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 *318780 5285 32767 0x10 0x4000000 1K syz-executor 223288 99679 32767 0x1010 0x4080000 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8344322d) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833ecaa5,ffffffff8342c4f8,6cb,ffffffff8333f2e9) at __assert+0x29 uvm_fault_unwire_locked(fffffd806bee5918,400000000000,400000011000) at uvm_fault_unwire_locked+0x4c1 uvm_fault_unwire(fffffd806bee5918,400000000000,400000011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1702 kern_sysctl_dirs(4e,ffff80003c501518,1,4000000001c0,ffff80003c501548,0,cf5d456a8767b62d,1) at kern_sysctl_dirs+0x363 sysctl_vsunlock sys/kern/kern_sysctl.c:215 [inline] kern_sysctl_dirs(4e,ffff80003c501518,1,4000000001c0,ffff80003c501548,0,cf5d456a8767b62d,1) at kern_sysctl_dirs+0x363 sys/kern/kern_sysctl.c:432 kern_sysctl(ffff80003c501514,2,4000000001c0,ffff80003c501548,0,37,e688b920164a25a4) at kern_sysctl+0x12d sys/kern/kern_sysctl.c:526 sys_sysctl(ffff80002a33a7c8,ffff80003c501680,ffff80003c5015d0) at sys_sysctl+0x425 syscall(ffff80003c501680) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c501680) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe71752dfc20, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: kernel diagnostic assertion "va >= entry->start" failed: file "/syzkaller/managers/setuid/kernel/sys/uvm/uvm_fault.c", line 1739 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8344322d) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833ecaa5,ffffffff8342c4f8,6cb,ffffffff8333f2e9) at __assert+0x29 uvm_fault_unwire_locked(fffffd806bee5918,400000000000,400000011000) at uvm_fault_unwire_locked+0x4c1 uvm_fault_unwire(fffffd806bee5918,400000000000,400000011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1702 kern_sysctl_dirs(4e,ffff80003c501518,1,4000000001c0,ffff80003c501548,0,cf5d456a8767b62d,1) at kern_sysctl_dirs+0x363 sysctl_vsunlock sys/kern/kern_sysctl.c:215 [inline] kern_sysctl_dirs(4e,ffff80003c501518,1,4000000001c0,ffff80003c501548,0,cf5d456a8767b62d,1) at kern_sysctl_dirs+0x363 sys/kern/kern_sysctl.c:432 kern_sysctl(ffff80003c501514,2,4000000001c0,ffff80003c501548,0,37,e688b920164a25a4) at kern_sysctl+0x12d sys/kern/kern_sysctl.c:526 sys_sysctl(ffff80002a33a7c8,ffff80003c501680,ffff80003c5015d0) at sys_sysctl+0x425 syscall(ffff80003c501680) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c501680) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe71752dfc20, count: -10 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c5010f0 rbx 0xffff800029a9cdc7 rdx 0xffff800001443740 rcx 0xffff80002a33a7c8 rax 0xffff800029a9bff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x39fd2ce2748b7323 r11 0xc151ac3ab395a748 r12 0xffff800029a9cbc8 r13 0 r14 0 r15 0x1 rip 0xffffffff8261d9f5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c5010e0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=318780 pid=5285 tcnt=6 stat=onproc flags process=10 proc=4000000 runpri=32, usrpri=81, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff7c50,0xffff80002a33bc58 process=0xffff8000ffff8018 user=0xffff80003c4fc000, vmspace=0xfffffd806bee5918 estcpu=31, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 27527 68565 61141 32767 4 0x82010 syz-executor 27527 215265 61141 32767 3 0x4002010 suspend syz-executor 27527 95705 61141 32767 3 0x4082010 getblk syz-executor 27527 59417 61141 32767 4 0x4082010 syz-executor 5285 478137 16167 32767 3 0x90 nanoslp syz-executor 5285 192531 16167 32767 3 0x4000090 fsleep syz-executor * 5285 318780 16167 32767 7 0x4000010 syz-executor 5285 164099 16167 32767 2 0x4000010 syz-executor 5285 64782 16167 32767 3 0x4000010 inode syz-executor 5285 444601 16167 32767 3 0x4000090 sysctllk syz-executor 99679 22727 50868 32767 3 0x3010 suspend syz-executor 99679 223288 50868 32767 7 0x4081010 syz-executor 22342 146457 42532 0 3 0x82 sbwait sshd-session 92782 112596 0 0 3 0x14200 bored sosplice 46733 160141 34040 32767 3 0x10 getblk syz-executor 50868 18938 8401 32767 3 0x90 nanoslp syz-executor 12805 112362 68421 32767 3 0x10 biowait syz-executor 16167 331186 33718 32767 3 0x90 nanoslp syz-executor 65457 486630 5772 32767 3 0x10 getblk syz-executor 20376 326333 81959 32767 3 0x10 biowait syz-executor 5289 87864 1690 32767 3 0x10 biowait syz-executor 61141 178349 60943 32767 3 0x90 nanoslp syz-executor 34040 523523 12056 0 3 0x82 wait syz-executor 68421 415049 12056 0 3 0x82 wait syz-executor 33718 36147 12056 0 3 0x82 wait syz-executor 8401 193891 12056 0 3 0x82 wait syz-executor 5772 90643 12056 0 3 0x82 wait syz-executor 1690 202473 12056 0 3 0x82 wait syz-executor 81959 423233 12056 0 3 0x82 wait syz-executor 60943 297066 12056 0 3 0x82 wait syz-executor 12056 408155 76526 0 3 0x82 kqread syz-executor 76526 250001 10363 0 3 0x10008a sigsusp ksh 10363 386072 33289 0 3 0x98 kqread sshd-session 33289 131590 42532 0 3 0x92 kqread sshd-session 56779 192550 1 0 3 0x100083 ttyin getty 42532 205438 1 0 3 0x88 kqread sshd 49292 40177 10656 73 3 0x1100090 kqread syslogd 10656 170003 1 0 3 0x100082 sbwait syslogd 26971 140833 1 0 3 0x100080 kqread resolvd 89131 491355 33188 77 3 0x100092 kqread dhcpleased 85216 291167 33188 77 3 0x100092 kqread dhcpleased 33188 415042 1 0 3 0x80 kqread dhcpleased 71080 60514 0 0 3 0x14200 bored smr 29085 364104 0 0 2 0x14200 zerothread 99784 520387 0 0 3 0x14200 aiodoned aiodoned 45122 234373 0 0 3 0x14200 syncer update 90513 199716 0 0 3 0x14200 cleaner cleaner 46276 414424 0 0 3 0x14200 reaper reaper 25557 262105 0 0 3 0x14200 pgdaemon pagedaemon 95133 323090 0 0 3 0x14200 bored viomb 85105 108288 0 0 3 0x40014200 acpi0 acpi0 97094 305161 0 0 3 0x40014200 idle1 8871 307267 0 0 3 0x14200 bored softnet3 36250 262237 0 0 3 0x14200 bored softnet2 8142 220677 0 0 3 0x14200 bored softnet1 92872 76120 0 0 3 0x14200 bored softnet0 82959 148818 0 0 3 0x14200 bored systqmp 61203 296870 0 0 3 0x14200 bored systq 24173 364348 0 0 3 0x14200 tmoslp softclockmp 93755 173430 0 0 3 0x40014200 tmoslp softclock 29532 201510 0 0 3 0x40014200 idle0 1 92237 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 27527 (syz-executor) thread 0xffff8000ffff7730 (95705) exclusive rrwlock inode r = 0 (0xfffffd806bc73888) #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 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1230 #6 ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0x113 sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3117 #10 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806bc731f8) #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 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3102 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 Process 5285 (syz-executor) thread 0xffff80002a33a7c8 (318780) exclusive rwlock amaplk r = 0 (0xfffffd806b902020) #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_unwire+0x55 sys/uvm/uvm_fault.c:1702 #5 kern_sysctl_dirs+0x363 sysctl_vsunlock sys/kern/kern_sysctl.c:215 [inline] #5 kern_sysctl_dirs+0x363 sys/kern/kern_sysctl.c:432 #6 kern_sysctl+0x12d sys/kern/kern_sysctl.c:526 #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 shared rwlock vmmaplk r = 0 (0xfffffd806bee5a18) #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_unwire+0x3e sys/uvm/uvm_fault.c:1701 #3 kern_sysctl_dirs+0x363 sysctl_vsunlock sys/kern/kern_sysctl.c:215 [inline] #3 kern_sysctl_dirs+0x363 sys/kern/kern_sysctl.c:432 #4 kern_sysctl+0x12d sys/kern/kern_sysctl.c:526 #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 kernel_lock &kernel_lock r = 0 (0xffffffff839a4760) #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:412 #4 rw_do_enter_write+0x1de sys/kern/kern_rwlock.c:292 #5 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #6 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #7 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #8 vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287 #9 sysctl_proc_cwd+0x2b2 sys/kern/kern_sysctl.c:2352 #10 kern_sysctl_dirs+0x2ef sys/kern/kern_sysctl.c:430 #11 kern_sysctl+0x12d sys/kern/kern_sysctl.c:526 #12 sys_sysctl+0x425 #13 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 exclusive rwlock sysctllk r = 0 (0xffffffff83842018) #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 kern_sysctl_dirs+0x266 sys/kern/kern_sysctl.c:428 #4 kern_sysctl+0x12d sys/kern/kern_sysctl.c:526 #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 Process 46733 (syz-executor) thread 0xffff8000ffff6540 (160141) exclusive rrwlock inode r = 0 (0xfffffd806bc73ab8) #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 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2bd sys/kern/vfs_subr.c:694 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201 #8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #11 namei+0x7aa sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1866 #13 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806c413880) #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 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1866 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 Process 12805 (syz-executor) thread 0xffff8000ffff6cf0 (112362) exclusive rrwlock inode r = 0 (0xfffffd806bc73540) #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 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1230 #6 ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0x113 sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3117 #10 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806c413bc8) #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 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3102 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 Process 65457 (syz-executor) thread 0xffff80002a33b208 (486630) exclusive rrwlock inode r = 0 (0xfffffd806bc73ce8) #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 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1230 #6 ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0x113 sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3117 #10 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806ce1e0d0) #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 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3102 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 Process 20376 (syz-executor) thread 0xffff80002a33a538 (326333) exclusive rrwlock inode r = 0 (0xfffffd806bc739a0) #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 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1230 #6 ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0x113 sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3117 #10 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806ce1edf0) #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 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3102 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 Process 5289 (syz-executor) thread 0xffff80002a33a2a8 (87864) exclusive rrwlock inode r = 0 (0xfffffd806bc73428) #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 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2bd sys/kern/vfs_subr.c:694 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201 #8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #11 namei+0x7aa sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1866 #13 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806bc73f18) #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 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2bd sys/kern/vfs_subr.c:694 #6 cache_lookup+0x36e sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x21b sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #10 namei+0x7aa sys/kern/vfs_lookup.c:250 #11 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1866 #12 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10211 10957K 10965K 166960K 11291 0 pcb 17 12K 12K 166960K 17 0 rtable 234 6K 6K 166960K 351 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 30 0 iov 0 0K 12K 166960K 3 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1333 84K 84K 166960K 1351 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 6 0K 0K 166960K 7 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 21 77K 125K 166960K 202 0 sigio 0 0K 0K 166960K 1 0 proc 58 79K 127K 166960K 475 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 0 0K 0K 166960K 11 0 in_multi 99 7K 7K 166960K 102 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 217 970K 970K 166960K 217 0 exec 0 0K 1K 166960K 352 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 222 77K 90K 166960K 3231 0 UVM aobj 4 2K 2K 166960K 4 0 pinsyscall 44 88K 114K 166960K 1247 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 3 0 NDP 11 0K 2K 166960K 27 0 temp 39 8682K 8750K 166960K 3997 0 kqueue 14 22K 24K 166960K 38 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> 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 44 0 41 1 0 1 1 0 8 0 rtentry 160 111 0 1 5 0 5 5 0 8 0 unpcb 144 102 0 83 1 0 1 1 0 8 0 syncache 336 7 0 7 1 0 1 1 0 8 1 tcpqe 32 2 0 2 1 0 1 1 0 8 1 tcpcb 808 40 0 34 2 0 2 2 0 8 0 arp 120 18 0 0 1 0 1 1 0 8 0 ipq 40 1 0 1 1 0 1 1 0 8 1 ipqe 40 2 0 2 1 0 1 1 0 8 1 inpcb 376 130 0 121 2 0 2 2 0 8 0 nd6 136 24 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 256 452 0 0 29 0 29 29 0 8 0 art_table 32 453 0 0 4 0 4 4 0 8 0 art_node 16 110 0 10 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 1 1 0 1 1 0 8 0 semapl 112 4 0 0 1 0 1 1 0 8 0 shmpl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1629 0 126 95 0 95 95 0 8 0 ffsino 280 1630 0 126 108 0 108 108 0 8 0 nchpl 144 1907 0 236 63 0 63 63 0 8 0 uvmvnodes 80 1711 0 0 35 0 35 35 0 8 0 vnodes 216 1711 0 0 96 0 96 96 0 8 0 namei 1024 5765 0 5759 1 0 1 1 0 8 0 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 6326 0 6323 3 1 2 2 1 8 1 plimitpl 152 80 0 55 2 0 2 2 0 8 0 sigapl 424 487 0 434 8 0 8 8 0 8 1 futexpl 64 1048 0 1047 1 0 1 1 0 8 0 knotepl 120 65 0 0 2 0 2 2 0 8 0 kqueuepl 216 48 0 38 1 0 1 1 0 8 0 pipepl 328 113 0 85 3 0 3 3 0 8 0 fdescpl 504 468 0 434 7 1 6 6 0 8 0 filepl 152 1804 0 1526 11 0 11 11 0 8 0 lockfpl 104 24 0 22 1 0 1 1 0 8 0 lockfspl 48 11 0 9 1 0 1 1 0 8 0 sessionpl 144 25 0 8 1 0 1 1 0 8 0 pgrppl 48 34 0 9 1 0 1 1 0 8 0 ucredpl 104 252 0 233 1 0 1 1 0 8 0 zombiepl 144 434 0 434 1 0 1 1 0 8 1 processpl 1176 487 0 434 5 0 5 5 0 8 0 procpl 656 591 0 529 7 0 7 7 0 8 1 sockpl 688 278 0 247 4 0 4 4 0 8 0 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 131 0 0 17 0 17 17 0 8 0 mcl2k 2048 18 0 0 3 0 3 3 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 219 0 0 14 0 14 14 0 8 0 bufpl 280 2436 0 123 166 0 166 166 0 8 0 anonpl 24 84892 0 78491 39 0 39 39 0 184 0 amapchunkpl 152 10048 0 9578 39 0 39 39 0 158 15 amappl16 200 1169 0 952 12 0 12 12 0 8 0 amappl15 192 4 0 4 1 1 0 1 0 8 0 amappl14 184 111 0 100 1 0 1 1 0 8 0 amappl13 176 41 0 41 1 1 0 1 0 8 0 amappl12 168 1080 0 1046 2 0 2 2 0 8 0 amappl11 160 43 0 33 1 0 1 1 0 8 0 amappl10 152 2 0 2 1 1 0 1 0 8 0 amappl9 144 253 0 253 1 1 0 1 0 8 0 amappl8 136 71 0 70 1 0 1 1 0 8 0 amappl7 128 97 0 85 1 0 1 1 0 8 0 amappl6 120 181 0 177 1 0 1 1 0 8 0 amappl5 112 112 0 105 1 0 1 1 0 8 0 amappl4 104 297 0 282 1 0 1 1 0 8 0 amappl3 96 1619 0 1508 4 0 4 4 0 8 0 amappl2 88 653 0 592 2 0 2 2 0 8 0 amappl1 80 8726 0 8102 15 0 15 15 0 8 1 amappl 88 2863 0 2695 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 24 468 0 434 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 468 0 434 1 0 1 1 0 8 0 vmmpekpl 168 5682 0 5643 3 0 3 3 0 8 0 vmmpepl 168 35838 0 33704 105 0 105 105 0 357 5 vmsppl 456 467 0 434 7 1 6 6 0 8 0 rwobjpl 64 14630 0 11800 46 0 46 46 0 8 0 pdppl 4096 943 0 868 115 28 87 97 0 8 12 pvpl 32 13558 0 0 110 0 110 110 0 265 0 pmappl 248 467 0 434 4 1 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 293 0 31 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83894ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff839a4558) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff839a4558) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff80003c53ac40,ffff800000079f00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:153 uvm_fault_check(ffff80003c53aea8,ffff80003c53aee0,ffff80003c53af10,0) at uvm_fault_check+0x163 sys/uvm/uvm_fault.c:730 uvm_fault(fffffd806c0eac98,c81000,0,2) at uvm_fault+0x106 sys/uvm/uvm_fault.c:666 kpageflttrap(ffff80003c53b050,c81ca0) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80003c53b050) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x57 syscall(ffff80003c53b4a0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c53b4a0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 end trace frame: 0xffff80003c53b520, count: 0 ddb{0}> trace x86_ipi_db(ffffffff83894ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff839a4558) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff839a4558) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff80003c53ac40,ffff800000079f00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:153 uvm_fault_check(ffff80003c53aea8,ffff80003c53aee0,ffff80003c53af10,0) at uvm_fault_check+0x163 sys/uvm/uvm_fault.c:730 uvm_fault(fffffd806c0eac98,c81000,0,2) at uvm_fault+0x106 sys/uvm/uvm_fault.c:666 kpageflttrap(ffff80003c53b050,c81ca0) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80003c53b050) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x57 syscall(ffff80003c53b4a0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c53b4a0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x28eb5fae880, count: -15 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8344322d) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833ecaa5,ffffffff8342c4f8,6cb,ffffffff8333f2e9) at __assert+0x29 uvm_fault_unwire_locked(fffffd806bee5918,400000000000,400000011000) at uvm_fault_unwire_locked+0x4c1 uvm_fault_unwire(fffffd806bee5918,400000000000,400000011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1702 kern_sysctl_dirs(4e,ffff80003c501518,1,4000000001c0,ffff80003c501548,0,cf5d456a8767b62d,1) at kern_sysctl_dirs+0x363 sysctl_vsunlock sys/kern/kern_sysctl.c:215 [inline] kern_sysctl_dirs(4e,ffff80003c501518,1,4000000001c0,ffff80003c501548,0,cf5d456a8767b62d,1) at kern_sysctl_dirs+0x363 sys/kern/kern_sysctl.c:432 kern_sysctl(ffff80003c501514,2,4000000001c0,ffff80003c501548,0,37,e688b920164a25a4) at kern_sysctl+0x12d sys/kern/kern_sysctl.c:526 sys_sysctl(ffff80002a33a7c8,ffff80003c501680,ffff80003c5015d0) at sys_sysctl+0x425 syscall(ffff80003c501680) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c501680) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe71752dfc20, count: 5 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8344322d) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833ecaa5,ffffffff8342c4f8,6cb,ffffffff8333f2e9) at __assert+0x29 uvm_fault_unwire_locked(fffffd806bee5918,400000000000,400000011000) at uvm_fault_unwire_locked+0x4c1 uvm_fault_unwire(fffffd806bee5918,400000000000,400000011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1702 kern_sysctl_dirs(4e,ffff80003c501518,1,4000000001c0,ffff80003c501548,0,cf5d456a8767b62d,1) at kern_sysctl_dirs+0x363 sysctl_vsunlock sys/kern/kern_sysctl.c:215 [inline] kern_sysctl_dirs(4e,ffff80003c501518,1,4000000001c0,ffff80003c501548,0,cf5d456a8767b62d,1) at kern_sysctl_dirs+0x363 sys/kern/kern_sysctl.c:432 kern_sysctl(ffff80003c501514,2,4000000001c0,ffff80003c501548,0,37,e688b920164a25a4) at kern_sysctl+0x12d sys/kern/kern_sysctl.c:526 sys_sysctl(ffff80002a33a7c8,ffff80003c501680,ffff80003c5015d0) at sys_sysctl+0x425 syscall(ffff80003c501680) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c501680) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe71752dfc20, count: -10