panic: kernel diagnostic assertion "va >= entry->start" failed: file "/syzkaller/managers/setuid/kernel/sys/uvm/uvm_fault.c", line 1739 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *141455 53730 32767 0x10 0x4000000 0 syz-executor 440223 96732 32767 0x10 0x4000000 1 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8343b2ab) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833e8c18,ffffffff83423c1a,6cb,ffffffff83336150) at __assert+0x29 uvm_fault_unwire_locked(fffffd806bd6cca8,400000000000,40000001a000) at uvm_fault_unwire_locked+0x4c1 uvm_fault_wire(fffffd806bd6cca8,400000000000,400000021000,3) at uvm_fault_wire+0x12d uvm_fault_unwire sys/uvm/uvm_fault.c:1702 [inline] uvm_fault_wire(fffffd806bd6cca8,400000000000,400000021000,3) at uvm_fault_wire+0x12d sys/uvm/uvm_fault.c:1684 sysctl_vslock(400000000080,20000) at sysctl_vslock+0x109 sys/kern/kern_sysctl.c:197 net_sysctl(ffff80003c519664,3,400000000080,ffff80003c519698,0,0,a46c7391bca26b7) at net_sysctl+0x5a1 sys/kern/uipc_domain.c:253 sys_sysctl(ffff80003c521738,ffff80003c5197d0,ffff80003c519720) at sys_sysctl+0x425 syscall(ffff80003c5197d0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c5197d0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc444efc60e0, count: 5 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: kernel diagnostic assertion "va >= entry->start" failed: file "/syzkaller/managers/setuid/kernel/sys/uvm/uvm_fault.c", line 1739 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8343b2ab) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833e8c18,ffffffff83423c1a,6cb,ffffffff83336150) at __assert+0x29 uvm_fault_unwire_locked(fffffd806bd6cca8,400000000000,40000001a000) at uvm_fault_unwire_locked+0x4c1 uvm_fault_wire(fffffd806bd6cca8,400000000000,400000021000,3) at uvm_fault_wire+0x12d uvm_fault_unwire sys/uvm/uvm_fault.c:1702 [inline] uvm_fault_wire(fffffd806bd6cca8,400000000000,400000021000,3) at uvm_fault_wire+0x12d sys/uvm/uvm_fault.c:1684 sysctl_vslock(400000000080,20000) at sysctl_vslock+0x109 sys/kern/kern_sysctl.c:197 net_sysctl(ffff80003c519664,3,400000000080,ffff80003c519698,0,0,a46c7391bca26b7) at net_sysctl+0x5a1 sys/kern/uipc_domain.c:253 sys_sysctl(ffff80003c521738,ffff80003c5197d0,ffff80003c519720) at sys_sysctl+0x425 syscall(ffff80003c5197d0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c5197d0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc444efc60e0, count: -10 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c519390 rbx 0xffffffff83804dc7 cpu_info_full_primary+0x2dc7 rdx 0 rcx 0xffff80003c521738 rax 0xffffffff83803ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x6860d3e99cb4d72d r11 0x4222b78ce034aa73 r12 0xffffffff83804bc8 cpu_info_full_primary+0x2bc8 r13 0 r14 0 r15 0x1 rip 0xffffffff8218a0d5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c519380 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=141455 pid=53730 tcnt=3 stat=onproc flags process=10 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c521218,0xffff8000364d22c0 process=0xffff8000388ed718 user=0xffff80003c514000, vmspace=0xfffffd806bd6cca8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 53730 38660 10563 32767 3 0x10 vmmaplk syz-executor *53730 141455 10563 32767 7 0x4000010 syz-executor 53730 18313 10563 32767 3 0x4000090 fsleep syz-executor 96732 111062 68691 32767 2 0x10 syz-executor 96732 231374 68691 32767 2 0x4000090 syz-executor 96732 440223 68691 32767 7 0x4000010 syz-executor 81119 375846 28930 32767 2 0x10 syz-executor 14374 436806 8961 32767 2 0x10 syz-executor 14374 480358 8961 32767 3 0x4000090 kqread syz-executor 3655 366808 57623 32767 2 0x10 syz-executor 3655 354759 57623 32767 2 0x4000010 syz-executor 9975 36531 60604 32767 2 0x10 syz-executor 9975 198341 60604 32767 2 0x4000010 syz-executor 62025 167904 51 32767 2 0x10 syz-executor 62025 286377 51 32767 2 0x4000010 syz-executor 73076 382633 84221 32767 2 0x10 syz-executor 73076 435722 84221 32767 3 0x4000090 fsleep syz-executor 8961 65389 81766 32767 3 0x90 nanoslp syz-executor 60604 401087 51827 32767 3 0x90 nanoslp syz-executor 68691 496821 23055 32767 3 0x90 nanoslp syz-executor 28930 28800 51169 32767 3 0x90 nanoslp syz-executor 57623 64098 3609 32767 3 0x90 nanoslp syz-executor 84221 212190 14290 32767 3 0x90 nanoslp syz-executor 51 334171 74459 32767 3 0x90 nanoslp syz-executor 10563 85071 31878 32767 3 0x90 nanoslp syz-executor 51169 14588 88854 0 3 0x82 wait syz-executor 14290 129881 88854 0 3 0x82 wait syz-executor 3609 176919 88854 0 3 0x82 wait syz-executor 51827 37937 88854 0 3 0x82 wait syz-executor 23055 333560 88854 0 3 0x82 wait syz-executor 81766 202995 88854 0 3 0x82 wait syz-executor 74459 76300 88854 0 3 0x82 wait syz-executor 31878 6071 88854 0 3 0x82 wait syz-executor 88854 136400 47022 0 3 0x82 kqread syz-executor 47022 236958 75022 0 3 0x10008a sigsusp ksh 75022 66979 50070 0 3 0x98 kqread sshd-session 50070 183299 29059 0 3 0x92 kqread sshd-session 17030 348963 1 0 3 0x100083 ttyin getty 29059 416072 1 0 3 0x88 kqread sshd 69778 198418 33733 73 3 0x1100090 kqread syslogd 33733 369039 1 0 3 0x100082 sbwait syslogd 92807 329612 1 0 3 0x100080 kqread resolvd 7810 74961 50879 77 3 0x100092 kqread dhcpleased 63295 48209 50879 77 3 0x100092 kqread dhcpleased 50879 142640 1 0 3 0x80 kqread dhcpleased 2904 511195 0 0 3 0x14200 bored smr 52505 277592 0 0 2 0x14200 zerothread 14333 425447 0 0 3 0x14200 aiodoned aiodoned 9129 486591 0 0 3 0x14200 syncer update 84137 390986 0 0 3 0x14200 cleaner cleaner 37525 136401 0 0 3 0x14200 reaper reaper 37141 352732 0 0 3 0x14200 pgdaemon pagedaemon 79581 335722 0 0 3 0x14200 bored viomb 65916 78990 0 0 3 0x40014200 acpi0 acpi0 67807 189676 0 0 3 0x40014200 idle1 35445 206945 0 0 3 0x14200 bored softnet3 70632 32223 0 0 3 0x14200 bored softnet2 51270 139602 0 0 3 0x14200 bored softnet1 54069 440045 0 0 3 0x14200 bored softnet0 46992 410022 0 0 3 0x14200 bored systqmp 12987 514927 0 0 3 0x14200 bored systq 57880 267866 0 0 3 0x14200 tmoslp softclockmp 19168 132739 0 0 3 0x40014200 tmoslp softclock 21572 264121 0 0 3 0x40014200 idle0 1 461158 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 53730 (syz-executor) thread 0xffff80003c521738 (141455) exclusive rwlock amaplk r = 0 (0xfffffd806c0262a0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 uvm_map_lock_entry+0x51 sys/uvm/uvm_map.c:464 #3 uvm_fault_unwire_locked+0x253 sys/uvm/uvm_fault.c:1758 #4 uvm_fault_wire+0x12d uvm_fault_unwire sys/uvm/uvm_fault.c:1702 [inline] #4 uvm_fault_wire+0x12d sys/uvm/uvm_fault.c:1684 #5 sysctl_vslock+0x109 sys/kern/kern_sysctl.c:197 #6 net_sysctl+0x5a1 sys/kern/uipc_domain.c:253 #7 sys_sysctl+0x425 #8 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff838fec78) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 __mp_acquire_count+0x58 #2 mi_switch+0x4b7 sys/kern/sched_bsd.c:441 #3 sleep_finish+0x24f sys/kern/kern_synch.c:414 #4 rw_do_enter_write+0x1de sys/kern/kern_rwlock.c:292 #5 uvm_map_lock_entry+0x51 sys/uvm/uvm_map.c:464 #6 uvm_fault_unwire_locked+0x253 sys/uvm/uvm_fault.c:1758 #7 uvm_fault_wire+0x12d uvm_fault_unwire sys/uvm/uvm_fault.c:1702 [inline] #7 uvm_fault_wire+0x12d sys/uvm/uvm_fault.c:1684 #8 sysctl_vslock+0x109 sys/kern/kern_sysctl.c:197 #9 net_sysctl+0x5a1 sys/kern/uipc_domain.c:253 #10 sys_sysctl+0x425 #11 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #11 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #12 Xsyscall+0x128 shared rwlock vmmaplk r = 0 (0xfffffd806bd6cda8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_read+0x3af sys/kern/kern_rwlock.c:405 #2 uvm_fault_wire+0x116 uvm_fault_unwire sys/uvm/uvm_fault.c:1701 [inline] #2 uvm_fault_wire+0x116 sys/uvm/uvm_fault.c:1684 #3 sysctl_vslock+0x109 sys/kern/kern_sysctl.c:197 #4 net_sysctl+0x5a1 sys/kern/uipc_domain.c:253 #5 sys_sysctl+0x425 #6 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 exclusive rwlock sysctllk r = 0 (0xffffffff83805a78) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 sysctl_vslock+0x45 sys/kern/kern_sysctl.c:187 #3 net_sysctl+0x5a1 sys/kern/uipc_domain.c:253 #4 sys_sysctl+0x425 #5 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #6 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10213 10957K 10966K 166960K 11294 0 pcb 17 12K 12K 166960K 17 0 rtable 236 6K 6K 166960K 347 0 pf 31 16K 16K 166960K 31 0 ifaddr 42 7K 7K 166960K 44 0 ifgroup 50 2K 2K 166960K 50 0 sysctl 1 1K 1K 166960K 1 0 counters 64 36K 36K 166960K 64 0 ioctlops 0 0K 2K 166960K 29 0 iov 0 0K 12K 166960K 1 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1332 84K 84K 166960K 1349 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 4 0 VM map 2 1K 1K 166960K 2 0 sem 12 1K 1K 166960K 13 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 26 97K 121K 166960K 177 0 sigio 0 0K 0K 166960K 1 0 proc 58 79K 127K 166960K 479 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 2 0 in_multi 99 7K 7K 166960K 99 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 229 1023K 1023K 166960K 229 0 exec 0 0K 1K 166960K 336 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 236 77K 77K 166960K 2824 0 UVM aobj 4 2K 2K 166960K 4 0 pinsyscall 47 94K 116K 166960K 1169 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 2 0 NDP 27 2K 2K 166960K 27 0 temp 34 8634K 8698K 166960K 3732 0 kqueue 14 22K 25K 166960K 30 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 24 0 0 1 0 1 1 0 8 0 rtpcb 120 35 0 31 1 0 1 1 0 8 0 rtentry 112 112 0 1 4 0 4 4 0 8 0 unpcb 144 43 0 28 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 808 15 0 10 1 0 1 1 0 8 0 arp 120 18 0 0 1 0 1 1 0 8 0 inpcb 376 78 0 67 2 0 2 2 0 8 0 nd6 136 25 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 463 0 0 29 0 29 29 0 8 0 art_table 32 464 0 0 4 0 4 4 0 8 0 art_node 16 111 0 10 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 11 0 1 1 0 1 1 0 8 0 shmpl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1588 0 87 95 0 95 95 0 8 0 ffsino 280 1588 0 87 108 0 108 108 0 8 0 nchpl 144 1813 0 138 63 0 63 63 0 8 0 uvmvnodes 80 1669 0 0 35 0 35 35 0 8 0 vnodes 216 1669 0 0 93 0 93 93 0 8 0 namei 1024 5723 0 5723 2 0 2 2 0 8 2 percpumem 16 46 0 0 1 0 1 1 0 8 0 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 6188 0 6188 9 1 8 8 1 8 8 plimitpl 152 107 0 82 2 0 2 2 0 8 1 sigapl 424 447 0 391 7 0 7 7 0 8 0 futexpl 64 495 0 493 1 0 1 1 0 8 0 knotepl 120 73 0 0 3 0 3 3 0 8 0 kqueuepl 216 97 0 84 1 0 1 1 0 8 0 pipepl 328 105 0 78 3 0 3 3 0 8 0 fdescpl 504 429 0 391 7 1 6 6 0 8 0 filepl 152 1779 0 1568 11 0 11 11 0 8 2 lockfpl 104 21 0 19 1 0 1 1 0 8 0 lockfspl 48 8 0 6 1 0 1 1 0 8 0 sessionpl 144 21 0 5 1 0 1 1 0 8 0 pgrppl 48 31 0 7 1 0 1 1 0 8 0 ucredpl 104 225 0 206 1 0 1 1 0 8 0 zombiepl 144 391 0 391 1 0 1 1 0 8 1 processpl 1176 447 0 391 5 0 5 5 0 8 0 procpl 656 516 0 451 6 0 6 6 0 8 0 sockpl 688 157 0 127 3 0 3 3 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 104 0 0 13 0 13 13 0 8 0 mcl2k 2048 16 0 0 2 0 2 2 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 194 0 0 13 0 13 13 0 8 0 bufpl 280 2271 0 124 154 0 154 154 0 8 0 anonpl 24 100967 0 97813 23 0 23 23 0 184 2 amapchunkpl 152 8705 0 8171 22 0 22 22 0 158 0 amappl16 200 2067 0 2049 5 0 5 5 0 8 4 amappl15 192 15 0 15 1 0 1 1 0 8 1 amappl14 184 98 0 88 1 0 1 1 0 8 0 amappl13 176 2 0 2 1 0 1 1 0 8 1 amappl12 168 1020 0 982 2 0 2 2 0 8 0 amappl11 160 48 0 38 1 0 1 1 0 8 0 amappl10 152 5 0 4 1 0 1 1 0 8 0 amappl9 144 247 0 247 1 0 1 1 0 8 1 amappl8 136 24 0 23 1 0 1 1 0 8 0 amappl7 128 90 0 80 1 0 1 1 0 8 0 amappl6 120 171 0 168 1 0 1 1 0 8 0 amappl5 112 113 0 107 1 0 1 1 0 8 0 amappl4 104 271 0 256 1 0 1 1 0 8 0 amappl3 96 1358 0 1234 4 0 4 4 0 8 0 amappl2 88 594 0 539 2 0 2 2 0 8 0 amappl1 80 7398 0 6854 15 0 15 15 0 8 2 amappl 88 2494 0 2307 5 0 5 5 0 92 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 72 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 429 0 391 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 429 0 391 1 0 1 1 0 8 0 vmmpekpl 168 5044 0 5011 2 0 2 2 0 8 0 vmmpepl 168 32383 0 30381 91 0 91 91 0 357 3 vmsppl 456 428 0 391 7 1 6 6 0 8 0 rwobjpl 64 13955 0 11467 43 0 43 43 0 8 1 pdppl 4096 865 0 782 107 12 95 95 0 8 12 pvpl 32 9783 0 0 79 0 79 79 0 265 0 pmappl 248 428 0 391 4 1 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 279 0 15 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8343b2ab) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833e8c18,ffffffff83423c1a,6cb,ffffffff83336150) at __assert+0x29 uvm_fault_unwire_locked(fffffd806bd6cca8,400000000000,40000001a000) at uvm_fault_unwire_locked+0x4c1 uvm_fault_wire(fffffd806bd6cca8,400000000000,400000021000,3) at uvm_fault_wire+0x12d uvm_fault_unwire sys/uvm/uvm_fault.c:1702 [inline] uvm_fault_wire(fffffd806bd6cca8,400000000000,400000021000,3) at uvm_fault_wire+0x12d sys/uvm/uvm_fault.c:1684 sysctl_vslock(400000000080,20000) at sysctl_vslock+0x109 sys/kern/kern_sysctl.c:197 net_sysctl(ffff80003c519664,3,400000000080,ffff80003c519698,0,0,a46c7391bca26b7) at net_sysctl+0x5a1 sys/kern/uipc_domain.c:253 sys_sysctl(ffff80003c521738,ffff80003c5197d0,ffff80003c519720) at sys_sysctl+0x425 syscall(ffff80003c5197d0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c5197d0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc444efc60e0, count: -10 ddb{0}> machine ddbcpu 1