uvm_fault(0xffffffff8284a238, 0xffffffff826a37f8, 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(0xffffffff8284a238, 0xffffffff826a37f8, 0, 2) -> e m_copyback(ffff800022531190,138,0,ffff800022531354,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800022531190,138,0,ffff800022531354,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 end trace frame: 0xffff800022531410, count: 0 ddb{0}> trace m_copyback(ffff800022531190,138,0,ffff800022531354,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800022531190,138,0,ffff800022531354,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044b40,ffff800022531438,fffffd806f299600) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff800022531538,0,ffff800000abfff8,0,ffffffff828840d8,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b56000,ffff800022531808) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff800022531808,ffff800022531814,29,0,ffff800000b56000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b56000,fffffd806f299600) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d00,ffff800022531af8,ffff800021cf7000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff800022531950) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd8074c89348,ffff800022531af8,11,fffffd807f7bf960) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd80657eb0b8,ffff800022531af8,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800020ec53d8,f0,ffff800022531af8,0,ffff800022531be0) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff800020ec53d8,ffff800022531b90,ffff800022531be0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800022531c60) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022531c60) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf1c3c24f160, count: -14 ddb{0}> show registers rdi 0 rsi 0x74c63 acpi_pdirpa+0x60acb rbp 0xffff800022531170 rbx 0xffffffffffff8566 rdx 0x74c62 acpi_pdirpa+0x60aca rcx 0xffffffff826e0cc0 mbstat_boot_boot_cpumem rax 0 r8 0x2 r9 0xffffffff8224dce8 pf_translate_a+0x1a8 r10 0x1 r11 0x1af75e33566bd6c7 r12 0xfffffd80671d9b00 r13 0x108 r14 0x30 r15 0xffff800022531370 rip 0xffffffff815394e9 m_copyback+0x119 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000225310b0 ss 0x10 m_copyback+0x119: addq $0x1,0x8(%rcx,%rbx,8) ddb{0}> show proc PROC (syz-executor.0) pid=300014 stat=onproc flags process=0 proc=4000000 pri=80, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff800020ec4508,0xffffffff8287ee50 process=0xffff800020ec6008 user=0xffff80002252c000, vmspace=0xfffffd807effecf0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 97563 176079 35782 0 7 0 syz-executor.0 *97563 300014 35782 0 7 0x4000000 syz-executor.0 55650 453072 48428 0 3 0x82 nanosleep syz-executor.1 35782 196175 48428 0 3 0x82 nanosleep syz-executor.0 77035 368002 0 0 3 0x14200 bored sosplice 84521 418711 1 0 3 0x100083 ttyin getty 48428 41136 16111 0 3 0x82 kqread syz-fuzzer 48428 47439 16111 0 3 0x4000082 nanosleep syz-fuzzer 48428 474542 16111 0 3 0x4000082 thrsleep syz-fuzzer 48428 291170 16111 0 3 0x4000082 thrsleep syz-fuzzer 48428 169577 16111 0 3 0x4000082 thrsleep syz-fuzzer 48428 375516 16111 0 3 0x4000082 thrsleep syz-fuzzer 48428 2005 16111 0 3 0x4000082 thrsleep syz-fuzzer 48428 341060 16111 0 3 0x4000082 thrsleep syz-fuzzer 16111 92698 21453 0 3 0x10008a pause ksh 21453 518242 42734 0 3 0x92 select sshd 42734 232686 1 0 3 0x80 select sshd 76392 370676 63402 74 3 0x100092 bpf pflogd 63402 301688 1 0 3 0x80 netio pflogd 22487 501529 94673 73 3 0x100090 kqread syslogd 94673 123648 1 0 3 0x100082 netio syslogd 879 17745 1 77 3 0x100090 poll dhclient 40770 24979 1 0 3 0x80 poll dhclient 2669 187215 0 0 3 0x14200 bored smr 40244 501899 0 0 2 0x14200 zerothread 88652 218843 0 0 3 0x14200 aiodoned aiodoned 30787 128408 0 0 3 0x14200 syncer update 77698 50132 0 0 3 0x14200 cleaner cleaner 27413 331166 0 0 3 0x14200 reaper reaper 54017 153378 0 0 3 0x14200 pgdaemon pagedaemon 56787 300873 0 0 3 0x14200 bored crynlk 50356 28662 0 0 3 0x14200 bored crypto 50723 391900 0 0 3 0x40014200 acpi0 acpi0 31544 259120 0 0 3 0x40014200 idle1 93306 471682 0 0 3 0x14200 bored softnet 17724 421988 0 0 3 0x14200 bored systqmp 12867 262423 0 0 3 0x14200 bored systq 54779 415313 0 0 3 0x40014200 bored softclock 37232 456437 0 0 3 0x40014200 idle0 1 98895 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 97563 (syz-executor.0) thread 0xffff800020ec53d8 (300014) exclusive rwlock netlock r = 0 (0xffffffff82730a80) #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 (0xffffffff8287f080) #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 9511 6412K 6861K 78643K 11420 0 pcb 13 8K 8K 78643K 112 0 rtable 99 5K 9K 78643K 627 0 ifaddr 67 13K 14K 78643K 180 0 counters 43 33K 34K 78643K 69 0 ioctlops 0 0K 4K 78643K 1563 0 iov 0 0K 24K 78643K 41 0 mount 1 1K 1K 78643K 1 0 vnodes 1224 77K 77K 78643K 1573 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 12 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 192 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 660 0 sigio 0 0K 0K 78643K 2 0 proc 62 63K 95K 78643K 616 0 subproc 32 2K 2K 78643K 85 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 34 0 in_multi 33 2K 2K 78643K 131 0 ether_multi 1 0K 0K 78643K 15 0 mrt 0 0K 0K 78643K 5 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 67 307K 307K 78643K 67 0 exec 0 0K 2K 78643K 481 0 pfkey data 0 0K 0K 78643K 1 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 152 92K 92K 78643K 2936 0 UVM aobj 27 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 72 0 NDP 13 0K 0K 78643K 39 0 temp 114 3961K 4025K 78643K 15526 0 kqueue 3 4K 8K 78643K 14 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 14 0 8 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 49 0 47 1 0 1 1 0 8 0 rtentry 112 104 0 68 2 0 2 2 0 8 0 unpcb 120 252 0 242 1 0 1 1 0 8 0 syncache 272 7 0 7 2 2 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 592 529 0 518 6 4 2 3 0 8 0 inpcb 296 859 0 849 6 4 2 2 0 8 1 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 21 0 15 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 pfstscr 40 6 0 6 2 2 0 1 0 8 0 pffrag 232 7 0 5 2 1 1 1 0 482 0 pffrnode 88 7 0 5 2 1 1 1 0 8 0 pffrent 40 99 0 97 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 67 0 64 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfqueue 264 2 0 2 1 1 0 1 0 8 0 pfstitem 24 23 0 21 1 0 1 1 0 8 0 pfstkey 112 27 0 25 1 0 1 1 0 8 0 pfstate 328 23 0 21 2 1 1 2 0 8 0 pfrule 1360 40 0 30 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 448 0 265 14 2 12 13 0 8 0 art_table 32 449 0 265 2 0 2 2 0 8 0 art_node 16 103 0 73 1 0 1 1 0 8 0 sysvmsgpl 40 28 0 5 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 186 0 176 1 0 1 1 0 8 0 shmpl 112 27 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2255 0 852 88 0 88 88 0 8 0 ffsino 272 2255 0 852 94 0 94 94 0 8 0 nchpl 144 3303 0 1710 60 0 60 60 0 8 0 uvmvnodes 72 2513 0 0 46 0 46 46 0 8 0 vnodes 208 2513 0 0 133 0 133 133 0 8 0 namei 1024 10725 0 10725 3 2 1 1 0 8 1 percpumem 16 45 0 13 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 pfiaddrpl 120 20 0 18 1 0 1 1 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 200 9862 0 9862 10 9 1 7 0 8 1 plimitpl 152 59 0 51 1 0 1 1 0 8 0 sigapl 424 868 0 836 4 0 4 4 0 8 0 futexpl 56 9494 0 9494 3 2 1 1 0 8 1 knotepl 112 113 0 93 1 0 1 1 0 8 0 kqueuepl 152 58 0 56 1 0 1 1 0 8 0 pipepl 304 171 0 160 5 3 2 2 0 8 1 fdescpl 496 852 0 836 3 0 3 3 0 8 0 filepl 152 5618 0 5516 5 0 5 5 0 8 1 lockfpl 104 92 0 91 1 0 1 1 0 8 0 lockfspl 48 41 0 40 1 0 1 1 0 8 0 sessionpl 120 22 0 11 1 0 1 1 0 8 0 pgrppl 48 30 0 19 1 0 1 1 0 8 0 ucredpl 96 1697 0 1688 1 0 1 1 0 8 0 zombiepl 144 836 0 835 1 0 1 1 0 8 0 processpl 1008 868 0 835 5 0 5 5 0 8 0 procpl 632 2258 0 2217 5 1 4 5 0 8 0 srpgc 72 2 0 2 1 1 0 1 0 8 0 sosppl 144 2 0 2 1 0 1 1 0 8 1 sockpl 400 1163 0 1141 7 4 3 4 0 8 0 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 9 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 7 0 0 1 0 1 1 0 8 0 mcl4k 4096 12 0 0 2 0 2 2 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 166 0 0 20 0 20 20 0 8 0 mtagpl 96 15 0 0 1 0 1 1 0 8 0 mbufpl 256 363 0 0 18 0 18 18 0 8 0 bufpl 280 4867 0 186 335 0 335 335 0 8 0 anonpl 16 103483 0 90119 80 7 73 79 0 124 0 amapchunkpl 152 5986 0 5719 36 11 25 25 0 158 14 amappl16 192 3183 0 2326 58 14 44 55 0 8 0 amappl15 184 229 0 228 1 0 1 1 0 8 0 amappl14 176 202 0 192 1 0 1 1 0 8 0 amappl13 168 43 0 42 1 0 1 1 0 8 0 amappl12 160 16 0 10 1 0 1 1 0 8 0 amappl11 152 191 0 174 1 0 1 1 0 8 0 amappl10 144 8 0 6 1 0 1 1 0 8 0 amappl9 136 436 0 434 1 0 1 1 0 8 0 amappl8 128 223 0 181 2 0 2 2 0 8 0 amappl7 120 293 0 285 1 0 1 1 0 8 0 amappl6 112 273 0 258 1 0 1 1 0 8 0 amappl5 104 801 0 788 1 0 1 1 0 8 0 amappl4 96 453 0 424 1 0 1 1 0 8 0 amappl3 88 264 0 257 1 0 1 1 0 8 0 amappl2 80 5463 0 5393 3 1 2 3 0 8 0 amappl1 72 37102 0 36639 24 14 10 19 0 8 0 amappl 80 2593 0 2512 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 29 0 3 1 0 1 1 0 8 0 uaddrrnd 24 856 0 836 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 856 0 836 1 0 1 1 0 8 0 vmmpekpl 168 10351 0 10316 2 0 2 2 0 8 0 vmmpepl 168 119175 0 117094 186 60 126 126 0 357 30 vmsppl 368 855 0 836 2 0 2 2 0 8 0 pdppl 4096 1719 0 1676 6 0 6 6 0 8 0 pvpl 32 319026 0 302475 202 26 176 188 0 265 6 pmappl 232 855 0 836 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 267 0 13 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace m_copyback(ffff800022531190,138,0,ffff800022531354,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800022531190,138,0,ffff800022531354,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044b40,ffff800022531438,fffffd806f299600) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff800022531538,0,ffff800000abfff8,0,ffffffff828840d8,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b56000,ffff800022531808) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff800022531808,ffff800022531814,29,0,ffff800000b56000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b56000,fffffd806f299600) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d00,ffff800022531af8,ffff800021cf7000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff800022531950) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd8074c89348,ffff800022531af8,11,fffffd807f7bf960) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd80657eb0b8,ffff800022531af8,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800020ec53d8,f0,ffff800022531af8,0,ffff800022531be0) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff800020ec53d8,ffff800022531b90,ffff800022531be0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800022531c60) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022531c60) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf1c3c24f160, 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 pvclock_get_timecount(ffffffff826de9a8) at pvclock_get_timecount+0x67 rdtsc machine/cpufunc.h:291 [inline] pvclock_get_timecount(ffffffff826de9a8) at pvclock_get_timecount+0x67 sys/dev/pv/pvclock.c:227 nanotime(ffff800022537df8) at nanotime+0x6e tc_delta sys/kern/kern_tc.c:131 [inline] nanotime(ffff800022537df8) at nanotime+0x6e bintime sys/kern/kern_tc.c:266 [inline] nanotime(ffff800022537df8) at nanotime+0x6e sys/kern/kern_tc.c:277 clock_gettime(ffff800020ec4508,0,ffff800022537df8) at clock_gettime+0x9d sys/kern/kern_time.c:116 sys_clock_gettime(ffff800020ec4508,ffff800022537e60,ffff800022537eb0) at sys_clock_gettime+0x4c sys/kern/kern_time.c:165 syscall(ffff800022537f30) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022537f30) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd4a10, count: -9