uvm_fault(0xffffffff8277aa10, 0xffffffff8268ccb8, 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, 0xffffffff8268ccb8, 0, 2) -> e m_copyback(ffff800021f11f70,138,0,ffff800021f12134,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800021f11f70,138,0,ffff800021f12134,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 end trace frame: 0xffff800021f121f0, count: 0 ddb{0}> trace m_copyback(ffff800021f11f70,138,0,ffff800021f12134,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800021f11f70,138,0,ffff800021f12134,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044940,ffff800021f12218,fffffd806f29f700) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff800021f12318,0,ffff800000b19530,0,ffffffff82879b30,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000adc000,ffff800021f125e8) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff800021f125e8,ffff800021f125f4,29,0,ffff800000adc000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000adc000,fffffd806f29f700) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d01,ffff800021f128d8,ffff800020f0d000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff800021f12730) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806fcde5b8,ffff800021f128d8,11,fffffd807f7bf8a0) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd8068212738,ffff800021f128d8,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff80002310e028,f0,ffff800021f128d8,0,ffff800021f129c0) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff80002310e028,ffff800021f12970,ffff800021f129c0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800021f12a40) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021f12a40) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbf50fe94840, count: -14 ddb{0}> show registers rdi 0 rsi 0x739e7 acpi_pdirpa+0x5f84f rbp 0xffff800021f11f50 rbx 0xffffffffffffb64e rdx 0x739e6 acpi_pdirpa+0x5f84e rcx 0xffffffff826b1a40 mbstat_boot_boot_cpumem rax 0 r8 0x2 r9 0xffffffff81e7a848 pf_translate_a+0x1a8 r10 0x1 r11 0x8c9aa8a8c6e0da9f r12 0xfffffd8074a9ae00 r13 0x108 r14 0x30 r15 0xffff800021f12150 rip 0xffffffff81142cf9 m_copyback+0x119 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021f11e90 ss 0x10 m_copyback+0x119: addq $0x1,0x8(%rcx,%rbx,8) ddb{0}> show proc PROC (syz-executor.1) pid=83237 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff80002310e518,0xffff80002310fb60 process=0xffff8000221073b0 user=0xffff800021f0d000, vmspace=0xfffffd806e8e9738 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 11635 234478 41892 0 7 0 syz-executor.0 2479 180586 93502 0 2 0 syz-executor.1 * 2479 83237 93502 0 7 0x4000000 syz-executor.1 41892 280957 75783 0 3 0x82 nanosleep syz-executor.0 58582 46326 0 0 3 0x14280 nfsidl nfsio 36747 149321 0 0 3 0x14280 nfsidl nfsio 62035 371772 0 0 3 0x14280 nfsidl nfsio 32542 39449 0 0 3 0x14280 nfsidl nfsio 86062 377264 0 0 3 0x14280 nfsidl nfsio 55129 1083 0 0 3 0x14280 nfsidl nfsio 38770 422975 0 0 3 0x14280 nfsidl nfsio 11523 47481 0 0 3 0x14280 nfsidl nfsio 94309 96704 0 0 3 0x14280 nfsidl nfsio 27102 150930 0 0 3 0x14280 nfsidl nfsio 26785 486085 0 0 3 0x14280 nfsidl nfsio 55035 176600 0 0 3 0x14280 nfsidl nfsio 42557 196662 0 0 3 0x14280 nfsidl nfsio 1811 145807 0 0 3 0x14280 nfsidl nfsio 62241 234296 0 0 3 0x14280 nfsidl nfsio 13770 97863 0 0 3 0x14280 nfsidl nfsio 18494 51060 0 0 3 0x14280 nfsidl nfsio 75915 159002 0 0 3 0x14280 nfsidl nfsio 75736 382977 0 0 3 0x14280 nfsidl nfsio 88750 368503 0 0 3 0x14280 nfsidl nfsio 93502 261079 75783 0 3 0x82 nanosleep syz-executor.1 75783 62352 27457 0 3 0x82 thrsleep syz-fuzzer 75783 357430 27457 0 3 0x4000082 nanosleep syz-fuzzer 75783 29065 27457 0 3 0x4000082 thrsleep syz-fuzzer 75783 49808 27457 0 3 0x4000082 kqread syz-fuzzer 75783 169163 27457 0 3 0x4000082 thrsleep syz-fuzzer 75783 471147 27457 0 3 0x4000082 thrsleep syz-fuzzer 75783 293003 27457 0 3 0x4000082 thrsleep syz-fuzzer 75783 353043 27457 0 3 0x4000082 nanosleep syz-fuzzer 27457 172059 81839 0 3 0x10008a pause ksh 81839 72004 61394 0 3 0x92 select sshd 59088 55133 1 0 3 0x100083 ttyin getty 61394 255435 1 0 3 0x80 select sshd 65727 264447 77213 74 3 0x100092 bpf pflogd 77213 480788 1 0 3 0x80 netio pflogd 51051 73907 14065 73 3 0x100090 kqread syslogd 14065 508568 1 0 3 0x100082 netio syslogd 95497 418670 1 77 3 0x100090 poll dhclient 17664 86099 1 0 3 0x80 poll dhclient 34009 114061 0 0 3 0x14200 bored smr 83115 493818 0 0 2 0x14200 zerothread 52797 228658 0 0 3 0x14200 aiodoned aiodoned 23661 157788 0 0 3 0x14200 syncer update 45711 393336 0 0 3 0x14200 cleaner cleaner 71933 431523 0 0 3 0x14200 reaper reaper 82962 398706 0 0 3 0x14200 pgdaemon pagedaemon 96140 55916 0 0 3 0x14200 bored crynlk 49909 266346 0 0 3 0x14200 bored crypto 83726 196668 0 0 3 0x40014200 acpi0 acpi0 54132 146887 0 0 3 0x40014200 idle1 10716 103528 0 0 3 0x14200 bored softnet 86869 16796 0 0 3 0x14200 bored systqmp 51566 517707 0 0 3 0x14200 bored systq 43602 11575 0 0 3 0x40014200 bored softclock 41717 505555 0 0 3 0x40014200 idle0 1 483420 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 2479 (syz-executor.1) thread 0xffff80002310e028 (83237) 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 9494 6534K 6731K 78643K 10999 0 pcb 13 8K 8K 78643K 31 0 rtable 131 9K 9K 78643K 455 0 ifaddr 61 13K 13K 78643K 93 0 counters 43 33K 34K 78643K 53 0 ioctlops 0 0K 4K 78643K 1498 0 iov 0 0K 16K 78643K 14 0 mount 1 1K 1K 78643K 1 0 vnodes 1222 77K 77K 78643K 1517 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 1K 78643K 66 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 6 17K 25K 78643K 427 0 proc 61 63K 95K 78643K 487 0 subproc 32 2K 2K 78643K 51 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 8 0 in_multi 33 2K 2K 78643K 66 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 31 148K 148K 78643K 31 0 exec 0 0K 2K 78643K 397 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 150 26K 26K 78643K 2020 0 UVM aobj 10 6K 6K 78643K 13 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 12 0 NDP 11 0K 0K 78643K 23 0 temp 98 3960K 4034K 78643K 3290 0 kqueue 3 4K 4K 78643K 3 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 23 0 21 1 0 1 1 0 8 0 rtentry 112 63 0 19 2 0 2 2 0 8 0 unpcb 120 172 0 162 1 0 1 1 0 8 0 syncache 272 6 0 6 2 1 1 1 0 8 1 tcpcb 592 58 0 48 2 0 2 2 0 8 1 inpcb 296 368 0 361 2 0 2 2 0 8 1 nd6 48 13 0 7 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 pffrag 232 3 0 2 1 0 1 1 0 482 0 pffrnode 88 3 0 2 1 0 1 1 0 8 0 pffrent 40 96 0 95 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 16 0 5 2 1 1 2 0 8 0 pfstitem 24 21 0 3 1 0 1 1 0 8 0 pfstkey 112 21 0 3 1 0 1 1 0 8 0 pfstate 328 21 0 3 2 0 2 2 0 8 0 pfrule 1360 29 0 16 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 352 0 163 14 1 13 14 0 8 1 art_table 32 353 0 163 2 0 2 2 0 8 0 art_node 16 62 0 22 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 56 0 46 1 0 1 1 0 8 0 shmpl 112 10 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2006 0 602 88 0 88 88 0 8 0 ffsino 272 2006 0 602 94 0 94 94 0 8 0 nchpl 144 2815 0 1221 60 0 60 60 0 8 0 uvmvnodes 72 2330 0 0 43 0 43 43 0 8 0 vnodes 208 2330 0 0 123 0 123 123 0 8 0 namei 1024 7522 0 7522 1 0 1 1 0 8 1 percpumem 16 37 0 5 1 0 1 1 0 8 0 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 560 5 0 3 1 0 1 1 0 8 0 pfiaddrpl 120 8 0 0 1 0 1 1 0 8 0 scxspl 200 8336 0 8336 8 5 3 7 0 8 3 plimitpl 152 26 0 18 1 0 1 1 0 8 0 sigapl 424 659 0 607 6 0 6 6 0 8 0 futexpl 56 4351 0 4351 1 0 1 1 0 8 1 knotepl 112 74 0 54 1 0 1 1 0 8 0 kqueuepl 152 14 0 12 1 0 1 1 0 8 0 pipepl 304 105 0 94 2 0 2 2 0 8 0 fdescpl 496 624 0 607 3 0 3 3 0 8 0 filepl 152 3128 0 3024 5 0 5 5 0 8 0 lockfpl 104 37 0 36 1 0 1 1 0 8 0 lockfspl 48 17 0 16 1 0 1 1 0 8 0 sessionpl 120 19 0 8 1 0 1 1 0 8 0 pgrppl 48 19 0 8 1 0 1 1 0 8 0 ucredpl 96 165 0 156 1 0 1 1 0 8 0 zombiepl 144 607 0 607 1 0 1 1 0 8 1 processpl 1008 659 0 607 7 0 7 7 0 8 0 procpl 632 1446 0 1386 6 0 6 6 0 8 0 srpgc 72 2 0 2 1 1 0 1 0 8 0 sockpl 400 568 0 549 4 1 3 4 0 8 1 mcl64k 65536 7 0 0 1 0 1 1 0 8 0 mcl12k 12288 5 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 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 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 178 0 0 22 0 22 22 0 8 0 mtagpl 96 15 0 0 1 0 1 1 0 8 0 mbufpl 256 581 0 0 36 0 36 36 0 8 0 bufpl 280 4297 0 186 294 0 294 294 0 8 0 anonpl 16 70769 0 56952 79 1 78 78 0 124 1 amapchunkpl 152 3328 0 3065 13 1 12 13 0 158 0 amappl16 192 2240 0 1348 46 0 46 46 0 8 1 amappl15 184 9 0 7 1 0 1 1 0 8 0 amappl14 176 23 0 18 1 0 1 1 0 8 0 amappl13 168 38 0 35 1 0 1 1 0 8 0 amappl12 160 202 0 196 1 0 1 1 0 8 0 amappl11 152 58 0 42 1 0 1 1 0 8 0 amappl10 144 15 0 11 1 0 1 1 0 8 0 amappl9 136 553 0 550 1 0 1 1 0 8 0 amappl8 128 364 0 305 3 0 3 3 0 8 1 amappl7 120 267 0 260 1 0 1 1 0 8 0 amappl6 112 132 0 117 1 0 1 1 0 8 0 amappl5 104 696 0 681 1 0 1 1 0 8 0 amappl4 96 308 0 276 1 0 1 1 0 8 0 amappl3 88 91 0 84 1 0 1 1 0 8 0 amappl2 80 3913 0 3838 3 1 2 3 0 8 0 amappl1 72 28032 0 27569 24 14 10 19 0 8 0 amappl 80 1735 0 1648 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 12 0 3 1 0 1 1 0 8 0 uaddrrnd 24 629 0 610 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 629 0 610 1 0 1 1 0 8 0 vmmpekpl 168 8359 0 8320 2 0 2 2 0 8 0 vmmpepl 168 87004 0 84792 152 16 136 136 0 357 39 vmsppl 368 628 0 610 2 0 2 2 0 8 0 pdppl 4096 1265 0 1222 6 0 6 6 0 8 0 pvpl 32 236439 0 219242 186 0 186 186 0 265 5 pmappl 232 628 0 610 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 281 0 6 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace m_copyback(ffff800021f11f70,138,0,ffff800021f12134,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800021f11f70,138,0,ffff800021f12134,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044940,ffff800021f12218,fffffd806f29f700) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff800021f12318,0,ffff800000b19530,0,ffffffff82879b30,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000adc000,ffff800021f125e8) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff800021f125e8,ffff800021f125f4,29,0,ffff800000adc000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000adc000,fffffd806f29f700) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d01,ffff800021f128d8,ffff800020f0d000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff800021f12730) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806fcde5b8,ffff800021f128d8,11,fffffd807f7bf8a0) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd8068212738,ffff800021f128d8,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff80002310e028,f0,ffff800021f128d8,0,ffff800021f129c0) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff80002310e028,ffff800021f12970,ffff800021f129c0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800021f12a40) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021f12a40) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbf50fe94840, 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 __mp_lock(ffffffff8289f7d0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff8289f7d0) at __mp_lock+0x122 sys/kern/kern_lock.c:147 pageflttrap(ffff800021f99f50,1) at pageflttrap+0x7a sys/arch/amd64/amd64/trap.c:180 usertrap(ffff800021f99f50) at usertrap+0x219 sys/arch/amd64/amd64/trap.c:384 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffd1e90, count: -7