 0 3 0x40014200 idle0 1 461780 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 18352 (syz-executor.0) thread 0xffff800020e0a398 (253989) 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_const_cmp4+0x20 trace_cmp sys/dev/kcov.c:104 [inline] #3 __sanitizer_cov_trace_const_cmp4+0x20 sys/dev/kcov.c:163 #4 witness_warn+0x38a sys/kern/subr_witness.c:1431 #5 userret+0x360 sys/kern/kern_sig.c:1898 #6 syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:129 [inline] #6 syscall+0x55f sys/arch/amd64/amd64/trap.c:592 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9471 6397K 6849K 78643K 10659 0 pcb 13 8K 8K 78643K 29 0 rtable 105 3K 3K 78643K 206 0 ifaddr 46 11K 11K 78643K 51 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 33K 78643K 43 0 ioctlops 0 0K 4K 78643K 1479 0 mount 1 1K 1K 78643K 1 0 vnodes 1220 77K 77K 78643K 1254 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 12 1K 1K 78643K 28 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 91 0 proc 60 63K 95K 78643K 453 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 40 2K 2K 78643K 51 0 ether_multi 1 0K 0K 78643K 2 0 mrt 0 0K 0K 78643K 2 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 207 0 pfkey data 0 0K 0K 78643K 2 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 122 22K 23K 78643K 1201 0 UVM aobj 3 2K 2K 78643K 3 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 12 0 temp 72 3853K 3917K 78643K 2167 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 19 0 17 1 0 1 1 0 8 0 rtentry 112 48 0 4 2 0 2 2 0 8 0 unpcb 120 49 0 39 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 560 0 560 1 1 0 1 0 8 0 tcpcb 544 24 0 20 1 0 1 1 0 8 0 inpcb 296 103 0 96 2 0 2 2 0 8 1 rttmr 72 1 0 1 1 0 1 1 0 8 1 nd6 48 8 0 2 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 2 0 1 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 12 0 2 1 0 1 1 0 8 0 pfstkey 112 12 0 2 1 0 1 1 0 8 0 pfstate 328 12 0 2 1 0 1 1 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 256 188 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 47 0 7 1 0 1 1 0 8 0 sysvmsgpl 40 12 0 2 1 0 1 1 0 8 0 semupl 112 2 0 2 1 0 1 1 0 8 1 semapl 112 18 0 8 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1501 0 95 88 0 88 88 0 8 0 ffsino 272 1501 0 95 95 1 94 94 0 8 0 nchpl 144 1809 0 199 60 0 60 60 0 8 0 uvmvnodes 72 1567 0 0 29 0 29 29 0 8 0 vnodes 208 1567 0 0 83 0 83 83 0 8 0 namei 1024 4905 0 4905 2 1 1 1 0 8 1 percpumem 16 32 0 0 1 0 1 1 0 8 0 scxspl 192 5376 0 5376 8 7 1 7 0 8 1 plimitpl 152 17 0 9 1 0 1 1 0 8 0 sigapl 424 306 0 275 4 0 4 4 0 8 0 futexpl 56 946 0 944 1 0 1 1 0 8 0 knotepl 112 67 0 48 1 0 1 1 0 8 0 kqueuepl 144 8 0 6 1 0 1 1 0 8 0 pipepl 304 89 0 79 3 1 2 2 0 8 1 fdescpl 496 291 0 275 3 0 3 3 0 8 0 filepl 152 1575 0 1472 6 1 5 5 0 8 0 lockfpl 104 15 0 14 1 0 1 1 0 8 0 lockfspl 48 7 0 6 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 96 203 0 194 1 0 1 1 0 8 0 zombiepl 144 275 0 275 2 1 1 1 0 8 1 processpl 992 306 0 275 6 1 5 5 0 8 1 procpl 624 440 0 397 4 0 4 4 0 8 0 sockpl 400 173 0 154 4 1 3 3 0 8 1 mcl16k 16384 1 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 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 226 0 0 28 0 28 28 0 8 0 mtagpl 96 7 0 0 1 0 1 1 0 8 0 mbufpl 256 231 0 0 14 0 14 14 0 8 0 bufpl 280 3424 0 133 236 0 236 236 0 8 0 anonpl 16 44440 0 27212 71 1 70 70 0 124 0 amapchunkpl 152 1324 0 1165 8 1 7 8 0 158 0 amappl16 192 1243 0 315 47 0 47 47 0 8 0 amappl15 184 31 0 28 1 0 1 1 0 8 0 amappl14 176 25 0 20 1 0 1 1 0 8 0 amappl13 168 57 0 52 1 0 1 1 0 8 0 amappl12 160 44 0 41 1 0 1 1 0 8 0 amappl11 152 57 0 42 1 0 1 1 0 8 0 amappl10 144 21 0 15 1 0 1 1 0 8 0 amappl9 136 383 0 382 1 0 1 1 0 8 0 amappl8 128 344 0 316 1 0 1 1 0 8 0 amappl7 120 118 0 107 1 0 1 1 0 8 0 amappl6 112 23 0 19 1 0 1 1 0 8 0 amappl5 104 166 0 152 1 0 1 1 0 8 0 amappl4 96 520 0 491 1 0 1 1 0 8 0 amappl3 88 130 0 122 1 0 1 1 0 8 0 amappl2 80 1404 0 1334 2 0 2 2 0 8 0 amappl1 72 17232 0 16769 24 14 10 18 0 8 0 amappl 80 688 0 641 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 24 291 0 275 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 291 0 275 1 0 1 1 0 8 0 vmmpekpl 168 6377 0 6345 2 0 2 2 0 8 0 vmmpepl 168 43780 0 41671 131 15 116 121 0 357 20 vmsppl 368 290 0 275 2 0 2 2 0 8 0 pdppl 4096 589 0 550 7 1 6 6 0 8 0 pvpl 32 153649 0 133235 176 5 171 171 0 265 4 pmappl 232 290 0 275 2 1 1 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 268 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(ffff8000230fbd80,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_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x20 trace_cmp sys/dev/kcov.c:104 [inline] __sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x20 sys/dev/kcov.c:163 witness_warn(2,0,ffffffff82478768) at witness_warn+0x38a sys/kern/subr_witness.c:1431 userret(ffff800020e0a398) at userret+0x360 sys/kern/kern_sig.c:1898 syscall(ffff8000230fc060) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff8000230fc060) at syscall+0x55f sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff82d0, 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_cmp4(890fe,890ff) at __sanitizer_cov_trace_cmp4+0x44 kd_curproc sys/dev/kcov.c:411 [inline] __sanitizer_cov_trace_cmp4(890fe,890ff) at __sanitizer_cov_trace_cmp4+0x44 trace_cmp sys/dev/kcov.c:104 [inline] __sanitizer_cov_trace_cmp4(890fe,890ff) at __sanitizer_cov_trace_cmp4+0x44 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(ffff800023104c00,1) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 usertrap(ffff800023104c00) at usertrap+0x21a sys/arch/amd64/amd64/trap.c:384 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffcb640, count: -8