uvm_fault(0xffffffff82635f00, 0xfffffd0000000018, 0, 1) -> e kernel: page fault trap, code=0 Stopped at bpf_mtap+0x58: movl 0x18(%rbx),%r12d ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xffffffff82635f00, 0xfffffd0000000018, 0, 1) -> e bpf_mtap(ffff8000009d74c0,fffffd807f01f100,2) at bpf_mtap+0x58 sys/net/bpf.c:1273 end trace frame: 0xffff800023fe4c30, count: 0 ddb{1}> trace bpf_mtap(ffff8000009d74c0,fffffd807f01f100,2) at bpf_mtap+0x58 sys/net/bpf.c:1273 tun_dev_read(5d00,ffff800023fe4ea8,10) at tun_dev_read+0x113 spec_read(ffff800023fe4cf0) at spec_read+0xf1 sys/kern/spec_vnops.c:222 VOP_READ(fffffd806e58d0d8,ffff800023fe4ea8,10,fffffd807f7bf4e0) at VOP_READ+0xbf sys/kern/vfs_vops.c:247 vn_read(fffffd8066f46b68,ffff800023fe4ea8,0) at vn_read+0x124 sys/kern/vfs_vnops.c:375 dofilereadv(ffff800020e92018,f0,ffff800023fe4ea8,0,ffff800023fe4f90) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020e92018,ffff800023fe4f40,ffff800023fe4f90) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800023fe5010) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023fe5010) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xaf164e6a5e0, count: -9 ddb{1}> show registers rdi 0xffffffff819d8175 bpf_mtap+0x55 rsi 0x14a rbp 0xffff800023fe4bc0 rbx 0xfffffd0000000000 rdx 0x14b rcx 0xffff800020f72000 rax 0xe r8 0xffffffff82219146 pp_r600_decoded_lanes+0x6e6c r9 0xffff8000009d5664 r10 0xa r11 0x81a63f9989e555e6 r12 0xe r13 0x2 r14 0xfffffd807f01f100 r15 0xffff8000009d74c0 rip 0xffffffff819d8178 bpf_mtap+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800023fe4b40 ss 0x10 bpf_mtap+0x58: movl 0x18(%rbx),%r12d ddb{1}> show proc PROC (syz-executor.0) pid=319184 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020e92c48,0xffffffff8267b150 process=0xffff800020ec7738 user=0xffff800023fe0000, vmspace=0xfffffd806e962008 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 88752 337899 83805 0 7 0 syz-executor.0 *88752 319184 83805 0 7 0x4000000 syz-executor.0 8058 314134 35808 0 2 0 syz-executor.1 8058 252455 35808 0 2 0x4000000 syz-executor.1 78352 100816 0 0 3 0x14200 acct acct 6710 25293 0 0 3 0x14200 bored sosplice 35808 133349 25967 0 3 0x82 nanosleep syz-executor.1 83805 411610 25967 0 3 0x82 nanosleep syz-executor.0 25967 391886 2796 0 3 0x82 thrsleep syz-fuzzer 25967 3768 2796 0 3 0x4000082 thrsleep syz-fuzzer 25967 476620 2796 0 3 0x4000082 thrsleep syz-fuzzer 25967 199172 2796 0 3 0x4000082 thrsleep syz-fuzzer 25967 505028 2796 0 3 0x4000082 thrsleep syz-fuzzer 25967 170962 2796 0 3 0x4000082 thrsleep syz-fuzzer 25967 128397 2796 0 3 0x4000082 thrsleep syz-fuzzer 25967 21481 2796 0 3 0x4000082 thrsleep syz-fuzzer 25967 98865 2796 0 3 0x4000082 kqread syz-fuzzer 25967 487629 2796 0 3 0x4000082 thrsleep syz-fuzzer 2796 401002 9247 0 3 0x10008a pause ksh 9247 462344 50582 0 3 0x92 select sshd 49079 138978 1 0 3 0x100083 ttyin getty 50582 151281 1 0 3 0x80 select sshd 13895 160147 48308 74 3 0x100092 bpf pflogd 48308 63095 1 0 3 0x80 netio pflogd 24813 77948 70970 73 3 0x100090 kqread syslogd 70970 172717 1 0 3 0x100082 netio syslogd 99377 88050 1 77 3 0x100090 poll dhclient 34152 159988 1 0 3 0x80 poll dhclient 33125 401069 0 0 3 0x14200 bored smr 29785 361369 0 0 2 0x14200 zerothread 72375 513067 0 0 3 0x14200 aiodoned aiodoned 79689 479935 0 0 3 0x14200 syncer update 549 468591 0 0 3 0x14200 cleaner cleaner 83355 478443 0 0 3 0x14200 reaper reaper 85317 235657 0 0 3 0x14200 pgdaemon pagedaemon 78442 509930 0 0 3 0x14200 bored crynlk 20419 485398 0 0 3 0x14200 bored crypto 63913 245589 0 0 3 0x40014200 acpi0 acpi0 35320 90206 0 0 3 0x40014200 idle1 87025 341382 0 0 3 0x14200 bored softnet 80486 161247 0 0 3 0x14200 bored systqmp 3619 462639 0 0 3 0x14200 bored systq 11531 327155 0 0 3 0x40014200 bored softclock 75401 156228 0 0 3 0x40014200 idle0 1 384335 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 88752 (syz-executor.0) thread 0xffff800020e92018 (319184) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82667d70) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 vn_read+0x45 sys/kern/vfs_vnops.c:357 #2 dofilereadv+0x1a1 sys/kern/sys_generic.c:237 #3 sys_read+0x83 sys/kern/sys_generic.c:157 #4 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #4 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #5 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9558 6622K 6733K 78643K 11249 0 pcb 13 8K 8K 78643K 93 0 rtable 85 3K 4K 78643K 329 0 ifaddr 82 15K 15K 78643K 127 0 counters 41 33K 33K 78643K 53 0 ioctlops 0 0K 4K 78643K 1492 0 iov 0 0K 16K 78643K 89 0 mount 1 1K 1K 78643K 1 0 vnodes 1215 76K 77K 78643K 1426 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 9 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 26 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 6 17K 25K 78643K 667 0 sigio 0 0K 0K 78643K 10 0 proc 62 63K 95K 78643K 485 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 35 0 in_multi 68 3K 3K 78643K 124 0 ether_multi 1 0K 0K 78643K 9 0 mrt 0 0K 0K 78643K 8 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 1K 78643K 242 0 pfkey data 0 0K 0K 78643K 3 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 125 71K 71K 78643K 3082 0 UVM aobj 21 4K 4K 78643K 29 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 1 0K 0K 78643K 47 0 NDP 14 0K 0K 78643K 28 0 temp 140 3046K 3114K 78643K 12222 0 kqueue 3 4K 12K 78643K 21 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 6 0 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 63 0 61 1 0 1 1 0 8 0 rtentry 112 63 0 32 2 0 2 2 0 8 0 unpcb 120 526 0 516 1 0 1 1 0 8 0 syncache 264 14 0 14 3 2 1 1 0 8 1 tcpqe 32 259 0 259 1 1 0 1 0 8 0 tcpcb 544 200 0 196 2 1 1 2 0 8 0 inpcb 280 1299 0 1291 2 0 2 2 0 8 1 rttmr 72 1 0 1 1 0 1 1 0 8 1 nd6 48 10 0 9 1 0 1 1 0 8 0 pkpcb 40 12 0 12 2 2 0 1 0 8 0 ppxss 1128 1 0 1 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 33 0 17 1 0 1 1 0 8 0 pfstkey 112 33 0 17 1 0 1 1 0 8 0 pfstate 328 33 0 17 3 0 3 3 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 290 0 156 13 4 9 13 0 8 0 art_table 32 292 0 156 2 0 2 2 0 8 0 art_node 16 62 0 33 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 1 2 1 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 20 0 10 1 0 1 1 0 8 0 shmpl 112 27 0 8 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2246 0 844 89 1 88 89 0 8 0 ffsino 272 2246 0 844 95 1 94 94 0 8 0 nchpl 144 3396 0 1797 60 0 60 60 0 8 0 uvmvnodes 72 2422 0 0 45 0 45 45 0 8 0 vnodes 208 2422 0 0 128 0 128 128 0 8 0 namei 1024 9033 0 9033 2 1 1 1 0 8 1 percpumem 16 37 0 6 1 0 1 1 0 8 0 vcpupl 1984 4 0 0 1 0 1 1 0 8 0 vmpool 560 6 0 2 1 0 1 1 0 8 0 scxspl 192 9019 0 9019 8 7 1 7 0 8 1 plimitpl 152 51 0 43 1 0 1 1 0 8 0 sigapl 424 884 0 850 4 0 4 4 0 8 0 futexpl 56 9186 0 9186 1 0 1 1 0 8 1 knotepl 112 82 0 63 1 0 1 1 0 8 0 kqueuepl 144 89 0 87 1 0 1 1 0 8 0 pipelkpl 48 146 0 135 1 0 1 1 0 8 0 pipepl 120 292 0 271 2 1 1 2 0 8 0 fdescpl 496 867 0 850 3 0 3 3 0 8 0 filepl 152 5192 0 5087 7 2 5 6 0 8 0 lockfpl 104 141 0 140 1 0 1 1 0 8 0 lockfspl 48 49 0 48 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 21 0 10 1 0 1 1 0 8 0 ucredpl 96 486 0 477 1 0 1 1 0 8 0 zombiepl 144 850 0 850 2 1 1 1 0 8 1 processpl 984 884 0 850 6 1 5 5 0 8 0 procpl 624 2294 0 2249 4 0 4 4 0 8 0 sosppl 128 2 0 2 1 1 0 1 0 8 0 sockpl 400 1953 0 1933 6 2 4 4 0 8 1 mcl64k 65536 10 0 0 2 0 2 2 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 6 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 10 0 0 2 0 2 2 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 187 0 0 23 0 23 23 0 8 0 mtagpl 80 30 0 0 1 0 1 1 0 8 0 mbufpl 256 247 0 0 15 1 14 15 0 8 0 bufpl 280 4304 0 144 298 0 298 298 0 8 0 anonpl 16 95208 0 79735 80 7 73 79 0 124 8 amapchunkpl 152 5014 0 4867 21 14 7 20 0 158 0 amappl16 192 4531 0 3689 61 17 44 54 0 8 1 amappl15 184 12 0 9 1 0 1 1 0 8 0 amappl14 176 25 0 20 1 0 1 1 0 8 0 amappl13 168 28 0 25 1 0 1 1 0 8 0 amappl12 160 5 0 5 1 1 0 1 0 8 0 amappl11 152 59 0 44 1 0 1 1 0 8 0 amappl10 144 317 0 311 1 0 1 1 0 8 0 amappl9 136 720 0 717 1 0 1 1 0 8 0 amappl8 128 685 0 655 1 0 1 1 0 8 0 amappl7 120 120 0 107 1 0 1 1 0 8 0 amappl6 112 28 0 23 1 0 1 1 0 8 0 amappl5 104 781 0 763 1 0 1 1 0 8 0 amappl4 96 501 0 467 2 1 1 2 0 8 0 amappl3 88 124 0 118 1 0 1 1 0 8 0 amappl2 80 5959 0 5877 2 0 2 2 0 8 0 amappl1 72 28345 0 27890 23 13 10 18 0 8 0 amappl 80 2558 0 2507 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 28 0 8 1 0 1 1 0 8 0 uaddrrnd 24 873 0 852 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 873 0 852 1 0 1 1 0 8 0 vmmpekpl 168 10653 0 10618 2 0 2 2 0 8 0 vmmpepl 168 110995 0 108882 115 18 97 107 0 357 5 vmsppl 368 872 0 852 2 0 2 2 0 8 0 pdppl 4096 1754 0 1708 7 0 7 7 0 8 1 pvpl 32 274787 0 256309 193 12 181 187 0 265 30 pmappl 232 872 0 852 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 273 0 14 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff824cbff0) 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(ffffffff82667b68) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82667b68) at __mp_lock+0x127 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:89 Xsoftclock() at Xsoftclock+0x1f __sanitizer_cov_trace_switch(0,ffffffff824f30b0) at __sanitizer_cov_trace_switch+0x26 sys/dev/kcov.c:184 clock_gettime(ffff800020e93398,0,ffff800020f69808) at clock_gettime+0x3b sys/kern/kern_time.c:114 sys_clock_gettime(ffff800020e93398,ffff800020f69870,ffff800020f698c0) at sys_clock_gettime+0x4c sys/kern/kern_time.c:165 syscall(ffff800020f69940) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020f69940) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc9620, count: -11 ddb{0}> machine ddbcpu 1 Stopped at bpf_mtap+0x58: movl 0x18(%rbx),%r12d ddb{1}> trace bpf_mtap(ffff8000009d74c0,fffffd807f01f100,2) at bpf_mtap+0x58 sys/net/bpf.c:1273 tun_dev_read(5d00,ffff800023fe4ea8,10) at tun_dev_read+0x113 spec_read(ffff800023fe4cf0) at spec_read+0xf1 sys/kern/spec_vnops.c:222 VOP_READ(fffffd806e58d0d8,ffff800023fe4ea8,10,fffffd807f7bf4e0) at VOP_READ+0xbf sys/kern/vfs_vops.c:247 vn_read(fffffd8066f46b68,ffff800023fe4ea8,0) at vn_read+0x124 sys/kern/vfs_vnops.c:375 dofilereadv(ffff800020e92018,f0,ffff800023fe4ea8,0,ffff800023fe4f90) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020e92018,ffff800023fe4f40,ffff800023fe4f90) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800023fe5010) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023fe5010) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xaf164e6a5e0, count: -9