uvm_fault(0xffffffff828acf98, 0xffffffff8267b2b8, 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(0xffffffff828acf98, 0xffffffff8267b2b8, 0, 2) -> e m_copyback(ffff80002129c6e0,138,0,ffff80002129c8a4,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff80002129c6e0,138,0,ffff80002129c8a4,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 end trace frame: 0xffff80002129c960, count: 0 ddb{0}> trace m_copyback(ffff80002129c6e0,138,0,ffff80002129c8a4,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff80002129c6e0,138,0,ffff80002129c8a4,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff8000000449c0,ffff80002129c988,fffffd806506df00) at pflog_mtap+0x446 sys/net/if_pflog.c:390 pflog_packet(ffff80002129ca88,0,ffff800000ac9fe8,0,ffffffff828c8308,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b1f800,ffff80002129cd58) at pf_test+0xfd2 sys/net/pf.c:7228 ip6_input_if(ffff80002129cd58,ffff80002129cd64,29,0,ffff800000b1f800) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b1f800,fffffd806506df00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d00,ffff80002129d048,ffff8000244d4000,2) at tun_dev_write+0x204 sys/net/if_tun.c:867 spec_write(ffff80002129cea0) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806e881088,ffff80002129d048,11,fffffd807f7b77e0) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:274 vn_write(fffffd8067eb6868,ffff80002129d048,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff80002123c540,f0,ffff80002129d048,0,ffff80002129d130) at dofilewritev+0x1ab sys/kern/sys_generic.c:379 sys_write(ffff80002123c540,ffff80002129d0e0,ffff80002129d130) at sys_write+0x83 sys/kern/sys_generic.c:299 syscall(ffff80002129d1b0) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002129d1b0) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x50736c8ebe0, count: -14 ddb{0}> show registers rdi 0 rsi 0xa2b65 acpi_pdirpa+0x8e9cd rbp 0xffff80002129c6c0 rbx 0xffffffffffff8d2e rdx 0xa2b64 acpi_pdirpa+0x8e9cc rcx 0xffffffff826b4940 mbstat_boot_boot_cpumem rax 0 r8 0x2 r9 0x1 r10 0x47b47a339f5e9526 r11 0xfd07d05b59bc5376 r12 0xfffffd8065074600 r13 0x108 r14 0x30 r15 0xffff80002129c8c0 rip 0xffffffff81139559 m_copyback+0x119 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002129c600 ss 0x10 m_copyback+0x119: addq $0x1,0x8(%rcx,%rbx,8) ddb{0}> show proc PROC (syz-executor.0) pid=61557 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff80002123cd20,0xffffffff828e9f48 process=0xffff800021237680 user=0xffff800021298000, vmspace=0xfffffd807effaa10 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 25794 281687 59516 0 7 0 syz-executor.0 *25794 61557 59516 0 7 0x4000000 syz-executor.0 59516 495967 76757 0 3 0x82 nanoslp syz-executor.0 46610 309914 0 0 3 0x14200 bored sosplice 64159 102695 1 0 3 0x100083 ttyin getty 36241 110484 76757 0 3 0x2 biowait syz-executor.1 76757 405995 2059 0 3 0x82 thrsleep syz-fuzzer 76757 205592 2059 0 3 0x4000082 nanoslp syz-fuzzer 76757 180503 2059 0 3 0x4000082 thrsleep syz-fuzzer 76757 26568 2059 0 3 0x4000082 thrsleep syz-fuzzer 76757 71748 2059 0 3 0x4000082 thrsleep syz-fuzzer 76757 336590 2059 0 3 0x4000082 kqread syz-fuzzer 76757 397790 2059 0 3 0x4000082 thrsleep syz-fuzzer 76757 486642 2059 0 3 0x4000082 nanoslp syz-fuzzer 2059 175739 68586 0 3 0x10008a sigsusp ksh 68586 96200 23957 0 3 0x92 kqread sshd 23957 435963 1 0 3 0x80 kqread sshd 48219 63461 7378 74 3 0x100092 bpf pflogd 7378 478214 1 0 3 0x80 netio pflogd 65535 106722 50733 73 3 0x100090 kqread syslogd 50733 204032 1 0 3 0x100082 netio syslogd 53407 21578 1 77 3 0x100090 poll dhclient 17295 149699 1 0 3 0x80 poll dhclient 54656 23536 0 0 3 0x14200 bored smr 72692 343142 0 0 2 0x14200 zerothread 89321 106736 0 0 3 0x14200 aiodoned aiodoned 48815 95790 0 0 3 0x14200 syncer update 48085 222734 0 0 3 0x14200 cleaner cleaner 18539 102045 0 0 3 0x14200 reaper reaper 18628 51984 0 0 3 0x14200 pgdaemon pagedaemon 171 432494 0 0 3 0x14200 bored crynlk 69145 957 0 0 3 0x14200 bored crypto 13777 111999 0 0 3 0x14200 bored viomb 9820 81815 0 0 3 0x40014200 acpi0 acpi0 38147 264793 0 0 3 0x40014200 idle1 78623 258988 0 0 3 0x14200 bored softnet 74224 324480 0 0 3 0x14200 bored systqmp 44672 163541 0 0 3 0x14200 bored systq 98093 508259 0 0 3 0x40014200 bored softclock 6187 68140 0 0 3 0x40014200 idle0 1 403265 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 25794 (syz-executor.0) thread 0xffff80002123c540 (61557) exclusive rwlock netlock r = 0 (0xffffffff827347f0) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1176 #1 tun_dev_write+0x1f9 sys/net/if_tun.c:866 #2 spec_write+0xd4 sys/kern/spec_vnops.c:309 #3 VOP_WRITE+0xc6 sys/kern/vfs_vops.c:274 #4 vn_write+0x14e sys/kern/vfs_vnops.c:414 #5 dofilewritev+0x1ab sys/kern/sys_generic.c:379 #6 sys_write+0x83 sys/kern/sys_generic.c:299 #7 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #7 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 #8 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff828ba938) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1176 #1 vn_write+0x42 sys/kern/vfs_vnops.c:399 #2 dofilewritev+0x1ab sys/kern/sys_generic.c:379 #3 sys_write+0x83 sys/kern/sys_generic.c:299 #4 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #4 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 #5 Xsyscall+0x128 Process 36241 (syz-executor.1) thread 0xffff80002123dce0 (110484) exclusive rrwlock inode r = 0 (0xfffffd806638e4e0) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1176 #1 rw_enter+0x446 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 ufs_ihashins+0x45 sys/ufs/ufs/ufs_ihash.c:140 #4 ffs_vget+0x135 sys/ufs/ffs/ffs_vfsops.c:1350 #5 ffs_inode_alloc+0x1e1 sys/ufs/ffs/ffs_alloc.c:394 #6 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162 #7 VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:459 #8 domkdirat+0x121 sys/kern/vfs_syscalls.c:3064 #9 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #9 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 #10 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd807bbc2098) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1176 #1 rw_enter+0x446 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:614 #4 vn_lock+0x6c sys/kern/vfs_vnops.c:575 #5 vfs_lookup+0xe6 sys/kern/vfs_lookup.c:419 #6 namei+0x5f7 sys/kern/vfs_lookup.c:249 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3049 #8 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9510 6426K 7331K 78643K 13165 0 pcb 13 8K 8K 78643K 93 0 rtable 110 3K 4K 78643K 418 0 ifaddr 58 12K 13K 78643K 137 0 sysctl 2 0K 0K 78643K 2 0 counters 44 34K 34K 78643K 76 0 ioctlops 0 0K 4K 78643K 1525 0 iov 0 0K 16K 78643K 69 0 mount 1 1K 1K 78643K 1 0 vnodes 1224 77K 77K 78643K 2104 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 9 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 92 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 5 13K 25K 78643K 2350 0 proc 62 63K 95K 78643K 583 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 88 0 in_multi 33 2K 2K 78643K 96 0 ether_multi 1 0K 0K 78643K 31 0 mrt 0 0K 0K 78643K 42 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 55 254K 254K 78643K 55 0 exec 0 0K 2K 78643K 445 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 164 63K 63K 78643K 6467 0 UVM aobj 30 2K 2K 78643K 30 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 104 0 NDP 9 0K 0K 78643K 31 0 temp 120 3982K 4046K 78643K 18010 0 kqueue 5 8K 16K 78643K 96 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 120 78 0 76 1 0 1 1 0 8 0 rtentry 112 68 0 23 2 0 2 2 0 8 0 unpcb 120 438 0 428 2 1 1 2 0 8 0 syncache 296 10 0 10 2 2 0 1 0 8 0 tcpqe 32 83 0 83 2 2 0 1 0 8 0 tcpcb 736 243 0 236 6 3 3 3 0 8 0 inpcb 296 728 0 718 4 2 2 2 0 8 1 rttmr 72 11 0 11 2 2 0 1 0 8 0 nd6 48 10 0 3 1 0 1 1 0 8 0 kcovpl 48 3 0 1 1 0 1 1 0 8 0 ppxss 1128 6 0 6 2 1 1 1 0 8 1 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 2 0 1 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 42 0 17 1 0 1 1 0 8 0 pfstkey 112 42 0 17 1 0 1 1 0 8 0 pfstate 328 41 0 16 4 1 3 3 0 8 0 pfrule 1360 28 0 21 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 238 0 44 13 0 13 13 0 8 0 art_table 32 239 0 44 2 0 2 2 0 8 0 art_node 16 67 0 26 1 0 1 1 0 8 0 sysvmsgpl 40 28 0 2 1 0 1 1 0 8 0 semapl 112 89 0 79 1 0 1 1 0 8 0 shmpl 112 27 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 4132 0 2735 90 2 88 89 0 8 0 ffsino 272 4132 0 2735 95 0 95 95 0 8 0 nchpl 144 6897 0 5305 60 0 60 60 0 8 0 uvmvnodes 72 4913 0 0 90 0 90 90 0 8 0 vnodes 224 4913 0 0 289 0 289 289 0 8 0 namei 1024 17295 0 17294 1 0 1 1 0 8 0 percpumem 16 49 0 16 1 0 1 1 0 8 0 vcpupl 1984 4 0 0 1 0 1 1 0 8 0 vmpool 560 4 0 0 1 0 1 1 0 8 0 scsiplug 72 11 0 11 1 1 0 1 0 8 0 scxspl 216 20625 0 20624 12 11 1 8 0 8 0 plimitpl 152 132 0 124 1 0 1 1 0 8 0 sigapl 424 2567 0 2534 4 0 4 4 0 8 0 futexpl 56 14099 0 14099 1 0 1 1 0 8 1 knotepl 112 26187 0 26161 2 1 1 2 0 8 0 kqueuepl 168 1200 0 1196 1 0 1 1 0 8 0 pipepl 336 149 0 138 5 3 2 2 0 8 1 fdescpl 496 2548 0 2532 3 0 3 3 0 8 0 filepl 152 8181 0 8079 6 1 5 6 0 8 1 lockfpl 104 180 0 179 1 0 1 1 0 8 0 lockfspl 48 73 0 72 1 0 1 1 0 8 0 sessionpl 144 20 0 9 1 0 1 1 0 8 0 pgrppl 48 22 0 11 1 0 1 1 0 8 0 ucredpl 96 903 0 894 1 0 1 1 0 8 0 zombiepl 144 2534 0 2534 1 0 1 1 0 8 1 processpl 1072 2567 0 2534 3 0 3 3 0 8 0 procpl 672 5610 0 5569 4 0 4 4 0 8 0 sosppl 168 29 0 26 2 1 1 1 0 8 0 sockpl 432 1246 0 1224 9 5 4 6 0 8 1 mcl64k 65536 11 0 0 2 0 2 2 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 11 0 0 2 0 2 2 0 8 0 mcl4k 4096 7 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 180 0 0 19 0 19 19 0 8 0 mtagpl 96 166 0 0 5 0 5 5 0 8 0 mbufpl 256 958 0 0 58 0 58 58 0 8 0 bufpl 280 6340 0 183 440 0 440 440 0 8 0 anonpl 16 262150 0 247402 104 41 63 91 0 124 0 amapchunkpl 152 11302 0 10936 32 17 15 28 0 158 0 amappl16 192 11644 0 11073 79 50 29 53 0 8 0 amappl15 184 4 0 2 1 0 1 1 0 8 0 amappl14 176 23 0 19 1 0 1 1 0 8 0 amappl13 168 34 0 32 1 0 1 1 0 8 0 amappl12 160 12 0 7 1 0 1 1 0 8 0 amappl11 152 329 0 310 1 0 1 1 0 8 0 amappl10 144 2066 0 2060 1 0 1 1 0 8 0 amappl9 136 285 0 285 1 1 0 1 0 8 0 amappl8 128 183 0 129 2 0 2 2 0 8 0 amappl7 120 259 0 251 1 0 1 1 0 8 0 amappl6 112 2123 0 2108 1 0 1 1 0 8 0 amappl5 104 2707 0 2687 1 0 1 1 0 8 0 amappl4 96 559 0 530 1 0 1 1 0 8 0 amappl3 88 170 0 162 1 0 1 1 0 8 0 amappl2 80 19518 0 19449 2 0 2 2 0 8 0 amappl1 72 79894 0 79424 24 14 10 19 0 8 0 amappl 80 5941 0 5853 2 0 2 2 0 84 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 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 29 0 0 1 0 1 1 0 8 0 uaddrrnd 24 2552 0 2532 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2552 0 2532 1 0 1 1 0 8 0 vmmpekpl 168 16730 0 16701 2 0 2 2 0 8 0 vmmpepl 168 328403 0 326571 137 43 94 105 0 357 7 vmsppl 368 2551 0 2532 2 0 2 2 0 8 0 pdppl 4096 5111 0 5068 62 17 45 46 0 8 2 pvpl 32 1021068 0 1003579 223 55 168 211 0 265 19 pmappl 232 2551 0 2532 3 1 2 2 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 365 0 28 10 0 10 10 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace m_copyback(ffff80002129c6e0,138,0,ffff80002129c8a4,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff80002129c6e0,138,0,ffff80002129c8a4,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff8000000449c0,ffff80002129c988,fffffd806506df00) at pflog_mtap+0x446 sys/net/if_pflog.c:390 pflog_packet(ffff80002129ca88,0,ffff800000ac9fe8,0,ffffffff828c8308,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b1f800,ffff80002129cd58) at pf_test+0xfd2 sys/net/pf.c:7228 ip6_input_if(ffff80002129cd58,ffff80002129cd64,29,0,ffff800000b1f800) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b1f800,fffffd806506df00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d00,ffff80002129d048,ffff8000244d4000,2) at tun_dev_write+0x204 sys/net/if_tun.c:867 spec_write(ffff80002129cea0) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806e881088,ffff80002129d048,11,fffffd807f7b77e0) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:274 vn_write(fffffd8067eb6868,ffff80002129d048,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff80002123c540,f0,ffff80002129d048,0,ffff80002129d130) at dofilewritev+0x1ab sys/kern/sys_generic.c:379 sys_write(ffff80002123c540,ffff80002129d0e0,ffff80002129d130) at sys_write+0x83 sys/kern/sys_generic.c:299 syscall(ffff80002129d1b0) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002129d1b0) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x50736c8ebe0, count: -14 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d68ff0) 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: 0x7f7ffffeab30, count: -3