uvm_fault(0xffffffff827b1ca0, 0xfffffd0000000018, 0, 1) -> e kernel: page fault trap, code=0 Stopped at _bpf_mtap+0x68: movl 0x18(%rbx),%r13d ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xffffffff827b1ca0, 0xfffffd0000000018, 0, 1) -> e _bpf_mtap(ffff800000aeb440,fffffd8064ab2d00,fffffd8064ab2d00,2) at _bpf_mtap+0x68 sys/net/bpf.c:1281 end trace frame: 0xffff800023f27150, count: 0 ddb{1}> trace _bpf_mtap(ffff800000aeb440,fffffd8064ab2d00,fffffd8064ab2d00,2) at _bpf_mtap+0x68 sys/net/bpf.c:1281 tun_dev_read(5d01,ffff800023f273c8,10) at tun_dev_read+0x113 spec_read(ffff800023f27210) at spec_read+0xf1 sys/kern/spec_vnops.c:222 VOP_READ(fffffd806e2dd5b8,ffff800023f273c8,10,fffffd807f7bfa20) at VOP_READ+0xbf sys/kern/vfs_vops.c:247 vn_read(fffffd8067df9d30,ffff800023f273c8,0) at vn_read+0x124 sys/kern/vfs_vnops.c:375 dofilereadv(ffff800020e09878,f0,ffff800023f273c8,0,ffff800023f274b0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020e09878,ffff800023f27460,ffff800023f274b0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800023f27530) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023f27530) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf0d0f7484f0, count: -9 ddb{1}> show registers rdi 0xffffffff81ee49c5 _bpf_mtap+0x65 rsi 0x14b rbp 0xffff800023f270e0 rbx 0xfffffd0000000000 rdx 0x14c rcx 0xffff800023106000 rax 0xe r8 0xffffffff82426088 pp_r600_decoded_lanes+0x73b5 r9 0xffff800000af6664 r10 0xa r11 0x1faf84a487c929fd r12 0xfffffd8064ab2d00 r13 0xe r14 0x2 r15 0xffff800000aeb440 rip 0xffffffff81ee49c8 _bpf_mtap+0x68 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800023f27040 ss 0x10 _bpf_mtap+0x68: movl 0x18(%rbx),%r13d ddb{1}> show proc PROC (syz-executor.1) pid=486069 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020e089d8,0xffff800020e09618 process=0xffff800020e04038 user=0xffff800023f22000, vmspace=0xfffffd807e8f65d0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 80342 304609 73424 0 2 0 syz-executor.1 *80342 486069 73424 0 7 0x4000000 syz-executor.1 34945 341540 1714 0 7 0 syz-executor.0 34945 20898 1714 0 3 0x4000000 biowait syz-executor.0 34945 241575 1714 0 3 0x4000080 fsleep syz-executor.0 28450 445469 0 0 3 0x14280 nfsidl nfsio 36934 403264 0 0 3 0x14280 nfsidl nfsio 59331 390432 0 0 3 0x14280 nfsidl nfsio 7617 293238 0 0 3 0x14280 nfsidl nfsio 72010 188364 0 0 3 0x14280 nfsidl nfsio 68948 113451 0 0 3 0x14280 nfsidl nfsio 84854 115062 0 0 3 0x14280 nfsidl nfsio 26117 327196 0 0 3 0x14280 nfsidl nfsio 94193 26473 0 0 3 0x14280 nfsidl nfsio 58873 189132 0 0 3 0x14280 nfsidl nfsio 18982 349120 0 0 3 0x14280 nfsidl nfsio 9783 435075 0 0 3 0x14280 nfsidl nfsio 92589 467148 0 0 3 0x14280 nfsidl nfsio 72389 290437 0 0 3 0x14280 nfsidl nfsio 20283 426700 0 0 3 0x14280 nfsidl nfsio 80030 30138 0 0 3 0x14280 nfsidl nfsio 13428 187437 0 0 3 0x14280 nfsidl nfsio 35502 201427 0 0 3 0x14280 nfsidl nfsio 96913 53198 0 0 3 0x14280 nfsidl nfsio 31443 453286 0 0 3 0x14280 nfsidl nfsio 93079 119973 0 0 3 0x14200 bored sosplice 73424 229297 82832 0 3 0x82 nanosleep syz-executor.1 1714 105597 82832 0 3 0x82 nanosleep syz-executor.0 82832 402300 82747 0 3 0x82 thrsleep syz-fuzzer 82832 165030 82747 0 3 0x4000082 thrsleep syz-fuzzer 82832 417857 82747 0 3 0x4000082 thrsleep syz-fuzzer 82832 181379 82747 0 3 0x4000082 thrsleep syz-fuzzer 82832 421401 82747 0 3 0x4000082 kqread syz-fuzzer 82832 477731 82747 0 3 0x4000082 thrsleep syz-fuzzer 82832 421056 82747 0 3 0x4000082 thrsleep syz-fuzzer 82832 301600 82747 0 3 0x4000082 thrsleep syz-fuzzer 82832 445317 82747 0 3 0x4000082 thrsleep syz-fuzzer 82832 329195 82747 0 3 0x4000082 thrsleep syz-fuzzer 82747 149245 33997 0 3 0x10008a pause ksh 33997 336895 2627 0 3 0x92 select sshd 38552 442686 1 0 3 0x100083 ttyin getty 2627 8221 1 0 3 0x80 select sshd 37401 165712 58495 74 3 0x100092 bpf pflogd 58495 70383 1 0 3 0x80 netio pflogd 32430 195319 27029 73 3 0x100090 kqread syslogd 27029 72696 1 0 3 0x100082 netio syslogd 6674 261108 1 77 3 0x100090 poll dhclient 91394 131187 1 0 3 0x80 poll dhclient 45067 76436 0 0 3 0x14200 bored smr 8663 274616 0 0 2 0x14200 zerothread 28497 197667 0 0 3 0x14200 aiodoned aiodoned 21461 449170 0 0 3 0x14200 syncer update 6286 97164 0 0 3 0x14200 cleaner cleaner 30007 430721 0 0 3 0x14200 reaper reaper 83858 482646 0 0 3 0x14200 pgdaemon pagedaemon 7782 469590 0 0 3 0x14200 bored crynlk 40587 453428 0 0 3 0x14200 bored crypto 96428 301401 0 0 3 0x40014200 acpi0 acpi0 33550 274428 0 0 3 0x40014200 idle1 34927 427272 0 0 3 0x14200 bored softnet 58484 475240 0 0 3 0x14200 bored systqmp 14372 487051 0 0 3 0x14200 bored systq 16321 90186 0 0 3 0x40014200 bored softclock 62535 509855 0 0 3 0x40014200 idle0 1 3508 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 80342 (syz-executor.1) thread 0xffff800020e09878 (486069) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff8292aa38) #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 Process 34945 (syz-executor.0) thread 0xffff800020e09ae8 (20898) exclusive rrwlock inode r = 0 (0xfffffd80686234e0) #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 ufs_ihashins+0x45 sys/ufs/ufs/ufs_ihash.c:140 #4 ffs_vget+0x13e sys/ufs/ffs/ffs_vfsops.c:1358 #5 ffs_inode_alloc+0x1e2 sys/ufs/ffs/ffs_alloc.c:394 #6 ufs_makeinode+0xaa sys/ufs/ufs/ufs_vnops.c:1830 #7 ufs_create+0x41 sys/ufs/ufs/ufs_vnops.c:152 #8 VOP_CREATE+0xc0 sys/kern/vfs_vops.c:112 #9 vn_open+0x2a4 sys/kern/vfs_vnops.c:122 #10 doopenat+0x28b sys/kern/vfs_syscalls.c:1141 #11 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #11 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #12 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8068623f80) #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 vn_open+0x1a6 sys/kern/vfs_vnops.c:113 #8 doopenat+0x28b sys/kern/vfs_syscalls.c:1141 #9 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #9 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #10 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9541 6490K 6817K 78643K 11767 0 pcb 13 8K 8K 78643K 147 0 rtable 99 7K 10K 78643K 633 0 ifaddr 98 19K 20K 78643K 234 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 71 0 ioctlops 0 0K 4K 78643K 1619 0 iov 0 0K 16K 78643K 120 0 mount 1 1K 1K 78643K 1 0 vnodes 1226 77K 78K 78643K 1588 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 10 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 150 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 6 17K 25K 78643K 852 0 sigio 0 0K 0K 78643K 10 0 proc 61 63K 95K 78643K 520 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 83 0 in_multi 78 3K 3K 78643K 207 0 ether_multi 1 0K 0K 78643K 26 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 247 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 88K 104K 78643K 3918 0 UVM aobj 27 6K 6K 78643K 37 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 108 0 NDP 14 0K 0K 78643K 43 0 temp 141 3868K 3936K 78643K 14237 0 kqueue 3 4K 10K 78643K 56 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 13 0 4 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 747 0 745 1 0 1 1 0 8 0 rtentry 112 104 0 73 2 0 2 2 0 8 0 unpcb 120 587 0 577 1 0 1 1 0 8 0 syncache 264 9 0 9 4 4 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 1374 0 1374 3 3 0 2 0 8 0 tcpcb 544 996 0 992 1 0 1 1 0 8 0 inpcb 296 2246 0 2239 2 0 2 2 0 8 1 rttmr 72 1 0 1 1 0 1 1 0 8 1 nd6 48 17 0 15 1 0 1 1 0 8 0 pkpcb 40 28 0 28 4 4 0 1 0 8 0 ppxss 1128 2 0 2 2 2 0 1 0 8 0 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 2 0 1 2 1 1 1 0 482 0 pffrnode 88 2 0 1 2 1 1 1 0 8 0 pffrent 40 47 0 46 2 1 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 pfrktable 1344 65 0 58 3 1 2 2 0 8 1 pftag 88 1 0 0 1 0 1 1 0 8 0 pfqueue 264 1 0 0 1 0 1 1 0 8 0 pfstitem 24 38 0 23 1 0 1 1 0 8 0 pfstkey 112 44 0 29 2 1 1 2 0 8 0 pfstate 328 42 0 27 3 0 3 3 0 8 0 pfrule 1360 46 0 31 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 503 0 342 15 4 11 12 0 8 0 art_table 32 504 0 342 2 0 2 2 0 8 0 art_node 16 101 0 72 1 0 1 1 0 8 0 sysvmsgpl 40 69 0 29 1 0 1 1 0 8 0 semapl 112 142 0 132 1 0 1 1 0 8 0 shmpl 112 35 0 10 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2574 0 1173 90 1 89 89 0 8 0 ffsino 272 2574 0 1173 96 2 94 95 0 8 0 nchpl 144 3952 0 2340 60 0 60 60 0 8 0 uvmvnodes 72 2866 0 0 53 0 53 53 0 8 0 vnodes 208 2866 0 0 151 0 151 151 0 8 0 namei 1024 11015 0 11014 3 2 1 1 0 8 0 percpumem 16 46 0 14 1 0 1 1 0 8 0 vcpupl 1984 8 0 0 1 0 1 1 0 8 0 vmpool 560 12 0 4 1 0 1 1 0 8 0 pfiaddrpl 120 22 0 18 2 1 1 1 0 8 0 scxspl 192 12712 0 12711 13 12 1 7 0 8 0 plimitpl 152 83 0 75 1 0 1 1 0 8 0 sigapl 424 1088 0 1035 6 0 6 6 0 8 0 futexpl 56 14397 0 14396 2 1 1 1 0 8 0 knotepl 112 119 0 100 1 0 1 1 0 8 0 kqueuepl 144 116 0 112 1 0 1 1 0 8 0 pipepl 304 153 0 143 2 1 1 2 0 8 0 fdescpl 496 1052 0 1035 3 0 3 3 0 8 0 filepl 152 7707 0 7605 7 2 5 6 0 8 1 lockfpl 104 213 0 212 1 0 1 1 0 8 0 lockfspl 48 71 0 70 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 35 0 24 1 0 1 1 0 8 0 ucredpl 96 681 0 672 1 0 1 1 0 8 0 zombiepl 144 1035 0 1035 2 1 1 1 0 8 1 processpl 984 1088 0 1035 8 1 7 7 0 8 0 procpl 624 3117 0 3052 6 0 6 6 0 8 1 sosppl 128 15 0 15 2 1 1 1 0 8 1 sockpl 400 3625 0 3606 6 2 4 4 0 8 2 mcl64k 65536 16 0 0 2 0 2 2 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 7 0 0 1 0 1 1 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 12 0 0 2 0 2 2 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 282 0 0 35 0 35 35 0 8 0 mtagpl 96 82 0 0 2 0 2 2 0 8 0 mbufpl 256 473 0 0 27 0 27 27 0 8 0 bufpl 280 6163 0 139 431 0 431 431 0 8 0 anonpl 16 105924 0 89180 86 2 84 84 0 124 14 amapchunkpl 152 7423 0 7253 41 20 21 21 0 158 14 amappl16 192 4995 0 4100 64 11 53 57 0 8 8 amappl15 184 1 0 1 1 1 0 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 160 398 0 394 1 0 1 1 0 8 0 amappl11 152 61 0 45 1 0 1 1 0 8 0 amappl10 144 15 0 11 1 0 1 1 0 8 0 amappl9 136 826 0 822 1 0 1 1 0 8 0 amappl8 128 339 0 312 1 0 1 1 0 8 0 amappl7 120 123 0 111 1 0 1 1 0 8 0 amappl6 112 23 0 19 2 1 1 1 0 8 0 amappl5 104 1340 0 1322 1 0 1 1 0 8 0 amappl4 96 499 0 470 1 0 1 1 0 8 0 amappl3 88 133 0 128 1 0 1 1 0 8 0 amappl2 80 7483 0 7406 2 0 2 2 0 8 0 amappl1 72 33090 0 32621 23 13 10 18 0 8 0 amappl 80 3364 0 3310 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 36 0 10 1 0 1 1 0 8 0 uaddrrnd 24 1064 0 1039 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1064 0 1039 1 0 1 1 0 8 0 vmmpekpl 168 12127 0 12091 2 0 2 2 0 8 0 vmmpepl 168 135641 0 133470 126 25 101 110 0 357 6 vmsppl 368 1063 0 1039 3 0 3 3 0 8 0 pdppl 4096 2135 0 2086 9 2 7 7 0 8 0 pvpl 32 329726 0 309664 204 6 198 198 0 265 35 pmappl 232 1063 0 1039 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 307 0 16 9 0 9 9 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82751ff0) 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(ffffffff8292a830) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff8292a830) at __mp_lock+0x127 sys/kern/kern_lock.c:147 intr_handler(ffff800020ecf540,ffff80000004a400) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge17_untramp() at Xintr_ioapic_edge17_untramp+0x19f copyout() at copyout+0x49 syscall(ffff800020ecf740) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020ecf740) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff4ff0, count: -9 ddb{0}> machine ddbcpu 1 Stopped at _bpf_mtap+0x68: movl 0x18(%rbx),%r13d ddb{1}> trace _bpf_mtap(ffff800000aeb440,fffffd8064ab2d00,fffffd8064ab2d00,2) at _bpf_mtap+0x68 sys/net/bpf.c:1281 tun_dev_read(5d01,ffff800023f273c8,10) at tun_dev_read+0x113 spec_read(ffff800023f27210) at spec_read+0xf1 sys/kern/spec_vnops.c:222 VOP_READ(fffffd806e2dd5b8,ffff800023f273c8,10,fffffd807f7bfa20) at VOP_READ+0xbf sys/kern/vfs_vops.c:247 vn_read(fffffd8067df9d30,ffff800023f273c8,0) at vn_read+0x124 sys/kern/vfs_vnops.c:375 dofilereadv(ffff800020e09878,f0,ffff800023f273c8,0,ffff800023f274b0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020e09878,ffff800023f27460,ffff800023f274b0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800023f27530) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023f27530) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf0d0f7484f0, count: -9