€ ý€ ýuvm_fault(0xffffffff827bcac0, 0xfffffd0000000008, 0, 1) -> e kernel: page fault trap, code=0 Stopped at soreceive+0x1110: cmpq $0,0x8(%rbx) ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xffffffff827bcac0, 0xfffffd0000000008, 0, 1) -> e soreceive(fffffd806f687000,0,ffff800020e1df78,0,0,ffff800020e1de84) at soreceive+0x1110 sbsync sys/kern/uipc_socket.c:675 [inline] soreceive(fffffd806f687000,0,ffff800020e1df78,0,0,ffff800020e1de84) at soreceive+0x1110 sys/kern/uipc_socket.c:855 end trace frame: 0xffff800020e1dec0, count: 0 ddb{0}> trace soreceive(fffffd806f687000,0,ffff800020e1df78,0,0,ffff800020e1de84) at soreceive+0x1110 sbsync sys/kern/uipc_socket.c:675 [inline] soreceive(fffffd806f687000,0,ffff800020e1df78,0,0,ffff800020e1de84) at soreceive+0x1110 sys/kern/uipc_socket.c:855 soo_read(fffffd806fc365f0,ffff800020e1df78,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020ddc008,6,ffff800020e1df78,0,ffff800020e1e060) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020ddc008,ffff800020e1e010,ffff800020e1e060) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e1e0e0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e1e0e0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff40f0, count: -6 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800020e1de60 rbx 0xfffffd0000000000 rdx 0x622b4 acpi_pdirpa+0x4e11c rcx 0 rax 0 r8 0xffffffff8170c1a1 soreceive+0x5c1 r9 0x3 r10 0x671233376e366702 r11 0x3967a1df3ded2f17 r12 0x19c8 __ALIGN_SIZE+0x9c8 r13 0 r14 0 r15 0xfffffd806f687000 rip 0xffffffff8170ccf0 soreceive+0x1110 cs 0x8 rflags 0x10286 __ALIGN_SIZE+0xf286 rsp 0xffff800020e1dd70 ss 0x10 soreceive+0x1110: cmpq $0,0x8(%rbx) ddb{0}> show proc PROC (dhclient) pid=468184 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020ddd118,0xffff800020ddc768 process=0xffff800020df0010 user=0xffff800020e19000, vmspace=0xfffffd807efff170 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 33443 355766 65158 0 7 0 syz-executor.0 33443 309401 65158 0 3 0x4000080 fsleep syz-executor.0 72046 277989 0 0 3 0x14200 acct acct 7649 155933 0 0 3 0x14280 nfsidl nfsio 74373 364497 0 0 3 0x14280 nfsidl nfsio 32874 392274 0 0 3 0x14280 nfsidl nfsio 98161 217207 0 0 3 0x14280 nfsidl nfsio 54665 368529 0 0 3 0x14280 nfsidl nfsio 39892 163663 0 0 3 0x14280 nfsidl nfsio 40060 508835 0 0 3 0x14280 nfsidl nfsio 89472 79951 0 0 3 0x14280 nfsidl nfsio 85719 389189 0 0 3 0x14280 nfsidl nfsio 31252 346671 0 0 3 0x14280 nfsidl nfsio 26750 292452 0 0 3 0x14280 nfsidl nfsio 98656 402005 0 0 3 0x14280 nfsidl nfsio 38838 30682 0 0 3 0x14280 nfsidl nfsio 4667 320904 0 0 3 0x14280 nfsidl nfsio 87529 452521 0 0 3 0x14280 nfsidl nfsio 56138 410925 0 0 3 0x14280 nfsidl nfsio 14427 468542 0 0 3 0x14280 nfsidl nfsio 50348 33443 0 0 3 0x14280 nfsidl nfsio 26334 252052 0 0 3 0x14280 nfsidl nfsio 77289 228312 0 0 3 0x14280 nfsidl nfsio 12752 297858 0 0 3 0x14200 bored sosplice 25468 88294 15241 0 2 0x2 syz-executor.1 65158 416523 15241 0 2 0x482 syz-executor.0 15241 457379 44504 0 3 0x82 thrsleep syz-fuzzer 15241 271644 44504 0 3 0x4000082 nanosleep syz-fuzzer 15241 212527 44504 0 3 0x4000082 thrsleep syz-fuzzer 15241 503424 44504 0 3 0x4000082 thrsleep syz-fuzzer 15241 49037 44504 0 3 0x4000082 nanosleep syz-fuzzer 15241 215488 44504 0 3 0x4000082 thrsleep syz-fuzzer 15241 319426 44504 0 3 0x4000082 thrsleep syz-fuzzer 15241 317204 44504 0 3 0x4000082 thrsleep syz-fuzzer 15241 330935 44504 0 3 0x4000082 kqread syz-fuzzer 15241 149109 44504 0 3 0x4000082 thrsleep syz-fuzzer 44504 119745 75068 0 3 0x10008a pause ksh 75068 493320 93592 0 3 0x92 select sshd 80906 131455 1 0 3 0x100083 ttyin getty 93592 79669 1 0 3 0x80 select sshd 48038 336106 27782 74 3 0x100092 bpf pflogd 27782 277752 1 0 3 0x80 netio pflogd 2399 254454 71837 73 3 0x100090 kqread syslogd 71837 451330 1 0 3 0x100082 netio syslogd 54072 157840 1 77 3 0x100090 poll dhclient *69382 468184 1 0 7 0 dhclient 46838 374349 0 0 3 0x14200 bored smr 45673 294120 0 0 3 0x14200 pgzero zerothread 32026 418887 0 0 3 0x14200 aiodoned aiodoned 7177 203333 0 0 3 0x14200 syncer update 12960 483745 0 0 3 0x14200 cleaner cleaner 21832 421800 0 0 3 0x14200 reaper reaper 35557 64017 0 0 3 0x14200 pgdaemon pagedaemon 37528 59059 0 0 3 0x14200 bored crynlk 67986 83968 0 0 3 0x14200 bored crypto 7179 184588 0 0 3 0x40014200 acpi0 acpi0 55991 507702 0 0 3 0x40014200 idle1 51547 510255 0 0 3 0x14200 bored softnet 88431 193280 0 0 3 0x14200 bored systqmp 78399 56388 0 0 3 0x14200 bored systq 90536 22410 0 0 3 0x40014200 bored softclock 48328 280927 0 0 3 0x40014200 idle0 1 367896 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 25468 (syz-executor.1) thread 0xffff800020ddd5f8 (88294) exclusive rrwlock inode r = 0 (0xfffffd806b1f2c48) #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 ufs_ihashins+0x45 sys/ufs/ufs/ufs_ihash.c:140 #4 ffs_vget+0x13e sys/ufs/ffs/ffs_vfsops.c:1358 #5 ffs_inode_alloc+0x1e2 sys/ufs/ffs/ffs_alloc.c:394 #6 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162 #7 VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:450 #8 domkdirat+0x121 sys/kern/vfs_syscalls.c:3051 #9 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #9 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #10 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806b1f23c8) #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 vfs_lookup+0xe6 sys/kern/vfs_lookup.c:419 #6 namei+0x63c sys/kern/vfs_lookup.c:249 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3036 #8 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #9 Xsyscall+0x128 Process 69382 (dhclient) thread 0xffff800020ddc008 (468184) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff828b1ca0) #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+0x114 sys/kern/uipc_socket.c:737 #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 9525 6423K 6937K 78643K 11257 0 pcb 13 8K 8K 78643K 77 0 rtable 122 7K 9K 78643K 1211 0 ifaddr 79 15K 15K 78643K 658 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 49 0 ioctlops 0 0K 4K 78643K 4209 0 iov 0 0K 16K 78643K 1060 0 mount 1 1K 1K 78643K 1 0 vnodes 1222 77K 77K 78643K 1411 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 7 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 102 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 2393 0 sigio 0 0K 0K 78643K 8 0 proc 62 63K 95K 78643K 463 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 29 0 in_multi 40 2K 2K 78643K 1371 0 ether_multi 1 0K 0K 78643K 9 0 mrt 0 0K 0K 78643K 13 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 43 201K 201K 78643K 43 0 exec 0 0K 1K 78643K 241 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 123 39K 43K 78643K 7346 0 UVM aobj 30 2K 2K 78643K 32 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 10 0 NDP 13 0K 0K 78643K 184 0 temp 132 3871K 3935K 78643K 13507 0 kqueue 3 4K 12K 78643K 21 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 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 34 0 32 1 0 1 1 0 8 0 rtentry 112 388 0 346 2 0 2 2 0 8 0 unpcb 120 210 0 200 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 1201 0 1201 1 1 0 1 0 8 0 tcpcb 544 990 0 986 2 1 1 2 0 8 0 inpcb 296 4734 0 4724 4 2 2 2 0 8 1 rttmr 72 6 0 6 2 2 0 1 0 8 0 nd6 48 334 0 328 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 ppxss 1128 1 0 1 1 1 0 1 0 8 0 pfstscr 40 4 0 4 1 1 0 1 0 8 0 pffrag 232 2 0 2 1 1 0 1 0 482 0 pffrnode 88 2 0 2 1 1 0 1 0 8 0 pffrent 40 51 0 51 2 2 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 125 0 118 1 0 1 1 0 8 0 pfstitem 24 44 0 36 1 0 1 1 0 8 0 pfstkey 112 46 0 38 1 0 1 1 0 8 0 pfstate 328 44 0 36 2 1 1 2 0 8 0 pfrule 1360 1241 0 1189 6 1 5 5 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 5470 0 5252 14 0 14 14 0 8 0 art_table 32 5471 0 5252 2 0 2 2 0 8 0 art_node 16 387 0 349 1 0 1 1 0 8 0 sysvmsgpl 40 21 0 10 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 98 0 88 1 0 1 1 0 8 0 shmpl 112 29 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3900 0 2496 89 0 89 89 0 8 0 ffsino 272 3900 0 2496 94 0 94 94 0 8 0 nchpl 144 8654 0 7045 60 0 60 60 0 8 0 uvmvnodes 72 4091 0 0 75 0 75 75 0 8 0 vnodes 208 4091 0 0 216 0 216 216 0 8 0 namei 1024 23191 0 23190 2 1 1 1 0 8 0 percpumem 16 35 0 3 1 0 1 1 0 8 0 vcpupl 1984 1 0 0 1 0 1 1 0 8 0 vmpool 560 5 0 4 3 2 1 1 0 8 0 pfiaddrpl 120 1806 0 1733 3 0 3 3 0 8 0 scxspl 192 19867 0 19867 8 7 1 6 0 8 1 plimitpl 152 302 0 294 1 0 1 1 0 8 0 sigapl 424 2632 0 2579 7 0 7 7 0 8 1 futexpl 56 31825 0 31824 1 0 1 1 0 8 0 knotepl 112 83 0 64 1 0 1 1 0 8 0 kqueuepl 144 54 0 50 1 0 1 1 0 8 0 pipepl 304 165 0 155 3 2 1 2 0 8 0 fdescpl 496 2593 0 2577 3 0 3 3 0 8 0 filepl 152 17109 0 17007 6 1 5 5 0 8 1 lockfpl 104 98 0 97 1 0 1 1 0 8 0 lockfspl 48 38 0 37 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 24 0 13 1 0 1 1 0 8 0 ucredpl 96 1361 0 1352 1 0 1 1 0 8 0 zombiepl 144 2579 0 2579 1 0 1 1 0 8 1 processpl 992 2632 0 2579 7 0 7 7 0 8 0 procpl 624 6589 0 6526 7 1 6 6 0 8 0 srpgc 64 2 0 2 1 1 0 1 0 8 0 sosppl 128 5 0 5 2 2 0 1 0 8 0 sockpl 400 4980 0 4959 7 3 4 4 0 8 1 mcl64k 65536 260 0 0 33 23 10 33 0 8 1 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 10 0 0 1 0 1 1 0 8 0 mcl9k 9216 6 0 0 1 0 1 1 0 8 0 mcl8k 8192 36 0 0 3 0 3 3 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 243 0 0 30 2 28 30 0 8 0 mtagpl 96 55 0 0 2 0 2 2 0 8 0 mbufpl 256 666 0 0 35 0 35 35 0 8 0 bufpl 280 5921 0 132 414 0 414 414 0 8 0 anonpl 16 192561 0 176431 93 20 73 79 0 124 6 amapchunkpl 152 11607 0 11469 11 3 8 11 0 158 0 amappl16 192 10058 0 9161 64 17 47 55 0 8 2 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 34 0 27 1 0 1 1 0 8 0 amappl13 168 1318 0 1314 1 0 1 1 0 8 0 amappl12 160 1296 0 1294 2 1 1 1 0 8 0 amappl11 152 59 0 43 1 0 1 1 0 8 0 amappl10 144 19 0 15 1 0 1 1 0 8 0 amappl9 136 1464 0 1461 1 0 1 1 0 8 0 amappl8 128 1431 0 1394 3 1 2 2 0 8 0 amappl7 120 116 0 105 1 0 1 1 0 8 0 amappl6 112 26 0 20 1 0 1 1 0 8 0 amappl5 104 1205 0 1189 1 0 1 1 0 8 0 amappl4 96 1784 0 1754 1 0 1 1 0 8 0 amappl3 88 1422 0 1415 1 0 1 1 0 8 0 amappl2 80 20735 0 20663 2 0 2 2 0 8 0 amappl1 72 55097 0 54666 23 13 10 18 0 8 0 amappl 80 6822 0 6776 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 31 0 2 1 0 1 1 0 8 0 uaddrrnd 24 2598 0 2581 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2598 0 2581 1 0 1 1 0 8 0 vmmpekpl 168 20628 0 20587 4 1 3 3 0 8 0 vmmpepl 168 309145 0 307075 126 30 96 108 0 357 2 vmsppl 368 2597 0 2581 2 0 2 2 0 8 0 pdppl 4096 5203 0 5163 6 0 6 6 0 8 0 pvpl 32 634605 0 615177 221 39 182 188 0 265 24 pmappl 232 2597 0 2581 4 2 2 2 0 8 1 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 338 0 34 10 0 10 10 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace soreceive(fffffd806f687000,0,ffff800020e1df78,0,0,ffff800020e1de84) at soreceive+0x1110 sbsync sys/kern/uipc_socket.c:675 [inline] soreceive(fffffd806f687000,0,ffff800020e1df78,0,0,ffff800020e1de84) at soreceive+0x1110 sys/kern/uipc_socket.c:855 soo_read(fffffd806fc365f0,ffff800020e1df78,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020ddc008,6,ffff800020e1df78,0,ffff800020e1e060) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020ddc008,ffff800020e1e010,ffff800020e1e060) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e1e0e0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e1e0e0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff40f0, 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(14b50e,14b50f) at __sanitizer_cov_trace_cmp4+0x5d kd_curproc sys/dev/kcov.c:416 [inline] __sanitizer_cov_trace_cmp4(14b50e,14b50f) at __sanitizer_cov_trace_cmp4+0x5d trace_cmp sys/dev/kcov.c:104 [inline] __sanitizer_cov_trace_cmp4(14b50e,14b50f) at __sanitizer_cov_trace_cmp4+0x5d sys/dev/kcov.c:135 __mp_lock(ffffffff828b1a98) at __mp_lock+0x139 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828b1a98) at __mp_lock+0x139 sys/kern/kern_lock.c:147 pageflttrap(ffff800021efab50,1) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 usertrap(ffff800021efab50) at usertrap+0x21a sys/arch/amd64/amd64/trap.c:384 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffdb3b0, count: -8