uvm_fault(0xffffffff82798bb0, 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(0xffffffff82798bb0, 0xfffffd0000000018, 0, 1) -> e _bpf_mtap(ffff800000af0740,fffffd806f15a900,fffffd806f15a900,2) at _bpf_mtap+0x68 sys/net/bpf.c:1281 end trace frame: 0xffff800023f3d750, count: 0 ddb{0}> trace _bpf_mtap(ffff800000af0740,fffffd806f15a900,fffffd806f15a900,2) at _bpf_mtap+0x68 sys/net/bpf.c:1281 tun_dev_read(5d01,ffff800023f3d9c8,10) at tun_dev_read+0x113 spec_read(ffff800023f3d810) at spec_read+0xf1 sys/kern/spec_vnops.c:222 VOP_READ(fffffd806e2aa4e8,ffff800023f3d9c8,10,fffffd807f7bf900) at VOP_READ+0xbf sys/kern/vfs_vops.c:247 vn_read(fffffd806ca5a140,ffff800023f3d9c8,0) at vn_read+0x124 sys/kern/vfs_vnops.c:375 dofilereadv(ffff800020e329d8,f0,ffff800023f3d9c8,0,ffff800023f3dab0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020e329d8,ffff800023f3da60,ffff800023f3dab0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800023f3db30) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023f3db30) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf3e64f18520, count: -9 ddb{0}> show registers rdi 0xffffffff81da4bc5 _bpf_mtap+0x65 rsi 0x14b rbp 0xffff800023f3d6e0 rbx 0xfffffd0000000000 rdx 0x14c rcx 0xffff800021eee000 rax 0xe r8 0xffffffff8240a83a pp_r600_decoded_lanes+0xa58d r9 0xffff800000aeee64 r10 0xa r11 0xc94e470c7cbc7d3a r12 0xfffffd806f15a900 r13 0xe r14 0x2 r15 0xffff800000af0740 rip 0xffffffff81da4bc8 _bpf_mtap+0x68 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800023f3d640 ss 0x10 _bpf_mtap+0x68: movl 0x18(%rbx),%r13d ddb{0}> show proc PROC (syz-executor.1) pid=411784 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=77, nice=20 forw=0xffffffffffffffff, list=0xffff800020e32288,0xffffffff8290d2f8 process=0xffff800020e19358 user=0xffff800023f38000, vmspace=0xfffffd807afb5d08 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 28195 389168 11104 0 2 0 syz-executor.1 *28195 411784 11104 0 7 0x4000000 syz-executor.1 54929 492247 0 0 3 0x14200 acct acct 52202 304928 1 0 3 0x100083 ttyin getty 17257 108008 0 0 3 0x14200 bored sosplice 11104 342108 60814 0 3 0x82 nanosleep syz-executor.1 70909 93398 60814 0 3 0x82 piperd syz-executor.0 60814 97448 75992 0 3 0x82 thrsleep syz-fuzzer 60814 254462 75992 0 3 0x4000082 nanosleep syz-fuzzer 60814 358992 75992 0 3 0x4000082 thrsleep syz-fuzzer 60814 145225 75992 0 7 0x4000002 syz-fuzzer 60814 205277 75992 0 3 0x4000082 thrsleep syz-fuzzer 60814 281095 75992 0 3 0x4000082 thrsleep syz-fuzzer 60814 132915 75992 0 3 0x4000082 thrsleep syz-fuzzer 60814 296567 75992 0 3 0x4000082 thrsleep syz-fuzzer 60814 142435 75992 0 3 0x4000082 kqread syz-fuzzer 60814 506929 75992 0 3 0x4000082 thrsleep syz-fuzzer 75992 351427 24433 0 3 0x10008a pause ksh 24433 85156 64532 0 3 0x92 select sshd 64532 72586 1 0 3 0x80 select sshd 98999 192375 75669 74 3 0x100092 bpf pflogd 75669 311198 1 0 3 0x80 netio pflogd 77055 238703 88203 73 3 0x100090 kqread syslogd 88203 240493 1 0 3 0x100082 netio syslogd 95767 188730 1 77 3 0x100090 poll dhclient 18721 442718 1 0 3 0x80 poll dhclient 34882 381279 0 0 3 0x14200 bored smr 36203 69383 0 0 2 0x14200 zerothread 91121 125459 0 0 3 0x14200 aiodoned aiodoned 47156 386619 0 0 3 0x14200 syncer update 35512 259136 0 0 3 0x14200 cleaner cleaner 85723 22766 0 0 3 0x14200 reaper reaper 94866 424440 0 0 3 0x14200 pgdaemon pagedaemon 35118 437327 0 0 3 0x14200 bored crynlk 64136 408265 0 0 3 0x14200 bored crypto 60931 183306 0 0 3 0x40014200 acpi0 acpi0 90355 472997 0 0 3 0x40014200 idle1 98896 202131 0 0 3 0x14200 bored softnet 50966 500220 0 0 3 0x14200 bored systqmp 93054 521977 0 0 3 0x14200 bored systq 31352 8265 0 0 3 0x40014200 bored softclock 97935 314526 0 0 3 0x40014200 idle0 1 388896 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 28195 (syz-executor.1) thread 0xffff800020e329d8 (411784) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff828b6e58) #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 9559 6748K 7382K 78643K 13039 0 pcb 13 8K 8K 78643K 126 0 rtable 124 15K 17K 78643K 483 0 ifaddr 104 20K 20K 78643K 188 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 65 0 ioctlops 0 0K 4K 78643K 1572 0 iov 0 0K 16K 78643K 116 0 mount 1 1K 1K 78643K 1 0 vnodes 1224 77K 77K 78643K 1912 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 8 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 306 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 759 0 sigio 0 0K 0K 78643K 5 0 proc 62 63K 95K 78643K 551 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 66 0 in_multi 97 4K 4K 78643K 159 0 ether_multi 1 0K 0K 78643K 13 0 mrt 1 0K 0K 78643K 15 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 277 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 140 104K 118K 78643K 3341 0 UVM aobj 17 2K 2K 78643K 17 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 113 0 NDP 16 0K 0K 78643K 36 0 temp 135 3858K 3926K 78643K 9734 0 kqueue 3 4K 12K 78643K 59 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 8 0 1 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 55 0 53 1 0 1 1 0 8 0 rtentry 112 82 0 39 2 0 2 2 0 8 0 unpcb 120 286 0 276 1 0 1 1 0 8 0 syncache 264 9 0 9 3 3 0 1 0 8 0 tcpqe 32 90 0 90 1 1 0 1 0 8 0 tcpcb 544 470 0 466 1 0 1 1 0 8 0 inpcb 280 986 0 978 5 3 2 2 0 8 1 rttmr 72 3 0 3 2 2 0 1 0 8 0 nd6 48 16 0 11 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 swfcl 56 2 0 0 1 0 1 1 0 8 0 ppxss 1128 2 0 2 2 1 1 1 0 8 1 pffrag 232 4 0 4 3 3 0 1 0 482 0 pffrnode 88 4 0 4 3 3 0 1 0 8 0 pffrent 40 95 0 95 3 3 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 31 0 25 1 0 1 1 0 8 0 pfstitem 24 27 0 24 1 0 1 1 0 8 0 pfstkey 112 27 0 24 1 0 1 1 0 8 0 pfstate 328 27 0 24 3 1 2 3 0 8 0 pfrule 1360 34 0 21 4 2 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 422 0 198 18 4 14 14 0 8 0 art_table 32 423 0 198 2 0 2 2 0 8 0 art_node 16 79 0 39 1 0 1 1 0 8 0 sysvmsgpl 40 30 0 16 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 304 0 294 1 0 1 1 0 8 0 shmpl 112 15 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2545 0 1141 89 0 89 89 0 8 0 ffsino 272 2545 0 1141 95 0 95 95 0 8 0 nchpl 144 3987 0 2376 60 0 60 60 0 8 0 uvmvnodes 72 3155 0 0 58 0 58 58 0 8 0 vnodes 208 3155 0 0 167 0 167 167 0 8 0 namei 1024 11456 0 11456 2 1 1 1 0 8 1 percpumem 16 43 0 11 1 0 1 1 0 8 0 vcpupl 1984 10 0 0 2 0 2 2 0 8 0 vmpool 560 19 0 9 1 0 1 1 0 8 0 pfiaddrpl 120 12 0 6 1 0 1 1 0 8 0 scxspl 192 11786 0 11786 11 10 1 7 0 8 1 plimitpl 152 75 0 67 1 0 1 1 0 8 0 sigapl 424 979 0 946 4 0 4 4 0 8 0 futexpl 56 14911 0 14911 2 1 1 1 0 8 1 knotepl 112 120 0 101 1 0 1 1 0 8 0 kqueuepl 144 113 0 111 1 0 1 1 0 8 0 pipelkpl 48 191 0 181 1 0 1 1 0 8 0 pipepl 120 382 0 363 1 0 1 1 0 8 0 fdescpl 496 960 0 944 3 0 3 3 0 8 0 filepl 152 5999 0 5898 5 0 5 5 0 8 0 lockfpl 104 170 0 169 1 0 1 1 0 8 0 lockfspl 48 58 0 57 1 0 1 1 0 8 0 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 23 0 12 1 0 1 1 0 8 0 ucredpl 96 850 0 841 1 0 1 1 0 8 0 zombiepl 144 946 0 946 1 0 1 1 0 8 1 processpl 984 979 0 946 5 0 5 5 0 8 0 procpl 624 2522 0 2479 4 0 4 4 0 8 0 sosppl 128 12 0 12 4 3 1 1 0 8 1 sockpl 400 1332 0 1313 4 1 3 3 0 8 1 mcl64k 65536 11 0 0 2 0 2 2 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 6 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 13 0 0 2 0 2 2 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 170 0 0 21 0 21 21 0 8 1 mtagpl 80 365 0 0 8 0 8 8 0 8 0 mbufpl 256 1210 0 0 74 0 74 74 0 8 0 bufpl 280 5081 0 142 353 0 353 353 0 8 0 anonpl 16 111933 0 95456 93 26 67 82 0 124 0 amapchunkpl 152 6376 0 6213 38 30 8 21 0 158 0 amappl16 192 5377 0 4484 79 34 45 55 0 8 0 amappl15 184 9 0 8 2 1 1 1 0 8 0 amappl14 176 24 0 20 1 0 1 1 0 8 0 amappl13 168 28 0 25 1 0 1 1 0 8 0 amappl12 160 199 0 198 1 0 1 1 0 8 0 amappl11 152 64 0 47 1 0 1 1 0 8 0 amappl10 144 21 0 14 1 0 1 1 0 8 0 amappl9 136 920 0 916 1 0 1 1 0 8 0 amappl8 128 874 0 845 1 0 1 1 0 8 0 amappl7 120 120 0 108 1 0 1 1 0 8 0 amappl6 112 23 0 21 1 0 1 1 0 8 0 amappl5 104 1057 0 1039 1 0 1 1 0 8 0 amappl4 96 507 0 475 1 0 1 1 0 8 0 amappl3 88 125 0 120 1 0 1 1 0 8 0 amappl2 80 6725 0 6649 2 0 2 2 0 8 0 amappl1 72 29361 0 28918 23 13 10 18 0 8 0 amappl 80 2786 0 2734 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 16 0 0 1 0 1 1 0 8 0 uaddrrnd 24 979 0 953 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 979 0 953 1 0 1 1 0 8 0 vmmpekpl 168 11727 0 11689 2 0 2 2 0 8 0 vmmpepl 168 122502 0 120438 125 32 93 113 0 357 0 vmsppl 368 978 0 953 4 1 3 3 0 8 0 pdppl 4096 1965 0 1916 8 1 7 7 0 8 0 pvpl 32 324170 0 304518 208 41 167 196 0 265 6 pmappl 232 978 0 953 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 336 0 12 10 0 10 10 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace _bpf_mtap(ffff800000af0740,fffffd806f15a900,fffffd806f15a900,2) at _bpf_mtap+0x68 sys/net/bpf.c:1281 tun_dev_read(5d01,ffff800023f3d9c8,10) at tun_dev_read+0x113 spec_read(ffff800023f3d810) at spec_read+0xf1 sys/kern/spec_vnops.c:222 VOP_READ(fffffd806e2aa4e8,ffff800023f3d9c8,10,fffffd807f7bf900) at VOP_READ+0xbf sys/kern/vfs_vops.c:247 vn_read(fffffd806ca5a140,ffff800023f3d9c8,0) at vn_read+0x124 sys/kern/vfs_vnops.c:375 dofilereadv(ffff800020e329d8,f0,ffff800023f3d9c8,0,ffff800023f3dab0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020e329d8,ffff800023f3da60,ffff800023f3dab0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800023f3db30) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023f3db30) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf3e64f18520, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d80ff0) 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: 0xc002804668, count: -3