uvm_fault(0xffffffff827e91b8, 0xfffffd0000000008, 0, 2) -> e kernel: page fault trap, code=0 Stopped at soreceive+0xdcd: movq %rbx,0x8(%r12) ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xffffffff827e91b8, 0xfffffd0000000008, 0, 2) -> e soreceive(fffffd806f68c190,0,ffff800020e1d7d8,0,0,ffff800020e1d6e4) at soreceive+0xdcd sys/kern/uipc_socket.c:985 end trace frame: 0xffff800020e1d720, count: 0 ddb{0}> trace soreceive(fffffd806f68c190,0,ffff800020e1d7d8,0,0,ffff800020e1d6e4) at soreceive+0xdcd sys/kern/uipc_socket.c:985 soo_read(fffffd8078a36130,ffff800020e1d7d8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020ddc278,6,ffff800020e1d7d8,0,ffff800020e1d8c0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020ddc278,ffff800020e1d870,ffff800020e1d8c0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e1d940) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e1d940) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdaca0, count: -6 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800020e1d6c0 rbx 0xfffffd8067621400 rdx 0x64f88 acpi_pdirpa+0x50df0 rcx 0 rax 0xfffffd806f68c190 r8 0xffffffff814e1df6 soreceive+0xbe6 r9 0x3 r10 0xa2fdf4f5031aa4c7 r11 0x981fdc8b0d4cbf7d r12 0xfffffd0000000000 r13 0 r14 0x1 r15 0 rip 0xffffffff814e1fdd soreceive+0xdcd cs 0x8 rflags 0x10286 __ALIGN_SIZE+0xf286 rsp 0xffff800020e1d5d0 ss 0x10 soreceive+0xdcd: movq %rbx,0x8(%r12) ddb{0}> show proc PROC (dhclient) pid=264769 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020ddcea8,0xffff800020ddc4f8 process=0xffff800020df0010 user=0xffff800020e18000, vmspace=0xfffffd807efff2e0 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 12690 442814 9963 0 7 0 syz-executor.1 12690 120955 9963 0 3 0x4000080 fsleep syz-executor.1 27492 492164 0 0 3 0x14200 acct acct 51356 363678 0 0 3 0x14200 bored sosplice 6787 387664 0 0 3 0x14280 nfsidl nfsio 98676 181870 0 0 3 0x14280 nfsidl nfsio 73455 90783 0 0 3 0x14280 nfsidl nfsio 31568 189960 0 0 3 0x14280 nfsidl nfsio 15596 409505 0 0 3 0x14280 nfsidl nfsio 73076 182139 0 0 3 0x14280 nfsidl nfsio 39543 13774 0 0 3 0x14280 nfsidl nfsio 87075 237160 0 0 3 0x14280 nfsidl nfsio 98998 520744 0 0 3 0x14280 nfsidl nfsio 30292 233762 0 0 3 0x14280 nfsidl nfsio 32107 387136 0 0 3 0x14280 nfsidl nfsio 69223 430072 0 0 3 0x14280 nfsidl nfsio 75085 491251 0 0 3 0x14280 nfsidl nfsio 49035 261234 0 0 3 0x14280 nfsidl nfsio 51118 266859 0 0 3 0x14280 nfsidl nfsio 62381 56009 0 0 3 0x14280 nfsidl nfsio 8123 224582 0 0 3 0x14280 nfsidl nfsio 85529 297000 0 0 3 0x14280 nfsidl nfsio 74933 61477 0 0 3 0x14280 nfsidl nfsio 20729 233358 0 0 3 0x14280 nfsidl nfsio 9963 381552 24380 0 2 0x482 syz-executor.1 67591 95098 24380 0 2 0x2 syz-executor.0 24380 478359 38399 0 3 0x82 thrsleep syz-fuzzer 24380 111572 38399 0 3 0x4000082 nanosleep syz-fuzzer 24380 507745 38399 0 3 0x4000082 thrsleep syz-fuzzer 24380 109403 38399 0 3 0x4000082 kqread syz-fuzzer 24380 75860 38399 0 3 0x4000082 nanosleep syz-fuzzer 24380 22232 38399 0 3 0x4000082 thrsleep syz-fuzzer 24380 315015 38399 0 3 0x4000082 thrsleep syz-fuzzer 24380 490710 38399 0 3 0x4000082 thrsleep syz-fuzzer 24380 91152 38399 0 3 0x4000082 thrsleep syz-fuzzer 24380 62860 38399 0 3 0x4000082 thrsleep syz-fuzzer 24380 505546 38399 0 3 0x4000082 thrsleep syz-fuzzer 38399 76076 74983 0 3 0x10008a pause ksh 74983 403961 49059 0 2 0x12 sshd 50469 205975 1 0 3 0x100083 ttyin getty 49059 215106 1 0 3 0x80 select sshd 26280 480527 70928 74 3 0x100092 bpf pflogd 70928 72434 1 0 3 0x80 netio pflogd 64294 386865 68379 73 3 0x100090 kqread syslogd 68379 57331 1 0 3 0x100082 netio syslogd 64999 12297 1 77 3 0x100090 poll dhclient *34982 264769 1 0 7 0 dhclient 1514 294423 0 0 3 0x14200 bored smr 66026 22056 0 0 3 0x14200 pgzero zerothread 20833 96755 0 0 3 0x14200 aiodoned aiodoned 9019 419458 0 0 3 0x14200 syncer update 74224 139264 0 0 3 0x14200 cleaner cleaner 11521 210404 0 0 3 0x14200 reaper reaper 39263 302669 0 0 3 0x14200 pgdaemon pagedaemon 91081 97660 0 0 3 0x14200 bored crynlk 35037 25103 0 0 3 0x14200 bored crypto 1059 294057 0 0 3 0x40014200 acpi0 acpi0 30432 412374 0 0 3 0x40014200 idle1 25093 243100 0 0 3 0x14200 bored softnet 24456 386291 0 0 3 0x14200 bored systqmp 27335 62364 0 0 3 0x14200 bored systq 968 42775 0 0 3 0x40014200 bored softclock 95133 135792 0 0 3 0x40014200 idle0 1 370530 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 67591 (syz-executor.0) thread 0xffff800020ddd388 (95098) exclusive rrwlock inode r = 0 (0xfffffd80646cde78) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 rw_enter+0x453 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+0x81 sys/kern/vfs_vnops.c:575 #5 vget+0x1c8 sys/kern/vfs_subr.c:671 #6 ufs_ihashget+0x141 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x74 sys/ufs/ffs/ffs_vfsops.c:1329 #8 ufs_lookup+0x14b7 sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x5b sys/kern/vfs_vops.c:90 #10 vfs_lookup+0x7a6 sys/kern/vfs_lookup.c:568 #11 namei+0x63c sys/kern/vfs_lookup.c:249 #12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1853 #13 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80646cda38) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 rw_enter+0x453 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+0x81 sys/kern/vfs_vnops.c:575 #5 vget+0x1c8 sys/kern/vfs_subr.c:671 #6 cache_lookup+0x2bb sys/kern/vfs_cache.c:224 #7 ufs_lookup+0x1bc sys/ufs/ufs/ufs_lookup.c:162 #8 VOP_LOOKUP+0x5b sys/kern/vfs_vops.c:90 #9 vfs_lookup+0x7a6 sys/kern/vfs_lookup.c:568 #10 namei+0x63c sys/kern/vfs_lookup.c:249 #11 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1853 #12 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #12 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #13 Xsyscall+0x128 Process 34982 (dhclient) thread 0xffff800020ddc278 (264769) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff8291b2d8) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 solock+0x66 sys/kern/uipc_socket2.c:292 #2 soreceive+0xb3a sys/kern/uipc_socket.c:956 #3 soo_read+0x53 sys/kern/sys_socket.c:70 #4 dofilereadv+0x1a1 sys/kern/sys_generic.c:237 #5 sys_read+0x83 sys/kern/sys_generic.c:157 #6 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #6 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9538 6432K 6871K 78643K 11194 0 pcb 13 8K 8K 78643K 99 0 rtable 90 4K 7K 78643K 367 0 ifaddr 80 14K 17K 78643K 153 0 counters 43 33K 34K 78643K 51 0 ioctlops 0 0K 4K 78643K 1530 0 iov 0 0K 28K 78643K 101 0 mount 1 1K 1K 78643K 1 0 vnodes 1221 77K 77K 78643K 1419 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 11 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 68 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 485 0 sigio 0 0K 0K 78643K 2 0 proc 61 63K 95K 78643K 502 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 39 0 in_multi 47 2K 3K 78643K 141 0 ether_multi 1 0K 0K 78643K 14 0 mrt 0 0K 0K 78643K 5 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 1K 78643K 238 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 136 72K 72K 78643K 2629 0 UVM aobj 16 2K 2K 78643K 17 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 77 0 NDP 15 0K 0K 78643K 25 0 temp 144 3867K 3946K 78643K 8918 0 kqueue 3 4K 22K 78643K 56 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 5 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 53 0 51 1 0 1 1 0 8 0 rtentry 112 71 0 39 2 0 2 2 0 8 0 unpcb 120 215 0 205 1 0 1 1 0 8 0 syncache 264 13 0 13 3 2 1 1 0 8 1 tcpqe 32 2 0 2 2 1 1 1 0 8 1 tcpcb 544 193 0 189 1 0 1 1 0 8 0 inpcb 296 537 0 528 4 2 2 2 0 8 1 rttmr 72 2 0 1 2 1 1 1 0 8 0 nd6 48 18 0 15 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 ppxss 1128 4 0 4 3 3 0 1 0 8 0 pffrag 232 3 0 3 2 1 1 1 0 482 1 pffrnode 88 3 0 3 2 1 1 1 0 8 1 pffrent 40 8 0 8 2 1 1 1 0 8 1 pfosfp 40 847 0 423 5 0 5 5 0 8 0 pfosfpen 112 1429 0 714 21 0 21 21 0 8 0 pfrktable 1344 25 0 24 1 0 1 1 0 8 0 pfstitem 24 48 0 17 1 0 1 1 0 8 0 pfstkey 112 48 0 17 1 0 1 1 0 8 0 pfstate 328 48 0 17 3 0 3 3 0 8 0 pfrule 1360 30 0 22 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 242 0 70 15 0 15 15 0 8 1 art_table 32 244 0 70 2 0 2 2 0 8 0 art_node 16 70 0 41 1 0 1 1 0 8 0 sysvmsgpl 40 33 0 18 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 66 0 56 1 0 1 1 0 8 0 shmpl 112 15 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2255 0 848 89 0 89 89 0 8 0 ffsino 272 2255 0 848 96 1 95 95 0 8 0 nchpl 144 3249 0 1638 60 0 60 60 0 8 0 uvmvnodes 72 2432 0 0 45 0 45 45 0 8 0 vnodes 208 2432 0 0 128 0 128 128 0 8 0 namei 1024 9366 0 9366 5 4 1 1 0 8 1 percpumem 16 36 0 4 1 0 1 1 0 8 0 vcpupl 1984 6 0 0 1 0 1 1 0 8 0 vmpool 560 11 0 5 3 2 1 1 0 8 0 pfiaddrpl 120 6 0 6 1 0 1 1 0 8 1 scxspl 192 10138 0 10138 10 9 1 7 0 8 1 plimitpl 152 58 0 50 1 0 1 1 0 8 0 sigapl 424 722 0 669 7 0 7 7 0 8 1 futexpl 56 8830 0 8829 4 3 1 1 0 8 0 knotepl 112 164 0 145 2 1 1 2 0 8 0 kqueuepl 144 118 0 114 1 0 1 1 0 8 0 pipepl 304 135 0 125 4 3 1 2 0 8 0 fdescpl 496 685 0 669 3 0 3 3 0 8 0 filepl 152 4380 0 4277 8 3 5 5 0 8 1 lockfpl 104 127 0 126 1 0 1 1 0 8 0 lockfspl 48 46 0 45 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 20 0 9 1 0 1 1 0 8 0 ucredpl 96 506 0 495 1 0 1 1 0 8 0 zombiepl 144 669 0 669 3 2 1 1 0 8 1 processpl 984 722 0 669 8 1 7 7 0 8 0 procpl 624 1849 0 1785 6 0 6 6 0 8 0 srpgc 64 2 0 2 1 0 1 1 0 8 1 sosppl 128 9 0 9 2 1 1 1 0 8 1 sockpl 400 809 0 788 7 3 4 4 0 8 1 mcl64k 65536 262 0 0 33 0 33 33 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 25 0 0 4 1 3 3 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 199 0 0 24 0 24 24 0 8 0 mtagpl 96 46 0 0 2 0 2 2 0 8 0 mbufpl 256 442 0 0 27 1 26 26 0 8 0 bufpl 280 5841 0 139 408 0 408 408 0 8 0 anonpl 16 80627 0 64005 96 11 85 85 0 124 15 amapchunkpl 152 4304 0 4156 21 13 8 21 0 158 0 amappl16 192 3628 0 2714 70 16 54 58 0 8 8 amappl15 184 2 0 1 1 0 1 1 0 8 0 amappl14 176 28 0 21 1 0 1 1 0 8 0 amappl13 168 257 0 251 1 0 1 1 0 8 0 amappl12 160 5 0 4 2 1 1 1 0 8 0 amappl11 152 57 0 42 1 0 1 1 0 8 0 amappl10 144 267 0 257 1 0 1 1 0 8 0 amappl9 136 384 0 383 1 0 1 1 0 8 0 amappl8 128 377 0 339 2 0 2 2 0 8 0 amappl7 120 350 0 337 1 0 1 1 0 8 0 amappl6 112 29 0 25 1 0 1 1 0 8 0 amappl5 104 592 0 576 1 0 1 1 0 8 0 amappl4 96 708 0 677 1 0 1 1 0 8 0 amappl3 88 122 0 116 1 0 1 1 0 8 0 amappl2 80 4570 0 4498 2 0 2 2 0 8 0 amappl1 72 24861 0 24423 23 13 10 18 0 8 0 amappl 80 2088 0 2041 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 16 0 1 1 0 1 1 0 8 0 uaddrrnd 24 696 0 674 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 696 0 674 1 0 1 1 0 8 0 vmmpekpl 168 8981 0 8944 2 0 2 2 0 8 0 vmmpepl 168 91175 0 89082 141 33 108 112 0 357 11 vmsppl 368 695 0 674 3 0 3 3 0 8 1 pdppl 4096 1399 0 1354 10 3 7 7 0 8 1 pvpl 32 246883 0 226988 229 29 200 200 0 265 36 pmappl 232 695 0 674 4 2 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 331 0 16 9 0 9 9 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace soreceive(fffffd806f68c190,0,ffff800020e1d7d8,0,0,ffff800020e1d6e4) at soreceive+0xdcd sys/kern/uipc_socket.c:985 soo_read(fffffd8078a36130,ffff800020e1d7d8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020ddc278,6,ffff800020e1d7d8,0,ffff800020e1d8c0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020ddc278,ffff800020e1d870,ffff800020e1d8c0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e1d940) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e1d940) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdaca0, count: -6 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d70ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __sanitizer_cov_trace_cmp4(ad590,ad591) at __sanitizer_cov_trace_cmp4+0x5d kd_curproc sys/dev/kcov.c:416 [inline] __sanitizer_cov_trace_cmp4(ad590,ad591) at __sanitizer_cov_trace_cmp4+0x5d trace_cmp sys/dev/kcov.c:104 [inline] __sanitizer_cov_trace_cmp4(ad590,ad591) at __sanitizer_cov_trace_cmp4+0x5d sys/dev/kcov.c:135 __mp_lock(ffffffff8291b0d0) at __mp_lock+0x139 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff8291b0d0) at __mp_lock+0x139 sys/kern/kern_lock.c:147 pageflttrap(ffff800021f773d0,1) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 usertrap(ffff800021f773d0) at usertrap+0x21a sys/arch/amd64/amd64/trap.c:384 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffd65b0, count: -8