uvm_fault(0xffffffff828abf60, 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(0xffffffff828abf60, 0xfffffd0000000018, 0, 1) -> e _bpf_mtap(ffff800000aa4fc0,fffffd806a832800,fffffd806a832800,2) at _bpf_mtap+0x68 sys/net/bpf.c:1281 end trace frame: 0xffff8000227a1840, count: 0 ddb{1}> trace _bpf_mtap(ffff800000aa4fc0,fffffd806a832800,fffffd806a832800,2) at _bpf_mtap+0x68 sys/net/bpf.c:1281 tun_dev_read(5d00,ffff8000227a1ab8,10) at tun_dev_read+0x113 spec_read(ffff8000227a1900) at spec_read+0xf1 sys/kern/spec_vnops.c:222 VOP_READ(fffffd807eaa3278,ffff8000227a1ab8,10,fffffd807f7bfa20) at VOP_READ+0xbf sys/kern/vfs_vops.c:247 vn_read(fffffd8068338bf8,ffff8000227a1ab8,0) at vn_read+0x124 sys/kern/vfs_vnops.c:375 dofilereadv(ffff800020e23128,f0,ffff8000227a1ab8,0,ffff8000227a1ba0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020e23128,ffff8000227a1b50,ffff8000227a1ba0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff8000227a1c20) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000227a1c20) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc0eb00c9760, count: -9 ddb{1}> show registers rdi 0xffffffff8128b895 _bpf_mtap+0x65 rsi 0x14c rbp 0xffff8000227a17d0 rbx 0xfffffd0000000000 rdx 0x14d rcx 0xffff800021908000 rax 0xe r8 0xffffffff8241d76e pp_r600_decoded_lanes+0x5d7a r9 0xffff800000ac6664 r10 0xa r11 0x50d5713243215bd1 r12 0xfffffd806a832800 r13 0xe r14 0x2 r15 0xffff800000aa4fc0 rip 0xffffffff8128b898 _bpf_mtap+0x68 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000227a1730 ss 0x10 _bpf_mtap+0x68: movl 0x18(%rbx),%r13d ddb{1}> show proc PROC (syz-executor.0) pid=362337 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=71, nice=20 forw=0xffffffffffffffff, list=0xffff800020ec73a0,0xffff800020f00c68 process=0xffff800020ef27e0 user=0xffff80002279c000, vmspace=0xfffffd807efffcf0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 25994 47556 92313 0 2 0 syz-executor.0 *25994 362337 92313 0 7 0x4000000 syz-executor.0 25994 317600 92313 0 3 0x4000080 fsleep syz-executor.0 186 431354 0 0 3 0x14280 nfsidl nfsio 1429 318578 0 0 3 0x14280 nfsidl nfsio 7642 305963 0 0 3 0x14280 nfsidl nfsio 11525 109913 0 0 3 0x14280 nfsidl nfsio 76761 328803 0 0 3 0x14280 nfsidl nfsio 60367 200476 0 0 3 0x14280 nfsidl nfsio 14241 198326 0 0 3 0x14280 nfsidl nfsio 99826 215419 0 0 3 0x14280 nfsidl nfsio 38421 172157 0 0 3 0x14280 nfsidl nfsio 22028 441657 0 0 3 0x14280 nfsidl nfsio 60874 108993 0 0 3 0x14280 nfsidl nfsio 16327 421757 0 0 3 0x14280 nfsidl nfsio 86771 36318 0 0 3 0x14280 nfsidl nfsio 15725 227558 0 0 3 0x14280 nfsidl nfsio 61524 348510 0 0 3 0x14280 nfsidl nfsio 1542 24166 0 0 3 0x14280 nfsidl nfsio 11654 42664 0 0 3 0x14280 nfsidl nfsio 28926 273023 0 0 3 0x14280 nfsidl nfsio 40892 131324 0 0 3 0x14280 nfsidl nfsio 87484 385374 0 0 3 0x14280 nfsidl nfsio 75464 382983 93155 0 3 0x82 nanosleep syz-executor.1 91355 82601 0 0 3 0x14200 bored sosplice 92313 242340 93155 0 3 0x82 nanosleep syz-executor.0 93155 385427 29709 0 3 0x82 thrsleep syz-fuzzer 93155 426727 29709 0 3 0x4000082 thrsleep syz-fuzzer 93155 240252 29709 0 3 0x4000082 thrsleep syz-fuzzer 93155 170092 29709 0 3 0x4000082 thrsleep syz-fuzzer 93155 857 29709 0 3 0x4000082 thrsleep syz-fuzzer 93155 425775 29709 0 3 0x4000082 kqread syz-fuzzer 93155 111821 29709 0 3 0x4000082 thrsleep syz-fuzzer 93155 221553 29709 0 3 0x4000082 thrsleep syz-fuzzer 93155 394958 29709 0 3 0x4000082 thrsleep syz-fuzzer 93155 248956 29709 0 3 0x4000082 thrsleep syz-fuzzer 29709 236167 10503 0 3 0x10008a pause ksh 10503 2290 52033 0 3 0x92 select sshd 46383 241654 1 0 3 0x100083 ttyin getty 52033 233966 1 0 3 0x80 select sshd 13140 412360 9383 74 3 0x100092 bpf pflogd 9383 3355 1 0 3 0x80 netio pflogd 10208 169514 88288 73 3 0x100090 kqread syslogd 88288 462835 1 0 3 0x100082 netio syslogd 64916 8490 1 77 3 0x100090 poll dhclient 11083 64784 1 0 3 0x80 poll dhclient 62122 484941 0 0 3 0x14200 bored smr 79226 398274 0 0 2 0x14200 zerothread 11109 477601 0 0 3 0x14200 aiodoned aiodoned 74396 412450 0 0 3 0x14200 syncer update 92963 326441 0 0 3 0x14200 cleaner cleaner 40511 382620 0 0 7 0x14200 reaper 39399 299357 0 0 3 0x14200 pgdaemon pagedaemon 1422 477121 0 0 3 0x14200 bored crynlk 38992 160119 0 0 3 0x14200 bored crypto 723 285779 0 0 3 0x40014200 acpi0 acpi0 21116 164254 0 0 3 0x40014200 idle1 38514 279395 0 0 3 0x14200 bored softnet 84262 210949 0 0 3 0x14200 bored systqmp 48797 380868 0 0 3 0x14200 bored systq 77916 228108 0 0 3 0x40014200 bored softclock 40525 32141 0 0 3 0x40014200 idle0 1 480628 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 25994 (syz-executor.0) thread 0xffff800020e23128 (362337) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff8291e8a8) #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{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9538 6486K 7832K 78643K 11946 0 pcb 13 8K 8K 78643K 107 0 rtable 127 9K 11K 78643K 556 0 ifaddr 90 18K 18K 78643K 191 0 counters 43 33K 34K 78643K 63 0 ioctlops 0 0K 4K 78643K 1535 0 iov 0 0K 16K 78643K 48 0 mount 1 1K 1K 78643K 1 0 vnodes 1229 77K 78K 78643K 1708 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 7 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 58 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 422 0 sigio 0 0K 0K 78643K 3 0 proc 61 63K 83K 78643K 501 0 subproc 32 2K 2K 78643K 53 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 146 0 in_multi 75 3K 3K 78643K 243 0 ether_multi 1 0K 0K 78643K 20 0 mrt 0 0K 0K 78643K 1 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 263 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 127 71K 71K 78643K 2349 0 UVM aobj 16 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 82 0 NDP 13 0K 0K 78643K 36 0 temp 117 3867K 3935K 78643K 6327 0 kqueue 3 4K 6K 78643K 10 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 12 0 5 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 35 0 33 1 0 1 1 0 8 0 rtentry 112 98 0 56 2 0 2 2 0 8 0 unpcb 120 280 0 270 1 0 1 1 0 8 0 syncache 264 6 0 6 2 1 1 1 0 8 1 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 187 0 187 2 2 0 1 0 8 0 tcpcb 544 204 0 196 1 0 1 1 0 8 0 inpcb 296 614 0 607 2 0 2 2 0 8 1 nd6 48 25 0 22 1 0 1 1 0 8 0 ppxss 1128 2 0 2 1 1 0 1 0 8 0 pffrag 232 2 0 2 1 1 0 1 0 482 0 pffrnode 88 2 0 2 1 1 0 1 0 8 0 pffrent 40 6 0 6 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 70 0 61 2 0 2 2 0 8 1 pfstitem 24 13 0 5 1 0 1 1 0 8 0 pfstkey 112 13 0 5 1 0 1 1 0 8 0 pfstate 328 13 0 5 1 0 1 1 0 8 0 pfrule 1360 45 0 28 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 362 0 179 15 2 13 15 0 8 0 art_table 32 363 0 179 2 0 2 2 0 8 0 art_node 16 95 0 55 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 6 1 1 0 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 52 0 42 1 0 1 1 0 8 0 shmpl 112 15 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1957 0 554 89 0 89 89 0 8 0 ffsino 272 1957 0 554 95 1 94 95 0 8 0 nchpl 144 2780 0 1184 60 0 60 60 0 8 0 uvmvnodes 72 2425 0 0 45 0 45 45 0 8 0 vnodes 208 2425 0 0 128 0 128 128 0 8 0 namei 1024 8059 0 8059 2 1 1 1 0 8 1 percpumem 16 42 0 10 1 0 1 1 0 8 0 vcpupl 1984 5 0 0 1 0 1 1 0 8 0 vmpool 560 7 0 2 1 0 1 1 0 8 0 pfiaddrpl 120 32 0 24 1 0 1 1 0 8 0 scxspl 192 8037 0 8037 8 7 1 7 0 8 1 plimitpl 152 45 0 37 1 0 1 1 0 8 0 sigapl 424 655 0 603 6 0 6 6 0 8 0 futexpl 56 6333 0 6332 1 0 1 1 0 8 0 knotepl 112 79 0 60 1 0 1 1 0 8 0 kqueuepl 144 56 0 54 1 0 1 1 0 8 0 pipelkpl 48 121 0 111 2 1 1 1 0 8 0 pipepl 120 242 0 223 2 1 1 1 0 8 0 fdescpl 496 619 0 603 3 0 3 3 0 8 0 filepl 152 3963 0 3861 5 0 5 5 0 8 0 lockfpl 104 84 0 83 1 0 1 1 0 8 0 lockfspl 48 36 0 35 1 0 1 1 0 8 0 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 21 0 10 1 0 1 1 0 8 0 ucredpl 96 438 0 429 1 0 1 1 0 8 0 zombiepl 144 603 0 602 2 1 1 1 0 8 0 processpl 984 655 0 602 7 0 7 7 0 8 0 procpl 624 1540 0 1476 6 0 6 6 0 8 0 sosppl 128 4 0 4 2 2 0 1 0 8 0 sockpl 400 930 0 911 4 1 3 4 0 8 1 mcl64k 65536 11 0 0 2 0 2 2 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 5 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 189 0 0 23 0 23 23 0 8 0 mtagpl 96 39 0 0 1 0 1 1 0 8 0 mbufpl 256 230 0 0 13 0 13 13 0 8 0 bufpl 280 4144 0 133 287 0 287 287 0 8 0 anonpl 16 70689 0 54274 69 2 67 67 0 124 0 amapchunkpl 152 3908 0 3742 20 8 12 20 0 158 4 amappl16 192 2269 0 1390 45 0 45 45 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 202 0 193 1 0 1 1 0 8 0 amappl13 168 433 0 425 2 1 1 1 0 8 0 amappl12 160 185 0 182 1 0 1 1 0 8 0 amappl11 152 59 0 44 1 0 1 1 0 8 0 amappl10 144 26 0 21 1 0 1 1 0 8 0 amappl9 136 390 0 389 1 0 1 1 0 8 0 amappl8 128 360 0 331 1 0 1 1 0 8 0 amappl7 120 125 0 112 1 0 1 1 0 8 0 amappl6 112 28 0 25 1 0 1 1 0 8 0 amappl5 104 147 0 132 1 0 1 1 0 8 0 amappl4 96 887 0 851 1 0 1 1 0 8 0 amappl3 88 497 0 488 1 0 1 1 0 8 0 amappl2 80 3958 0 3876 2 0 2 2 0 8 0 amappl1 72 23270 0 22785 23 13 10 18 0 8 0 amappl 80 1796 0 1742 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 1 1 0 1 1 0 8 0 uaddrrnd 24 626 0 605 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 626 0 605 1 0 1 1 0 8 0 vmmpekpl 168 8787 0 8749 3 1 2 3 0 8 0 vmmpepl 168 82102 0 79943 132 13 119 124 0 357 23 vmsppl 368 625 0 604 2 0 2 2 0 8 0 pdppl 4096 1259 0 1213 6 0 6 6 0 8 0 pvpl 32 227543 0 207916 171 5 166 166 0 265 5 pmappl 232 625 0 604 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 270 0 8 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82750ff0) 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(ffffffff8291e6a0) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff8291e6a0) at __mp_lock+0x127 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:89 Xsoftclock() at Xsoftclock+0x1f __mp_lock(ffffffff8291e6a0) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff8291e6a0) at __mp_lock+0x127 sys/kern/kern_lock.c:147 uvm_unmap_detach(ffff800020dcf210,1) at uvm_unmap_detach+0xe7 sys/uvm/uvm_map.c:1581 uvm_map_teardown(fffffd807efffa10) at uvm_map_teardown+0x25c sys/uvm/uvm_map.c:2757 uvmspace_free(fffffd807efffa10) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3646 uvm_exit(ffff800020ef2f90) at uvm_exit+0x29 sys/uvm/uvm_glue.c:297 reaper(ffff800020d895f0) at reaper+0x189 sys/kern/kern_exit.c:456 end trace frame: 0x0, count: -12 ddb{0}> machine ddbcpu 1 Stopped at _bpf_mtap+0x68: movl 0x18(%rbx),%r13d ddb{1}> trace _bpf_mtap(ffff800000aa4fc0,fffffd806a832800,fffffd806a832800,2) at _bpf_mtap+0x68 sys/net/bpf.c:1281 tun_dev_read(5d00,ffff8000227a1ab8,10) at tun_dev_read+0x113 spec_read(ffff8000227a1900) at spec_read+0xf1 sys/kern/spec_vnops.c:222 VOP_READ(fffffd807eaa3278,ffff8000227a1ab8,10,fffffd807f7bfa20) at VOP_READ+0xbf sys/kern/vfs_vops.c:247 vn_read(fffffd8068338bf8,ffff8000227a1ab8,0) at vn_read+0x124 sys/kern/vfs_vnops.c:375 dofilereadv(ffff800020e23128,f0,ffff8000227a1ab8,0,ffff8000227a1ba0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020e23128,ffff8000227a1b50,ffff8000227a1ba0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff8000227a1c20) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000227a1c20) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc0eb00c9760, count: -9