login: uvm_fault(0xffffffff8285a990, 0xffffffff82690e48, 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(0xffffffff8285a990, 0xffffffff82690e48, 0, 2) -> e m_copyback(ffff800020ee5610,ac,0,ffff800020ee57d4,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800020ee5610,ac,0,ffff800020ee57d4,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 end trace frame: 0xffff800020ee5890, count: 0 ddb{0}> trace m_copyback(ffff800020ee5610,ac,0,ffff800020ee57d4,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800020ee5610,ac,0,ffff800020ee57d4,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044ac0,ffff800020ee58b8,fffffd8079cc7500) at pflog_mtap+0x446 sys/net/if_pflog.c:390 pflog_packet(ffff800020ee59b8,0,ffff800000ac1fd8,0,ffffffff82889230,0) at pflog_packet+0x3a4 pf_test(2,1,ffff800000b0c000,ffff800020ee5bd8) at pf_test+0xfc5 sys/net/pf.c:7226 ip_input_if(ffff800020ee5bd8,ffff800020ee5be4,4,0,ffff800000b0c000) at ip_input_if+0x578 sys/netinet/ip_input.c:331 ipv4_input(ffff800000b0c000,fffffd8079cc7500) at ipv4_input+0x48 sys/netinet/ip_input.c:230 tun_dev_write(5d00,ffff800020ee5ec8,ffff800022ef5000,2) at tun_dev_write+0x204 sys/net/if_tun.c:867 spec_write(ffff800020ee5d20) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806e7ad418,ffff800020ee5ec8,11,fffffd807f7bf540) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd8069ff8a30,ffff800020ee5ec8,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800022b9b660,f0,ffff800020ee5ec8,0,ffff800020ee5fb0) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff800022b9b660,ffff800020ee5f60,ffff800020ee5fb0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020ee6030) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020ee6030) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:568 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2d884cfbe30, count: -14 ddb{0}> show registers rdi 0 rsi 0x6c679 acpi_pdirpa+0x584e1 rbp 0xffff800020ee55f0 rbx 0xffffffffffff9510 rdx 0x6c678 acpi_pdirpa+0x584e0 rcx 0xffffffff826c65c0 mbstat_boot_boot_cpumem rax 0 r8 0x2 r9 0xffffffff819098f8 pf_translate_a+0x1a8 r10 0x1 r11 0x7b5e2fd7acda94e2 r12 0xfffffd8079c2df00 r13 0x8c r14 0x20 r15 0xffff800020ee57f0 rip 0xffffffff811dd469 m_copyback+0x119 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020ee5530 ss 0x10 m_copyback+0x119: addq $0x1,0x8(%rcx,%rbx,8) ddb{0}> show proc PROC (syz-executor.0) pid=261643 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=76, nice=20 forw=0xffffffffffffffff, list=0xffff800022b9a790,0xffffffff82893668 process=0xffff800020eac7e8 user=0xffff800020ee1000, vmspace=0xfffffd8069cbd188 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 73209 103172 88997 0 2 0 syz-executor.0 *73209 261643 88997 0 7 0x4000000 syz-executor.0 60574 196232 99291 0 7 0 syz-executor.1 60574 65872 99291 0 3 0x4000080 fsleep syz-executor.1 99291 375665 16434 0 3 0x82 nanosleep syz-executor.1 26007 311192 1 0 3 0x100083 ttyin getty 84960 376568 0 0 3 0x14280 nfsidl nfsio 46515 164250 0 0 3 0x14280 nfsidl nfsio 48028 431646 0 0 3 0x14280 nfsidl nfsio 48757 457812 0 0 3 0x14280 nfsidl nfsio 39074 46915 0 0 3 0x14280 nfsidl nfsio 21014 295324 0 0 3 0x14280 nfsidl nfsio 98372 522924 0 0 3 0x14280 nfsidl nfsio 23003 389365 0 0 3 0x14280 nfsidl nfsio 9732 172229 0 0 3 0x14280 nfsidl nfsio 99379 411355 0 0 3 0x14280 nfsidl nfsio 60179 81430 0 0 3 0x14280 nfsidl nfsio 20722 432765 0 0 3 0x14280 nfsidl nfsio 28819 495942 0 0 3 0x14280 nfsidl nfsio 69296 114334 0 0 3 0x14280 nfsidl nfsio 51802 494602 0 0 3 0x14280 nfsidl nfsio 32938 286868 0 0 3 0x14280 nfsidl nfsio 71686 76586 0 0 3 0x14280 nfsidl nfsio 65112 310060 0 0 3 0x14280 nfsidl nfsio 12907 311982 0 0 3 0x14280 nfsidl nfsio 31997 142665 0 0 3 0x14280 nfsidl nfsio 88997 264490 16434 0 3 0x82 nanosleep syz-executor.0 1771 156213 0 0 3 0x14200 bored sosplice 16434 54502 91946 0 3 0x82 thrsleep syz-fuzzer 16434 487303 91946 0 3 0x4000082 nanosleep syz-fuzzer 16434 416491 91946 0 3 0x4000082 thrsleep syz-fuzzer 16434 34812 91946 0 3 0x4000082 thrsleep syz-fuzzer 16434 281265 91946 0 3 0x4000082 kqread syz-fuzzer 16434 268514 91946 0 3 0x4000082 thrsleep syz-fuzzer 16434 326130 91946 0 3 0x4000082 thrsleep syz-fuzzer 16434 362116 91946 0 3 0x4000082 thrsleep syz-fuzzer 91946 133278 93832 0 3 0x10008a pause ksh 93832 140268 31786 0 3 0x92 select sshd 31786 213870 1 0 3 0x80 select sshd 56540 483600 53061 74 3 0x100092 bpf pflogd 53061 46621 1 0 3 0x80 netio pflogd 69172 461970 60360 73 3 0x100090 kqread syslogd 60360 376735 1 0 3 0x100082 netio syslogd 46893 506809 1 77 3 0x100090 poll dhclient 97457 262448 1 0 3 0x80 poll dhclient 95681 290785 0 0 3 0x14200 bored smr 54432 13025 0 0 2 0x14200 zerothread 46772 188598 0 0 3 0x14200 aiodoned aiodoned 55562 123014 0 0 3 0x14200 syncer update 20498 142386 0 0 3 0x14200 cleaner cleaner 36807 404856 0 0 3 0x14200 reaper reaper 584 109892 0 0 3 0x14200 pgdaemon pagedaemon 37117 398109 0 0 3 0x14200 bored crynlk 18431 80481 0 0 3 0x14200 bored crypto 86726 295097 0 0 3 0x40014200 acpi0 acpi0 14570 142061 0 0 3 0x40014200 idle1 72578 387472 0 0 3 0x14200 bored softnet 56567 7041 0 0 3 0x14200 bored systqmp 16960 149946 0 0 3 0x14200 bored systq 46552 257624 0 0 3 0x40014200 bored softclock 19353 356371 0 0 3 0x40014200 idle0 1 512639 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 73209 (syz-executor.0) thread 0xffff800022b9b660 (261643) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9543 6628K 7306K 78643K 16381 0 pcb 13 8K 8K 78643K 314 0 rtable 97 4K 5K 78643K 1009 0 ifaddr 80 16K 16K 78643K 269 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 119 0 ioctlops 0 0K 4K 78643K 1753 0 iov 0 0K 24K 78643K 212 0 mount 1 1K 1K 78643K 1 0 vnodes 1214 76K 77K 78643K 3356 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 36 0 VM map 2 1K 1K 78643K 2 0 sem 11 1K 1K 78643K 11 0 dirhash 6 1K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 6 17K 25K 78643K 5587 0 sigio 0 0K 0K 78643K 74 0 proc 61 63K 95K 78643K 1048 0 subproc 32 2K 2K 78643K 102 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 429 0 in_multi 33 2K 2K 78643K 324 0 ether_multi 1 0K 0K 78643K 69 0 mrt 0 0K 0K 78643K 156 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 73 334K 334K 78643K 73 0 exec 0 0K 2K 78643K 637 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 196 158K 185K 78643K 13608 0 UVM aobj 83 3K 3K 78643K 116 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 196 0 NDP 13 0K 0K 78643K 63 0 temp 135 3964K 4030K 78643K 39155 0 kqueue 3 4K 12K 78643K 312 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 25 0 19 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 96 212 0 210 1 0 1 1 0 8 0 rtentry 112 195 0 159 2 0 2 2 0 8 0 unpcb 120 1944 0 1930 1 0 1 1 0 8 0 syncache 272 53 0 53 6 5 1 1 0 8 1 tcpqe 32 16 0 16 2 2 0 1 0 8 0 tcpcb 592 947 0 927 22 19 3 6 0 8 1 inpcb 296 2295 0 2288 9 7 2 2 0 8 1 rttmr 72 76 0 76 4 4 0 1 0 8 0 nd6 48 18 0 12 1 0 1 1 0 8 0 pkpcb 40 28 0 28 1 1 0 1 0 8 0 kcovpl 48 6 0 4 1 0 1 1 0 8 0 ppxss 1128 11 0 11 1 1 0 1 0 8 0 pffrag 232 12 0 12 2 2 0 1 0 482 0 pffrnode 88 12 0 12 2 2 0 1 0 8 0 pffrent 40 340 0 340 3 3 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 3 0 1 1 0 1 1 0 8 0 pfstitem 24 50 0 48 1 0 1 1 0 8 0 pfstkey 112 66 0 64 1 0 1 1 0 8 0 pfstate 328 58 0 56 3 2 1 3 0 8 0 pfrule 1360 47 0 35 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 480 0 293 12 0 12 12 0 8 0 art_table 32 481 0 293 2 0 2 2 0 8 0 art_node 16 194 0 164 1 0 1 1 0 8 0 sysvmsgpl 40 80 0 40 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 9 0 0 1 0 1 1 0 8 0 shmpl 112 113 0 33 3 0 3 3 0 8 0 dirhash 1024 17 0 13 3 1 2 3 0 8 0 dino2pl 256 8760 0 7352 91 2 89 89 0 8 0 ffsino 272 8760 0 7352 95 0 95 95 0 8 0 nchpl 144 15736 0 14145 60 0 60 60 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 208 5926 0 0 312 0 312 312 0 8 0 namei 1024 41510 0 41510 3 2 1 1 0 8 1 percpumem 16 70 0 38 1 0 1 1 0 8 0 vcpupl 1984 10 0 0 2 0 2 2 0 8 0 vmpool 560 10 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 5 0 2 1 0 1 1 0 8 0 scsiplug 72 14 0 14 2 2 0 1 0 8 0 scxspl 200 46168 0 46168 16 15 1 7 0 8 1 plimitpl 152 347 0 339 1 0 1 1 0 8 0 sigapl 424 5813 0 5760 6 0 6 6 0 8 0 futexpl 56 43261 0 43260 3 2 1 1 0 8 0 knotepl 112 443 0 423 1 0 1 1 0 8 0 kqueuepl 152 2390 0 2360 2 0 2 2 0 8 0 pipepl 304 249 0 238 11 9 2 2 0 8 1 fdescpl 496 5777 0 5760 3 0 3 3 0 8 0 filepl 152 21265 0 21162 5 0 5 5 0 8 0 lockfpl 104 733 0 732 1 0 1 1 0 8 0 lockfspl 48 282 0 281 1 0 1 1 0 8 0 sessionpl 120 24 0 13 1 0 1 1 0 8 0 pgrppl 48 24 0 13 1 0 1 1 0 8 0 ucredpl 96 3987 0 3978 1 0 1 1 0 8 0 zombiepl 144 5760 0 5760 1 0 1 1 0 8 1 processpl 1008 5813 0 5760 7 0 7 7 0 8 0 procpl 632 12603 0 12541 6 0 6 6 0 8 0 sosppl 144 38 0 38 3 3 0 1 0 8 0 sockpl 400 4488 0 4455 11 7 4 5 0 8 0 mcl64k 65536 18 0 0 3 0 3 3 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 11 0 0 1 0 1 1 0 8 0 mcl8k 8192 14 0 0 2 0 2 2 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 276 0 0 16 0 16 16 0 8 0 mtagpl 96 323 0 0 8 0 8 8 0 8 0 mbufpl 256 896 0 0 47 0 47 47 0 8 0 bufpl 280 12478 0 6205 449 0 449 449 0 8 0 anonpl 16 430087 0 423733 51 20 31 41 0 124 0 amapchunkpl 152 29509 0 29338 44 36 8 27 0 158 0 amappl16 192 19187 0 18957 41 28 13 23 0 8 1 amappl15 184 74 0 73 1 0 1 1 0 8 0 amappl14 176 5 0 2 2 1 1 1 0 8 0 amappl13 168 85 0 83 1 0 1 1 0 8 0 amappl12 160 3443 0 3435 1 0 1 1 0 8 0 amappl11 152 368 0 352 1 0 1 1 0 8 0 amappl10 144 1416 0 1408 1 0 1 1 0 8 0 amappl9 136 362 0 361 1 0 1 1 0 8 0 amappl8 128 403 0 289 4 0 4 4 0 8 0 amappl7 120 1717 0 1708 1 0 1 1 0 8 0 amappl6 112 443 0 420 1 0 1 1 0 8 0 amappl5 104 7014 0 7000 1 0 1 1 0 8 0 amappl4 96 657 0 624 1 0 1 1 0 8 0 amappl3 88 199 0 192 1 0 1 1 0 8 0 amappl2 80 41658 0 41578 3 1 2 3 0 8 0 amappl1 72 155852 0 155381 24 14 10 19 0 8 0 amappl 80 12987 0 12919 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 64 115 0 33 2 0 2 2 0 8 0 uaddrrnd 24 5787 0 5760 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 5787 0 5760 1 0 1 1 0 8 0 vmmpekpl 168 32194 0 32147 3 0 3 3 0 8 0 vmmpepl 168 705156 0 703525 122 48 74 81 0 357 2 vmsppl 368 5786 0 5760 4 1 3 3 0 8 0 pdppl 4096 11581 0 11530 9 2 7 7 0 8 0 pvpl 32 1927938 0 1918239 208 120 88 114 0 265 0 pmappl 232 5786 0 5760 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 311 0 23 9 0 9 9 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace m_copyback(ffff800020ee5610,ac,0,ffff800020ee57d4,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800020ee5610,ac,0,ffff800020ee57d4,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044ac0,ffff800020ee58b8,fffffd8079cc7500) at pflog_mtap+0x446 sys/net/if_pflog.c:390 pflog_packet(ffff800020ee59b8,0,ffff800000ac1fd8,0,ffffffff82889230,0) at pflog_packet+0x3a4 pf_test(2,1,ffff800000b0c000,ffff800020ee5bd8) at pf_test+0xfc5 sys/net/pf.c:7226 ip_input_if(ffff800020ee5bd8,ffff800020ee5be4,4,0,ffff800000b0c000) at ip_input_if+0x578 sys/netinet/ip_input.c:331 ipv4_input(ffff800000b0c000,fffffd8079cc7500) at ipv4_input+0x48 sys/netinet/ip_input.c:230 tun_dev_write(5d00,ffff800020ee5ec8,ffff800022ef5000,2) at tun_dev_write+0x204 sys/net/if_tun.c:867 spec_write(ffff800020ee5d20) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806e7ad418,ffff800020ee5ec8,11,fffffd807f7bf540) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd8069ff8a30,ffff800020ee5ec8,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800022b9b660,f0,ffff800020ee5ec8,0,ffff800020ee5fb0) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff800022b9b660,ffff800020ee5f60,ffff800020ee5fb0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020ee6030) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020ee6030) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:568 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2d884cfbe30, 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 __mp_lock(ffffffff82893670) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82893670) at __mp_lock+0x133 sys/kern/kern_lock.c:147 syscall(ffff800021ef4ce0) at syscall+0x3fd mi_syscall sys/sys/syscall_mi.h:93 [inline] syscall(ffff800021ef4ce0) at syscall+0x3fd sys/arch/amd64/amd64/trap.c:568 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffae00, count: -6