uvm_fault(0xffffffff8277aa10, 0xffffffff8269aac8, 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, 0xffffffff8269aac8, 0, 2) -> e m_copyback(ffff800021f425a0,138,0,ffff800021f42764,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800021f425a0,138,0,ffff800021f42764,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 end trace frame: 0xffff800021f42820, count: 0 ddb{0}> trace m_copyback(ffff800021f425a0,138,0,ffff800021f42764,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800021f425a0,138,0,ffff800021f42764,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044a00,ffff800021f42848,fffffd806f0f7700) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff800021f42948,0,ffff800000ac0a98,0,ffffffff82879b30,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000adc000,ffff800021f42c18) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff800021f42c18,ffff800021f42c24,29,0,ffff800000adc000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000adc000,fffffd806f0f7700) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d00,ffff800021f42f08,ffff800020eed000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff800021f42d60) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806e3558f8,ffff800021f42f08,11,fffffd807f7bf900) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd806ca9bdb8,ffff800021f42f08,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800020e4c518,f0,ffff800021f42f08,0,ffff800021f42ff0) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff800020e4c518,ffff800021f42fa0,ffff800021f42ff0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800021f43070) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021f43070) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x67aab4b2710, count: -14 ddb{0}> show registers rdi 0 rsi 0x6ed3b acpi_pdirpa+0x5aba3 rbp 0xffff800021f42580 rbx 0xffffffffffffd210 rdx 0x6ed3a acpi_pdirpa+0x5aba2 rcx 0xffffffff826b1a40 mbstat_boot_boot_cpumem rax 0 r8 0x2 r9 0xffffffff81e7a848 pf_translate_a+0x1a8 r10 0x1 r11 0x8d5062a9a6f6677b r12 0xfffffd806f0f7d00 r13 0x108 r14 0x30 r15 0xffff800021f42780 rip 0xffffffff81142cf9 m_copyback+0x119 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021f424c0 ss 0x10 m_copyback+0x119: addq $0x1,0x8(%rcx,%rbx,8) ddb{0}> show proc PROC (syz-executor.0) pid=442155 stat=onproc flags process=0 proc=4000000 pri=80, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff800020e4d3e8,0xffffffff82888178 process=0xffff800021f227e0 user=0xffff800021f3e000, vmspace=0xfffffd8063f86a28 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 11094 16290 377 0 2 0 syz-executor.0 *11094 442155 377 0 7 0x4000000 syz-executor.0 39280 80884 0 0 3 0x14280 nfsidl nfsio 37081 45161 0 0 3 0x14280 nfsidl nfsio 4442 335808 0 0 3 0x14280 nfsidl nfsio 19551 459072 0 0 3 0x14280 nfsidl nfsio 34601 307754 0 0 3 0x14280 nfsidl nfsio 18333 519955 0 0 3 0x14280 nfsidl nfsio 80824 222216 0 0 3 0x14280 nfsidl nfsio 12514 267368 0 0 3 0x14280 nfsidl nfsio 9037 54581 0 0 3 0x14280 nfsidl nfsio 41369 1154 0 0 3 0x14280 nfsidl nfsio 56258 517518 0 0 3 0x14280 nfsidl nfsio 73400 270685 0 0 3 0x14280 nfsidl nfsio 83890 430010 0 0 3 0x14280 nfsidl nfsio 89070 489274 0 0 3 0x14280 nfsidl nfsio 61434 500503 0 0 3 0x14280 nfsidl nfsio 54751 131619 0 0 3 0x14280 nfsidl nfsio 68554 507788 0 0 3 0x14280 nfsidl nfsio 6927 349379 0 0 3 0x14280 nfsidl nfsio 67889 121153 0 0 3 0x14280 nfsidl nfsio 17320 463011 0 0 3 0x14280 nfsidl nfsio 54584 418270 0 0 3 0x14200 bored sosplice 45551 45216 91986 0 3 0x82 piperd syz-executor.1 377 113981 91986 0 3 0x82 nanosleep syz-executor.0 91986 395989 98248 0 3 0x82 thrsleep syz-fuzzer 91986 119495 98248 0 3 0x4000082 nanosleep syz-fuzzer 91986 369840 98248 0 3 0x4000082 thrsleep syz-fuzzer 91986 288449 98248 0 3 0x4000082 kqread syz-fuzzer 91986 276819 98248 0 3 0x4000082 thrsleep syz-fuzzer 91986 345851 98248 0 3 0x4000082 thrsleep syz-fuzzer 91986 415066 98248 0 3 0x4000082 thrsleep syz-fuzzer 91986 239498 98248 0 7 0x4000002 syz-fuzzer 98248 345508 50623 0 3 0x10008a pause ksh 50623 474457 12725 0 3 0x92 select sshd 3822 18415 1 0 3 0x100083 ttyin getty 12725 89542 1 0 3 0x80 select sshd 31015 210120 1278 74 3 0x100092 bpf pflogd 1278 450244 1 0 3 0x80 netio pflogd 81555 520700 8908 73 3 0x100090 kqread syslogd 8908 506422 1 0 3 0x100082 netio syslogd 50895 474115 1 77 3 0x100090 poll dhclient 87933 479164 1 0 3 0x80 poll dhclient 54471 258462 0 0 3 0x14200 bored smr 83987 457349 0 0 2 0x14200 zerothread 52044 153855 0 0 3 0x14200 aiodoned aiodoned 64151 330646 0 0 3 0x14200 syncer update 92816 330724 0 0 3 0x14200 cleaner cleaner 5821 290337 0 0 3 0x14200 reaper reaper 16961 183948 0 0 3 0x14200 pgdaemon pagedaemon 87958 350672 0 0 3 0x14200 bored crynlk 7145 453439 0 0 3 0x14200 bored crypto 92467 400457 0 0 3 0x40014200 acpi0 acpi0 6772 359283 0 0 3 0x40014200 idle1 52148 16375 0 0 3 0x14200 bored softnet 18199 372891 0 0 3 0x14200 bored systqmp 20869 328203 0 0 3 0x14200 bored systq 24176 434042 0 0 3 0x40014200 bored softclock 66712 57067 0 0 3 0x40014200 idle0 1 137016 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 11094 (syz-executor.0) thread 0xffff800020e4c518 (442155) 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 9505 6425K 6683K 78643K 11081 0 pcb 13 8K 8K 78643K 88 0 rtable 108 14K 17K 78643K 416 0 ifaddr 63 13K 13K 78643K 112 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 51 0 ioctlops 0 0K 4K 78643K 1620 0 iov 0 0K 16K 78643K 44 0 mount 1 1K 1K 78643K 1 0 vnodes 1220 77K 77K 78643K 1396 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 17 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 149 0 dirhash 9 1K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 794 0 sigio 0 0K 0K 78643K 5 0 proc 61 63K 95K 78643K 489 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 224 0 in_multi 25 1K 2K 78643K 191 0 ether_multi 1 0K 0K 78643K 12 0 mrt 1 0K 0K 78643K 11 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 2K 78643K 398 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 157 109K 115K 78643K 3309 0 UVM aobj 36 7K 7K 78643K 45 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 128 0 NDP 10 0K 0K 78643K 29 0 temp 131 3976K 4040K 78643K 10325 0 kqueue 3 4K 22K 78643K 26 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 6 0 0 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 42 0 40 1 0 1 1 0 8 0 rtentry 112 94 0 56 2 0 2 2 0 8 0 unpcb 120 287 0 276 1 0 1 1 0 8 0 syncache 272 9 0 9 4 4 0 1 0 8 0 tcpqe 32 73 0 73 2 2 0 1 0 8 0 tcpcb 592 631 0 623 5 3 2 4 0 8 1 inpcb 296 1264 0 1257 5 3 2 2 0 8 1 rttmr 72 3 0 3 2 2 0 1 0 8 0 nd6 48 23 0 21 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 pfstscr 40 4 0 4 1 1 0 1 0 8 0 pffrag 232 3 0 2 2 1 1 1 0 482 0 pffrnode 88 3 0 2 2 1 1 1 0 8 0 pffrent 40 49 0 48 2 1 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 30 0 25 2 1 1 1 0 8 0 pfstitem 24 23 0 21 1 0 1 1 0 8 0 pfstkey 112 25 0 23 1 0 1 1 0 8 0 pfstate 328 23 0 21 2 1 1 2 0 8 0 pfsrctr 152 6 0 6 2 2 0 1 0 8 0 pfrule 1360 39 0 30 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 431 0 276 15 2 13 13 0 8 0 art_table 32 432 0 276 2 0 2 2 0 8 0 art_node 16 93 0 57 1 0 1 1 0 8 0 sysvmsgpl 40 52 0 12 2 1 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 141 0 131 1 0 1 1 0 8 0 shmpl 112 42 0 10 1 0 1 1 0 8 0 dirhash 1024 17 0 10 3 1 2 3 0 8 0 dino2pl 256 2651 0 1249 89 0 89 89 0 8 0 ffsino 272 2651 0 1249 94 0 94 94 0 8 0 nchpl 144 3964 0 2357 60 0 60 60 0 8 0 uvmvnodes 72 2806 0 0 52 0 52 52 0 8 0 vnodes 208 2806 0 0 148 0 148 148 0 8 0 namei 1024 10930 0 10930 1 0 1 1 0 8 1 percpumem 16 36 0 4 1 0 1 1 0 8 0 vcpupl 1984 11 0 0 2 0 2 2 0 8 0 vmpool 560 16 0 5 1 0 1 1 0 8 0 pfiaddrpl 120 10 0 7 2 1 1 1 0 8 0 scxspl 200 12100 0 12100 10 9 1 7 0 8 1 plimitpl 152 53 0 45 1 0 1 1 0 8 0 sigapl 424 1030 0 978 6 0 6 6 0 8 0 futexpl 56 12441 0 12441 1 0 1 1 0 8 1 knotepl 112 105 0 85 2 1 1 2 0 8 0 kqueuepl 152 84 0 82 1 0 1 1 0 8 0 pipepl 304 172 0 161 5 4 1 2 0 8 0 fdescpl 496 994 0 978 3 0 3 3 0 8 0 filepl 152 5613 0 5511 5 0 5 5 0 8 1 lockfpl 104 120 0 119 1 0 1 1 0 8 0 lockfspl 48 50 0 49 1 0 1 1 0 8 0 sessionpl 120 18 0 7 1 0 1 1 0 8 0 pgrppl 48 26 0 15 1 0 1 1 0 8 0 ucredpl 96 580 0 571 1 0 1 1 0 8 0 zombiepl 144 978 0 978 1 0 1 1 0 8 1 processpl 1008 1030 0 978 7 0 7 7 0 8 0 procpl 632 2584 0 2524 6 0 6 6 0 8 0 sosppl 144 14 0 14 5 4 1 1 0 8 1 sockpl 400 1596 0 1576 5 2 3 4 0 8 0 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 7 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 16 0 0 2 0 2 2 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 170 0 0 21 0 21 21 0 8 1 mtagpl 96 17 0 0 1 0 1 1 0 8 0 mbufpl 256 362 0 0 22 0 22 22 0 8 0 bufpl 280 5086 0 188 350 0 350 350 0 8 0 anonpl 16 123443 0 104811 122 44 78 90 0 124 0 amapchunkpl 152 5858 0 5554 30 14 16 17 0 158 3 amappl16 192 4717 0 3856 82 37 45 54 0 8 0 amappl15 184 9 0 7 1 0 1 1 0 8 0 amappl14 176 25 0 19 1 0 1 1 0 8 0 amappl13 168 28 0 26 1 0 1 1 0 8 0 amappl12 160 9 0 5 2 1 1 1 0 8 0 amappl11 152 52 0 37 1 0 1 1 0 8 0 amappl10 144 12 0 7 1 0 1 1 0 8 0 amappl9 136 971 0 967 1 0 1 1 0 8 0 amappl8 128 732 0 695 2 0 2 2 0 8 0 amappl7 120 255 0 248 1 0 1 1 0 8 0 amappl6 112 120 0 106 1 0 1 1 0 8 0 amappl5 104 1067 0 1053 1 0 1 1 0 8 0 amappl4 96 303 0 278 1 0 1 1 0 8 0 amappl3 88 97 0 88 1 0 1 1 0 8 0 amappl2 80 6389 0 6317 3 1 2 3 0 8 0 amappl1 72 39582 0 39116 24 14 10 19 0 8 0 amappl 80 2860 0 2772 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 44 0 9 1 0 1 1 0 8 0 uaddrrnd 24 1010 0 983 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1010 0 983 1 0 1 1 0 8 0 vmmpekpl 168 9938 0 9896 2 0 2 2 0 8 0 vmmpepl 168 133718 0 131621 128 34 94 108 0 357 0 vmsppl 368 1009 0 983 4 1 3 3 0 8 0 pdppl 4096 2027 0 1977 7 0 7 7 0 8 0 pvpl 32 359950 0 338501 239 51 188 211 0 265 14 pmappl 232 1009 0 983 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 275 0 13 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace m_copyback(ffff800021f425a0,138,0,ffff800021f42764,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800021f425a0,138,0,ffff800021f42764,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044a00,ffff800021f42848,fffffd806f0f7700) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff800021f42948,0,ffff800000ac0a98,0,ffffffff82879b30,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000adc000,ffff800021f42c18) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff800021f42c18,ffff800021f42c24,29,0,ffff800000adc000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000adc000,fffffd806f0f7700) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d00,ffff800021f42f08,ffff800020eed000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff800021f42d60) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806e3558f8,ffff800021f42f08,11,fffffd807f7bf900) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd806ca9bdb8,ffff800021f42f08,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800020e4c518,f0,ffff800021f42f08,0,ffff800021f42ff0) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff800020e4c518,ffff800021f42fa0,ffff800021f42ff0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800021f43070) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021f43070) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x67aab4b2710, 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: 0xc001e74778, count: -3