uvm_fault(0xffffffff8277aa10, 0xffffffff82678fd8, 0, 2) -> e kernel: page fault trap, code=0 Stopped at m_copyback+0x119: addq $0x1,0x8(%rcx,%rbx,8) ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xffffffff8277aa10, 0xffffffff82678fd8, 0, 2) -> e m_copyback(ffff800022730b80,158,0,ffff800022730d44,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800022730b80,158,0,ffff800022730d44,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 end trace frame: 0xffff800022730e00, count: 0 ddb{0}> trace m_copyback(ffff800022730b80,158,0,ffff800022730d44,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800022730b80,158,0,ffff800022730d44,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044940,ffff800022730e28,fffffd806a0cdb00) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff800022730f28,0,ffff800000abfaa8,0,ffffffff82879b30,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b0d000,ffff8000227311f8) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff8000227311f8,ffff800022731204,29,0,ffff800000b0d000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b0d000,fffffd806a0cdb00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d01,ffff8000227314e8,ffff800020f13000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff800022731340) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806e56a348,ffff8000227314e8,11,fffffd807f7bf8a0) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd80679f9278,ffff8000227314e8,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800022732ef8,f0,ffff8000227314e8,0,ffff8000227315d0) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff800022732ef8,ffff800022731580,ffff8000227315d0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800022731650) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022731650) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbd5c2f58a60, count: -14 ddb{0}> show registers rdi 0 rsi 0x73c9d acpi_pdirpa+0x5fb05 rbp 0xffff800022730b60 rbx 0xffffffffffff8eb2 rdx 0x73c9c acpi_pdirpa+0x5fb04 rcx 0xffffffff826b1a40 mbstat_boot_boot_cpumem rax 0 r8 0x2 r9 0xffffffff81e7a848 pf_translate_a+0x1a8 r10 0x1 r11 0x723237b2b290457d r12 0xfffffd806a0ce200 r13 0x128 r14 0x30 r15 0xffff800022730d60 rip 0xffffffff81142cf9 m_copyback+0x119 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800022730aa0 ss 0x10 m_copyback+0x119: addq $0x1,0x8(%rcx,%rbx,8) ddb{0}> show proc PROC (syz-executor.1) pid=160914 stat=onproc flags process=0 proc=4000000 pri=66, usrpri=66, nice=20 forw=0xffffffffffffffff, list=0xffff800022733660,0xffffffff82888178 process=0xffff800022718000 user=0xffff80002272c000, vmspace=0xfffffd806e8e7458 estcpu=16, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 6044 171643 71764 0 7 0 syz-executor.1 * 6044 160914 71764 0 7 0x4000000 syz-executor.1 53397 192213 22632 0 2 0 syz-executor.0 53397 303891 22632 0 3 0x4000080 fsleep syz-executor.0 22632 26054 84155 0 3 0x82 nanosleep syz-executor.0 97669 88092 0 0 3 0x14280 nfsidl nfsio 26082 434448 0 0 3 0x14280 nfsidl nfsio 8019 274058 0 0 3 0x14280 nfsidl nfsio 77687 239573 0 0 3 0x14280 nfsidl nfsio 18170 316542 0 0 3 0x14280 nfsidl nfsio 54966 315074 0 0 3 0x14280 nfsidl nfsio 19477 304070 0 0 3 0x14280 nfsidl nfsio 69311 84291 0 0 3 0x14280 nfsidl nfsio 91227 499723 0 0 3 0x14280 nfsidl nfsio 70175 469634 0 0 3 0x14280 nfsidl nfsio 3475 50665 0 0 3 0x14280 nfsidl nfsio 47863 256129 0 0 3 0x14280 nfsidl nfsio 35012 184707 0 0 3 0x14280 nfsidl nfsio 33051 498345 0 0 3 0x14280 nfsidl nfsio 78213 336367 0 0 3 0x14280 nfsidl nfsio 13391 253691 0 0 3 0x14280 nfsidl nfsio 34096 237209 0 0 3 0x14280 nfsidl nfsio 64661 874 0 0 3 0x14280 nfsidl nfsio 70171 508875 0 0 3 0x14280 nfsidl nfsio 70665 406498 0 0 3 0x14280 nfsidl nfsio 35997 83762 0 0 3 0x14200 bored sosplice 71764 173436 84155 0 3 0x82 nanosleep syz-executor.1 84155 377531 95519 0 3 0x82 thrsleep syz-fuzzer 84155 500535 95519 0 3 0x4000082 thrsleep syz-fuzzer 84155 396858 95519 0 3 0x4000082 thrsleep syz-fuzzer 84155 516066 95519 0 3 0x4000082 thrsleep syz-fuzzer 84155 248942 95519 0 3 0x4000082 thrsleep syz-fuzzer 84155 389976 95519 0 3 0x4000082 kqread syz-fuzzer 84155 158987 95519 0 3 0x4000082 thrsleep syz-fuzzer 84155 295656 95519 0 3 0x4000082 thrsleep syz-fuzzer 84155 499672 95519 0 3 0x4000082 thrsleep syz-fuzzer 95519 426433 61531 0 3 0x10008a pause ksh 61531 433550 7267 0 3 0x92 select sshd 47288 323434 1 0 3 0x100083 ttyin getty 7267 115658 1 0 3 0x80 select sshd 65628 206828 42297 74 3 0x100092 bpf pflogd 42297 388308 1 0 3 0x80 netio pflogd 99022 235154 361 73 3 0x100090 kqread syslogd 361 497655 1 0 3 0x100082 netio syslogd 71152 280763 1 77 3 0x100090 poll dhclient 79406 178903 1 0 3 0x80 poll dhclient 11525 206577 0 0 3 0x14200 bored smr 92878 51123 0 0 2 0x14200 zerothread 60046 242774 0 0 3 0x14200 aiodoned aiodoned 20155 414085 0 0 3 0x14200 syncer update 97597 45666 0 0 3 0x14200 cleaner cleaner 99858 295165 0 0 3 0x14200 reaper reaper 27607 350901 0 0 3 0x14200 pgdaemon pagedaemon 37685 466967 0 0 3 0x14200 bored crynlk 14933 157192 0 0 3 0x14200 bored crypto 39878 409432 0 0 3 0x40014200 acpi0 acpi0 2982 408298 0 0 3 0x40014200 idle1 36931 88335 0 0 3 0x14200 bored softnet 86781 96840 0 0 3 0x14200 bored systqmp 62143 84995 0 0 3 0x14200 bored systq 26545 128312 0 0 3 0x40014200 bored softclock 75617 358290 0 0 3 0x40014200 idle0 1 494644 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 6044 (syz-executor.1) thread 0xffff800022732ef8 (160914) exclusive rwlock netlock r = 0 (0xffffffff827435e0) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164 #1 tun_dev_write+0x1f9 sys/net/if_tun.c:867 #2 spec_write+0xd4 sys/kern/spec_vnops.c:309 #3 VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 #4 vn_write+0x14e sys/kern/vfs_vnops.c:414 #5 dofilewritev+0x1ab sys/kern/sys_generic.c:365 #6 sys_write+0x83 sys/kern/sys_generic.c:285 #7 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #7 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 #8 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff8289f9d8) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164 #1 vn_write+0x42 sys/kern/vfs_vnops.c:399 #2 dofilewritev+0x1ab sys/kern/sys_generic.c:365 #3 sys_write+0x83 sys/kern/sys_generic.c:285 #4 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #4 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 #5 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9482 6408K 6785K 78643K 10787 0 pcb 13 8K 8K 78643K 61 0 rtable 107 4K 5K 78643K 288 0 ifaddr 49 11K 11K 78643K 62 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 33K 78643K 45 0 ioctlops 0 0K 4K 78643K 1500 0 iov 0 0K 16K 78643K 14 0 mount 1 1K 1K 78643K 1 0 vnodes 1219 77K 77K 78643K 1293 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 6 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 50 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 6 17K 25K 78643K 233 0 sigio 0 0K 0K 78643K 2 0 proc 61 63K 95K 78643K 483 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 7 0 in_multi 29 1K 2K 78643K 70 0 ether_multi 1 0K 0K 78643K 5 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 2K 78643K 394 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 137 57K 58K 78643K 1595 0 UVM aobj 8 2K 2K 78643K 11 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 48 0 NDP 7 0K 0K 78643K 15 0 temp 77 3955K 4019K 78643K 2788 0 kqueue 3 4K 8K 78643K 7 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 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 37 0 35 1 0 1 1 0 8 0 rtentry 112 65 0 24 2 0 2 2 0 8 0 unpcb 120 113 0 102 1 0 1 1 0 8 0 syncache 272 4 0 4 1 1 0 1 0 8 0 tcpqe 32 8 0 8 1 1 0 1 0 8 0 tcpcb 592 127 0 123 2 1 1 2 0 8 0 inpcb 296 296 0 288 2 0 2 2 0 8 1 nd6 48 13 0 9 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 1 0 1 1 1 0 1 0 482 0 pffrnode 88 1 0 1 1 1 0 1 0 8 0 pffrent 40 2 0 2 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 5 0 3 1 0 1 1 0 8 0 pfstitem 24 14 0 5 1 0 1 1 0 8 0 pfstkey 112 14 0 5 1 0 1 1 0 8 0 pfstate 328 14 0 5 1 0 1 1 0 8 0 pfrule 1360 25 0 18 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 279 0 107 14 1 13 14 0 8 2 art_table 32 280 0 107 2 0 2 2 0 8 0 art_node 16 64 0 26 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 5 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 44 0 34 1 0 1 1 0 8 0 shmpl 112 8 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1644 0 240 89 0 89 89 0 8 1 ffsino 272 1644 0 240 94 0 94 94 0 8 0 nchpl 144 2113 0 521 60 0 60 60 0 8 0 uvmvnodes 72 1749 0 0 32 0 32 32 0 8 0 vnodes 208 1749 0 0 93 0 93 93 0 8 0 namei 1024 5729 0 5729 1 0 1 1 0 8 1 percpumem 16 33 0 1 1 0 1 1 0 8 0 vcpupl 1984 4 0 0 1 0 1 1 0 8 0 vmpool 560 6 0 2 2 1 1 1 0 8 0 pfiaddrpl 120 2 0 0 1 0 1 1 0 8 0 scxspl 200 6450 0 6450 9 8 1 7 0 8 1 plimitpl 152 32 0 24 1 0 1 1 0 8 0 sigapl 424 466 0 413 6 0 6 6 0 8 0 futexpl 56 2380 0 2379 1 0 1 1 0 8 0 knotepl 112 78 0 58 1 0 1 1 0 8 0 kqueuepl 152 22 0 20 1 0 1 1 0 8 0 pipepl 304 291 0 280 2 0 2 2 0 8 1 fdescpl 496 430 0 413 3 0 3 3 0 8 0 filepl 152 2459 0 2354 5 0 5 5 0 8 0 lockfpl 104 45 0 44 1 0 1 1 0 8 0 lockfspl 48 18 0 17 1 0 1 1 0 8 0 sessionpl 120 19 0 8 1 0 1 1 0 8 0 pgrppl 48 21 0 10 1 0 1 1 0 8 0 ucredpl 96 147 0 138 1 0 1 1 0 8 0 zombiepl 144 413 0 413 1 0 1 1 0 8 1 processpl 1008 466 0 413 7 0 7 7 0 8 0 procpl 632 1035 0 972 6 0 6 6 0 8 0 sosppl 144 3 0 3 2 1 1 1 0 8 1 sockpl 400 450 0 429 4 1 3 4 0 8 0 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 6 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 261 0 0 32 0 32 32 0 8 0 mtagpl 96 25 0 0 1 0 1 1 0 8 0 mbufpl 256 310 0 0 18 0 18 18 0 8 0 bufpl 280 3881 0 187 264 0 264 264 0 8 0 anonpl 16 59984 0 45869 82 1 81 81 0 124 6 amapchunkpl 152 2746 0 2439 14 0 14 14 0 158 0 amappl16 192 1821 0 966 48 0 48 48 0 8 5 amappl15 184 10 0 9 3 2 1 1 0 8 0 amappl14 176 22 0 18 1 0 1 1 0 8 0 amappl13 168 32 0 31 1 0 1 1 0 8 0 amappl12 160 105 0 98 1 0 1 1 0 8 0 amappl11 152 65 0 49 1 0 1 1 0 8 0 amappl10 144 13 0 8 1 0 1 1 0 8 0 amappl9 136 374 0 372 1 0 1 1 0 8 0 amappl8 128 143 0 108 2 0 2 2 0 8 0 amappl7 120 268 0 260 1 0 1 1 0 8 0 amappl6 112 131 0 116 1 0 1 1 0 8 0 amappl5 104 591 0 575 1 0 1 1 0 8 0 amappl4 96 307 0 280 1 0 1 1 0 8 0 amappl3 88 76 0 69 1 0 1 1 0 8 0 amappl2 80 2371 0 2294 3 1 2 3 0 8 0 amappl1 72 23090 0 22608 25 15 10 19 0 8 0 amappl 80 1321 0 1235 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 10 0 3 1 0 1 1 0 8 0 uaddrrnd 24 436 0 415 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 436 0 415 1 0 1 1 0 8 0 vmmpekpl 168 8508 0 8466 3 0 3 3 0 8 0 vmmpepl 168 63902 0 61715 140 15 125 125 0 357 29 vmsppl 368 435 0 415 2 0 2 2 0 8 0 pdppl 4096 879 0 834 6 0 6 6 0 8 0 pvpl 32 202590 0 184582 193 0 193 193 0 265 15 pmappl 232 435 0 415 4 2 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 272 0 6 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace m_copyback(ffff800022730b80,158,0,ffff800022730d44,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800022730b80,158,0,ffff800022730d44,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044940,ffff800022730e28,fffffd806a0cdb00) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff800022730f28,0,ffff800000abfaa8,0,ffffffff82879b30,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b0d000,ffff8000227311f8) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff8000227311f8,ffff800022731204,29,0,ffff800000b0d000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b0d000,fffffd806a0cdb00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d01,ffff8000227314e8,ffff800020f13000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff800022731340) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806e56a348,ffff8000227314e8,11,fffffd807f7bf8a0) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd80679f9278,ffff8000227314e8,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800022732ef8,f0,ffff8000227314e8,0,ffff8000227315d0) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff800022732ef8,ffff800022731580,ffff8000227315d0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800022731650) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022731650) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbd5c2f58a60, count: -14 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+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 end of kernel end trace frame: 0x7f7ffffcdf30, count: -3