uvm_fault(0xffffffff8277aa10, 0xffffffff8267d918, 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, 0xffffffff8267d918, 0, 2) -> e m_copyback(ffff8000218e1950,158,0,ffff8000218e1b14,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff8000218e1950,158,0,ffff8000218e1b14,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 end trace frame: 0xffff8000218e1bd0, count: 0 ddb{0}> trace m_copyback(ffff8000218e1950,158,0,ffff8000218e1b14,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff8000218e1950,158,0,ffff8000218e1b14,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff8000000448c0,ffff8000218e1bf8,fffffd80681f7800) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff8000218e1cf8,0,ffff800000b63a80,0,ffffffff82879b30,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b4e000,ffff8000218e1fc8) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff8000218e1fc8,ffff8000218e1fd4,29,0,ffff800000b4e000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b4e000,fffffd80681f7800) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d01,ffff8000218e22b8,ffff8000212d7000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff8000218e2110) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806f0a7418,ffff8000218e22b8,11,fffffd807f7bf8a0) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd806ca737c8,ffff8000218e22b8,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800023fb5668,f0,ffff8000218e22b8,0,ffff8000218e23a0) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff800023fb5668,ffff8000218e2350,ffff8000218e23a0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff8000218e2420) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000218e2420) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x79292f20390, count: -14 ddb{0}> show registers rdi 0 rsi 0x6ee5b acpi_pdirpa+0x5acc3 rbp 0xffff8000218e1930 rbx 0xffffffffffff97da rdx 0x6ee5a acpi_pdirpa+0x5acc2 rcx 0xffffffff826b1a40 mbstat_boot_boot_cpumem rax 0 r8 0x2 r9 0xffffffff81e7a848 pf_translate_a+0x1a8 r10 0x1 r11 0x454e13f20f8b565c r12 0xfffffd8063eb7d00 r13 0x128 r14 0x30 r15 0xffff8000218e1b30 rip 0xffffffff81142cf9 m_copyback+0x119 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000218e1870 ss 0x10 m_copyback+0x119: addq $0x1,0x8(%rcx,%rbx,8) ddb{0}> show proc PROC (syz-executor.1) pid=5599 stat=onproc flags process=0 proc=4000000 pri=72, usrpri=72, nice=20 forw=0xffffffffffffffff, list=0xffff800023fb4030,0xffffffff82888178 process=0xffff800020ebf3b8 user=0xffff8000218dd000, vmspace=0xfffffd8063a80d00 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 11971 330594 44229 0 7 0 syz-executor.1 *11971 5599 44229 0 7 0x4000000 syz-executor.1 44229 134651 21538 0 3 0x82 nanosleep syz-executor.1 26716 126904 21538 0 3 0x82 nanosleep syz-executor.0 49829 18238 0 0 3 0x14280 nfsidl nfsio 84814 9755 0 0 3 0x14280 nfsidl nfsio 16246 234117 0 0 3 0x14280 nfsidl nfsio 97971 305333 0 0 3 0x14280 nfsidl nfsio 6466 170035 0 0 3 0x14280 nfsidl nfsio 51901 413795 0 0 3 0x14280 nfsidl nfsio 28492 115187 0 0 3 0x14280 nfsidl nfsio 13568 212794 0 0 3 0x14280 nfsidl nfsio 81988 373287 0 0 3 0x14280 nfsidl nfsio 54970 183457 0 0 3 0x14280 nfsidl nfsio 56808 167120 0 0 3 0x14280 nfsidl nfsio 15711 512773 0 0 3 0x14280 nfsidl nfsio 41810 341681 0 0 3 0x14280 nfsidl nfsio 29356 419100 0 0 3 0x14280 nfsidl nfsio 96511 106539 0 0 3 0x14280 nfsidl nfsio 28669 180293 0 0 3 0x14280 nfsidl nfsio 70467 464962 0 0 3 0x14280 nfsidl nfsio 64967 215668 0 0 3 0x14280 nfsidl nfsio 79103 170043 0 0 3 0x14280 nfsidl nfsio 11970 446400 0 0 3 0x14280 nfsidl nfsio 38518 271683 0 0 3 0x14200 acct acct 47392 144475 0 0 3 0x14200 bored sosplice 21538 439569 41333 0 3 0x82 thrsleep syz-fuzzer 21538 246047 41333 0 3 0x4000082 nanosleep syz-fuzzer 21538 104741 41333 0 3 0x4000082 thrsleep syz-fuzzer 21538 293171 41333 0 3 0x4000082 nanosleep syz-fuzzer 21538 262347 41333 0 3 0x4000082 thrsleep syz-fuzzer 21538 353542 41333 0 3 0x4000082 thrsleep syz-fuzzer 21538 208898 41333 0 3 0x4000082 kqread syz-fuzzer 21538 336480 41333 0 3 0x4000082 thrsleep syz-fuzzer 41333 7384 95965 0 3 0x10008a pause ksh 95965 476624 68977 0 3 0x92 select sshd 54263 144348 1 0 3 0x100083 ttyin getty 68977 107647 1 0 3 0x80 select sshd 53832 191883 30727 74 3 0x100092 bpf pflogd 30727 157203 1 0 3 0x80 netio pflogd 93778 293705 49812 73 3 0x100090 kqread syslogd 49812 10825 1 0 3 0x100082 netio syslogd 66578 32342 1 77 3 0x100090 poll dhclient 64211 200506 1 0 3 0x80 poll dhclient 29916 409237 0 0 3 0x14200 bored smr 82166 338085 0 0 2 0x14200 zerothread 75459 142253 0 0 3 0x14200 aiodoned aiodoned 14436 175586 0 0 3 0x14200 syncer update 66692 104648 0 0 3 0x14200 cleaner cleaner 69316 296309 0 0 3 0x14200 reaper reaper 60083 49908 0 0 3 0x14200 pgdaemon pagedaemon 2408 31117 0 0 3 0x14200 bored crynlk 20839 383841 0 0 3 0x14200 bored crypto 18750 177715 0 0 3 0x40014200 acpi0 acpi0 64395 259649 0 0 3 0x40014200 idle1 24466 112307 0 0 3 0x14200 bored softnet 33353 507483 0 0 3 0x14200 bored systqmp 16649 23866 0 0 3 0x14200 bored systq 94010 80410 0 0 3 0x40014200 bored softclock 73677 209461 0 0 3 0x40014200 idle0 1 352648 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 11971 (syz-executor.1) thread 0xffff800023fb5668 (5599) 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 9547 6872K 7259K 78643K 13212 0 pcb 13 8K 8K 78643K 123 0 rtable 98 5K 9K 78643K 542 0 ifaddr 70 14K 15K 78643K 174 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 71 0 ioctlops 0 0K 4K 78643K 1671 0 iov 0 0K 16K 78643K 90 0 mount 1 1K 1K 78643K 1 0 vnodes 1224 77K 77K 78643K 1925 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 15 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 265 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 972 0 sigio 0 0K 0K 78643K 71 0 proc 62 63K 95K 78643K 635 0 subproc 32 2K 2K 78643K 87 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 77 0 in_multi 30 2K 2K 78643K 102 0 ether_multi 1 0K 0K 78643K 14 0 mrt 0 0K 0K 78643K 10 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 43 201K 201K 78643K 43 0 exec 0 0K 2K 78643K 481 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 199 192K 192K 78643K 3869 0 UVM aobj 36 6K 6K 78643K 45 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 75 0 NDP 11 0K 0K 78643K 35 0 temp 137 3980K 4058K 78643K 10247 0 kqueue 3 4K 12K 78643K 32 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 12 0 6 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 64 0 62 1 0 1 1 0 8 0 rtentry 112 86 0 52 2 0 2 2 0 8 0 unpcb 120 598 0 588 1 0 1 1 0 8 0 syncache 272 10 0 10 3 3 0 1 0 8 0 tcpqe 32 110 0 110 1 1 0 1 0 8 0 tcpcb 592 244 0 239 3 2 1 2 0 8 0 inpcb 296 716 0 709 6 4 2 2 0 8 1 rttmr 72 3 0 3 2 2 0 1 0 8 0 nd6 48 19 0 12 1 0 1 1 0 8 0 pfstscr 40 7 0 7 3 2 1 1 0 8 1 pffrag 232 3 0 3 2 2 0 1 0 482 0 pffrnode 88 3 0 3 2 2 0 1 0 8 0 pffrent 40 51 0 51 3 2 1 1 0 8 1 pfosfp 40 847 0 423 5 0 5 5 0 8 0 pfosfpen 112 1430 0 714 21 0 21 21 0 8 0 pfrktable 1344 46 0 41 2 1 1 2 0 8 0 pfstitem 24 15 0 13 1 0 1 1 0 8 0 pfstkey 112 24 0 22 1 0 1 1 0 8 0 pfstate 328 19 0 17 2 1 1 2 0 8 0 pfsrctr 152 21 0 21 1 1 0 1 0 8 0 pfrule 1360 48 0 34 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 485 0 328 16 4 12 12 0 8 1 art_table 32 486 0 328 2 0 2 2 0 8 0 art_node 16 85 0 57 1 0 1 1 0 8 0 sysvmsgpl 40 29 0 16 1 0 1 1 0 8 0 semapl 112 263 0 253 1 0 1 1 0 8 0 shmpl 112 42 0 9 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2896 0 1489 89 0 89 89 0 8 0 ffsino 272 2896 0 1489 95 0 95 95 0 8 0 nchpl 144 4658 0 3065 60 0 60 60 0 8 0 uvmvnodes 72 3556 0 0 65 0 65 65 0 8 0 vnodes 208 3556 0 0 188 0 188 188 0 8 0 namei 1024 13450 0 13450 1 0 1 1 0 8 1 percpumem 16 46 0 14 1 0 1 1 0 8 0 vcpupl 1984 16 0 0 2 0 2 2 0 8 0 vmpool 560 21 0 5 2 0 2 2 0 8 0 pfiaddrpl 120 15 0 11 1 0 1 1 0 8 0 scxspl 200 14669 0 14669 10 9 1 7 0 8 1 plimitpl 152 70 0 62 1 0 1 1 0 8 0 sigapl 424 1200 0 1147 7 0 7 7 0 8 0 futexpl 56 13579 0 13579 1 0 1 1 0 8 1 knotepl 112 125 0 105 1 0 1 1 0 8 0 kqueuepl 152 92 0 88 1 0 1 1 0 8 0 pipepl 304 202 0 191 2 0 2 2 0 8 0 fdescpl 496 1163 0 1147 3 0 3 3 0 8 0 filepl 152 6986 0 6884 6 1 5 6 0 8 1 lockfpl 104 1001 0 1000 1 0 1 1 0 8 0 lockfspl 48 304 0 303 1 0 1 1 0 8 0 sessionpl 120 21 0 10 1 0 1 1 0 8 0 pgrppl 48 37 0 26 1 0 1 1 0 8 0 ucredpl 96 669 0 659 1 0 1 1 0 8 0 zombiepl 144 1147 0 1146 2 1 1 1 0 8 0 processpl 1008 1200 0 1146 7 0 7 7 0 8 0 procpl 632 3152 0 3090 7 1 6 6 0 8 0 sosppl 144 9 0 9 4 4 0 1 0 8 0 sockpl 400 1385 0 1366 9 5 4 5 0 8 2 mcl64k 65536 9 0 0 2 0 2 2 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 9 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 12 0 0 2 0 2 2 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 247 0 0 30 0 30 30 0 8 0 mtagpl 96 75 0 0 2 0 2 2 0 8 0 mbufpl 256 380 0 0 22 0 22 22 0 8 0 bufpl 280 5823 0 182 403 0 403 403 0 8 0 anonpl 16 133819 0 114852 85 8 77 82 0 124 0 amapchunkpl 152 7740 0 7396 46 19 27 28 0 158 13 amappl16 192 4191 0 3326 51 7 44 50 0 8 0 amappl15 184 576 0 572 1 0 1 1 0 8 0 amappl14 176 25 0 19 1 0 1 1 0 8 0 amappl13 168 363 0 361 1 0 1 1 0 8 0 amappl12 160 18 0 13 2 1 1 1 0 8 0 amappl11 152 63 0 48 1 0 1 1 0 8 0 amappl10 144 22 0 18 1 0 1 1 0 8 0 amappl9 136 368 0 367 1 0 1 1 0 8 0 amappl8 128 242 0 169 3 0 3 3 0 8 0 amappl7 120 292 0 285 1 0 1 1 0 8 0 amappl6 112 145 0 130 1 0 1 1 0 8 0 amappl5 104 1241 0 1226 1 0 1 1 0 8 0 amappl4 96 642 0 611 1 0 1 1 0 8 0 amappl3 88 108 0 101 1 0 1 1 0 8 0 amappl2 80 8003 0 7928 3 1 2 3 0 8 0 amappl1 72 46166 0 45697 24 14 10 19 0 8 0 amappl 80 3508 0 3405 3 0 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 44 0 9 1 0 1 1 0 8 0 uaddrrnd 24 1184 0 1152 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1184 0 1152 1 0 1 1 0 8 0 vmmpekpl 168 12438 0 12385 3 0 3 3 0 8 0 vmmpepl 168 157305 0 155137 155 42 113 127 0 357 14 vmsppl 368 1183 0 1152 3 0 3 3 0 8 0 pdppl 4096 2375 0 2320 8 0 8 8 0 8 0 pvpl 32 410142 0 387905 212 28 184 199 0 265 4 pmappl 232 1183 0 1152 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 291 0 15 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace m_copyback(ffff8000218e1950,158,0,ffff8000218e1b14,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff8000218e1950,158,0,ffff8000218e1b14,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff8000000448c0,ffff8000218e1bf8,fffffd80681f7800) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff8000218e1cf8,0,ffff800000b63a80,0,ffffffff82879b30,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b4e000,ffff8000218e1fc8) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff8000218e1fc8,ffff8000218e1fd4,29,0,ffff800000b4e000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b4e000,fffffd80681f7800) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d01,ffff8000218e22b8,ffff8000212d7000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff8000218e2110) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806f0a7418,ffff8000218e22b8,11,fffffd807f7bf8a0) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd806ca737c8,ffff8000218e22b8,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800023fb5668,f0,ffff8000218e22b8,0,ffff8000218e23a0) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff800023fb5668,ffff8000218e2350,ffff8000218e23a0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff8000218e2420) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000218e2420) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x79292f20390, 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x27 inintr sys/dev/kcov.c:491 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x27 kd_curproc sys/dev/kcov.c:454 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x27 sys/dev/kcov.c:112 syscall(ffff800021f083c0) at syscall+0x10b sys/arch/amd64/amd64/trap.c:521 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbc520, count: -6