uvm_fault(0xffffffff8277aa10, 0xffffffff82682bc8, 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, 0xffffffff82682bc8, 0, 2) -> e m_copyback(ffff8000216f6230,158,0,ffff8000216f63f4,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff8000216f6230,158,0,ffff8000216f63f4,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 end trace frame: 0xffff8000216f64b0, count: 0 ddb{0}> trace m_copyback(ffff8000216f6230,158,0,ffff8000216f63f4,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff8000216f6230,158,0,ffff8000216f63f4,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044a00,ffff8000216f64d8,fffffd80661c5300) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff8000216f65d8,0,ffff800000bf9fe0,0,ffffffff82879b30,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b5d000,ffff8000216f68a8) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff8000216f68a8,ffff8000216f68b4,29,0,ffff800000b5d000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b5d000,fffffd80661c5300) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d01,ffff8000216f6b98,ffff800023116000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff8000216f69f0) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd8067f38500,ffff8000216f6b98,11,fffffd807f7bf780) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd806ca9e3a0,ffff8000216f6b98,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff80002419e518,f0,ffff8000216f6b98,0,ffff8000216f6c80) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff80002419e518,ffff8000216f6c30,ffff8000216f6c80) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff8000216f6d00) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000216f6d00) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2776a81f320, count: -14 ddb{0}> show registers rdi 0 rsi 0x9556f acpi_pdirpa+0x813d7 rbp 0xffff8000216f6210 rbx 0xffffffffffffa230 rdx 0x9556e acpi_pdirpa+0x813d6 rcx 0xffffffff826b1a40 mbstat_boot_boot_cpumem rax 0 r8 0x2 r9 0xffffffff81e7a848 pf_translate_a+0x1a8 r10 0x1 r11 0x1a5177e866779f50 r12 0xfffffd8064237500 r13 0x128 r14 0x30 r15 0xffff8000216f6410 rip 0xffffffff81142cf9 m_copyback+0x119 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000216f6150 ss 0x10 m_copyback+0x119: addq $0x1,0x8(%rcx,%rbx,8) ddb{0}> show proc PROC (syz-executor.1) pid=9313 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff80002419ea08,0xffffffff82888178 process=0xffff800020e00400 user=0xffff8000216f1000, vmspace=0xfffffd807effe450 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 74070 71464 13147 0 2 0 syz-executor.1 74070 283654 13147 0 2 0x4000000 syz-executor.1 *74070 9313 13147 0 7 0x4000000 syz-executor.1 13147 482917 45436 0 3 0x82 nanosleep syz-executor.1 62652 271910 45436 0 3 0x82 piperd syz-executor.0 36510 162767 0 0 3 0x14200 bored sosplice 4914 199463 0 0 3 0x14280 nfsidl nfsio 36381 358603 0 0 3 0x14280 nfsidl nfsio 38965 323696 0 0 3 0x14280 nfsidl nfsio 64755 107897 0 0 3 0x14280 nfsidl nfsio 3887 181960 0 0 3 0x14280 nfsidl nfsio 16943 339386 0 0 3 0x14280 nfsidl nfsio 23413 431581 0 0 3 0x14280 nfsidl nfsio 97681 397559 0 0 3 0x14280 nfsidl nfsio 9931 317390 0 0 3 0x14280 nfsidl nfsio 68068 524058 0 0 3 0x14280 nfsidl nfsio 77464 361663 0 0 3 0x14280 nfsidl nfsio 41527 175126 0 0 3 0x14280 nfsidl nfsio 13893 80050 0 0 3 0x14280 nfsidl nfsio 63521 491065 0 0 3 0x14280 nfsidl nfsio 75688 191279 0 0 3 0x14280 nfsidl nfsio 91202 503433 0 0 3 0x14280 nfsidl nfsio 55786 499590 0 0 3 0x14280 nfsidl nfsio 99571 155904 0 0 3 0x14280 nfsidl nfsio 6302 316188 0 0 3 0x14280 nfsidl nfsio 19509 188732 0 0 3 0x14280 nfsidl nfsio 45436 88665 58818 0 3 0x82 thrsleep syz-fuzzer 45436 221080 58818 0 3 0x4000082 nanosleep syz-fuzzer 45436 106250 58818 0 7 0x4000002 syz-fuzzer 45436 497225 58818 0 3 0x4000082 kqread syz-fuzzer 45436 296426 58818 0 3 0x4000082 thrsleep syz-fuzzer 45436 445248 58818 0 3 0x4000082 thrsleep syz-fuzzer 45436 197103 58818 0 3 0x4000082 thrsleep syz-fuzzer 45436 248528 58818 0 3 0x4000082 thrsleep syz-fuzzer 58818 21703 85770 0 3 0x10008a pause ksh 85770 364303 46443 0 3 0x92 select sshd 70150 249837 1 0 3 0x100083 ttyin getty 46443 291831 1 0 3 0x80 select sshd 36734 446132 78837 74 3 0x100092 bpf pflogd 78837 188762 1 0 3 0x80 netio pflogd 81390 357567 20808 73 3 0x100090 kqread syslogd 20808 289956 1 0 3 0x100082 netio syslogd 27109 449739 1 77 3 0x100090 poll dhclient 62150 492212 1 0 3 0x80 poll dhclient 28531 170767 0 0 3 0x14200 bored smr 86454 371136 0 0 2 0x14200 zerothread 59956 308093 0 0 3 0x14200 aiodoned aiodoned 85073 440143 0 0 3 0x14200 syncer update 38262 307069 0 0 3 0x14200 cleaner cleaner 5954 368584 0 0 3 0x14200 reaper reaper 37652 453461 0 0 3 0x14200 pgdaemon pagedaemon 74212 329006 0 0 3 0x14200 bored crynlk 23871 58757 0 0 3 0x14200 bored crypto 36881 311964 0 0 3 0x40014200 acpi0 acpi0 6304 258817 0 0 3 0x40014200 idle1 58968 476770 0 0 3 0x14200 bored softnet 42788 489440 0 0 3 0x14200 bored systqmp 28224 431193 0 0 3 0x14200 bored systq 43606 239507 0 0 3 0x40014200 bored softclock 23999 261000 0 0 3 0x40014200 idle0 1 229198 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 74070 (syz-executor.1) thread 0xffff80002419e518 (9313) 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 9546 6435K 8239K 78643K 35254 0 pcb 13 8K 8K 78643K 381 0 rtable 122 22K 26K 78643K 1283 0 ifaddr 93 18K 19K 78643K 388 0 sysctl 3 1K 1K 78643K 3 0 counters 43 33K 34K 78643K 133 0 ioctlops 0 0K 5K 78643K 2720 0 iov 0 0K 32K 78643K 317 0 mount 1 1K 1K 78643K 1 0 vnodes 1218 77K 77K 78643K 7954 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 46 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 146 0 dirhash 9 1K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 4785 0 sigio 0 0K 0K 78643K 42 0 proc 64 63K 95K 78643K 813 0 subproc 32 2K 2K 78643K 119 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 298 0 in_multi 19 1K 2K 78643K 298 0 ether_multi 1 0K 0K 78643K 47 0 mrt 0 0K 0K 78643K 8 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 67 307K 307K 78643K 67 0 exec 0 0K 2K 78643K 662 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 193 206K 211K 78643K 15759 0 UVM aobj 109 8K 8K 78643K 117 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 275 0 NDP 15 0K 0K 78643K 90 0 temp 152 3981K 4055K 78643K 70748 0 kqueue 3 4K 20K 78643K 91 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 20 0 13 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 146 0 144 1 0 1 1 0 8 0 rtentry 112 185 0 159 2 0 2 2 0 8 0 unpcb 120 1987 0 1977 2 1 1 2 0 8 0 syncache 272 6 0 6 3 3 0 1 0 8 0 tcpqe 32 71 0 71 1 1 0 1 0 8 0 tcpcb 592 842 0 838 12 11 1 2 0 8 0 inpcb 296 4499 0 4491 20 18 2 2 0 8 1 rttmr 72 4 0 4 2 2 0 1 0 8 0 nd6 48 47 0 46 1 0 1 1 0 8 0 pkpcb 40 20 0 20 6 6 0 1 0 8 0 swfcl 56 1 0 0 1 0 1 1 0 8 0 ppxss 1136 6 0 6 3 3 0 1 0 8 0 pfstscr 40 4 0 4 2 2 0 1 0 8 0 pffrag 232 24 0 24 10 10 0 1 0 482 0 pffrnode 88 24 0 24 10 10 0 1 0 8 0 pffrent 40 830 0 830 10 10 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 pfrke_plain 160 8 0 8 1 1 0 1 0 8 0 pfrktable 1344 169 0 148 8 6 2 3 0 8 0 pftag 88 5 0 3 2 1 1 1 0 8 0 pfqueue 264 2 0 2 1 1 0 1 0 8 0 pfstitem 24 24 0 22 1 0 1 1 0 8 0 pfstkey 112 26 0 24 1 0 1 1 0 8 0 pfstate 328 24 0 22 2 1 1 2 0 8 0 pfsrctr 152 4 0 4 1 1 0 1 0 8 0 pfrule 1360 398 0 89 28 1 27 27 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 993 0 871 15 4 11 12 0 8 0 art_table 32 994 0 871 2 0 2 2 0 8 0 art_node 16 184 0 163 1 0 1 1 0 8 0 sysvmsgpl 40 36 0 23 1 0 1 1 0 8 0 semupl 112 7 0 7 1 1 0 1 0 8 0 semapl 112 138 0 128 1 0 1 1 0 8 0 shmpl 112 114 0 8 4 0 4 4 0 8 0 dirhash 1024 17 0 10 3 1 2 3 0 8 0 dino2pl 256 7023 0 5625 93 5 88 89 0 8 0 ffsino 272 7023 0 5625 94 0 94 94 0 8 0 nchpl 144 13476 0 11889 60 0 60 60 0 8 0 rtmask 32 16 0 16 1 1 0 1 0 8 0 uvmvnodes 72 12882 0 0 235 0 235 235 0 8 0 vnodes 208 12882 0 0 678 0 678 678 0 8 0 namei 1024 45014 0 45014 10 9 1 1 0 8 1 percpumem 16 77 0 45 1 0 1 1 0 8 0 vcpupl 1984 18 0 1 3 0 3 3 0 8 0 vmpool 560 31 0 14 2 0 2 2 0 8 0 pfiaddrpl 120 116 0 38 3 0 3 3 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 200 42594 0 42594 26 24 2 7 0 8 2 plimitpl 152 237 0 229 1 0 1 1 0 8 0 sigapl 424 5008 0 4956 9 3 6 7 0 8 0 futexpl 56 80141 0 80141 10 9 1 1 0 8 1 knotepl 112 225 0 205 1 0 1 1 0 8 0 kqueuepl 152 334 0 318 1 0 1 1 0 8 0 pipepl 304 488 0 477 12 11 1 2 0 8 0 fdescpl 496 4970 0 4954 3 0 3 3 0 8 0 filepl 152 30475 0 30373 8 3 5 6 0 8 1 lockfpl 104 11976 0 11975 1 0 1 1 0 8 0 lockfspl 48 4977 0 4976 1 0 1 1 0 8 0 sessionpl 120 23 0 12 1 0 1 1 0 8 0 pgrppl 48 78 0 67 1 0 1 1 0 8 0 ucredpl 96 1966 0 1956 1 0 1 1 0 8 0 zombiepl 144 4956 0 4956 4 3 1 1 0 8 1 processpl 1008 5008 0 4956 7 0 7 7 0 8 0 procpl 632 14879 0 14818 6 0 6 6 0 8 0 srpgc 72 2 0 2 1 1 0 1 0 8 0 sosppl 144 33 0 33 10 10 0 1 0 8 0 sockpl 400 6660 0 6641 26 23 3 5 0 8 1 mcl64k 65536 264 0 0 33 13 20 33 0 8 1 mcl16k 16384 9 0 0 2 0 2 2 0 8 0 mcl12k 12288 32 0 0 2 0 2 2 0 8 0 mcl9k 9216 14 0 0 1 0 1 1 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 13 0 0 1 0 1 1 0 8 0 mcl2k 2048 189 0 0 22 0 22 22 0 8 0 mtagpl 96 529 0 0 13 0 13 13 0 8 0 mbufpl 256 1247 0 0 74 0 74 74 0 8 0 bufpl 280 10978 0 4720 448 0 448 448 0 8 0 anonpl 16 510820 0 493853 196 118 78 91 0 124 0 amapchunkpl 152 31445 0 31172 67 52 15 25 0 158 0 amappl16 192 20443 0 19530 186 139 47 58 0 8 1 amappl15 184 497 0 495 1 0 1 1 0 8 0 amappl14 176 3359 0 3353 1 0 1 1 0 8 0 amappl13 168 60 0 59 1 0 1 1 0 8 0 amappl12 160 14 0 11 2 1 1 1 0 8 0 amappl11 152 130 0 113 1 0 1 1 0 8 0 amappl10 144 134 0 129 1 0 1 1 0 8 0 amappl9 136 1052 0 1050 1 0 1 1 0 8 0 amappl8 128 922 0 867 2 0 2 2 0 8 0 amappl7 120 435 0 427 1 0 1 1 0 8 0 amappl6 112 217 0 198 1 0 1 1 0 8 0 amappl5 104 1682 0 1670 1 0 1 1 0 8 0 amappl4 96 3772 0 3737 1 0 1 1 0 8 0 amappl3 88 4174 0 4166 1 0 1 1 0 8 0 amappl2 80 34823 0 34749 3 1 2 3 0 8 0 amappl1 72 164324 0 163857 24 14 10 19 0 8 0 amappl 80 15300 0 15208 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 64 116 0 8 4 2 2 2 0 8 0 uaddrrnd 24 5001 0 4968 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 5001 0 4968 1 0 1 1 0 8 0 vmmpekpl 168 33654 0 33606 3 0 3 3 0 8 0 vmmpepl 168 650260 0 648078 327 194 133 133 0 357 33 vmsppl 368 5000 0 4968 5 1 4 4 0 8 1 pdppl 4096 10009 0 9953 10 2 8 8 0 8 0 pvpl 32 1403914 0 1383596 406 224 182 215 0 265 0 pmappl 232 5000 0 4968 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 427 0 64 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace m_copyback(ffff8000216f6230,158,0,ffff8000216f63f4,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff8000216f6230,158,0,ffff8000216f63f4,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044a00,ffff8000216f64d8,fffffd80661c5300) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff8000216f65d8,0,ffff800000bf9fe0,0,ffffffff82879b30,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b5d000,ffff8000216f68a8) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff8000216f68a8,ffff8000216f68b4,29,0,ffff800000b5d000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b5d000,fffffd80661c5300) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d01,ffff8000216f6b98,ffff800023116000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff8000216f69f0) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd8067f38500,ffff8000216f6b98,11,fffffd807f7bf780) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd806ca9e3a0,ffff8000216f6b98,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff80002419e518,f0,ffff8000216f6b98,0,ffff8000216f6c80) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff80002419e518,ffff8000216f6c30,ffff8000216f6c80) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff8000216f6d00) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000216f6d00) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2776a81f320, 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: 0xc0020e4870, count: -3