uvm_fault(0xffffffff8277c4e8, 0xffffffff82691188, 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(0xffffffff8277c4e8, 0xffffffff82691188, 0, 2) -> e m_copyback(ffff8000222f06f0,158,0,ffff8000222f08b4,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff8000222f06f0,158,0,ffff8000222f08b4,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 end trace frame: 0xffff8000222f0970, count: 0 ddb{0}> trace m_copyback(ffff8000222f06f0,158,0,ffff8000222f08b4,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff8000222f06f0,158,0,ffff8000222f08b4,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044ac0,ffff8000222f0998,fffffd8066766500) at pflog_mtap+0x446 sys/net/if_pflog.c:390 pflog_packet(ffff8000222f0a98,0,ffff800000b60ab8,0,ffffffff828d5420,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b64000,ffff8000222f0d68) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff8000222f0d68,ffff8000222f0d74,29,0,ffff800000b64000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b64000,fffffd8066766500) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d01,ffff8000222f1058,ffff8000234b4000,2) at tun_dev_write+0x204 sys/net/if_tun.c:867 spec_write(ffff8000222f0eb0) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806e23c688,ffff8000222f1058,11,fffffd807f7b75a0) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:274 vn_write(fffffd806cada8f8,ffff8000222f1058,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff80002123d208,f0,ffff8000222f1058,0,ffff8000222f1140) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff80002123d208,ffff8000222f10f0,ffff8000222f1140) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff8000222f11c0) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000222f11c0) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3b05b81b870, count: -14 ddb{0}> show registers rdi 0 rsi 0x8db71 acpi_pdirpa+0x799d9 rbp 0xffff8000222f06d0 rbx 0xffffffffffffc5f8 rdx 0x8db70 acpi_pdirpa+0x799d8 rcx 0xffffffff826ae1c0 mbstat_boot_boot_cpumem rax 0 r8 0x2 r9 0x1 r10 0x56526caaf247ffc9 r11 0x90b91bdd32f17b03 r12 0xfffffd806dc2ee00 r13 0x128 r14 0x30 r15 0xffff8000222f08d0 rip 0xffffffff810e2ef9 m_copyback+0x119 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000222f0610 ss 0x10 m_copyback+0x119: addq $0x1,0x8(%rcx,%rbx,8) ddb{0}> show proc PROC (syz-executor.1) pid=173378 stat=onproc flags process=0 proc=4000000 pri=77, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff80002123c538,0xffffffff828d28c8 process=0xffff8000212358d0 user=0xffff8000222ec000, vmspace=0xfffffd807eff9000 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 61849 46863 23357 0 7 0 syz-executor.1 *61849 173378 23357 0 7 0x4000000 syz-executor.1 24911 162190 1 0 3 0x100083 ttyin getty 30912 142973 0 0 3 0x14200 acct acct 23357 120555 66111 0 3 0x82 nanosleep syz-executor.1 42641 86151 0 0 3 0x14200 bored sosplice 45132 499392 66111 0 3 0x2 biowait syz-executor.0 66111 285207 45143 0 3 0x82 thrsleep syz-fuzzer 66111 204888 45143 0 3 0x4000082 nanosleep syz-fuzzer 66111 434481 45143 0 3 0x4000082 thrsleep syz-fuzzer 66111 353363 45143 0 3 0x4000082 thrsleep syz-fuzzer 66111 298006 45143 0 3 0x4000082 thrsleep syz-fuzzer 66111 482526 45143 0 3 0x4000082 thrsleep syz-fuzzer 66111 487492 45143 0 3 0x4000082 kqread syz-fuzzer 66111 59695 45143 0 3 0x4000082 thrsleep syz-fuzzer 45143 202209 54897 0 3 0x10008a pause ksh 54897 435047 94838 0 3 0x92 select sshd 94838 450876 1 0 3 0x80 select sshd 17851 418560 37904 74 3 0x100092 bpf pflogd 37904 348829 1 0 3 0x80 netio pflogd 2610 374192 50116 73 3 0x100090 kqread syslogd 50116 153350 1 0 3 0x100082 netio syslogd 42910 515563 1 77 3 0x100090 poll dhclient 9501 82442 1 0 3 0x80 poll dhclient 63000 11745 0 0 3 0x14200 bored smr 44244 457802 0 0 3 0x14200 pgzero zerothread 74140 319024 0 0 3 0x14200 aiodoned aiodoned 61355 317726 0 0 3 0x14200 syncer update 42839 176672 0 0 3 0x14200 cleaner cleaner 92228 173820 0 0 3 0x14200 reaper reaper 89949 402361 0 0 3 0x14200 pgdaemon pagedaemon 65690 277303 0 0 3 0x14200 bored crynlk 55071 25190 0 0 3 0x14200 bored crypto 40011 318111 0 0 3 0x14200 bored viomb 83536 260384 0 0 3 0x40014200 acpi0 acpi0 94583 26039 0 0 3 0x40014200 idle1 2068 447566 0 0 3 0x14200 bored softnet 27205 110810 0 0 3 0x14200 bored systqmp 86682 374283 0 0 3 0x14200 bored systq 81350 223085 0 0 3 0x40014200 bored softclock 3139 448882 0 0 3 0x40014200 idle0 1 302099 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 61849 (syz-executor.1) thread 0xffff80002123d208 (173378) exclusive rwlock netlock r = 0 (0xffffffff82724f10) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1176 #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:590 #8 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff828cce20) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1176 #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:590 #5 Xsyscall+0x128 Process 45132 (syz-executor.0) thread 0xffff80002123d9b8 (499392) exclusive rrwlock inode r = 0 (0xfffffd8068f5ad68) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1176 #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:590 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806c716808) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1176 #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:590 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9593 6596K 7611K 78643K 18519 0 pcb 13 8K 8K 78643K 356 0 rtable 79 4K 7K 78643K 1065 0 ifaddr 100 18K 19K 78643K 367 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 135 0 ioctlops 0 0K 4K 78643K 1755 0 iov 0 0K 32K 78643K 217 0 mount 1 1K 1K 78643K 1 0 vnodes 1217 77K 77K 78643K 3660 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 30 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 352 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1825 197K 290K 78643K 13109 0 file desc 5 13K 25K 78643K 7417 0 sigio 0 0K 0K 78643K 8 0 proc 66 63K 95K 78643K 947 0 subproc 32 2K 2K 78643K 119 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 460 0 in_multi 16 1K 2K 78643K 445 0 ether_multi 1 0K 0K 78643K 90 0 mrt 1 0K 0K 78643K 36 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 777 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 265 254K 257K 78643K 18485 0 UVM aobj 41 2K 2K 78643K 51 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 462 0 NDP 19 0K 0K 78643K 94 0 temp 161 3975K 4043K 78643K 29621 0 kqueue 4 5K 12K 78643K 293 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 17 0 11 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 120 195 0 193 1 0 1 1 0 8 0 rtentry 112 178 0 154 2 0 2 2 0 8 0 unpcb 120 1421 0 1402 2 1 1 2 0 8 0 syncache 296 77 0 77 9 8 1 1 0 8 1 tcpqe 32 116 0 116 7 6 1 1 0 8 1 tcpcb 736 1122 0 1117 19 17 2 5 0 8 1 inpcb 296 3163 0 3153 8 6 2 3 0 8 0 rttmr 72 11 0 11 2 2 0 1 0 8 0 nd6 48 38 0 36 1 0 1 1 0 8 0 pkpcb 40 11 0 11 4 3 1 1 0 8 1 kcovpl 48 7 0 5 1 0 1 1 0 8 0 ppxss 1128 20 0 20 5 5 0 1 0 8 0 pfstscr 40 5 0 5 1 1 0 1 0 8 0 pffrag 232 12 0 12 3 2 1 1 0 482 1 pffrnode 88 12 0 12 3 2 1 1 0 8 1 pffrent 40 196 0 196 3 2 1 1 0 8 1 pfosfp 40 1428 0 1428 5 5 0 5 0 8 0 pfosfpen 112 1428 0 1428 21 21 0 21 0 8 0 pfrktable 1344 55 0 51 1 0 1 1 0 8 0 pftag 88 6 0 5 1 0 1 1 0 8 0 pfstitem 24 112 0 110 1 0 1 1 0 8 0 pfstkey 112 121 0 119 2 1 1 2 0 8 0 pfstate 328 119 0 117 5 4 1 5 0 8 0 pfrule 1360 136 0 101 5 1 4 4 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 922 0 809 15 6 9 13 0 8 0 art_table 32 923 0 809 2 0 2 2 0 8 0 art_node 16 177 0 157 1 0 1 1 0 8 0 sysvmsgpl 40 67 0 38 1 0 1 1 0 8 0 semapl 112 350 0 340 1 0 1 1 0 8 0 shmpl 112 48 0 10 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 10402 0 8986 92 2 90 90 0 8 0 ffsino 272 10402 0 8986 96 0 96 96 0 8 0 nchpl 144 18800 0 17209 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 47017 0 47017 4 3 1 1 0 8 1 percpumem 16 78 0 46 1 0 1 1 0 8 0 vcpupl 1984 17 0 0 3 0 3 3 0 8 0 vmpool 560 22 0 5 3 1 2 2 0 8 0 pfiaddrpl 120 20 0 15 1 0 1 1 0 8 0 scsiplug 72 8 0 8 2 2 0 1 0 8 0 scxspl 216 56832 0 56831 23 20 3 8 0 8 2 plimitpl 152 353 0 345 1 0 1 1 0 8 0 sigapl 424 7623 0 7589 4 0 4 4 0 8 0 futexpl 56 48874 0 48874 4 3 1 1 0 8 1 knotepl 112 439 0 419 1 0 1 1 0 8 0 kqueuepl 152 4078 0 4071 1 0 1 1 0 8 0 pipepl 304 351 0 340 15 13 2 2 0 8 1 fdescpl 496 7605 0 7589 3 0 3 3 0 8 0 filepl 152 25091 0 24989 6 1 5 6 0 8 1 lockfpl 104 818 0 817 1 0 1 1 0 8 0 lockfspl 48 330 0 329 1 0 1 1 0 8 0 sessionpl 144 26 0 15 1 0 1 1 0 8 0 pgrppl 48 41 0 30 1 0 1 1 0 8 0 ucredpl 96 2850 0 2841 1 0 1 1 0 8 0 zombiepl 144 7589 0 7589 1 0 1 1 0 8 1 processpl 1056 7623 0 7589 3 0 3 3 0 8 0 procpl 656 17282 0 17240 7 3 4 5 0 8 0 srpgc 96 2 0 2 1 1 0 1 0 8 0 sosppl 168 63 0 63 7 6 1 1 0 8 1 sockpl 400 4797 0 4768 15 11 4 5 0 8 0 mcl64k 65536 25 0 0 4 0 4 4 0 8 0 mcl16k 16384 8 0 0 1 0 1 1 0 8 0 mcl12k 12288 22 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 16 0 0 2 0 2 2 0 8 0 mcl4k 4096 25 0 0 4 1 3 3 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 348 0 0 18 0 18 18 0 8 0 mtagpl 96 123 0 0 3 0 3 3 0 8 0 mbufpl 256 1110 0 0 63 0 63 63 0 8 0 bufpl 280 13980 0 7731 447 0 447 447 0 8 0 anonpl 16 536611 0 528589 73 39 34 47 0 124 1 amapchunkpl 152 29628 0 29394 27 17 10 17 0 158 0 amappl16 192 23280 0 23007 47 32 15 24 0 8 1 amappl15 184 5228 0 5226 1 0 1 1 0 8 0 amappl14 176 582 0 577 1 0 1 1 0 8 0 amappl13 168 119 0 118 1 0 1 1 0 8 0 amappl12 160 100 0 95 1 0 1 1 0 8 0 amappl11 152 73 0 57 1 0 1 1 0 8 0 amappl10 144 146 0 142 1 0 1 1 0 8 0 amappl9 136 1690 0 1690 2 2 0 1 0 8 0 amappl8 128 408 0 282 5 0 5 5 0 8 0 amappl7 120 1643 0 1634 1 0 1 1 0 8 0 amappl6 112 227 0 210 1 0 1 1 0 8 0 amappl5 104 7173 0 7154 1 0 1 1 0 8 0 amappl4 96 999 0 972 1 0 1 1 0 8 0 amappl3 88 282 0 273 1 0 1 1 0 8 0 amappl2 80 53096 0 53020 3 0 3 3 0 8 0 amappl1 72 232910 0 232444 25 14 11 19 0 8 0 amappl 80 17715 0 17626 2 0 2 2 0 84 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 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 50 0 10 1 0 1 1 0 8 0 uaddrrnd 24 7627 0 7594 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 7627 0 7594 1 0 1 1 0 8 0 vmmpekpl 168 40542 0 40508 2 0 2 2 0 8 0 vmmpepl 168 946550 0 944935 131 53 78 85 0 357 2 vmsppl 368 7626 0 7594 5 1 4 4 0 8 1 pdppl 4096 15261 0 15205 86 28 58 59 0 8 2 pvpl 32 2321521 0 2310336 219 119 100 126 0 265 6 pmappl 232 7626 0 7594 4 2 2 2 0 8 0 extentpl 40 57 0 39 1 0 1 1 0 8 0 phpool 112 436 0 72 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace m_copyback(ffff8000222f06f0,158,0,ffff8000222f08b4,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff8000222f06f0,158,0,ffff8000222f08b4,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044ac0,ffff8000222f0998,fffffd8066766500) at pflog_mtap+0x446 sys/net/if_pflog.c:390 pflog_packet(ffff8000222f0a98,0,ffff800000b60ab8,0,ffffffff828d5420,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b64000,ffff8000222f0d68) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff8000222f0d68,ffff8000222f0d74,29,0,ffff800000b64000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b64000,fffffd8066766500) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d01,ffff8000222f1058,ffff8000234b4000,2) at tun_dev_write+0x204 sys/net/if_tun.c:867 spec_write(ffff8000222f0eb0) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806e23c688,ffff8000222f1058,11,fffffd807f7b75a0) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:274 vn_write(fffffd806cada8f8,ffff8000222f1058,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff80002123d208,f0,ffff8000222f1058,0,ffff8000222f1140) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff80002123d208,ffff8000222f10f0,ffff8000222f1140) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff8000222f11c0) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000222f11c0) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3b05b81b870, count: -14 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d68ff0) 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: 0x7f7ffffc8e30, count: -3