login: uvm_fault(0xffffffff827af918, 0xffffffff8268b060, 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(0xffffffff827af918, 0xffffffff8268b060, 0, 2) -> e m_copyback(ffff8000222f6da0,158,0,ffff8000222f6f64,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff8000222f6da0,158,0,ffff8000222f6f64,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 end trace frame: 0xffff8000222f7020, count: 0 ddb{0}> trace m_copyback(ffff8000222f6da0,158,0,ffff8000222f6f64,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff8000222f6da0,158,0,ffff8000222f6f64,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044a40,ffff8000222f7048,fffffd806d7d0c00) at pflog_mtap+0x446 sys/net/if_pflog.c:390 pflog_packet(ffff8000222f7148,0,ffff800000b36ff0,0,ffffffff8288a538,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b11800,ffff8000222f7418) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff8000222f7418,ffff8000222f7424,29,0,ffff800000b11800) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b11800,fffffd806d7d0c00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d01,ffff8000222f7708,ffff80002350c000,2) at tun_dev_write+0x204 sys/net/if_tun.c:867 spec_write(ffff8000222f7560) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806f0ff4e8,ffff8000222f7708,11,fffffd807f7bf660) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:274 vn_write(fffffd80673aabe0,ffff8000222f7708,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff8000212c6298,f0,ffff8000222f7708,0,ffff8000222f77f0) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff8000212c6298,ffff8000222f77a0,ffff8000222f77f0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff8000222f7870) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000222f7870) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:566 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x37e11975c0, count: -14 ddb{0}> show registers rdi 0 rsi 0xfd929 acpi_pdirpa+0xe9791 rbp 0xffff8000222f6d80 rbx 0xffffffffffff9b5b rdx 0xfd928 acpi_pdirpa+0xe9790 rcx 0xffffffff826bd580 mbstat_boot_boot_cpumem rax 0 r8 0x2 r9 0x1 r10 0xd06bbe16b65ffd55 r11 0x16a65939587fd718 r12 0xfffffd8068559c00 r13 0x128 r14 0x30 r15 0xffff8000222f6f80 rip 0xffffffff8115d729 m_copyback+0x119 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000222f6cc0 ss 0x10 m_copyback+0x119: addq $0x1,0x8(%rcx,%rbx,8) ddb{0}> show proc PROC (syz-executor.1) pid=397443 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000212c78d0,0xffffffff828931e0 process=0xffff8000230f6400 user=0xffff8000222f2000, vmspace=0xfffffd807effe730 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 26526 382569 2573 0 7 0 syz-executor.1 *26526 397443 2573 0 7 0x4000000 syz-executor.1 39311 166761 0 0 3 0x14200 bored sosplice 2573 56751 85482 0 3 0x82 nanosleep syz-executor.1 67063 60895 1 0 3 0x100083 ttyin getty 74729 393422 85482 0 3 0x2 biowait syz-executor.0 85482 126797 38407 0 3 0x82 thrsleep syz-fuzzer 85482 155804 38407 0 3 0x4000082 nanosleep syz-fuzzer 85482 163129 38407 0 3 0x4000082 kqread syz-fuzzer 85482 511385 38407 0 3 0x4000082 thrsleep syz-fuzzer 85482 395720 38407 0 3 0x4000082 thrsleep syz-fuzzer 85482 243448 38407 0 3 0x4000082 thrsleep syz-fuzzer 85482 405923 38407 0 3 0x4000082 nanosleep syz-fuzzer 85482 408481 38407 0 3 0x4000082 thrsleep syz-fuzzer 38407 400920 12419 0 3 0x10008a pause ksh 12419 283979 35334 0 3 0x92 select sshd 35334 360468 1 0 3 0x80 select sshd 25673 75563 61144 74 3 0x100092 bpf pflogd 61144 274441 1 0 3 0x80 netio pflogd 4222 442508 73551 73 3 0x100090 kqread syslogd 73551 509956 1 0 3 0x100082 netio syslogd 13675 199224 1 77 3 0x100090 poll dhclient 26419 169215 1 0 3 0x80 poll dhclient 49363 61154 0 0 3 0x14200 bored smr 65343 347419 0 0 2 0x14200 zerothread 99180 521225 0 0 3 0x14200 aiodoned aiodoned 55274 104332 0 0 3 0x14200 syncer update 15597 56359 0 0 3 0x14200 cleaner cleaner 47874 192356 0 0 3 0x14200 reaper reaper 4978 212645 0 0 3 0x14200 pgdaemon pagedaemon 1111 397485 0 0 3 0x14200 bored crynlk 9225 430089 0 0 3 0x14200 bored crypto 69867 152779 0 0 3 0x40014200 acpi0 acpi0 16043 112958 0 0 3 0x40014200 idle1 93320 82801 0 0 3 0x14200 bored softnet 91298 363943 0 0 3 0x14200 bored systqmp 81981 147108 0 0 3 0x14200 bored systq 93299 308787 0 0 3 0x40014200 bored softclock 98034 325794 0 0 3 0x40014200 idle0 1 13966 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 26526 (syz-executor.1) thread 0xffff8000212c6298 (397443) exclusive rwlock netlock r = 0 (0xffffffff8270c490) #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: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: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:566 #8 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82891f00) #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:566 #5 Xsyscall+0x128 Process 74729 (syz-executor.0) thread 0xffff8000211e64f8 (393422) exclusive rrwlock inode r = 0 (0xfffffd8066eca920) #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:614 #4 vn_lock+0x6c sys/kern/vfs_vnops.c:575 #5 vget+0x1c6 sys/kern/vfs_subr.c:671 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x6b sys/ufs/ffs/ffs_vfsops.c:1321 #8 ufs_lookup+0x151d sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x5b sys/kern/vfs_vops.c:90 #10 vfs_lookup+0x708 sys/kern/vfs_lookup.c:568 #11 namei+0x5f7 sys/kern/vfs_lookup.c:249 #12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1848 #13 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:566 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8066ecad60) #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: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 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1848 #8 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:566 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9499 6548K 7043K 78643K 11099 0 pcb 13 8K 8K 78643K 68 0 rtable 110 5K 6K 78643K 349 0 ifaddr 59 13K 13K 78643K 99 0 counters 43 33K 34K 78643K 57 0 ioctlops 0 0K 4K 78643K 1508 0 iov 0 0K 16K 78643K 6 0 mount 1 1K 1K 78643K 1 0 vnodes 1223 77K 77K 78643K 1393 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 3 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 14 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 648 0 proc 61 63K 95K 78643K 500 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 32 0 in_multi 29 1K 2K 78643K 71 0 ether_multi 1 0K 0K 78643K 9 0 mrt 0 0K 0K 78643K 6 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 401 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 181 30K 33K 78643K 2415 0 UVM aobj 3 2K 2K 78643K 3 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 56 0 NDP 8 0K 0K 78643K 22 0 temp 97 3961K 4025K 78643K 6319 0 kqueue 3 4K 8K 78643K 12 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 10 0 4 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 96 33 0 31 1 0 1 1 0 8 0 rtentry 112 68 0 27 2 0 2 2 0 8 0 unpcb 120 115 0 105 1 0 1 1 0 8 0 syncache 272 13 0 13 2 2 0 1 0 8 0 tcpqe 32 1652 0 1652 4 4 0 3 0 8 0 tcpcb 592 138 0 130 4 2 2 3 0 8 0 inpcb 296 313 0 305 2 0 2 2 0 8 1 rttmr 72 2 0 2 1 1 0 1 0 8 0 nd6 48 10 0 6 1 0 1 1 0 8 0 kcovpl 48 3 0 1 1 0 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 7 0 2 1 0 1 1 0 8 0 pfstitem 24 28 0 4 1 0 1 1 0 8 0 pfstkey 112 28 0 4 1 0 1 1 0 8 0 pfstate 328 28 0 4 3 0 3 3 0 8 0 pfrule 1360 32 0 16 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 263 0 90 13 2 11 13 0 8 0 art_table 32 264 0 90 2 0 2 2 0 8 0 art_node 16 67 0 29 1 0 1 1 0 8 0 sysvmsgpl 40 21 0 2 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 10 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2134 0 730 89 1 88 89 0 8 0 ffsino 272 2134 0 730 95 1 94 94 0 8 0 nchpl 144 3026 0 1435 60 0 60 60 0 8 0 uvmvnodes 72 2305 0 0 42 0 42 42 0 8 0 vnodes 208 2305 0 0 122 0 122 122 0 8 0 namei 1024 7662 0 7662 2 1 1 1 0 8 1 percpumem 16 39 0 7 1 0 1 1 0 8 0 pfiaddrpl 120 9 0 0 1 0 1 1 0 8 0 scxspl 192 9073 0 9072 8 7 1 7 0 8 0 plimitpl 152 26 0 18 1 0 1 1 0 8 0 sigapl 424 862 0 830 4 0 4 4 0 8 0 futexpl 56 4943 0 4943 1 0 1 1 0 8 1 knotepl 112 87 0 67 1 0 1 1 0 8 0 kqueuepl 152 573 0 571 1 0 1 1 0 8 0 pipepl 304 93 0 82 2 1 1 2 0 8 0 fdescpl 496 846 0 830 3 0 3 3 0 8 0 filepl 152 3221 0 3119 6 1 5 5 0 8 0 lockfpl 104 52 0 51 1 0 1 1 0 8 0 lockfspl 48 23 0 22 1 0 1 1 0 8 0 sessionpl 120 20 0 9 1 0 1 1 0 8 0 pgrppl 48 20 0 9 1 0 1 1 0 8 0 ucredpl 96 212 0 203 1 0 1 1 0 8 0 zombiepl 144 830 0 830 2 1 1 1 0 8 1 processpl 1008 862 0 830 6 1 5 5 0 8 0 procpl 632 1745 0 1705 6 2 4 5 0 8 0 sosppl 144 14 0 14 1 1 0 1 0 8 0 sockpl 400 461 0 441 3 0 3 3 0 8 0 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl12k 12288 5 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 14 0 0 2 0 2 2 0 8 0 mcl2k 2048 387 0 0 48 0 48 48 0 8 0 mtagpl 96 37 0 0 1 0 1 1 0 8 0 mbufpl 256 424 0 0 26 0 26 26 0 8 0 bufpl 280 4269 0 181 292 0 292 292 0 8 0 anonpl 16 89627 0 66913 93 1 92 92 0 124 0 amapchunkpl 152 4827 0 4382 33 2 31 31 0 158 13 amappl16 192 2710 0 1734 50 0 50 50 0 8 0 amappl15 184 3 0 3 2 2 0 1 0 8 0 amappl14 176 23 0 18 1 0 1 1 0 8 0 amappl13 168 38 0 35 1 0 1 1 0 8 0 amappl12 160 449 0 444 1 0 1 1 0 8 0 amappl11 152 58 0 42 1 0 1 1 0 8 0 amappl10 144 12 0 7 1 0 1 1 0 8 0 amappl9 136 243 0 241 2 1 1 1 0 8 0 amappl8 128 203 0 134 3 0 3 3 0 8 0 amappl7 120 430 0 420 1 0 1 1 0 8 0 amappl6 112 74 0 60 1 0 1 1 0 8 0 amappl5 104 1262 0 1245 1 0 1 1 0 8 0 amappl4 96 723 0 696 1 0 1 1 0 8 0 amappl3 88 146 0 137 1 0 1 1 0 8 0 amappl2 80 5531 0 5464 3 1 2 3 0 8 0 amappl1 72 34606 0 34130 25 15 10 19 0 8 0 amappl 80 2075 0 1970 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 846 0 830 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 846 0 830 1 0 1 1 0 8 0 vmmpekpl 168 9087 0 9045 2 0 2 2 0 8 0 vmmpepl 168 116911 0 114647 150 17 133 138 0 357 32 vmsppl 368 845 0 830 2 0 2 2 0 8 0 pdppl 4096 1699 0 1660 7 1 6 6 0 8 1 pvpl 32 359366 0 333528 220 4 216 216 0 265 6 pmappl 232 845 0 830 2 1 1 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 300 0 11 9 0 9 9 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace m_copyback(ffff8000222f6da0,158,0,ffff8000222f6f64,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff8000222f6da0,158,0,ffff8000222f6f64,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044a40,ffff8000222f7048,fffffd806d7d0c00) at pflog_mtap+0x446 sys/net/if_pflog.c:390 pflog_packet(ffff8000222f7148,0,ffff800000b36ff0,0,ffffffff8288a538,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b11800,ffff8000222f7418) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff8000222f7418,ffff8000222f7424,29,0,ffff800000b11800) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b11800,fffffd806d7d0c00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d01,ffff8000222f7708,ffff80002350c000,2) at tun_dev_write+0x204 sys/net/if_tun.c:867 spec_write(ffff8000222f7560) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806f0ff4e8,ffff8000222f7708,11,fffffd807f7bf660) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:274 vn_write(fffffd80673aabe0,ffff8000222f7708,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff8000212c6298,f0,ffff8000222f7708,0,ffff8000222f77f0) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff8000212c6298,ffff8000222f77a0,ffff8000222f77f0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff8000222f7870) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000222f7870) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:566 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x37e11975c0, 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: 0x7f7ffffd7190, count: -3