uvm_fault(0xffffffff8277aa10, 0xffffffff82692710, 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, 0xffffffff82692710, 0, 2) -> e m_copyback(ffff800023114040,138,0,ffff800023114204,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800023114040,138,0,ffff800023114204,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 end trace frame: 0xffff8000231142c0, count: 0 ddb{0}> trace m_copyback(ffff800023114040,138,0,ffff800023114204,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800023114040,138,0,ffff800023114204,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044a00,ffff8000231142e8,fffffd8068bec200) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff8000231143e8,0,ffff800000abf558,0,ffffffff82879b30,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b0b000,ffff8000231146b8) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff8000231146b8,ffff8000231146c4,29,0,ffff800000b0b000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b0b000,fffffd8068bec200) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d01,ffff8000231149a8,ffff800023115000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff800023114800) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806ed79278,ffff8000231149a8,11,fffffd807f7bf960) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd806ca91a28,ffff8000231149a8,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800021fe18d8,f0,ffff8000231149a8,0,ffff800023114a90) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff800021fe18d8,ffff800023114a40,ffff800023114a90) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800023114b10) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023114b10) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4f3e966d8f0, count: -14 ddb{0}> show registers rdi 0 rsi 0x79fe7 acpi_pdirpa+0x65e4f rbp 0xffff800023114020 rbx 0xffffffffffffc199 rdx 0x79fe6 acpi_pdirpa+0x65e4e rcx 0xffffffff826b1a40 mbstat_boot_boot_cpumem rax 0 r8 0x2 r9 0xffffffff81e7a848 pf_translate_a+0x1a8 r10 0x1 r11 0x569bef8a56c34560 r12 0xfffffd8068bf2b00 r13 0x108 r14 0x30 r15 0xffff800023114220 rip 0xffffffff81142cf9 m_copyback+0x119 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800023113f60 ss 0x10 m_copyback+0x119: addq $0x1,0x8(%rcx,%rbx,8) ddb{0}> show proc PROC (syz-executor.1) pid=20589 stat=onproc flags process=0 proc=4000000 pri=83, usrpri=83, nice=20 forw=0xffffffffffffffff, list=0xffff800021fe0790,0xffffffff82888178 process=0xffff800021fd27e0 user=0xffff80002310f000, vmspace=0xfffffd807effe8a0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 20865 106045 580 0 7 0 syz-executor.1 *20865 20589 580 0 7 0x4000000 syz-executor.1 1716 125692 57554 0 2 0 syz-executor.0 1716 43568 57554 0 3 0x4000080 select syz-executor.0 32506 347037 0 0 3 0x14280 nfsidl nfsio 24553 308712 0 0 3 0x14280 nfsidl nfsio 72500 423071 0 0 3 0x14280 nfsidl nfsio 65353 378401 0 0 3 0x14280 nfsidl nfsio 9519 191625 0 0 3 0x14280 nfsidl nfsio 71894 36471 0 0 3 0x14280 nfsidl nfsio 26568 86230 0 0 3 0x14280 nfsidl nfsio 36453 347791 0 0 3 0x14280 nfsidl nfsio 89794 306266 0 0 3 0x14280 nfsidl nfsio 56836 479792 0 0 3 0x14280 nfsidl nfsio 48408 234641 0 0 3 0x14280 nfsidl nfsio 85180 15959 0 0 3 0x14280 nfsidl nfsio 43756 22913 0 0 3 0x14280 nfsidl nfsio 37013 463041 0 0 3 0x14280 nfsidl nfsio 5534 194454 0 0 3 0x14280 nfsidl nfsio 63662 17103 0 0 3 0x14280 nfsidl nfsio 53568 347025 0 0 3 0x14280 nfsidl nfsio 84058 82532 0 0 3 0x14280 nfsidl nfsio 37161 338634 0 0 3 0x14280 nfsidl nfsio 3542 92022 0 0 3 0x14280 nfsidl nfsio 4357 264191 0 0 3 0x14200 bored sosplice 580 522614 10365 0 3 0x82 nanosleep syz-executor.1 57554 79019 10365 0 3 0x82 nanosleep syz-executor.0 10365 337477 78484 0 3 0x82 thrsleep syz-fuzzer 10365 138653 78484 0 3 0x4000082 thrsleep syz-fuzzer 10365 8253 78484 0 3 0x4000082 thrsleep syz-fuzzer 10365 112782 78484 0 3 0x4000082 thrsleep syz-fuzzer 10365 83767 78484 0 3 0x4000082 thrsleep syz-fuzzer 10365 399745 78484 0 3 0x4000082 thrsleep syz-fuzzer 10365 123242 78484 0 3 0x4000082 thrsleep syz-fuzzer 10365 132265 78484 0 3 0x4000082 kqread syz-fuzzer 78484 392979 54921 0 3 0x10008a pause ksh 54921 518658 98160 0 3 0x92 select sshd 16290 27559 1 0 3 0x100083 ttyopn getty 98160 311355 1 0 3 0x80 select sshd 92880 311214 22524 74 3 0x100092 bpf pflogd 22524 61449 1 0 3 0x80 netio pflogd 56083 357269 55171 73 3 0x100090 kqread syslogd 55171 205952 1 0 3 0x100082 netio syslogd 9548 145558 1 77 3 0x100090 poll dhclient 63090 455518 1 0 3 0x80 poll dhclient 90334 149052 0 0 3 0x14200 bored smr 31600 250028 0 0 2 0x14200 zerothread 97172 276074 0 0 3 0x14200 aiodoned aiodoned 79644 92176 0 0 3 0x14200 syncer update 97368 292035 0 0 3 0x14200 cleaner cleaner 41477 484634 0 0 3 0x14200 reaper reaper 18822 326936 0 0 3 0x14200 pgdaemon pagedaemon 73717 344164 0 0 3 0x14200 bored crynlk 88285 245972 0 0 3 0x14200 bored crypto 68903 71600 0 0 3 0x40014200 acpi0 acpi0 59551 376217 0 0 3 0x40014200 idle1 19457 142073 0 0 3 0x14200 bored softnet 51703 4714 0 0 3 0x14200 bored systqmp 37987 370623 0 0 3 0x14200 bored systq 15409 432831 0 0 3 0x40014200 bored softclock 57383 301554 0 0 3 0x40014200 idle0 1 173745 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 20865 (syz-executor.1) thread 0xffff800021fe18d8 (20589) 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 9517 6430K 10729K 78643K 12398 0 pcb 13 8K 8K 78643K 83 0 rtable 118 6K 7K 78643K 396 0 ifaddr 71 14K 14K 78643K 129 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 51 0 ioctlops 0 0K 4K 78643K 1578 0 iov 0 0K 16K 78643K 60 0 mount 1 1K 1K 78643K 1 0 vnodes 1228 77K 77K 78643K 1694 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 0K 78643K 270 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 6 17K 25K 78643K 851 0 sigio 0 0K 0K 78643K 45 0 proc 63 63K 95K 78643K 498 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 50 0 in_multi 29 1K 2K 78643K 99 0 ether_multi 1 0K 0K 78643K 14 0 mrt 0 0K 0K 78643K 4 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 415 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 176 77K 81K 78643K 3545 0 UVM aobj 30 7K 7K 78643K 40 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 60 0 NDP 12 0K 0K 78643K 25 0 temp 134 3964K 4028K 78643K 7962 0 kqueue 3 4K 10K 78643K 27 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 7 0 0 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 43 0 41 1 0 1 1 0 8 0 rtentry 112 64 0 20 2 0 2 2 0 8 0 unpcb 120 481 0 471 1 0 1 1 0 8 0 syncache 272 6 0 6 2 2 0 1 0 8 0 tcpcb 592 1285 0 1281 13 11 2 6 0 8 1 inpcb 296 1702 0 1693 4 2 2 2 0 8 1 nd6 48 15 0 9 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 ppxss 1136 2 0 2 2 2 0 1 0 8 0 pfstscr 40 4 0 4 1 1 0 1 0 8 0 pffrag 232 11 0 10 4 3 1 1 0 482 0 pffrnode 88 11 0 10 4 3 1 1 0 8 0 pffrent 40 324 0 323 5 4 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 42 0 39 3 2 1 1 0 8 0 pfstitem 24 18 0 16 1 0 1 1 0 8 0 pfstkey 112 24 0 22 1 0 1 1 0 8 0 pfstate 328 20 0 18 2 1 1 2 0 8 0 pfrule 1360 33 0 27 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 305 0 102 16 3 13 14 0 8 0 art_table 32 306 0 102 2 0 2 2 0 8 0 art_node 16 63 0 22 1 0 1 1 0 8 0 sysvmsgpl 40 26 0 15 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 265 0 255 1 0 1 1 0 8 0 shmpl 112 37 0 10 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2435 0 1032 88 0 88 88 0 8 0 ffsino 272 2435 0 1032 94 0 94 94 0 8 0 nchpl 144 3738 0 2133 60 0 60 60 0 8 0 uvmvnodes 72 2879 0 0 53 0 53 53 0 8 0 vnodes 208 2879 0 0 152 0 152 152 0 8 0 namei 1024 10432 0 10432 1 0 1 1 0 8 1 percpumem 16 36 0 4 1 0 1 1 0 8 0 vcpupl 1984 4 0 0 1 0 1 1 0 8 0 vmpool 560 5 0 1 1 0 1 1 0 8 0 pfiaddrpl 120 12 0 11 3 2 1 1 0 8 0 scxspl 200 10867 0 10867 9 7 2 7 0 8 2 plimitpl 152 66 0 58 1 0 1 1 0 8 0 sigapl 424 1091 0 1038 7 1 6 7 0 8 0 futexpl 56 11202 0 11202 1 0 1 1 0 8 1 knotepl 112 94 0 74 1 0 1 1 0 8 0 kqueuepl 152 75 0 73 1 0 1 1 0 8 0 pipepl 304 261 0 250 7 6 1 2 0 8 0 fdescpl 496 1051 0 1034 3 0 3 3 0 8 0 filepl 152 6387 0 6285 6 1 5 6 0 8 1 lockfpl 104 180 0 179 1 0 1 1 0 8 0 lockfspl 48 75 0 74 1 0 1 1 0 8 0 sessionpl 120 18 0 7 1 0 1 1 0 8 0 pgrppl 48 24 0 13 1 0 1 1 0 8 0 ucredpl 96 509 0 500 1 0 1 1 0 8 0 zombiepl 144 1038 0 1038 1 0 1 1 0 8 1 processpl 1008 1091 0 1038 7 0 7 7 0 8 0 procpl 632 2950 0 2888 6 0 6 6 0 8 0 sosppl 144 11 0 11 4 4 0 1 0 8 0 sockpl 400 2233 0 2214 10 6 4 5 0 8 2 mcl64k 65536 13 0 0 2 0 2 2 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 8 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 8 0 0 1 0 1 1 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 316 0 0 39 0 39 39 0 8 0 mtagpl 96 45 0 0 2 0 2 2 0 8 0 mbufpl 256 426 0 0 21 0 21 21 0 8 0 bufpl 280 4660 0 186 320 0 320 320 0 8 0 anonpl 16 111514 0 93034 91 15 76 88 0 124 0 amapchunkpl 152 7655 0 7365 46 32 14 26 0 158 0 amappl16 192 4108 0 3214 62 16 46 54 0 8 1 amappl15 184 323 0 320 1 0 1 1 0 8 0 amappl14 176 522 0 514 1 0 1 1 0 8 0 amappl13 168 25 0 24 1 0 1 1 0 8 0 amappl12 160 13 0 9 1 0 1 1 0 8 0 amappl11 152 56 0 41 1 0 1 1 0 8 0 amappl10 144 13 0 7 1 0 1 1 0 8 0 amappl9 136 374 0 373 1 0 1 1 0 8 0 amappl8 128 188 0 124 3 0 3 3 0 8 0 amappl7 120 261 0 250 1 0 1 1 0 8 0 amappl6 112 123 0 109 1 0 1 1 0 8 0 amappl5 104 1127 0 1112 1 0 1 1 0 8 0 amappl4 96 298 0 272 1 0 1 1 0 8 0 amappl3 88 587 0 579 1 0 1 1 0 8 0 amappl2 80 7080 0 6994 3 1 2 3 0 8 0 amappl1 72 42519 0 42045 24 14 10 19 0 8 0 amappl 80 3228 0 3145 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 39 0 10 1 0 1 1 0 8 0 uaddrrnd 24 1056 0 1035 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1056 0 1035 1 0 1 1 0 8 0 vmmpekpl 168 11950 0 11908 3 0 3 3 0 8 0 vmmpepl 168 142624 0 140363 127 26 101 111 0 357 2 vmsppl 368 1055 0 1035 2 0 2 2 0 8 0 pdppl 4096 2119 0 2074 6 0 6 6 0 8 0 pvpl 32 399762 0 378137 215 32 183 207 0 265 4 pmappl 232 1055 0 1035 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 292 0 14 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace m_copyback(ffff800023114040,138,0,ffff800023114204,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800023114040,138,0,ffff800023114204,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044a00,ffff8000231142e8,fffffd8068bec200) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff8000231143e8,0,ffff800000abf558,0,ffffffff82879b30,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b0b000,ffff8000231146b8) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff8000231146b8,ffff8000231146c4,29,0,ffff800000b0b000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b0b000,fffffd8068bec200) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d01,ffff8000231149a8,ffff800023115000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff800023114800) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806ed79278,ffff8000231149a8,11,fffffd807f7bf960) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd806ca91a28,ffff8000231149a8,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800021fe18d8,f0,ffff8000231149a8,0,ffff800023114a90) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff800021fe18d8,ffff800023114a40,ffff800023114a90) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800023114b10) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023114b10) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4f3e966d8f0, 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: 0x7f7ffffe6da0, count: -3