uvm_fault(0xffffffff827afde0, 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(0xffffffff827afde0, 0xfffffd0000000018, 0, 1) -> e _bpf_mtap(ffff800000adb980,fffffd806d528d00,fffffd806d528d00,2) at _bpf_mtap+0x68 sys/net/bpf.c:1281 end trace frame: 0xffff800023fb1720, count: 0 ddb{0}> trace _bpf_mtap(ffff800000adb980,fffffd806d528d00,fffffd806d528d00,2) at _bpf_mtap+0x68 sys/net/bpf.c:1281 tun_dev_read(5d01,ffff800023fb1998,10) at tun_dev_read+0x113 spec_read(ffff800023fb17e0) at spec_read+0xf1 sys/kern/spec_vnops.c:222 VOP_READ(fffffd8065403b80,ffff800023fb1998,10,fffffd807f7bfa20) at VOP_READ+0xbf sys/kern/vfs_vops.c:247 vn_read(fffffd80665fcdc8,ffff800023fb1998,0) at vn_read+0x124 sys/kern/vfs_vnops.c:375 dofilereadv(ffff8000230f89f0,f0,ffff800023fb1998,0,ffff800023fb1a80) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff8000230f89f0,ffff800023fb1a30,ffff800023fb1a80) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800023fb1b00) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023fb1b00) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa6c1c9249d0, count: -9 ddb{0}> show registers rdi 0xffffffff818acdc5 _bpf_mtap+0x65 rsi 0x14d rbp 0xffff800023fb16b0 rbx 0xfffffd0000000000 rdx 0x14e rcx 0xffff800021ee2000 rax 0xe r8 0xffffffff82421aeb pp_r600_decoded_lanes+0x9607 r9 0xffff800000b2be64 r10 0xa r11 0xbeede0af92687e6d r12 0xfffffd806d528d00 r13 0xe r14 0x2 r15 0xffff800000adb980 rip 0xffffffff818acdc8 _bpf_mtap+0x68 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800023fb1610 ss 0x10 _bpf_mtap+0x68: movl 0x18(%rbx),%r13d ddb{0}> show proc PROC (syz-executor.1) pid=207384 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000230f9140,0xffff8000230f8040 process=0xffff800023f21748 user=0xffff800023fac000, vmspace=0xfffffd807eaacd00 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 59253 220240 21109 0 2 0 syz-executor.1 *59253 207384 21109 0 7 0x4000000 syz-executor.1 59253 67042 21109 0 3 0x4000080 fsleep syz-executor.1 33936 259853 3800 0 2 0 syz-executor.0 33936 321663 3800 0 3 0x4000080 fsleep syz-executor.0 33936 73432 3800 0 7 0x4000000 syz-executor.0 33936 191732 3800 0 2 0x4000000 syz-executor.0 3800 99745 32417 0 2 0x482 syz-executor.0 21109 430832 32417 0 3 0x82 nanosleep syz-executor.1 92432 136927 0 0 3 0x14280 nfsidl nfsio 24015 381631 0 0 3 0x14280 nfsidl nfsio 82070 208561 0 0 3 0x14280 nfsidl nfsio 3105 77457 0 0 3 0x14280 nfsidl nfsio 95934 430238 0 0 3 0x14280 nfsidl nfsio 96074 215417 0 0 3 0x14280 nfsidl nfsio 52469 450873 0 0 3 0x14280 nfsidl nfsio 39428 415842 0 0 3 0x14280 nfsidl nfsio 30448 233069 0 0 3 0x14280 nfsidl nfsio 94082 94182 0 0 3 0x14280 nfsidl nfsio 74496 282246 0 0 3 0x14280 nfsidl nfsio 57057 499132 0 0 3 0x14280 nfsidl nfsio 96509 19758 0 0 3 0x14280 nfsidl nfsio 55072 457285 0 0 3 0x14280 nfsidl nfsio 97160 221135 0 0 3 0x14280 nfsidl nfsio 85193 402921 0 0 3 0x14280 nfsidl nfsio 40697 292450 0 0 3 0x14280 nfsidl nfsio 62901 9131 0 0 3 0x14280 nfsidl nfsio 73390 522229 0 0 3 0x14280 nfsidl nfsio 29702 454535 0 0 3 0x14280 nfsidl nfsio 15433 334176 0 0 3 0x14200 acct acct 23218 272774 0 0 3 0x14200 bored sosplice 32417 198326 49187 0 3 0x82 thrsleep syz-fuzzer 32417 345572 49187 0 3 0x4000082 thrsleep syz-fuzzer 32417 239918 49187 0 3 0x4000082 thrsleep syz-fuzzer 32417 158906 49187 0 3 0x4000082 thrsleep syz-fuzzer 32417 327885 49187 0 3 0x4000082 thrsleep syz-fuzzer 32417 332250 49187 0 3 0x4000082 thrsleep syz-fuzzer 32417 211200 49187 0 3 0x4000082 thrsleep syz-fuzzer 32417 219167 49187 0 3 0x4000082 thrsleep syz-fuzzer 32417 383147 49187 0 3 0x4000082 thrsleep syz-fuzzer 32417 48788 49187 0 3 0x4000082 kqread syz-fuzzer 49187 405948 76350 0 3 0x10008a pause ksh 76350 174139 79715 0 3 0x92 select sshd 87379 94477 1 0 3 0x100083 ttyin getty 79715 483754 1 0 3 0x80 select sshd 11475 158561 58461 74 3 0x100092 bpf pflogd 58461 336607 1 0 3 0x80 netio pflogd 55079 490594 43009 73 3 0x100090 kqread syslogd 43009 209569 1 0 3 0x100082 netio syslogd 65006 482774 1 77 3 0x100090 poll dhclient 21514 296336 1 0 3 0x80 poll dhclient 19320 387737 0 0 3 0x14200 bored smr 57121 301948 0 0 2 0x14200 zerothread 81236 323174 0 0 3 0x14200 aiodoned aiodoned 48865 466578 0 0 3 0x14200 syncer update 91683 34588 0 0 3 0x14200 cleaner cleaner 94976 130201 0 0 3 0x14200 reaper reaper 52132 196897 0 0 3 0x14200 pgdaemon pagedaemon 65448 222744 0 0 3 0x14200 bored crynlk 79489 111581 0 0 3 0x14200 bored crypto 42530 9526 0 0 3 0x40014200 acpi0 acpi0 83026 317565 0 0 3 0x40014200 idle1 91558 304383 0 0 3 0x14200 bored softnet 64377 135229 0 0 3 0x14200 bored systqmp 16361 518719 0 0 3 0x14200 bored systq 32124 26702 0 0 3 0x40014200 bored softclock 12778 85047 0 0 3 0x40014200 idle0 1 169083 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 59253 (syz-executor.1) thread 0xffff8000230f89f0 (207384) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff828b1058) #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 9579 6450K 6946K 78643K 12073 0 pcb 13 8K 8K 78643K 193 0 rtable 103 10K 10K 78643K 688 0 ifaddr 117 21K 21K 78643K 289 0 sysctl 2 0K 0K 78643K 2 0 counters 45 34K 34K 78643K 101 0 ioctlops 0 0K 4K 78643K 1653 0 iov 0 0K 24K 78643K 770 0 mount 1 1K 1K 78643K 1 0 vnodes 1220 77K 77K 78643K 1761 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 15 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 22 0 dirhash 9 1K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 6 17K 25K 78643K 1201 0 sigio 0 0K 0K 78643K 5 0 proc 61 63K 95K 78643K 625 0 subproc 32 2K 2K 78643K 68 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 84 0 in_multi 58 2K 3K 78643K 191 0 ether_multi 1 0K 0K 78643K 26 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 61 281K 281K 78643K 61 0 exec 0 0K 1K 78643K 318 0 pfkey data 0 0K 1K 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 141 72K 88K 78643K 5130 0 UVM aobj 43 4K 4K 78643K 54 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 157 0 NDP 20 0K 0K 78643K 63 0 temp 166 3873K 3953K 78643K 21691 0 kqueue 3 4K 12K 78643K 80 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 15 0 8 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 83 0 81 1 0 1 1 0 8 0 rtentry 112 105 0 78 3 1 2 2 0 8 0 unpcb 120 727 0 715 1 0 1 1 0 8 0 syncache 264 6 0 6 2 2 0 1 0 8 0 tcpqe 32 293 0 293 1 1 0 1 0 8 0 tcpcb 544 498 0 494 3 2 1 2 0 8 0 inpcb 296 1485 0 1478 7 5 2 3 0 8 1 rttmr 72 5 0 5 3 2 1 1 0 8 1 nd6 48 20 0 19 2 1 1 1 0 8 0 pkpcb 40 6 0 6 2 2 0 1 0 8 0 ppxss 1128 3 0 3 2 2 0 1 0 8 0 pfstscr 40 3 0 3 2 1 1 1 0 8 1 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 10 0 10 2 2 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 30 0 19 3 2 1 2 0 8 0 pftag 88 5 0 4 1 0 1 1 0 8 0 pfqueue 264 1 0 0 1 0 1 1 0 8 0 pfstitem 24 50 0 38 1 0 1 1 0 8 0 pfstkey 112 57 0 45 2 0 2 2 0 8 0 pfstate 328 54 0 43 4 0 4 4 0 8 0 pfsrctr 152 28 0 28 1 1 0 1 0 8 0 pfrule 1360 37 0 26 4 2 2 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 577 0 440 24 10 14 15 0 8 4 art_table 32 579 0 440 3 1 2 2 0 8 0 art_node 16 102 0 79 1 0 1 1 0 8 0 sysvmsgpl 40 19 0 7 1 0 1 1 0 8 0 semupl 112 5 0 5 1 1 0 1 0 8 0 semapl 112 12 0 2 1 0 1 1 0 8 0 shmpl 112 52 0 11 2 0 2 2 0 8 0 dirhash 1024 17 0 10 3 1 2 3 0 8 0 dino2pl 256 3223 0 1824 89 0 89 89 0 8 0 ffsino 272 3223 0 1824 96 1 95 95 0 8 0 nchpl 144 5485 0 3884 60 0 60 60 0 8 0 uvmvnodes 72 3636 0 0 67 0 67 67 0 8 0 vnodes 208 3636 0 0 192 0 192 192 0 8 0 namei 1024 15881 0 15881 3 2 1 1 0 8 1 percpumem 16 61 0 28 1 0 1 1 0 8 0 vcpupl 1984 6 0 0 1 0 1 1 0 8 0 vmpool 560 8 0 2 1 0 1 1 0 8 0 pfiaddrpl 120 14 0 2 1 0 1 1 0 8 0 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 192 16378 0 16378 15 14 1 7 0 8 1 plimitpl 152 82 0 74 1 0 1 1 0 8 0 sigapl 424 1432 0 1378 8 1 7 7 0 8 0 futexpl 56 20517 0 20515 2 1 1 1 0 8 0 knotepl 112 166 0 147 1 0 1 1 0 8 0 kqueuepl 144 187 0 181 1 0 1 1 0 8 0 pipepl 304 227 0 217 5 3 2 2 0 8 1 fdescpl 496 1395 0 1378 3 0 3 3 0 8 0 filepl 152 9097 0 8988 9 4 5 6 0 8 0 lockfpl 104 1354 0 1351 1 0 1 1 0 8 0 lockfspl 48 322 0 320 1 0 1 1 0 8 0 sessionpl 112 20 0 9 1 0 1 1 0 8 0 pgrppl 48 28 0 17 1 0 1 1 0 8 0 ucredpl 96 937 0 928 1 0 1 1 0 8 0 zombiepl 144 1378 0 1378 2 1 1 1 0 8 1 processpl 984 1432 0 1378 8 1 7 7 0 8 0 procpl 624 4226 0 4158 7 1 6 6 0 8 0 srpgc 64 4 0 4 2 2 0 1 0 8 0 sosppl 128 32 0 32 6 5 1 1 0 8 1 sockpl 400 2314 0 2293 11 7 4 5 0 8 1 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 16 0 0 2 0 2 2 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 12 0 0 2 0 2 2 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 167 0 0 20 0 20 20 0 8 0 mtagpl 96 68 0 0 2 0 2 2 0 8 0 mbufpl 256 287 0 0 14 0 14 14 0 8 0 bufpl 280 7483 0 1248 446 0 446 446 0 8 0 anonpl 16 151243 0 133518 111 24 87 87 0 124 14 amapchunkpl 152 10656 0 10480 53 36 17 21 0 158 9 amappl16 192 6545 0 5601 80 23 57 59 0 8 8 amappl15 184 267 0 265 2 1 1 1 0 8 0 amappl14 176 346 0 340 1 0 1 1 0 8 0 amappl13 168 304 0 301 1 0 1 1 0 8 0 amappl12 160 268 0 267 2 1 1 1 0 8 0 amappl11 152 64 0 47 1 0 1 1 0 8 0 amappl10 144 294 0 288 1 0 1 1 0 8 0 amappl9 136 685 0 682 1 0 1 1 0 8 0 amappl8 128 423 0 385 2 0 2 2 0 8 0 amappl7 120 133 0 120 1 0 1 1 0 8 0 amappl6 112 32 0 23 1 0 1 1 0 8 0 amappl5 104 1298 0 1280 1 0 1 1 0 8 0 amappl4 96 522 0 495 1 0 1 1 0 8 0 amappl3 88 470 0 465 1 0 1 1 0 8 0 amappl2 80 10659 0 10577 2 0 2 2 0 8 0 amappl1 72 40825 0 40348 23 13 10 18 0 8 0 amappl 80 4522 0 4466 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 53 0 11 1 0 1 1 0 8 0 uaddrrnd 24 1403 0 1380 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1403 0 1380 1 0 1 1 0 8 0 vmmpekpl 168 14763 0 14724 3 0 3 3 0 8 0 vmmpepl 168 178075 0 175832 165 62 103 125 0 357 5 vmsppl 368 1402 0 1380 3 0 3 3 0 8 0 pdppl 4096 2813 0 2766 8 2 6 7 0 8 0 pvpl 32 439154 0 418135 241 40 201 201 0 265 31 pmappl 232 1402 0 1380 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 296 0 30 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace _bpf_mtap(ffff800000adb980,fffffd806d528d00,fffffd806d528d00,2) at _bpf_mtap+0x68 sys/net/bpf.c:1281 tun_dev_read(5d01,ffff800023fb1998,10) at tun_dev_read+0x113 spec_read(ffff800023fb17e0) at spec_read+0xf1 sys/kern/spec_vnops.c:222 VOP_READ(fffffd8065403b80,ffff800023fb1998,10,fffffd807f7bfa20) at VOP_READ+0xbf sys/kern/vfs_vops.c:247 vn_read(fffffd80665fcdc8,ffff800023fb1998,0) at vn_read+0x124 sys/kern/vfs_vnops.c:375 dofilereadv(ffff8000230f89f0,f0,ffff800023fb1998,0,ffff800023fb1a80) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff8000230f89f0,ffff800023fb1a30,ffff800023fb1a80) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800023fb1b00) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023fb1b00) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa6c1c9249d0, 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(ffffffff828b0e50,ffffffff828b0e50) at __sanitizer_cov_trace_cmp4+0xc sys/dev/kcov.c:134 uvm_map_inentry(ffff8000230f9140,ffff8000230f91b8,b2b6c686a1a,ffffffff8241a5e2,ffffffff812e4aa0,22) at uvm_map_inentry+0xbe sys/uvm/uvm_map.c:1890 syscall(ffff800021ee15d0) at syscall+0x3dc mi_syscall sys/sys/syscall_mi.h:87 [inline] syscall(ffff800021ee15d0) at syscall+0x3dc sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb2df3051e50, count: -7