uvm_fault(0xffffffff828a5880, 0xfffffd0000000008, 0, 2) -> e kernel: page fault trap, code=0 Stopped at soreceive+0xdcd: movq %rbx,0x8(%r12) ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xffffffff828a5880, 0xfffffd0000000008, 0, 2) -> e soreceive(fffffd806f686320,0,ffff800020e1d4e8,0,0,ffff800020e1d3f4) at soreceive+0xdcd sys/kern/uipc_socket.c:985 end trace frame: 0xffff800020e1d430, count: 0 ddb{1}> trace soreceive(fffffd806f686320,0,ffff800020e1d4e8,0,0,ffff800020e1d3f4) at soreceive+0xdcd sys/kern/uipc_socket.c:985 soo_read(fffffd8071a57390,ffff800020e1d4e8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020ddc758,6,ffff800020e1d4e8,0,ffff800020e1d5d0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020ddc758,ffff800020e1d580,ffff800020e1d5d0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e1d650) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e1d650) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffddec0, count: -6 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800020e1d3d0 rbx 0xfffffd8064449000 rdx 0x3f36e acpi_pdirpa+0x2b1d6 rcx 0 rax 0xfffffd806f686320 r8 0xffffffff8104bfc6 soreceive+0xbe6 r9 0x3 r10 0xf717873023480657 r11 0xde78b5be440d00c6 r12 0xfffffd0000000000 r13 0 r14 0x1 r15 0 rip 0xffffffff8104c1ad soreceive+0xdcd cs 0x8 rflags 0x10286 __ALIGN_SIZE+0xf286 rsp 0xffff800020e1d2e0 ss 0x10 soreceive+0xdcd: movq %rbx,0x8(%r12) ddb{1}> show proc PROC (dhclient) pid=26927 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020ddd118,0xffff800020ddcc48 process=0xffff800020df03e8 user=0xffff800020e18000, vmspace=0xfffffd807f000170 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 18821 395885 51743 0 3 0x2 biowait syz-executor.1 51906 369325 0 0 3 0x14200 bored sosplice 72731 322943 0 0 3 0x14280 nfsidl nfsio 80989 523125 0 0 3 0x14280 nfsidl nfsio 8493 206286 0 0 3 0x14280 nfsidl nfsio 84142 205090 0 0 3 0x14280 nfsidl nfsio 36717 366003 0 0 3 0x14280 nfsidl nfsio 157 314171 0 0 3 0x14280 nfsidl nfsio 62012 444086 0 0 3 0x14280 nfsidl nfsio 23248 497278 0 0 3 0x14280 nfsidl nfsio 43324 269291 0 0 3 0x14280 nfsidl nfsio 74483 432571 0 0 3 0x14280 nfsidl nfsio 70593 57999 0 0 3 0x14280 nfsidl nfsio 52827 162155 0 0 3 0x14280 nfsidl nfsio 22378 12342 0 0 3 0x14280 nfsidl nfsio 39299 1473 0 0 3 0x14280 nfsidl nfsio 1518 244741 0 0 3 0x14280 nfsidl nfsio 79897 78243 0 0 3 0x14280 nfsidl nfsio 58035 77533 0 0 3 0x14280 nfsidl nfsio 99116 69000 0 0 3 0x14280 nfsidl nfsio 70179 209614 0 0 3 0x14280 nfsidl nfsio 65293 313543 0 0 3 0x14280 nfsidl nfsio 51743 131569 4562 0 3 0x82 thrsleep syz-fuzzer 51743 341247 4562 0 3 0x4000082 nanosleep syz-fuzzer 51743 127673 4562 0 3 0x4000082 thrsleep syz-fuzzer 51743 360177 4562 0 3 0x4000082 nanosleep syz-fuzzer 51743 361377 4562 0 3 0x4000082 thrsleep syz-fuzzer 51743 504830 4562 0 3 0x4000082 wait syz-fuzzer 51743 361134 4562 0 3 0x4000082 thrsleep syz-fuzzer 51743 279030 4562 0 3 0x4000082 thrsleep syz-fuzzer 51743 211474 4562 0 3 0x4000082 thrsleep syz-fuzzer 51743 306019 4562 0 3 0x4000082 thrsleep syz-fuzzer 4562 56316 38429 0 3 0x10008a pause ksh 38429 440439 75717 0 3 0x92 select sshd 63598 423168 1 0 3 0x100083 ttyin getty 75717 473279 1 0 3 0x80 select sshd 92600 334608 51551 74 3 0x100092 bpf pflogd 51551 401784 1 0 3 0x80 netio pflogd 46935 310286 14299 73 3 0x100090 kqread syslogd 14299 474583 1 0 3 0x100082 netio syslogd 76645 409467 1 77 2 0x100010 dhclient *59572 26927 1 0 7 0 dhclient 90239 488004 0 0 3 0x14200 bored smr 31599 170965 0 0 7 0x14200 zerothread 54494 133667 0 0 3 0x14200 aiodoned aiodoned 13672 86378 0 0 3 0x14200 syncer update 8992 174821 0 0 3 0x14200 cleaner cleaner 84251 380627 0 0 3 0x14200 reaper reaper 62433 383658 0 0 3 0x14200 pgdaemon pagedaemon 2413 5936 0 0 3 0x14200 bored crynlk 5930 400695 0 0 3 0x14200 bored crypto 86682 204077 0 0 3 0x40014200 acpi0 acpi0 95589 252762 0 0 3 0x40014200 idle1 69624 212159 0 0 3 0x14200 bored softnet 82115 108869 0 0 3 0x14200 bored systqmp 28025 397011 0 0 3 0x14200 bored systq 43968 135002 0 0 3 0x40014200 bored softclock 92919 453521 0 0 3 0x40014200 idle0 1 225241 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 18821 (syz-executor.1) thread 0xffff800020ed7af0 (395885) exclusive rrwlock inode r = 0 (0xfffffd80644625f0) #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 (0xfffffd80644622c0) #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 59572 (dhclient) thread 0xffff800020ddc758 (26927) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff828adde8) #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{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9514 6414K 6934K 78643K 11430 0 pcb 13 8K 8K 78643K 83 0 rtable 102 6K 9K 78643K 491 0 ifaddr 71 14K 17K 78643K 171 0 sysctl 2 0K 0K 78643K 2 0 counters 41 33K 34K 78643K 67 0 ioctlops 0 0K 4K 78643K 1525 0 iov 0 0K 16K 78643K 65 0 mount 1 1K 1K 78643K 1 0 vnodes 1233 78K 78K 78643K 1671 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 10 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 150 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 3 5K 25K 78643K 527 0 sigio 0 0K 0K 78643K 4 0 proc 61 63K 95K 78643K 605 0 subproc 16 1K 2K 78643K 85 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 43 0 in_multi 58 3K 3K 78643K 177 0 ether_multi 1 0K 0K 78643K 12 0 mrt 0 0K 0K 78643K 3 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 37 175K 175K 78643K 37 0 exec 0 0K 1K 78643K 280 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 119 55K 70K 78643K 2660 0 UVM aobj 23 2K 2K 78643K 25 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 67 0 NDP 11 0K 0K 78643K 38 0 temp 133 3878K 3946K 78643K 11486 0 kqueue 3 4K 9K 78643K 31 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 12 0 8 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 43 0 41 1 0 1 1 0 8 0 rtentry 112 104 0 70 2 0 2 2 0 8 0 unpcb 120 229 0 217 1 0 1 1 0 8 0 syncache 264 6 0 6 2 2 0 1 0 8 0 tcpqe 32 22 0 22 1 1 0 1 0 8 0 tcpcb 544 133 0 129 1 0 1 1 0 8 0 inpcb 296 471 0 464 2 1 1 2 0 8 0 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 29 0 26 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 ppxss 1128 2 0 2 1 1 0 1 0 8 0 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 2 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 21 0 14 1 0 1 1 0 8 0 pfstitem 24 23 0 11 1 0 1 1 0 8 0 pfstkey 112 23 0 11 1 0 1 1 0 8 0 pfstate 328 23 0 11 2 0 2 2 0 8 0 pfrule 1360 35 0 19 3 1 2 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 424 0 271 15 0 15 15 0 8 1 art_table 32 426 0 271 2 0 2 2 0 8 0 art_node 16 103 0 72 1 0 1 1 0 8 0 sysvmsgpl 40 58 0 18 1 0 1 1 0 8 0 semapl 112 148 0 138 1 0 1 1 0 8 0 shmpl 112 23 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2115 0 706 89 0 89 89 0 8 0 ffsino 272 2115 0 706 95 0 95 95 0 8 0 nchpl 144 3068 0 1478 60 0 60 60 0 8 0 uvmvnodes 72 2570 0 0 47 0 47 47 0 8 0 vnodes 208 2570 0 0 136 0 136 136 0 8 0 namei 1024 9041 0 9040 1 0 1 1 0 8 0 percpumem 16 44 0 13 1 0 1 1 0 8 0 vcpupl 1984 3 0 0 1 0 1 1 0 8 0 vmpool 560 4 0 1 1 0 1 1 0 8 0 pfiaddrpl 120 9 0 3 1 0 1 1 0 8 0 scxspl 192 10018 0 10017 8 7 1 7 0 8 0 plimitpl 152 49 0 41 1 0 1 1 0 8 0 sigapl 424 754 0 703 6 0 6 6 0 8 0 futexpl 56 6743 0 6743 1 0 1 1 0 8 1 knotepl 112 132 0 115 1 0 1 1 0 8 0 kqueuepl 144 56 0 53 1 0 1 1 0 8 0 pipelkpl 48 157 0 148 1 0 1 1 0 8 0 pipepl 120 314 0 299 1 0 1 1 0 8 0 fdescpl 496 718 0 703 3 0 3 3 0 8 0 filepl 152 4081 0 4002 5 0 5 5 0 8 1 lockfpl 104 427 0 426 1 0 1 1 0 8 0 lockfspl 48 132 0 131 1 0 1 1 0 8 0 sessionpl 112 21 0 10 1 0 1 1 0 8 0 pgrppl 48 27 0 16 1 0 1 1 0 8 0 ucredpl 96 432 0 423 1 0 1 1 0 8 0 zombiepl 144 704 0 703 1 0 1 1 0 8 0 processpl 984 754 0 703 7 0 7 7 0 8 0 procpl 624 1779 0 1719 6 0 6 6 0 8 1 sosppl 128 14 0 14 2 1 1 1 0 8 1 sockpl 400 747 0 724 4 1 3 4 0 8 0 mcl64k 65536 13 0 0 2 0 2 2 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 8 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 180 0 0 22 0 22 22 0 8 0 mtagpl 96 30 0 0 1 0 1 1 0 8 0 mbufpl 256 266 0 0 15 0 15 15 0 8 0 bufpl 280 5707 0 142 398 0 398 398 0 8 0 anonpl 16 86881 0 72717 74 5 69 72 0 124 3 amapchunkpl 152 4525 0 4378 21 10 11 20 0 158 4 amappl16 192 2981 0 2100 49 4 45 49 0 8 0 amappl15 184 95 0 93 1 0 1 1 0 8 0 amappl14 176 31 0 27 1 0 1 1 0 8 0 amappl13 168 410 0 405 1 0 1 1 0 8 0 amappl12 160 10 0 9 1 0 1 1 0 8 0 amappl11 152 125 0 110 1 0 1 1 0 8 0 amappl10 144 68 0 63 1 0 1 1 0 8 0 amappl9 136 516 0 515 1 0 1 1 0 8 0 amappl8 128 538 0 509 2 0 2 2 0 8 0 amappl7 120 186 0 171 1 0 1 1 0 8 0 amappl6 112 81 0 78 1 0 1 1 0 8 0 amappl5 104 367 0 351 1 0 1 1 0 8 0 amappl4 96 779 0 744 1 0 1 1 0 8 0 amappl3 88 361 0 355 1 0 1 1 0 8 0 amappl2 80 4614 0 4554 2 0 2 2 0 8 0 amappl1 72 25652 0 25227 23 13 10 18 0 8 0 amappl 80 2056 0 2012 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 24 0 2 1 0 1 1 0 8 0 uaddrrnd 24 722 0 704 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 722 0 704 1 0 1 1 0 8 0 vmmpekpl 168 9109 0 9073 2 0 2 2 0 8 0 vmmpepl 168 95131 0 93209 137 14 123 123 0 357 29 vmsppl 368 721 0 704 2 0 2 2 0 8 0 pdppl 4096 1451 0 1411 6 0 6 6 0 8 0 pvpl 32 262240 0 244906 178 9 169 176 0 265 11 pmappl 232 721 0 704 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 270 0 4 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82764ff0) 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_pc() at __sanitizer_cov_trace_pc+0x36 kd_curproc sys/dev/kcov.c:411 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x36 sys/dev/kcov.c:79 intr_handler(ffff800020de9730,ffff80000004a400) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge17_untramp() at Xintr_ioapic_edge17_untramp+0x19f Xspllower() at Xspllower+0x19 uvm_pagezero_thread(ffff800020ddd388) at uvm_pagezero_thread+0x64 sys/uvm/uvm_pmemrange.c:2155 end trace frame: 0x0, count: -8 ddb{0}> machine ddbcpu 1 Stopped at soreceive+0xdcd: movq %rbx,0x8(%r12) ddb{1}> trace soreceive(fffffd806f686320,0,ffff800020e1d4e8,0,0,ffff800020e1d3f4) at soreceive+0xdcd sys/kern/uipc_socket.c:985 soo_read(fffffd8071a57390,ffff800020e1d4e8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020ddc758,6,ffff800020e1d4e8,0,ffff800020e1d5d0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020ddc758,ffff800020e1d580,ffff800020e1d5d0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e1d650) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e1d650) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffddec0, count: -6