uvm_fault(0xffffffff82805ac0, 0xfffffd0000000018, 0, 1) -> e kernel: page fault trap, code=0 Stopped at _bpf_mtap+0x68: movl 0x18(%rbx),%r13d ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xffffffff82805ac0, 0xfffffd0000000018, 0, 1) -> e _bpf_mtap(ffff800000afa600,fffffd806d458300,fffffd806d458300,2) at _bpf_mtap+0x68 sys/net/bpf.c:1281 end trace frame: 0xffff800021f0f8d0, count: 0 ddb{0}> trace _bpf_mtap(ffff800000afa600,fffffd806d458300,fffffd806d458300,2) at _bpf_mtap+0x68 sys/net/bpf.c:1281 tun_dev_read(5d01,ffff800021f0fb48,10) at tun_dev_read+0x113 spec_read(ffff800021f0f990) at spec_read+0xf1 sys/kern/spec_vnops.c:222 VOP_READ(fffffd806ed7d0d8,ffff800021f0fb48,10,fffffd807f7bf660) at VOP_READ+0xbf sys/kern/vfs_vops.c:247 vn_read(fffffd806ca49d20,ffff800021f0fb48,0) at vn_read+0x124 sys/kern/vfs_vnops.c:375 dofilereadv(ffff800020e23398,f0,ffff800021f0fb48,0,ffff800021f0fc30) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020e23398,ffff800021f0fbe0,ffff800021f0fc30) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800021f0fcb0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021f0fcb0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xece00a1c160, count: -9 ddb{0}> show registers rdi 0xffffffff821e73c5 _bpf_mtap+0x65 rsi 0x14b rbp 0xffff800021f0f860 rbx 0xfffffd0000000000 rdx 0x14c rcx 0xffff8000230f2000 rax 0xe r8 0xffffffff82421dd3 pp_r600_decoded_lanes+0x3916 r9 0xffff800000afb664 r10 0xa r11 0xabe3e1aa085ca77b r12 0xfffffd806d458300 r13 0xe r14 0x2 r15 0xffff800000afa600 rip 0xffffffff821e73c8 _bpf_mtap+0x68 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021f0f7c0 ss 0x10 _bpf_mtap+0x68: movl 0x18(%rbx),%r13d ddb{0}> show proc PROC (syz-executor.1) pid=521815 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=78, nice=20 forw=0xffffffffffffffff, list=0xffff800020e23128,0xffffffff828fd730 process=0xffff800020e08020 user=0xffff800021f0a000, vmspace=0xfffffd8067945b98 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 41890 372891 60480 0 2 0 syz-executor.1 *41890 521815 60480 0 7 0x4000000 syz-executor.1 60480 61978 86104 0 3 0x82 nanosleep syz-executor.1 66354 460912 0 0 3 0x14200 bored sosplice 92983 415972 86104 0 3 0x82 piperd syz-executor.0 86104 67067 76643 0 3 0x82 thrsleep syz-fuzzer 86104 501229 76643 0 3 0x4000082 nanosleep syz-fuzzer 86104 503383 76643 0 3 0x4000082 thrsleep syz-fuzzer 86104 449895 76643 0 3 0x4000082 thrsleep syz-fuzzer 86104 124355 76643 0 3 0x4000082 thrsleep syz-fuzzer 86104 221556 76643 0 3 0x4000082 thrsleep syz-fuzzer 86104 435964 76643 0 3 0x4000082 thrsleep syz-fuzzer 86104 182006 76643 0 3 0x4000082 thrsleep syz-fuzzer 86104 134517 76643 0 3 0x4000082 kqread syz-fuzzer 86104 139334 76643 0 7 0x4000002 syz-fuzzer 76643 82134 43393 0 3 0x10008a pause ksh 43393 496207 80641 0 3 0x92 select sshd 62872 477257 1 0 3 0x100083 ttyin getty 80641 42345 1 0 3 0x80 select sshd 31372 124783 38914 74 3 0x100092 bpf pflogd 38914 46651 1 0 3 0x80 netio pflogd 49257 202036 50409 73 3 0x100090 kqread syslogd 50409 358392 1 0 3 0x100082 netio syslogd 57362 15712 1 77 3 0x100090 poll dhclient 58343 285057 1 0 3 0x80 poll dhclient 42688 75752 0 0 3 0x14200 bored smr 44995 191259 0 0 2 0x14200 zerothread 14853 262631 0 0 3 0x14200 aiodoned aiodoned 88212 391778 0 0 3 0x14200 syncer update 52150 476432 0 0 3 0x14200 cleaner cleaner 60244 355595 0 0 3 0x14200 reaper reaper 31805 70234 0 0 3 0x14200 pgdaemon pagedaemon 63292 85023 0 0 3 0x14200 bored crynlk 18500 55942 0 0 3 0x14200 bored crypto 15204 346305 0 0 3 0x40014200 acpi0 acpi0 73999 133690 0 0 3 0x40014200 idle1 32683 474264 0 0 3 0x14200 bored softnet 45395 374151 0 0 3 0x14200 bored systqmp 16825 417014 0 0 3 0x14200 bored systq 4482 166625 0 0 2 0x40014200 softclock 64508 315413 0 0 3 0x40014200 idle0 1 364838 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 41890 (syz-executor.1) thread 0xffff800020e23398 (521815) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82902548) #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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9556 6753K 7247K 78643K 13290 0 pcb 13 8K 8K 78643K 64 0 rtable 124 5K 7K 78643K 482 0 ifaddr 91 18K 18K 78643K 149 0 sysctl 3 1K 1K 78643K 3 0 counters 43 33K 34K 78643K 57 0 ioctlops 0 0K 4K 78643K 1540 0 iov 0 0K 32K 78643K 319 0 mount 1 1K 1K 78643K 1 0 vnodes 1230 77K 78K 78643K 1880 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 133 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 948 0 sigio 0 0K 0K 78643K 9 0 proc 62 63K 95K 78643K 534 0 subproc 32 2K 2K 78643K 51 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 52 0 in_multi 67 3K 3K 78643K 159 0 ether_multi 1 0K 0K 78643K 11 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 55 254K 254K 78643K 55 0 exec 0 0K 1K 78643K 253 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 135 112K 113K 78643K 3617 0 UVM aobj 14 2K 2K 78643K 24 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 63 0 NDP 13 0K 0K 78643K 37 0 temp 120 3864K 3932K 78643K 22163 0 kqueue 3 4K 16K 78643K 29 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 11 0 3 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 47 0 45 1 0 1 1 0 8 0 rtentry 112 123 0 75 2 0 2 2 0 8 0 unpcb 120 324 0 314 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpcb 544 604 0 599 1 0 1 1 0 8 0 inpcb 296 1135 0 1126 6 4 2 2 0 8 0 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 52 0 37 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 ppxss 1128 1 0 1 1 1 0 1 0 8 0 pffrag 232 3 0 3 1 1 0 1 0 482 0 pffrnode 88 3 0 3 1 1 0 1 0 8 0 pffrent 40 8 0 8 1 1 0 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 pfrktable 1344 17 0 14 1 0 1 1 0 8 0 pfstitem 24 14 0 10 1 0 1 1 0 8 0 pfstkey 112 14 0 10 1 0 1 1 0 8 0 pfstate 328 13 0 10 2 0 2 2 0 8 0 pfsrctr 152 218 0 218 2 2 0 1 0 8 0 pfrule 1360 30 0 22 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 964 0 561 32 4 28 28 0 8 0 art_table 32 965 0 561 4 0 4 4 0 8 0 art_node 16 122 0 79 1 0 1 1 0 8 0 sysvmsgpl 40 17 0 3 1 0 1 1 0 8 0 semapl 112 129 0 119 1 0 1 1 0 8 0 shmpl 112 22 0 10 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2686 0 1277 89 0 89 89 0 8 0 ffsino 272 2686 0 1277 96 2 94 95 0 8 0 nchpl 144 4408 0 2810 60 0 60 60 0 8 0 uvmvnodes 72 3318 0 0 61 0 61 61 0 8 0 vnodes 208 3318 0 0 175 0 175 175 0 8 0 namei 1024 12243 0 12243 3 2 1 1 0 8 1 percpumem 16 39 0 7 1 0 1 1 0 8 0 vcpupl 1984 12 0 0 2 0 2 2 0 8 0 vmpool 560 12 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 5 0 4 1 0 1 1 0 8 0 scxspl 192 22750 0 22750 13 12 1 7 0 8 1 plimitpl 152 49 0 41 1 0 1 1 0 8 0 sigapl 424 1161 0 1129 4 0 4 4 0 8 0 futexpl 56 13935 0 13935 3 2 1 1 0 8 1 knotepl 112 103 0 84 1 0 1 1 0 8 0 kqueuepl 144 72 0 69 1 0 1 1 0 8 0 pipepl 304 171 0 161 6 5 1 2 0 8 0 fdescpl 496 1145 0 1129 3 0 3 3 0 8 0 filepl 152 6521 0 6418 6 1 5 5 0 8 1 lockfpl 104 112 0 111 1 0 1 1 0 8 0 lockfspl 48 40 0 39 1 0 1 1 0 8 0 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 27 0 16 1 0 1 1 0 8 0 ucredpl 96 673 0 664 1 0 1 1 0 8 0 zombiepl 144 1129 0 1129 1 0 1 1 0 8 1 processpl 984 1161 0 1129 5 0 5 5 0 8 0 procpl 624 2780 0 2738 4 0 4 4 0 8 0 sosppl 128 3 0 3 2 2 0 1 0 8 0 sockpl 400 1510 0 1490 9 5 4 4 0 8 2 mcl64k 65536 9 0 0 2 0 2 2 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 9 0 0 1 0 1 1 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 7 0 0 1 0 1 1 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 169 0 0 20 0 20 20 0 8 0 mtagpl 96 287 0 0 7 0 7 7 0 8 0 mbufpl 256 799 0 0 47 0 47 47 0 8 0 bufpl 280 16626 0 10391 446 0 446 446 0 8 0 anonpl 16 134769 0 117787 89 20 69 77 0 124 0 amapchunkpl 152 5662 0 5519 16 10 6 11 0 158 0 amappl16 192 6914 0 5986 54 7 47 51 0 8 0 amappl15 184 96 0 95 1 0 1 1 0 8 0 amappl14 176 98 0 92 1 0 1 1 0 8 0 amappl13 168 35 0 32 1 0 1 1 0 8 0 amappl12 160 8 0 6 1 0 1 1 0 8 0 amappl11 152 62 0 47 1 0 1 1 0 8 0 amappl10 144 19 0 16 1 0 1 1 0 8 0 amappl9 136 1137 0 1132 1 0 1 1 0 8 0 amappl8 128 368 0 340 1 0 1 1 0 8 0 amappl7 120 129 0 114 1 0 1 1 0 8 0 amappl6 112 31 0 25 1 0 1 1 0 8 0 amappl5 104 1039 0 1023 1 0 1 1 0 8 0 amappl4 96 499 0 472 1 0 1 1 0 8 0 amappl3 88 204 0 198 1 0 1 1 0 8 0 amappl2 80 8233 0 8164 2 0 2 2 0 8 0 amappl1 72 33392 0 32941 23 13 10 18 0 8 0 amappl 80 3051 0 2999 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 23 0 10 1 0 1 1 0 8 0 uaddrrnd 24 1157 0 1129 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1157 0 1129 1 0 1 1 0 8 0 vmmpekpl 168 11968 0 11928 2 0 2 2 0 8 0 vmmpepl 168 143799 0 141695 139 46 93 121 0 357 0 vmsppl 368 1156 0 1129 4 1 3 3 0 8 0 pdppl 4096 2321 0 2270 8 1 7 7 0 8 0 pvpl 32 407073 0 387706 208 51 157 179 0 265 0 pmappl 232 1156 0 1129 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 326 0 18 9 0 9 9 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace _bpf_mtap(ffff800000afa600,fffffd806d458300,fffffd806d458300,2) at _bpf_mtap+0x68 sys/net/bpf.c:1281 tun_dev_read(5d01,ffff800021f0fb48,10) at tun_dev_read+0x113 spec_read(ffff800021f0f990) at spec_read+0xf1 sys/kern/spec_vnops.c:222 VOP_READ(fffffd806ed7d0d8,ffff800021f0fb48,10,fffffd807f7bf660) at VOP_READ+0xbf sys/kern/vfs_vops.c:247 vn_read(fffffd806ca49d20,ffff800021f0fb48,0) at vn_read+0x124 sys/kern/vfs_vnops.c:375 dofilereadv(ffff800020e23398,f0,ffff800021f0fb48,0,ffff800021f0fc30) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020e23398,ffff800021f0fbe0,ffff800021f0fc30) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800021f0fcb0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021f0fcb0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xece00a1c160, 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 end of kernel end trace frame: 0xc0002874d8, count: -3