uvm_fault(0xffffffff82804020, 0xfffffd0000000008, 0, 2) -> e kernel: page fault trap, code=0 Stopped at soreceive+0x1100: movq %rbx,0x8(%r13) ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xffffffff82804020, 0xfffffd0000000008, 0, 2) -> e soreceive(fffffd806f687320,0,ffff800020e1df78,0,0,ffff800020e1de84) at soreceive+0x1100 sbsync sys/kern/uipc_socket.c:661 [inline] soreceive(fffffd806f687320,0,ffff800020e1df78,0,0,ffff800020e1de84) at soreceive+0x1100 sys/kern/uipc_socket.c:855 end trace frame: 0xffff800020e1dec0, count: 0 ddb{0}> trace soreceive(fffffd806f687320,0,ffff800020e1df78,0,0,ffff800020e1de84) at soreceive+0x1100 sbsync sys/kern/uipc_socket.c:661 [inline] soreceive(fffffd806f687320,0,ffff800020e1df78,0,0,ffff800020e1de84) at soreceive+0x1100 sys/kern/uipc_socket.c:855 soo_read(fffffd8074c462f8,ffff800020e1df78,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020ddc4e8,6,ffff800020e1df78,0,ffff800020e1e060) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020ddc4e8,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: 0x7f7ffffcc4c0, count: -6 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800020e1de60 rbx 0xfffffd8067060300 rdx 0x5e9e2 acpi_pdirpa+0x4a84a rcx 0 rax 0 r8 0xffffffff81ede421 soreceive+0x5c1 r9 0x3 r10 0xe0ace5831fd34bf3 r11 0x8ff9f3caaf989aad r12 0xaf8 r13 0xfffffd0000000000 r14 0 r15 0xfffffd806f687320 rip 0xffffffff81edef60 soreceive+0x1100 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020e1dd70 ss 0x10 soreceive+0x1100: movq %rbx,0x8(%r13) ddb{0}> show proc PROC (dhclient) pid=421288 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020ddd118,0xffff800020ddc288 process=0xffff800020df0bb0 user=0xffff800020e19000, 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 67867 408162 41417 0 7 0 syz-executor.0 67867 111123 41417 0 3 0x4000080 fsleep syz-executor.0 41417 153494 53010 0 2 0x482 syz-executor.0 97042 107109 0 0 3 0x14280 nfsidl nfsio 30010 134672 0 0 3 0x14280 nfsidl nfsio 66916 291868 0 0 3 0x14280 nfsidl nfsio 35271 442968 0 0 3 0x14280 nfsidl nfsio 29251 353622 0 0 3 0x14280 nfsidl nfsio 38284 114373 0 0 3 0x14280 nfsidl nfsio 88252 113184 0 0 3 0x14280 nfsidl nfsio 33272 277052 0 0 3 0x14280 nfsidl nfsio 7338 87908 0 0 3 0x14280 nfsidl nfsio 47900 247736 0 0 3 0x14280 nfsidl nfsio 77620 347829 0 0 3 0x14280 nfsidl nfsio 6558 254658 0 0 3 0x14280 nfsidl nfsio 85700 423408 0 0 3 0x14280 nfsidl nfsio 5114 198211 0 0 3 0x14280 nfsidl nfsio 12719 373050 0 0 3 0x14280 nfsidl nfsio 58977 489942 0 0 3 0x14280 nfsidl nfsio 10917 69481 0 0 3 0x14280 nfsidl nfsio 27780 303280 0 0 3 0x14280 nfsidl nfsio 85199 402949 0 0 3 0x14280 nfsidl nfsio 1371 132077 0 0 3 0x14280 nfsidl nfsio 41538 11932 53010 0 3 0x82 piperd syz-executor.1 23977 171243 0 0 3 0x14200 bored sosplice 53010 361375 78847 0 3 0x82 thrsleep syz-fuzzer 53010 438333 78847 0 3 0x4000082 nanosleep syz-fuzzer 53010 499531 78847 0 3 0x4000082 thrsleep syz-fuzzer 53010 523708 78847 0 3 0x4000082 thrsleep syz-fuzzer 53010 379638 78847 0 2 0x4000002 syz-fuzzer 53010 205018 78847 0 3 0x4000082 thrsleep syz-fuzzer 53010 308894 78847 0 3 0x4000082 thrsleep syz-fuzzer 53010 321793 78847 0 3 0x4000082 thrsleep syz-fuzzer 53010 523308 78847 0 3 0x4000082 kqread syz-fuzzer 53010 337838 78847 0 3 0x4000082 thrsleep syz-fuzzer 78847 186033 85772 0 3 0x10008a pause ksh 85772 225305 20964 0 3 0x92 select sshd 65718 199804 1 0 3 0x100083 ttyopn getty 20964 333290 1 0 3 0x80 select sshd 8451 203545 92168 74 3 0x100092 bpf pflogd 92168 407801 1 0 3 0x80 netio pflogd 64185 335285 61840 73 3 0x100090 kqread syslogd 61840 329530 1 0 3 0x100082 netio syslogd 26484 393282 1 77 3 0x100090 poll dhclient *15337 421288 1 0 7 0 dhclient 4417 415721 0 0 3 0x14200 bored smr 40423 413606 0 0 2 0x14200 zerothread 28990 174938 0 0 3 0x14200 aiodoned aiodoned 12684 10468 0 0 3 0x14200 syncer update 40219 231536 0 0 3 0x14200 cleaner cleaner 20040 154700 0 0 3 0x14200 reaper reaper 27262 348012 0 0 3 0x14200 pgdaemon pagedaemon 7567 295507 0 0 3 0x14200 bored crynlk 44300 247482 0 0 3 0x14200 bored crypto 98889 67996 0 0 3 0x40014200 acpi0 acpi0 37512 34043 0 0 3 0x40014200 idle1 62758 518243 0 0 3 0x14200 bored softnet 37222 58563 0 0 3 0x14200 bored systqmp 18957 117321 0 0 3 0x14200 bored systq 64846 398545 0 0 3 0x40014200 bored softclock 74423 268584 0 0 3 0x40014200 idle0 1 131295 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 15337 (dhclient) thread 0xffff800020ddc4e8 (421288) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff828c8768) #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 6429K 6816K 78643K 11460 0 pcb 13 8K 8K 78643K 126 0 rtable 105 6K 9K 78643K 977 0 ifaddr 80 15K 17K 78643K 504 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 77 0 ioctlops 0 0K 4K 78643K 1804 0 iov 0 0K 16K 78643K 98 0 mount 1 1K 1K 78643K 1 0 vnodes 1218 77K 77K 78643K 1529 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 17 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 108 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 995 0 sigio 0 0K 0K 78643K 24 0 proc 61 63K 95K 78643K 562 0 subproc 32 2K 2K 78643K 68 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 74 0 in_multi 86 4K 4K 78643K 950 0 ether_multi 1 0K 0K 78643K 16 0 mrt 0 0K 0K 78643K 7 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 258 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 147 73K 76K 78643K 3928 0 UVM aobj 45 7K 7K 78643K 47 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 93 0 NDP 13 0K 0K 78643K 56 0 temp 130 3872K 3936K 78643K 15594 0 kqueue 3 4K 12K 78643K 46 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 11 0 6 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 112 287 0 251 2 0 2 2 0 8 0 unpcb 120 367 0 357 1 0 1 1 0 8 0 syncache 264 14 0 14 4 3 1 1 0 8 1 tcpqe 32 19 0 19 2 2 0 1 0 8 0 tcpcb 544 296 0 292 2 1 1 2 0 8 0 inpcb 296 2653 0 2641 2 0 2 2 0 8 0 rttmr 72 3 0 3 2 1 1 1 0 8 1 nd6 48 202 0 199 1 0 1 1 0 8 0 pkpcb 40 6 0 6 1 0 1 1 0 8 1 ppxss 1128 4 0 4 2 2 0 1 0 8 0 pffrag 232 5 0 5 1 1 0 1 0 482 0 pffrnode 88 5 0 5 1 1 0 1 0 8 0 pffrent 40 53 0 53 1 1 0 1 0 8 0 pfosfp 40 847 0 423 5 0 5 5 0 8 0 pfosfpen 112 1430 0 714 21 0 21 21 0 8 0 pfrktable 1344 59 0 56 3 2 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfqueue 264 2 0 0 1 0 1 1 0 8 0 pfstitem 24 17 0 15 1 0 1 1 0 8 0 pfstkey 112 17 0 15 1 0 1 1 0 8 0 pfstate 328 17 0 15 2 1 1 2 0 8 0 pfsrctr 152 6 0 2 1 0 1 1 0 8 0 pfrule 1360 42 0 38 2 1 1 2 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 909 0 749 25 11 14 18 0 8 2 art_table 32 912 0 749 3 1 2 3 0 8 0 art_node 16 284 0 251 1 0 1 1 0 8 0 sysvmsgpl 40 16 0 10 2 1 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 102 0 92 1 0 1 1 0 8 0 shmpl 112 44 0 2 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2602 0 1198 89 0 89 89 0 8 0 ffsino 272 2602 0 1198 95 0 95 95 0 8 0 nchpl 144 4086 0 2496 60 0 60 60 0 8 0 uvmvnodes 72 2875 0 0 53 0 53 53 0 8 0 vnodes 208 2875 0 0 152 0 152 152 0 8 0 namei 1024 11100 0 11100 1 0 1 1 0 8 1 percpumem 16 49 0 17 1 0 1 1 0 8 0 vcpupl 1984 5 0 0 1 0 1 1 0 8 0 vmpool 560 9 0 4 1 0 1 1 0 8 0 pfiaddrpl 120 18 0 16 3 2 1 1 0 8 0 scxspl 192 12285 0 12285 10 9 1 7 0 8 1 plimitpl 152 49 0 41 1 0 1 1 0 8 0 sigapl 424 1225 0 1173 6 0 6 6 0 8 0 futexpl 56 15324 0 15323 1 0 1 1 0 8 0 knotepl 112 133 0 114 1 0 1 1 0 8 0 kqueuepl 144 129 0 124 1 0 1 1 0 8 0 pipepl 304 187 0 177 3 2 1 2 0 8 0 fdescpl 496 1189 0 1173 3 0 3 3 0 8 0 filepl 152 7100 0 6996 5 0 5 5 0 8 1 lockfpl 104 149 0 148 1 0 1 1 0 8 0 lockfspl 48 51 0 50 1 0 1 1 0 8 0 sessionpl 112 20 0 9 1 0 1 1 0 8 0 pgrppl 48 26 0 15 1 0 1 1 0 8 0 ucredpl 96 418 0 408 1 0 1 1 0 8 0 zombiepl 144 1173 0 1173 1 0 1 1 0 8 1 processpl 992 1225 0 1173 7 0 7 7 0 8 0 procpl 624 3045 0 2983 7 1 6 6 0 8 1 srpgc 64 2 0 2 1 1 0 1 0 8 0 sosppl 128 7 0 7 2 2 0 1 0 8 0 sockpl 400 3083 0 3061 7 3 4 4 0 8 1 mcl64k 65536 22 0 0 3 1 2 3 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 8 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 11 0 0 2 0 2 2 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 172 0 0 21 0 21 21 0 8 0 mtagpl 96 32 0 0 1 0 1 1 0 8 0 mbufpl 256 360 0 0 20 0 20 20 0 8 0 bufpl 280 5060 0 133 352 0 352 352 0 8 0 anonpl 16 126578 0 108644 108 22 86 86 0 124 13 amapchunkpl 152 6853 0 6695 31 23 8 20 0 158 0 amappl16 192 5510 0 4542 85 28 57 61 0 8 8 amappl15 184 117 0 115 1 0 1 1 0 8 0 amappl14 176 33 0 25 1 0 1 1 0 8 0 amappl13 168 512 0 509 1 0 1 1 0 8 0 amappl12 160 454 0 454 2 2 0 1 0 8 0 amappl11 152 59 0 44 1 0 1 1 0 8 0 amappl10 144 24 0 16 1 0 1 1 0 8 0 amappl9 136 508 0 505 1 0 1 1 0 8 0 amappl8 128 554 0 505 2 0 2 2 0 8 0 amappl7 120 142 0 126 1 0 1 1 0 8 0 amappl6 112 24 0 20 1 0 1 1 0 8 0 amappl5 104 629 0 613 1 0 1 1 0 8 0 amappl4 96 989 0 961 1 0 1 1 0 8 0 amappl3 88 580 0 574 1 0 1 1 0 8 0 amappl2 80 8175 0 8102 2 0 2 2 0 8 0 amappl1 72 33993 0 33552 23 13 10 18 0 8 0 amappl 80 3309 0 3261 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 46 0 2 1 0 1 1 0 8 0 uaddrrnd 24 1198 0 1177 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1198 0 1177 1 0 1 1 0 8 0 vmmpekpl 168 10945 0 10898 4 1 3 3 0 8 0 vmmpepl 168 149326 0 147162 171 55 116 129 0 357 20 vmsppl 368 1197 0 1177 2 0 2 2 0 8 0 pdppl 4096 2403 0 2359 6 0 6 6 0 8 0 pvpl 32 365209 0 344027 247 41 206 206 0 265 35 pmappl 232 1197 0 1177 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 292 0 20 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace soreceive(fffffd806f687320,0,ffff800020e1df78,0,0,ffff800020e1de84) at soreceive+0x1100 sbsync sys/kern/uipc_socket.c:661 [inline] soreceive(fffffd806f687320,0,ffff800020e1df78,0,0,ffff800020e1de84) at soreceive+0x1100 sys/kern/uipc_socket.c:855 soo_read(fffffd8074c462f8,ffff800020e1df78,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020ddc4e8,6,ffff800020e1df78,0,ffff800020e1e060) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020ddc4e8,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: 0x7f7ffffcc4c0, 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(df318,df319) at __sanitizer_cov_trace_cmp4+0x62 sys/dev/kcov.c:137 __mp_lock(ffffffff828c8560) at __mp_lock+0x139 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828c8560) at __mp_lock+0x139 sys/kern/kern_lock.c:147 pageflttrap(ffff800020eb6730,1) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 usertrap(ffff800020eb6730) at usertrap+0x21a sys/arch/amd64/amd64/trap.c:384 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffd0b40, count: -8