uvm_fault(0xffffffff8277aa10, 0xffffffff82695eb0, 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, 0xffffffff82695eb0, 0, 2) -> e m_copyback(ffff800020eb9560,138,0,ffff800020eb9724,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800020eb9560,138,0,ffff800020eb9724,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 end trace frame: 0xffff800020eb97e0, count: 0 ddb{0}> trace m_copyback(ffff800020eb9560,138,0,ffff800020eb9724,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800020eb9560,138,0,ffff800020eb9724,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044a80,ffff800020eb9808,fffffd807282fb00) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff800020eb9908,0,ffff800000ac1fd8,0,ffffffff82879b30,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b20800,ffff800020eb9bd8) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff800020eb9bd8,ffff800020eb9be4,29,0,ffff800000b20800) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b20800,fffffd807282fb00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d00,ffff800020eb9ec8,ffff80002411f000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff800020eb9d20) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd8069742288,ffff800020eb9ec8,11,fffffd807f7bfae0) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd80671fcac8,ffff800020eb9ec8,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800020ec4508,f0,ffff800020eb9ec8,0,ffff800020eb9fb0) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff800020ec4508,ffff800020eb9f60,ffff800020eb9fb0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020eba030) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020eba030) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf6f81243e40, count: -14 ddb{0}> show registers rdi 0 rsi 0x75e89 acpi_pdirpa+0x61cf1 rbp 0xffff800020eb9540 rbx 0xffffffffffffc88d rdx 0x75e88 acpi_pdirpa+0x61cf0 rcx 0xffffffff826b1a40 mbstat_boot_boot_cpumem rax 0 r8 0x2 r9 0xffffffff81e7a848 pf_translate_a+0x1a8 r10 0x1 r11 0x4f210e5c581f4c5f r12 0xfffffd807f00da00 r13 0x108 r14 0x30 r15 0xffff800020eb9740 rip 0xffffffff81142cf9 m_copyback+0x119 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020eb9480 ss 0x10 m_copyback+0x119: addq $0x1,0x8(%rcx,%rbx,8) ddb{0}> show proc PROC (syz-executor.0) pid=266302 stat=onproc flags process=0 proc=4000000 pri=82, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff800020ec4780,0xffffffff82888178 process=0xffff8000ffffdb90 user=0xffff800020eb5000, 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 84377 71688 22373 0 2 0 syz-executor.0 *84377 266302 22373 0 7 0x4000000 syz-executor.0 22373 515477 5204 0 3 0x82 nanosleep syz-executor.0 95601 277937 5204 0 3 0x82 piperd syz-executor.1 5204 246434 23845 0 3 0x82 kqread syz-fuzzer 5204 38580 23845 0 3 0x4000082 nanosleep syz-fuzzer 5204 131765 23845 0 3 0x4000082 thrsleep syz-fuzzer 5204 330786 23845 0 3 0x4000082 thrsleep syz-fuzzer 5204 64220 23845 0 3 0x4000082 thrsleep syz-fuzzer 5204 38495 23845 0 3 0x4000082 thrsleep syz-fuzzer 5204 27890 23845 0 7 0x4000002 syz-fuzzer 5204 342959 23845 0 3 0x4000082 thrsleep syz-fuzzer 23845 245832 73008 0 3 0x10008a pause ksh 73008 221951 58004 0 3 0x92 select sshd 23860 60875 1 0 3 0x100083 ttyin getty 58004 55450 1 0 3 0x80 select sshd 42668 105551 57345 74 3 0x100092 bpf pflogd 57345 41354 1 0 3 0x80 netio pflogd 54452 170561 24381 73 3 0x100010 ffs_fsync syslogd 24381 154782 1 0 3 0x100082 netio syslogd 98540 387452 1 77 3 0x100090 poll dhclient 18211 374593 1 0 3 0x80 poll dhclient 32799 435489 0 0 3 0x14200 bored smr 79507 36302 0 0 2 0x14200 zerothread 2701 413388 0 0 3 0x14200 aiodoned aiodoned 84700 477250 0 0 3 0x14200 syncer update 68331 245976 0 0 3 0x14200 cleaner cleaner 40044 310564 0 0 3 0x14200 reaper reaper 76535 383511 0 0 3 0x14200 pgdaemon pagedaemon 33801 231983 0 0 3 0x14200 bored crynlk 91038 113386 0 0 3 0x14200 bored crypto 67792 39198 0 0 3 0x40014200 acpi0 acpi0 45564 449059 0 0 3 0x40014200 idle1 50812 193112 0 0 3 0x14200 bored softnet 287 378927 0 0 3 0x14200 bored systqmp 32169 15092 0 0 3 0x14200 bored systq 54647 436882 0 0 3 0x40014200 bored softclock 42093 7726 0 0 3 0x40014200 idle0 1 268848 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 84377 (syz-executor.0) thread 0xffff800020ec4508 (266302) 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 Process 54452 (syslogd) thread 0xffff8000ffffeee0 (170561) exclusive rrwlock inode r = 0 (0xfffffd806ec0b918) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164 #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:603 #4 vn_lock+0x6c sys/kern/vfs_vnops.c:575 #5 sys_fsync+0x113 sys/kern/vfs_syscalls.c:2874 #6 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #6 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9516 6416K 6788K 78643K 11108 0 pcb 13 8K 8K 78643K 92 0 rtable 121 6K 7K 78643K 519 0 ifaddr 76 14K 14K 78643K 159 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 67 0 ioctlops 0 0K 4K 78643K 1518 0 iov 0 0K 16K 78643K 48 0 mount 1 1K 1K 78643K 1 0 vnodes 1220 77K 77K 78643K 1416 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 14 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 143 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 558 0 sigio 0 0K 0K 78643K 25 0 proc 61 63K 95K 78643K 620 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 42 0 in_multi 33 2K 2K 78643K 120 0 ether_multi 1 0K 0K 78643K 4 0 mrt 0 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 37 175K 175K 78643K 37 0 exec 0 0K 2K 78643K 456 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 137 25K 26K 78643K 2392 0 UVM aobj 34 2K 2K 78643K 42 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 42 0 NDP 13 0K 0K 78643K 42 0 temp 136 3979K 4043K 78643K 5535 0 kqueue 3 4K 12K 78643K 16 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 13 0 7 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 45 0 43 1 0 1 1 0 8 0 rtentry 112 96 0 52 2 0 2 2 0 8 0 unpcb 120 225 0 215 1 0 1 1 0 8 0 syncache 272 9 0 9 4 3 1 1 0 8 1 tcpqe 32 42 0 42 1 1 0 1 0 8 0 tcpcb 592 527 0 515 5 3 2 3 0 8 1 inpcb 296 845 0 838 3 1 2 2 0 8 1 ip6q 72 2 0 2 1 1 0 1 0 8 0 ip6af 40 6 0 6 1 1 0 1 0 8 0 nd6 48 25 0 19 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 9 0 9 1 1 0 1 0 482 0 pffrnode 88 9 0 9 1 1 0 1 0 8 0 pffrent 40 194 0 194 1 1 0 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 24 0 20 1 0 1 1 0 8 0 pfstitem 24 29 0 23 1 0 1 1 0 8 0 pfstkey 112 29 0 23 1 0 1 1 0 8 0 pfstate 328 29 0 23 2 0 2 2 0 8 0 pfrule 1360 33 0 23 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 395 0 204 15 2 13 13 0 8 1 art_table 32 396 0 204 2 0 2 2 0 8 0 art_node 16 95 0 55 1 0 1 1 0 8 0 sysvmsgpl 40 22 0 11 1 0 1 1 0 8 0 semupl 112 3 0 3 2 2 0 1 0 8 0 semapl 112 133 0 123 1 0 1 1 0 8 0 shmpl 112 39 0 8 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2038 0 639 88 0 88 88 0 8 0 ffsino 272 2038 0 639 94 0 94 94 0 8 0 nchpl 144 3125 0 1534 60 0 60 60 0 8 0 uvmvnodes 72 2237 0 0 41 0 41 41 0 8 0 vnodes 208 2237 0 0 118 0 118 118 0 8 0 namei 1024 9062 0 9062 2 1 1 1 0 8 1 percpumem 16 44 0 12 1 0 1 1 0 8 0 vmpool 560 2 0 2 1 0 1 1 0 8 1 pfiaddrpl 120 10 0 6 1 0 1 1 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 200 8823 0 8822 8 7 1 7 0 8 0 plimitpl 152 50 0 42 1 0 1 1 0 8 0 sigapl 424 764 0 733 4 0 4 4 0 8 0 futexpl 56 7573 0 7573 2 1 1 1 0 8 1 knotepl 112 115 0 95 1 0 1 1 0 8 0 kqueuepl 152 41 0 39 1 0 1 1 0 8 0 pipepl 304 152 0 141 5 3 2 2 0 8 0 fdescpl 496 749 0 733 3 0 3 3 0 8 0 filepl 152 4090 0 3988 5 0 5 5 0 8 1 lockfpl 104 129 0 128 1 0 1 1 0 8 0 lockfspl 48 43 0 42 1 0 1 1 0 8 0 sessionpl 120 21 0 10 1 0 1 1 0 8 0 pgrppl 48 25 0 14 1 0 1 1 0 8 0 ucredpl 96 355 0 346 1 0 1 1 0 8 0 zombiepl 144 733 0 733 1 0 1 1 0 8 1 processpl 1008 764 0 733 7 3 4 5 0 8 0 procpl 632 1746 0 1707 4 0 4 4 0 8 0 srpgc 72 2 0 2 1 1 0 1 0 8 0 sockpl 400 1117 0 1098 4 1 3 3 0 8 1 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 10 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 178 0 0 22 0 22 22 0 8 0 mtagpl 96 20 0 0 1 0 1 1 0 8 0 mbufpl 256 453 0 0 24 0 24 24 0 8 0 bufpl 280 4372 0 182 300 0 300 300 0 8 0 anonpl 16 90001 0 74819 76 7 69 69 0 124 0 amapchunkpl 152 4425 0 4142 16 4 12 16 0 158 0 amappl16 192 2799 0 2025 42 1 41 41 0 8 2 amappl15 184 9 0 8 2 1 1 1 0 8 0 amappl14 176 24 0 19 1 0 1 1 0 8 0 amappl13 168 104 0 102 1 0 1 1 0 8 0 amappl12 160 19 0 14 1 0 1 1 0 8 0 amappl11 152 63 0 48 1 0 1 1 0 8 0 amappl10 144 215 0 210 1 0 1 1 0 8 0 amappl9 136 421 0 419 2 1 1 1 0 8 0 amappl8 128 222 0 175 2 0 2 2 0 8 0 amappl7 120 494 0 486 1 0 1 1 0 8 0 amappl6 112 140 0 125 1 0 1 1 0 8 0 amappl5 104 823 0 810 1 0 1 1 0 8 0 amappl4 96 364 0 338 1 0 1 1 0 8 0 amappl3 88 93 0 85 1 0 1 1 0 8 0 amappl2 80 4508 0 4437 3 1 2 3 0 8 0 amappl1 72 32151 0 31690 24 14 10 19 0 8 0 amappl 80 2076 0 1993 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 41 0 8 1 0 1 1 0 8 0 uaddrrnd 24 751 0 735 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 751 0 735 1 0 1 1 0 8 0 vmmpekpl 168 8842 0 8809 2 0 2 2 0 8 0 vmmpepl 168 103804 0 101807 165 48 117 119 0 357 29 vmsppl 368 750 0 735 2 0 2 2 0 8 0 pdppl 4096 1509 0 1470 9 3 6 6 0 8 1 pvpl 32 297340 0 278958 180 17 163 169 0 265 0 pmappl 232 750 0 735 2 1 1 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 276 0 13 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace m_copyback(ffff800020eb9560,138,0,ffff800020eb9724,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800020eb9560,138,0,ffff800020eb9724,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044a80,ffff800020eb9808,fffffd807282fb00) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff800020eb9908,0,ffff800000ac1fd8,0,ffffffff82879b30,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b20800,ffff800020eb9bd8) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff800020eb9bd8,ffff800020eb9be4,29,0,ffff800000b20800) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b20800,fffffd807282fb00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d00,ffff800020eb9ec8,ffff80002411f000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff800020eb9d20) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd8069742288,ffff800020eb9ec8,11,fffffd807f7bfae0) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd80671fcac8,ffff800020eb9ec8,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800020ec4508,f0,ffff800020eb9ec8,0,ffff800020eb9fb0) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff800020ec4508,ffff800020eb9f60,ffff800020eb9fb0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020eba030) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020eba030) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf6f81243e40, 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: 0xc0034c1650, count: -3