login: uvm_fault(0xffffffff8291b868, 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(0xffffffff8291b868, 0xa, 0, 1) -> e vio_rxeof(ffff80000017c000) at vio_rxeof+0x191 sys/dev/pv/if_vio.c:1018 end trace frame: 0xffff800020d90e10, 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(ffff800020d90e70,ffff800000256b80) at intr_handler+0x8f sys/arch/amd64/amd64/intr.c:536 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f acpicpu_idle() at acpicpu_idle+0x331 sys/dev/acpi/acpicpu.c:1187 sched_idle(ffffffff8275aff0) at sched_idle+0x3f7 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -6 ddb{0}> show registers rdi 0xc rsi 0xc rbp 0xffff800020d90db0 rbx 0xffff80000017c000 rdx 0 rcx 0xffffffff8275aff0 cpu_info_full_primary+0x1ff0 rax 0xffffffff8275aff0 cpu_info_full_primary+0x1ff0 r8 0x2 r9 0 r10 0xf1687c903fc42806 r11 0x479e417767172ffe r12 0xffff800000024c00 r13 0xc r14 0xfffffd8069ccfa00 r15 0 rip 0xffffffff8113c191 vio_rxeof+0x191 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020d90d20 ss 0x10 vio_rxeof+0x191: movzwl 0xa(%r15),%eax ddb{0}> show proc PROC (idle0) pid=22509 stat=onproc flags process=14000 proc=40000200 pri=0, usrpri=50, nice=20 forw=0xcf734e44215a31ba, list=0xffff800020d89d40,0xffff800020d89870 process=0xffff800020d8b360 user=0xffff800020d8c000, vmspace=0xffffffff8291b868 estcpu=0, cpticks=2938, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 7582 375631 46085 0 7 0 syz-executor.0 7582 325599 46085 0 3 0x4000080 fsleep syz-executor.0 81958 479985 0 0 3 0x14200 bored sosplice 76810 176021 45370 0 3 0x2 biowait syz-executor.1 46085 253154 45370 0 3 0x82 nanosleep syz-executor.0 45370 137586 10160 0 3 0x82 kqread syz-fuzzer 45370 473911 10160 0 3 0x4000082 nanosleep syz-fuzzer 45370 13438 10160 0 3 0x4000082 thrsleep syz-fuzzer 45370 79755 10160 0 3 0x4000082 thrsleep syz-fuzzer 45370 147702 10160 0 3 0x4000082 thrsleep syz-fuzzer 45370 14564 10160 0 3 0x4000082 thrsleep syz-fuzzer 45370 297382 10160 0 3 0x4000082 thrsleep syz-fuzzer 45370 37212 10160 0 3 0x4000082 thrsleep syz-fuzzer 45370 227919 10160 0 3 0x4000082 thrsleep syz-fuzzer 45370 395405 10160 0 3 0x4000082 thrsleep syz-fuzzer 10160 231950 19825 0 3 0x10008a pause ksh 19825 331363 11234 0 3 0x92 select sshd 76187 249836 1 0 3 0x100083 ttyin getty 11234 56950 1 0 3 0x80 select sshd 84339 242949 98109 74 3 0x100092 bpf pflogd 98109 171657 1 0 3 0x80 netio pflogd 10515 51524 83460 73 3 0x100090 kqread syslogd 83460 195377 1 0 3 0x100082 netio syslogd 31057 153233 1 77 3 0x100090 poll dhclient 33330 189942 1 0 3 0x80 poll dhclient 59500 31422 0 0 3 0x14200 bored smr 45984 129735 0 0 3 0x14200 pgzero zerothread 76415 298726 0 0 3 0x14200 aiodoned aiodoned 5829 174626 0 0 3 0x14200 syncer update 99187 39843 0 0 3 0x14200 cleaner cleaner 82046 200974 0 0 3 0x14200 reaper reaper 8701 37187 0 0 3 0x14200 pgdaemon pagedaemon 13875 4047 0 0 3 0x14200 bored crynlk 8730 103283 0 0 3 0x14200 bored crypto 94972 150800 0 0 3 0x40014200 acpi0 acpi0 79320 12372 0 0 3 0x40014200 idle1 9402 486376 0 0 3 0x14200 bored softnet 50014 398901 0 0 3 0x14200 bored systqmp 57997 205350 0 0 3 0x14200 bored systq 99506 74582 0 0 3 0x40014200 bored softclock *18895 22509 0 0 7 0x40014200 idle0 1 379851 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 76810 (syz-executor.1) thread 0xffff800020ddd868 (176021) exclusive rrwlock inode r = 0 (0xfffffd8068551920) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 rw_enter+0x453 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603 #4 vn_lock+0x81 sys/kern/vfs_vnops.c:575 #5 vget+0x1c8 sys/kern/vfs_subr.c:671 #6 ufs_ihashget+0x141 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x74 sys/ufs/ffs/ffs_vfsops.c:1329 #8 ufs_lookup+0x14b7 sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x5b sys/kern/vfs_vops.c:90 #10 vfs_lookup+0x7a6 sys/kern/vfs_lookup.c:568 #11 namei+0x63c sys/kern/vfs_lookup.c:249 #12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1853 #13 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80685510a0) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 rw_enter+0x453 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603 #4 vn_lock+0x81 sys/kern/vfs_vnops.c:575 #5 vfs_lookup+0xe6 sys/kern/vfs_lookup.c:419 #6 namei+0x63c sys/kern/vfs_lookup.c:249 #7 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1853 #8 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #9 Xsyscall+0x128 Process 18895 (idle0) thread 0xffff800020d89ad0 (22509) 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 acpicpu_idle+0x331 sys/dev/acpi/acpicpu.c:1187 #4 sched_idle+0x3f7 sys/kern/kern_sched.c:178 #5 proc_trampoline+0x1c ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9502 6534K 6608K 78643K 10690 0 pcb 13 8K 8K 78643K 29 0 rtable 98 4K 4K 78643K 237 0 ifaddr 58 12K 12K 78643K 79 0 counters 43 33K 34K 78643K 45 0 ioctlops 0 0K 4K 78643K 1476 0 iov 0 0K 2K 78643K 158 0 mount 1 1K 1K 78643K 1 0 vnodes 1220 77K 77K 78643K 1251 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 6 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 34 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 131 0 proc 60 63K 83K 78643K 439 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 3 0 in_multi 36 2K 2K 78643K 62 0 ether_multi 1 0K 0K 78643K 3 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 37 175K 175K 78643K 37 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 118 23K 23K 78643K 1317 0 UVM aobj 9 2K 2K 78643K 15 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 8 0 NDP 9 0K 0K 78643K 19 0 temp 82 3852K 3916K 78643K 3646 0 kqueue 3 4K 12K 78643K 11 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 56 0 18 2 0 2 2 0 8 0 unpcb 120 77 0 67 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 358 0 358 1 0 1 1 0 8 1 tcpcb 544 40 0 36 2 0 2 2 0 8 1 inpcb 296 131 0 124 2 0 2 2 0 8 1 nd6 48 12 0 9 1 0 1 1 0 8 0 ppxss 1136 1 0 1 1 0 1 1 0 8 1 pffrent 40 2 0 2 1 0 1 1 0 8 1 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 1 0 0 1 0 1 1 0 8 0 pfstitem 24 21 0 0 1 0 1 1 0 8 0 pfstkey 112 21 0 0 1 0 1 1 0 8 0 pfstate 328 21 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 256 234 0 79 14 0 14 14 0 8 1 art_table 32 235 0 79 2 0 2 2 0 8 0 art_node 16 55 0 20 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 2 1 0 1 1 0 8 0 semupl 112 4 0 4 1 0 1 1 0 8 1 semapl 112 32 0 22 1 0 1 1 0 8 0 shmpl 112 12 0 6 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1551 0 146 89 0 89 89 0 8 0 ffsino 272 1551 0 146 95 1 94 94 0 8 0 nchpl 144 1972 0 363 60 0 60 60 0 8 0 uvmvnodes 72 1615 0 0 30 0 30 30 0 8 0 vnodes 208 1615 0 0 85 0 85 85 0 8 0 namei 1024 5141 0 5141 2 1 1 1 0 8 1 percpumem 16 33 0 1 1 0 1 1 0 8 0 scxspl 192 5666 0 5665 8 1 7 7 0 8 6 plimitpl 152 27 0 19 1 0 1 1 0 8 0 sigapl 424 347 0 315 4 0 4 4 0 8 0 futexpl 56 1622 0 1621 1 0 1 1 0 8 0 knotepl 112 69 0 50 1 0 1 1 0 8 0 kqueuepl 144 31 0 29 1 0 1 1 0 8 0 pipepl 304 93 0 83 2 0 2 2 0 8 1 fdescpl 496 331 0 315 3 0 3 3 0 8 0 filepl 152 1771 0 1671 6 1 5 5 0 8 1 lockfpl 104 11 0 10 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 95 0 86 1 0 1 1 0 8 0 zombiepl 144 315 0 315 2 1 1 1 0 8 1 processpl 992 347 0 315 6 1 5 5 0 8 0 procpl 624 556 0 514 4 0 4 4 0 8 0 sosppl 128 2 0 2 1 0 1 1 0 8 1 sockpl 400 227 0 208 5 1 4 4 0 8 2 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 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 240 0 0 29 0 29 29 0 8 0 mtagpl 96 7 0 0 1 0 1 1 0 8 0 mbufpl 256 269 0 0 17 0 17 17 0 8 0 bufpl 280 3503 0 133 241 0 241 241 0 8 0 anonpl 16 46683 0 29903 69 1 68 68 0 124 0 amapchunkpl 152 1566 0 1413 8 0 8 8 0 158 1 amappl16 192 1335 0 431 46 0 46 46 0 8 0 amappl15 184 99 0 95 1 0 1 1 0 8 0 amappl14 176 21 0 18 1 0 1 1 0 8 0 amappl13 168 28 0 25 1 0 1 1 0 8 0 amappl12 160 7 0 6 1 0 1 1 0 8 0 amappl11 152 53 0 38 1 0 1 1 0 8 0 amappl10 144 113 0 107 1 0 1 1 0 8 0 amappl9 136 391 0 389 1 0 1 1 0 8 0 amappl8 128 333 0 305 2 0 2 2 0 8 1 amappl7 120 168 0 154 1 0 1 1 0 8 0 amappl6 112 25 0 20 1 0 1 1 0 8 0 amappl5 104 230 0 212 1 0 1 1 0 8 0 amappl4 96 494 0 462 1 0 1 1 0 8 0 amappl3 88 102 0 97 1 0 1 1 0 8 0 amappl2 80 1741 0 1673 2 0 2 2 0 8 0 amappl1 72 18020 0 17575 23 12 11 18 0 8 1 amappl 80 806 0 760 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 14 0 6 1 0 1 1 0 8 0 uaddrrnd 24 331 0 315 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 331 0 315 1 0 1 1 0 8 0 vmmpekpl 168 6550 0 6512 2 0 2 2 0 8 0 vmmpepl 168 48556 0 46489 118 5 113 113 0 357 18 vmsppl 368 330 0 315 2 0 2 2 0 8 0 pdppl 4096 669 0 630 7 1 6 6 0 8 0 pvpl 32 161546 0 141597 167 0 167 167 0 265 4 pmappl 232 330 0 315 2 0 2 2 0 8 1 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 277 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(ffff800020d90e70,ffff800000256b80) at intr_handler+0x8f sys/arch/amd64/amd64/intr.c:536 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f acpicpu_idle() at acpicpu_idle+0x331 sys/dev/acpi/acpicpu.c:1187 sched_idle(ffffffff8275aff0) at sched_idle+0x3f7 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -6 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(8e8ca,8e8cb) at __sanitizer_cov_trace_cmp4+0x11 kd_curproc sys/dev/kcov.c:397 [inline] __sanitizer_cov_trace_cmp4(8e8ca,8e8cb) at __sanitizer_cov_trace_cmp4+0x11 trace_cmp sys/dev/kcov.c:104 [inline] __sanitizer_cov_trace_cmp4(8e8ca,8e8cb) at __sanitizer_cov_trace_cmp4+0x11 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(ffff8000230f9ac0,1) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 usertrap(ffff8000230f9ac0) at usertrap+0x21a sys/arch/amd64/amd64/trap.c:384 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffe0500, count: -8