login: uvm_fault(0xffffffff8288d220, 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(0xffffffff8288d220, 0xfffffd0000000018, 0, 1) -> e _bpf_mtap(ffff800000aef4c0,fffffd806d54eb00,fffffd806d54eb00,2) at _bpf_mtap+0x68 sys/net/bpf.c:1281 end trace frame: 0xffff800021f0f1a0, count: 0 ddb{0}> trace _bpf_mtap(ffff800000aef4c0,fffffd806d54eb00,fffffd806d54eb00,2) at _bpf_mtap+0x68 sys/net/bpf.c:1281 tun_dev_read(5d01,ffff800021f0f418,10) at tun_dev_read+0x113 spec_read(ffff800021f0f260) at spec_read+0xf1 sys/kern/spec_vnops.c:222 VOP_READ(fffffd806e2d5008,ffff800021f0f418,10,fffffd807f7bf9c0) at VOP_READ+0xbf sys/kern/vfs_vops.c:247 vn_read(fffffd80677f0d28,ffff800021f0f418,0) at vn_read+0x124 sys/kern/vfs_vnops.c:375 dofilereadv(ffff800020e22288,f0,ffff800021f0f418,0,ffff800021f0f500) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020e22288,ffff800021f0f4b0,ffff800021f0f500) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800021f0f580) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021f0f580) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x275892ae570, count: -9 ddb{0}> show registers rdi 0xffffffff8234fa15 _bpf_mtap+0x65 rsi 0x14b rbp 0xffff800021f0f130 rbx 0xfffffd0000000000 rdx 0x14c rcx 0xffff80002350a000 rax 0xe r8 0xffffffff8240a9b3 pp_r600_decoded_lanes+0x46f8 r9 0xffff800000af4664 r10 0xa r11 0x81cc73e815e5ef65 r12 0xfffffd806d54eb00 r13 0xe r14 0x2 r15 0xffff800000aef4c0 rip 0xffffffff8234fa18 _bpf_mtap+0x68 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021f0f090 ss 0x10 _bpf_mtap+0x68: movl 0x18(%rbx),%r13d ddb{0}> show proc PROC (syz-executor.1) pid=319359 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020e229d8,0xffff800020e22778 process=0xffff800020e087d0 user=0xffff800021f0a000, vmspace=0xfffffd807efff8a0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 60269 389221 39413 0 2 0 syz-executor.0 36236 229610 28449 0 2 0 syz-executor.1 36236 283909 28449 0 3 0x4000080 fsleep syz-executor.1 36236 363559 28449 0 3 0x4000080 fsleep syz-executor.1 *36236 319359 28449 0 7 0x4000000 syz-executor.1 4557 306820 0 0 3 0x14200 acct acct 69293 138990 0 0 3 0x14200 bored sosplice 28449 84899 41922 0 2 0x482 syz-executor.1 39413 156328 41922 0 7 0x2 syz-executor.0 41922 188374 28259 0 3 0x82 thrsleep syz-fuzzer 41922 315567 28259 0 3 0x4000082 thrsleep syz-fuzzer 41922 274704 28259 0 3 0x4000082 thrsleep syz-fuzzer 41922 167362 28259 0 3 0x4000082 thrsleep syz-fuzzer 41922 455965 28259 0 3 0x4000082 thrsleep syz-fuzzer 41922 112762 28259 0 3 0x4000082 thrsleep syz-fuzzer 41922 496634 28259 0 3 0x4000082 thrsleep syz-fuzzer 41922 122559 28259 0 3 0x4000082 kqread syz-fuzzer 41922 332291 28259 0 3 0x4000082 thrsleep syz-fuzzer 41922 185306 28259 0 3 0x4000082 thrsleep syz-fuzzer 28259 490180 37938 0 3 0x10008a pause ksh 37938 305432 4197 0 3 0x92 select sshd 70896 78641 1 0 3 0x100083 ttyin getty 4197 91294 1 0 3 0x80 select sshd 13179 494270 44365 74 3 0x100092 bpf pflogd 44365 476682 1 0 3 0x80 netio pflogd 19816 31011 20393 73 3 0x100090 kqread syslogd 20393 14180 1 0 3 0x100082 netio syslogd 80591 498294 1 77 3 0x100090 poll dhclient 26225 420135 1 0 3 0x80 poll dhclient 73208 263292 0 0 3 0x14200 bored smr 26071 48664 0 0 2 0x14200 zerothread 95407 267700 0 0 3 0x14200 aiodoned aiodoned 88848 80057 0 0 3 0x14200 syncer update 98064 494652 0 0 3 0x14200 cleaner cleaner 22284 431203 0 0 3 0x14200 reaper reaper 28017 334706 0 0 3 0x14200 pgdaemon pagedaemon 4850 440853 0 0 3 0x14200 bored crynlk 20084 470682 0 0 3 0x14200 bored crypto 7595 444148 0 0 3 0x40014200 acpi0 acpi0 22014 456736 0 0 3 0x40014200 idle1 92460 8579 0 0 3 0x14200 bored softnet 40803 59202 0 0 3 0x14200 bored systqmp 7209 281976 0 0 3 0x14200 bored systq 37797 461035 0 0 3 0x40014200 bored softclock 97969 262048 0 0 3 0x40014200 idle0 1 322682 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 36236 (syz-executor.1) thread 0xffff800020e22288 (319359) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff8289dd48) #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 9512 6671K 7317K 78643K 11159 0 pcb 13 8K 8K 78643K 47 0 rtable 116 4K 5K 78643K 275 0 ifaddr 60 13K 13K 78643K 84 0 counters 43 33K 34K 78643K 49 0 ioctlops 0 0K 4K 78643K 1489 0 iov 0 0K 12K 78643K 90 0 mount 1 1K 1K 78643K 1 0 vnodes 1224 77K 77K 78643K 1358 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 4 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 36 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 6 17K 25K 78643K 179 0 sigio 0 0K 0K 78643K 6 0 proc 61 63K 95K 78643K 445 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 5 0 in_multi 53 3K 3K 78643K 65 0 ether_multi 1 0K 0K 78643K 3 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 212 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 122 39K 39K 78643K 1476 0 UVM aobj 12 2K 2K 78643K 12 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 7 0 NDP 8 0K 0K 78643K 16 0 temp 85 3852K 3916K 78643K 3361 0 kqueue 3 4K 8K 78643K 9 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 10 0 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 27 0 25 1 0 1 1 0 8 0 rtentry 112 55 0 8 2 0 2 2 0 8 0 unpcb 120 55 0 45 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 13 0 13 1 1 0 1 0 8 0 tcpcb 544 70 0 66 1 0 1 1 0 8 0 inpcb 296 167 0 159 2 0 2 2 0 8 1 rttmr 72 1 0 1 1 0 1 1 0 8 1 nd6 48 8 0 1 1 0 1 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 pfrktable 1344 8 0 6 1 0 1 1 0 8 0 pfstitem 24 18 0 0 1 0 1 1 0 8 0 pfstkey 112 18 0 0 1 0 1 1 0 8 0 pfstate 328 18 0 0 2 0 2 2 0 8 0 pfrule 1360 27 0 18 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 210 0 3 13 0 13 13 0 8 0 art_table 32 211 0 3 2 0 2 2 0 8 0 art_node 16 54 0 11 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 0 1 0 1 1 0 8 0 semapl 112 34 0 24 1 0 1 1 0 8 0 shmpl 112 10 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1623 0 217 89 0 89 89 0 8 0 ffsino 272 1623 0 217 95 0 95 95 0 8 0 nchpl 144 2074 0 466 60 0 60 60 0 8 0 uvmvnodes 72 1787 0 0 33 0 33 33 0 8 0 vnodes 208 1787 0 0 95 0 95 95 0 8 0 namei 1024 5532 0 5532 1 0 1 1 0 8 1 percpumem 16 35 0 3 1 0 1 1 0 8 0 vcpupl 1984 1 0 0 1 0 1 1 0 8 0 vmpool 560 1 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 4 0 2 1 0 1 1 0 8 0 scxspl 192 5748 0 5748 2 1 1 2 0 8 1 plimitpl 152 21 0 13 1 0 1 1 0 8 0 sigapl 424 396 0 362 4 0 4 4 0 8 0 futexpl 56 2111 0 2109 1 0 1 1 0 8 0 knotepl 112 69 0 50 1 0 1 1 0 8 0 kqueuepl 144 17 0 15 1 0 1 1 0 8 0 pipelkpl 48 147 0 137 1 0 1 1 0 8 0 pipepl 120 294 0 275 1 0 1 1 0 8 0 fdescpl 496 379 0 362 3 0 3 3 0 8 0 filepl 152 2041 0 1939 5 0 5 5 0 8 1 lockfpl 104 59 0 58 1 0 1 1 0 8 0 lockfspl 48 18 0 17 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 20 0 9 1 0 1 1 0 8 0 ucredpl 96 167 0 158 1 0 1 1 0 8 0 zombiepl 144 362 0 362 1 0 1 1 0 8 1 processpl 984 396 0 362 5 0 5 5 0 8 0 procpl 624 709 0 663 4 0 4 4 0 8 0 sosppl 128 2 0 2 1 0 1 1 0 8 1 sockpl 400 249 0 230 3 0 3 3 0 8 1 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 1 0 0 1 0 1 1 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 164 0 0 20 0 20 20 0 8 0 mtagpl 96 96 0 0 3 0 3 3 0 8 0 mbufpl 256 284 0 0 18 0 18 18 0 8 0 bufpl 280 3545 0 133 244 0 244 244 0 8 0 anonpl 16 46759 0 31633 62 1 61 61 0 124 0 amapchunkpl 152 1856 0 1719 8 0 8 8 0 158 1 amappl16 192 1400 0 585 41 0 41 41 0 8 0 amappl15 184 79 0 75 1 0 1 1 0 8 0 amappl14 176 98 0 91 1 0 1 1 0 8 0 amappl13 168 28 0 25 1 0 1 1 0 8 0 amappl12 160 76 0 74 2 1 1 1 0 8 0 amappl11 152 131 0 114 1 0 1 1 0 8 0 amappl10 144 24 0 20 1 0 1 1 0 8 0 amappl9 136 386 0 385 1 0 1 1 0 8 0 amappl8 128 342 0 312 2 0 2 2 0 8 0 amappl7 120 119 0 108 1 0 1 1 0 8 0 amappl6 112 100 0 94 1 0 1 1 0 8 0 amappl5 104 221 0 204 1 0 1 1 0 8 0 amappl4 96 560 0 530 1 0 1 1 0 8 0 amappl3 88 106 0 100 1 0 1 1 0 8 0 amappl2 80 2105 0 2032 2 0 2 2 0 8 0 amappl1 72 18097 0 17643 23 9 14 18 0 8 4 amappl 80 962 0 914 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 11 0 0 1 0 1 1 0 8 0 uaddrrnd 24 380 0 362 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 380 0 362 1 0 1 1 0 8 0 vmmpekpl 168 6910 0 6871 2 0 2 2 0 8 0 vmmpepl 168 52062 0 50012 109 3 106 106 0 357 16 vmsppl 368 379 0 362 2 0 2 2 0 8 0 pdppl 4096 767 0 725 6 0 6 6 0 8 0 pvpl 32 161709 0 143409 153 0 153 153 0 265 3 pmappl 232 379 0 362 2 0 2 2 0 8 1 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 263 0 3 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace _bpf_mtap(ffff800000aef4c0,fffffd806d54eb00,fffffd806d54eb00,2) at _bpf_mtap+0x68 sys/net/bpf.c:1281 tun_dev_read(5d01,ffff800021f0f418,10) at tun_dev_read+0x113 spec_read(ffff800021f0f260) at spec_read+0xf1 sys/kern/spec_vnops.c:222 VOP_READ(fffffd806e2d5008,ffff800021f0f418,10,fffffd807f7bf9c0) at VOP_READ+0xbf sys/kern/vfs_vops.c:247 vn_read(fffffd80677f0d28,ffff800021f0f418,0) at vn_read+0x124 sys/kern/vfs_vnops.c:375 dofilereadv(ffff800020e22288,f0,ffff800021f0f418,0,ffff800021f0f500) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020e22288,ffff800021f0f4b0,ffff800021f0f500) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800021f0f580) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021f0f580) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x275892ae570, 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 __mp_lock(ffffffff8289db40) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff8289db40) at __mp_lock+0x127 sys/kern/kern_lock.c:147 sleep_setup(ffff800020eeb340,ffffffff8279a14c,120,ffffffff823d9012) at sleep_setup+0xcf sys/kern/kern_synch.c:373 tsleep(ffffffff8279a14c,120,ffffffff823d9012,2) at tsleep+0xe6 sleep_setup_timeout sys/kern/kern_synch.c:435 [inline] tsleep(ffffffff8279a14c,120,ffffffff823d9012,2) at tsleep+0xe6 sys/kern/kern_synch.c:151 sys_nanosleep(ffff800020dddd48,ffff800020eeb470,ffff800020eeb4c0) at sys_nanosleep+0x205 sys/kern/kern_time.c:297 syscall(ffff800020eeb540) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020eeb540) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe0af0, count: -9