uvm_fault(0xffffffff8277aa10, 0xffffffff82694da0, 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, 0xffffffff82694da0, 0, 2) -> e m_copyback(ffff800021aec8b0,138,0,ffff800021aeca74,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800021aec8b0,138,0,ffff800021aeca74,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 end trace frame: 0xffff800021aecb30, count: 0 ddb{0}> trace m_copyback(ffff800021aec8b0,138,0,ffff800021aeca74,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800021aec8b0,138,0,ffff800021aeca74,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044940,ffff800021aecb58,fffffd807f00d600) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff800021aecc58,0,ffff800000ac2a78,0,ffffffff82879b30,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b84000,ffff800021aecf28) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff800021aecf28,ffff800021aecf34,29,0,ffff800000b84000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b84000,fffffd807f00d600) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d00,ffff800021aed218,ffff800021b09000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff800021aed070) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd8069958688,ffff800021aed218,11,fffffd807f7bf6c0) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd806fc0c130,ffff800021aed218,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff8000241ab3f0,f0,ffff800021aed218,0,ffff800021aed300) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff8000241ab3f0,ffff800021aed2b0,ffff800021aed300) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800021aed380) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021aed380) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc3546d66ec0, count: -14 ddb{0}> show registers rdi 0 rsi 0x8aea3 acpi_pdirpa+0x76d0b rbp 0xffff800021aec890 rbx 0xffffffffffffc66b rdx 0x8aea2 acpi_pdirpa+0x76d0a rcx 0xffffffff826b1a40 mbstat_boot_boot_cpumem rax 0 r8 0x2 r9 0xffffffff81e7a848 pf_translate_a+0x1a8 r10 0x1 r11 0xed0641a36dfd6059 r12 0xfffffd806870ec00 r13 0x108 r14 0x30 r15 0xffff800021aeca90 rip 0xffffffff81142cf9 m_copyback+0x119 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021aec7d0 ss 0x10 m_copyback+0x119: addq $0x1,0x8(%rcx,%rbx,8) ddb{0}> show proc PROC (syz-executor.0) pid=114733 stat=onproc flags process=0 proc=4000000 pri=81, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff8000241aaa10,0xffff8000241aa7a8 process=0xffff800020e007f0 user=0xffff800021ae8000, vmspace=0xfffffd8063db7a28 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 84254 78989 87333 0 3 0x80 nanosleep syz-executor.0 *84254 114733 87333 0 7 0x4000000 syz-executor.0 84254 155844 87333 0 3 0x4000080 fsleep syz-executor.0 87333 511506 28149 0 3 0x82 nanosleep syz-executor.0 16071 121908 1 0 3 0x100083 ttyin getty 37379 316959 0 0 3 0x14200 bored sosplice 20677 397505 28149 0 3 0x82 piperd syz-executor.1 51799 352174 0 0 3 0x14200 acct acct 25681 446136 0 0 3 0x14280 nfsidl nfsio 20874 81942 0 0 3 0x14280 nfsidl nfsio 17891 362823 0 0 3 0x14280 nfsidl nfsio 2232 177518 0 0 3 0x14280 nfsidl nfsio 65155 72735 0 0 3 0x14280 nfsidl nfsio 78292 164292 0 0 3 0x14280 nfsidl nfsio 12963 310051 0 0 3 0x14280 nfsidl nfsio 20275 107899 0 0 3 0x14280 nfsidl nfsio 43676 481148 0 0 3 0x14280 nfsidl nfsio 27203 358525 0 0 3 0x14280 nfsidl nfsio 13961 403657 0 0 3 0x14280 nfsidl nfsio 44998 60622 0 0 3 0x14280 nfsidl nfsio 39175 342882 0 0 3 0x14280 nfsidl nfsio 64518 209094 0 0 3 0x14280 nfsidl nfsio 75733 467824 0 0 3 0x14280 nfsidl nfsio 34237 313476 0 0 3 0x14280 nfsidl nfsio 9586 200475 0 0 3 0x14280 nfsidl nfsio 26198 362924 0 0 3 0x14280 nfsidl nfsio 91057 58325 0 0 3 0x14280 nfsidl nfsio 46074 348616 0 0 3 0x14280 nfsidl nfsio 28149 416640 26032 0 7 0x2 syz-fuzzer 28149 196336 26032 0 3 0x4000082 nanosleep syz-fuzzer 28149 244130 26032 0 3 0x4000082 kqread syz-fuzzer 28149 124501 26032 0 3 0x4000082 thrsleep syz-fuzzer 28149 440240 26032 0 3 0x4000082 thrsleep syz-fuzzer 28149 26062 26032 0 3 0x4000082 thrsleep syz-fuzzer 28149 486669 26032 0 3 0x4000082 thrsleep syz-fuzzer 28149 451689 26032 0 3 0x4000082 thrsleep syz-fuzzer 26032 286313 97088 0 3 0x10008a pause ksh 97088 256710 37296 0 3 0x92 select sshd 37296 64576 1 0 3 0x80 select sshd 85167 373505 76121 74 3 0x100092 bpf pflogd 76121 183867 1 0 3 0x80 netio pflogd 30614 213256 9008 73 3 0x100090 kqread syslogd 9008 3793 1 0 3 0x100082 netio syslogd 6058 252680 1 77 3 0x100090 poll dhclient 10928 317757 1 0 3 0x80 poll dhclient 18132 458732 0 0 3 0x14200 bored smr 37516 500086 0 0 3 0x14200 pgzero zerothread 51455 387530 0 0 3 0x14200 aiodoned aiodoned 70535 47009 0 0 3 0x14200 syncer update 78470 394994 0 0 3 0x14200 cleaner cleaner 90419 108913 0 0 3 0x14200 reaper reaper 77150 191709 0 0 3 0x14200 pgdaemon pagedaemon 7157 520384 0 0 3 0x14200 bored crynlk 46094 291789 0 0 3 0x14200 bored crypto 88491 123656 0 0 3 0x40014200 acpi0 acpi0 27626 360267 0 0 3 0x40014200 idle1 43011 270133 0 0 3 0x14200 bored softnet 67147 511583 0 0 3 0x14200 bored systqmp 25793 135395 0 0 3 0x14200 bored systq 19293 413682 0 0 3 0x40014200 bored softclock 54154 390556 0 0 3 0x40014200 idle0 1 229774 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 84254 (syz-executor.0) thread 0xffff8000241ab3f0 (114733) 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 9542 6456K 7255K 78643K 13646 0 pcb 13 8K 8K 78643K 206 0 rtable 122 10K 14K 78643K 1074 0 ifaddr 93 18K 19K 78643K 322 0 sysctl 2 0K 0K 78643K 4 0 counters 43 33K 34K 78643K 103 0 ioctlops 0 0K 4K 78643K 1758 0 iov 0 0K 16K 78643K 167 0 mount 1 1K 1K 78643K 1 0 vnodes 1217 76K 77K 78643K 2229 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 32 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 556 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 1834 0 sigio 0 0K 0K 78643K 17 0 proc 62 63K 95K 78643K 826 0 subproc 32 2K 2K 78643K 136 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 150 0 in_multi 25 1K 2K 78643K 270 0 ether_multi 1 0K 0K 78643K 27 0 mrt 1 0K 0K 78643K 9 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 61 281K 281K 78643K 61 0 exec 0 0K 2K 78643K 603 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 180 143K 143K 78643K 6609 0 UVM aobj 87 8K 8K 78643K 104 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 142 0 NDP 15 0K 0K 78643K 77 0 temp 156 3991K 4055K 78643K 29804 0 kqueue 3 4K 22K 78643K 56 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 25 0 21 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 115 0 113 1 0 1 1 0 8 0 rtentry 112 186 0 151 2 0 2 2 0 8 0 unpcb 120 3707 0 3697 3 2 1 2 0 8 0 syncache 272 11 0 11 5 5 0 1 0 8 0 tcpqe 32 1171 0 1171 2 2 0 1 0 8 0 tcpcb 592 486 0 482 6 5 1 2 0 8 0 inpcb 296 1704 0 1697 11 9 2 2 0 8 1 rttmr 72 2 0 2 2 2 0 1 0 8 0 nd6 48 54 0 52 1 0 1 1 0 8 0 pkpcb 40 10 0 10 3 2 1 1 0 8 1 ppxss 1136 4 0 4 4 3 1 1 0 8 1 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 6 0 6 3 3 0 1 0 482 0 pffrnode 88 6 0 6 3 3 0 1 0 8 0 pffrent 40 143 0 143 3 3 0 1 0 8 0 pfosfp 40 847 0 847 5 3 2 5 0 8 2 pfosfpen 112 1430 0 1430 21 3 18 21 0 8 18 pfrktable 1344 110 0 98 6 4 2 2 0 8 0 pftag 88 5 0 2 1 0 1 1 0 8 0 pfqueue 264 2 0 0 1 0 1 1 0 8 0 pfstitem 24 36 0 34 1 0 1 1 0 8 0 pfstkey 112 38 0 36 1 0 1 1 0 8 0 pfstate 328 37 0 35 3 2 1 3 0 8 0 pfsrctr 152 278 0 272 3 2 1 2 0 8 0 pfrule 1360 68 0 48 3 1 2 2 0 8 0 art_heap8 4096 3 0 1 3 1 2 3 0 8 0 art_heap4 256 917 0 737 21 6 15 16 0 8 3 art_table 32 920 0 738 2 0 2 2 0 8 0 art_node 16 185 0 152 1 0 1 1 0 8 0 sysvmsgpl 40 53 0 29 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 554 0 544 1 0 1 1 0 8 0 shmpl 112 101 0 17 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3663 0 2266 88 0 88 88 0 8 0 ffsino 272 3663 0 2266 95 1 94 94 0 8 0 nchpl 144 6855 0 5261 60 0 60 60 0 8 0 uvmvnodes 72 4516 0 0 83 0 83 83 0 8 0 vnodes 208 4516 0 0 238 0 238 238 0 8 0 namei 1024 19354 0 19354 6 5 1 1 0 8 1 percpumem 16 62 0 30 1 0 1 1 0 8 0 vcpupl 1984 14 0 0 2 0 2 2 0 8 0 vmpool 560 28 0 14 3 2 1 1 0 8 0 pfiaddrpl 120 39 0 32 1 0 1 1 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 200 19961 0 19961 12 11 1 7 0 8 1 plimitpl 152 123 0 115 1 0 1 1 0 8 0 sigapl 424 2054 0 2001 9 2 7 7 0 8 0 futexpl 56 29015 0 29014 5 4 1 1 0 8 0 knotepl 112 301 0 281 3 2 1 2 0 8 0 kqueuepl 152 214 0 210 1 0 1 1 0 8 0 pipepl 304 318 0 307 2 0 2 2 0 8 0 fdescpl 496 2017 0 2001 3 0 3 3 0 8 0 filepl 152 14032 0 13928 9 4 5 6 0 8 0 lockfpl 104 421 0 420 1 0 1 1 0 8 0 lockfspl 48 137 0 136 1 0 1 1 0 8 0 sessionpl 120 25 0 14 1 0 1 1 0 8 0 pgrppl 48 154 0 143 1 0 1 1 0 8 0 ucredpl 96 1424 0 1415 1 0 1 1 0 8 0 zombiepl 144 2001 0 2001 4 3 1 1 0 8 1 processpl 1008 2054 0 2001 7 0 7 7 0 8 0 procpl 632 5790 0 5728 7 1 6 6 0 8 0 srpgc 72 8 0 8 4 4 0 1 0 8 0 sosppl 144 15 0 15 5 4 1 1 0 8 1 sockpl 400 5547 0 5528 19 15 4 5 0 8 2 mcl64k 65536 15 0 0 2 0 2 2 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 21 0 0 2 0 2 2 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 7 0 0 1 0 1 1 0 8 0 mcl4k 4096 11 0 0 2 0 2 2 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 269 0 0 33 1 32 33 0 8 0 mtagpl 96 42 0 0 1 0 1 1 0 8 0 mbufpl 256 386 0 0 20 0 20 20 0 8 0 bufpl 280 7006 0 748 448 0 448 448 0 8 0 anonpl 16 232525 0 214304 123 35 88 91 0 124 11 amapchunkpl 152 11468 0 11125 28 13 15 19 0 158 0 amappl16 192 8008 0 7175 86 38 48 54 0 8 6 amappl15 184 330 0 326 1 0 1 1 0 8 0 amappl14 176 239 0 234 1 0 1 1 0 8 0 amappl13 168 558 0 555 1 0 1 1 0 8 0 amappl12 160 205 0 199 1 0 1 1 0 8 0 amappl11 152 385 0 370 1 0 1 1 0 8 0 amappl10 144 11 0 7 1 0 1 1 0 8 0 amappl9 136 530 0 530 3 3 0 1 0 8 0 amappl8 128 422 0 371 2 0 2 2 0 8 0 amappl7 120 333 0 325 1 0 1 1 0 8 0 amappl6 112 474 0 459 1 0 1 1 0 8 0 amappl5 104 1682 0 1667 1 0 1 1 0 8 0 amappl4 96 862 0 826 1 0 1 1 0 8 0 amappl3 88 855 0 848 1 0 1 1 0 8 0 amappl2 80 13790 0 13715 3 1 2 3 0 8 0 amappl1 72 73668 0 73193 24 14 10 19 0 8 0 amappl 80 6186 0 6084 4 1 3 3 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 64 103 0 17 2 0 2 2 0 8 0 uaddrrnd 24 2045 0 2015 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2045 0 2015 1 0 1 1 0 8 0 vmmpekpl 168 16554 0 16501 3 0 3 3 0 8 0 vmmpepl 168 271716 0 269590 244 143 101 139 0 357 2 vmsppl 368 2044 0 2015 4 1 3 3 0 8 0 pdppl 4096 4097 0 4044 10 3 7 7 0 8 0 pvpl 32 682945 0 661460 297 84 213 216 0 265 31 pmappl 232 2044 0 2015 5 3 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 318 0 41 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace m_copyback(ffff800021aec8b0,138,0,ffff800021aeca74,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800021aec8b0,138,0,ffff800021aeca74,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044940,ffff800021aecb58,fffffd807f00d600) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff800021aecc58,0,ffff800000ac2a78,0,ffffffff82879b30,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b84000,ffff800021aecf28) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff800021aecf28,ffff800021aecf34,29,0,ffff800000b84000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b84000,fffffd807f00d600) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d00,ffff800021aed218,ffff800021b09000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff800021aed070) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd8069958688,ffff800021aed218,11,fffffd807f7bf6c0) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd806fc0c130,ffff800021aed218,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff8000241ab3f0,f0,ffff800021aed218,0,ffff800021aed300) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff8000241ab3f0,ffff800021aed2b0,ffff800021aed300) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800021aed380) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021aed380) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc3546d66ec0, 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: 0xc000784db8, count: -3