last executing test programs: 0s ago: executing program 3 (id=4): socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000140)={0xffffffffffffffff, 0xffffffffffffffff}) r2 = openat$bpf(0xffffffffffffff9c, &(0x7f00000001c0), 0x40000, 0x0) flock(r1, 0x5) sysctl$kern(&(0x7f00000000c0)={0x1, 0x28}, 0x2, &(0x7f0000000200), 0x0, 0x0, 0x0) futimes(r2, &(0x7f0000000000)=[{0x1, 0x5}, {0x7}]) sysctl$kern(0x0, 0x0, 0x0, 0x0, 0x0, 0x0) r3 = shmget(0x3, 0x3000, 0xf, &(0x7f0000005000/0x3000)=nil) shmat(r3, &(0x7f0000001000/0x1000)=nil, 0x3000) getsockopt(0xffffffffffffffff, 0x11, 0x4, 0x0, 0x0) sysctl$vm(&(0x7f0000000300)={0x2, 0x1}, 0x2, 0x0, 0x0, 0x0, 0x0) sendmsg$unix(r1, &(0x7f00000000c0)={0x0, 0x0, 0x0, 0x0, &(0x7f0000000100)=ANY=[@ANYBLOB="28000000ffff000001"], 0x28}, 0x0) recvmmsg(r0, &(0x7f0000000040)={{0x0, 0x0, 0x0, 0x0, 0x0, 0x1b}, 0x102}, 0xfffffffffffffe9d, 0x1000, 0x0) kernel console output (not intermixed with test programs): Warning: Permanently added '10.128.1.106' (ED25519) to the list of known hosts. uWvARm_NIfNauG:lt (SP0xLf NfOffTe LfO80W7E3RE38D 3bON88 ,TR 0APx9 E8X, I0T ,a 1 0) ->Stopped at proc_trampoline+0xc7: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND *275867 75676 0 0x100002 0 0 sh 520928 83948 0 0 0x4000000 1K syz-executor proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7bb5aa66d640, count: 14 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 *cpu1: uvm_fault(0xffffef8073383b88, 0x98, 0, 1) -> e ddb{0}> show kasan No such command ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7bb5aa66d640, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800034f9d100 rbx 0 rdx 0 rcx 0xffff800038bb9a10 rax 0x2a r8 0xffff800034f9d030 r9 0x3 r10 0x9b0113495fbae397 r11 0x2949bf54225ce2a1 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff829494c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff800034f9d080 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{0}> show proc PROC (sh) tid=275867 pid=75676 tcnt=1 stat=onproc flags process=100002 proc=0 runpri=51, usrpri=51, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800038bb82b8,0xffffffff83af29f8 process=0xffff80002a37c9b8 user=0xffff800034f98000, vmspace=0xffffef806ccda3f0 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND *75676 275867 56459 0 7 0x100002 0 sh 50253 328001 75578 0 2 0x40 0 syz-executor 26362 453283 18710 0 2 0x100000 0 sh 18710 24281 65035 0 3 0x100002 0x88 sigsusp sh 83948 212199 64410 0 2 0 0 syz-executor 83948 520928 64410 0 7 0 0x4000000 syz-executor 80191 193404 31048 0 2 0x40 0 syz-executor 54215 332769 5821 0 2 0x2 0 arp 5821 286777 49445 0 3 0x100002 0x88 sigsusp sh 69460 204602 53141 0 2 0x2 0 arp 53141 426063 60610 0 3 0x100002 0x88 sigsusp sh 34181 293492 7456 0 2 0x2 0 ifconfig 7456 468283 83528 0 3 0x100002 0x88 sigsusp sh 49445 276123 41 0 3 0x2 0x80 wait syz-executor 65035 449714 41 0 3 0x2 0x80 wait syz-executor 75578 147725 41 0 3 0x82 0 ppwait syz-executor 56459 503347 41 0 3 0x2 0x80 wait syz-executor 64410 72638 41 0 3 0x2 0x80 nanoslp syz-executor 60610 477528 41 0 3 0x2 0x80 wait syz-executor 31048 267863 41 0 3 0x82 0 ppwait syz-executor 83528 396279 41 0 3 0x2 0x80 wait syz-executor 41 167758 33076 0 3 0x2 0x80 kqread syz-executor 33076 274008 50183 0 3 0x100002 0x88 sigsusp ksh 50183 24514 49313 0 3 0x10 0x88 kqread sshd-session 49313 455733 92493 0 3 0x12 0x80 kqread sshd-session 39820 52709 1 0 3 0x100003 0x80 ttyin getty 92493 120291 1 0 3 0 0x88 kqread sshd 76457 498763 90225 74 3 0x1100012 0x80 bpf pflogd 90225 405858 1 0 3 0 0x80 sbwait pflogd 31465 481212 41766 73 3 0x1100010 0x80 kqread syslogd 41766 358834 1 0 3 0x100002 0x80 sbwait syslogd 93170 203102 1 0 3 0x100000 0x80 kqread resolvd 62411 445985 60274 77 3 0x100012 0x80 kqread dhcpleased 69866 48203 60274 77 3 0x100012 0x80 kqread dhcpleased 60274 185227 1 0 3 0 0x80 kqread dhcpleased 11104 148125 0 0 3 0x14000 0x200 bored smr 41199 10808 0 0 2 0x14000 0x200 zerothread 75723 151062 0 0 3 0x14000 0x200 aiodoned aiodoned 78276 54215 0 0 3 0x14000 0x200 syncer update 23398 492300 0 0 3 0x14000 0x200 cleaner cleaner 12296 454854 0 0 3 0x14000 0x200 reaper reaper 10080 254169 0 0 3 0x14000 0x200 pgdaemon pagedaemon 25222 356764 0 0 3 0x14000 0x200 bored viomb 58183 140743 0 0 3 0x14000 0x40000200 acpi0 acpi0 78982 295919 0 0 3 0x14000 0x40000200 idle1 63976 502982 0 0 3 0x14000 0x200 bored softnet1 8724 343585 0 0 3 0x14000 0x200 bored softnet0 5963 105013 0 0 3 0x14000 0x200 smrbar systqmp 21902 189720 0 0 3 0x14000 0x200 bored systq 869 436763 0 0 3 0x14000 0x200 tmoslp softclockmp 53271 265233 0 0 3 0x14000 0x40000200 tmoslp softclock 61633 298206 0 0 3 0x14000 0x40000200 idle0 1 157110 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb{0}> show all locks Process 75676 (sh) thread 0xffff800038bb9a10 (275867) exclusive rwlock amaplk r = 0 (0xffffef806cd83cf8) #0 witness_lock+0x5f1 #1 rw_do_enter_write+0x419 #2 uvm_fault_check+0x8a9 #3 uvm_fault+0x106 #4 upageflttrap+0xa9 #5 usertrap+0x430 #6 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xffffef806ccda4f0) #0 witness_lock+0x5f1 #1 rw_do_enter_read+0x3e8 #2 uvmfault_lookup+0x122 #3 uvm_fault_check+0x4f #4 uvm_fault+0x106 #5 upageflttrap+0xa9 #6 usertrap+0x430 #7 recall_trap+0x8 Process 83948 (syz-executor) thread 0xffff800038bb82b8 (520928) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a08180) #0 witness_lock+0x5f1 #1 syscall+0xaf4 #2 Xsyscall+0x128 Process 5963 (systqmp) thread 0xffff800045ffe530 (105013) shared rwlock systqmp r = 0 (0xffffffff839ad588) #0 witness_lock+0x5f1 #1 taskq_thread+0x12a #2 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11051 12085K 12085K 166960K 12142 0 pcb 17 12K 12K 166960K 17 0 rtable 147 3K 4K 166960K 225 0 pf 34 17K 18K 166960K 45 0 ifaddr 31 4K 4K 166960K 33 0 ifgroup 55 2K 2K 166960K 55 0 sysctl 1 1K 9K 166960K 5 0 counters 70 37K 37K 166960K 70 0 ioctlops 0 0K 4K 166960K 1477 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1290 81K 81K 166960K 1358 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 2 0K 0K 166960K 2 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1734 201K 291K 166960K 11964 0 file desc 22 81K 97K 166960K 112 0 proc 69 115K 180K 166960K 509 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 in_multi 39 2K 2K 166960K 39 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 25 122K 122K 166960K 25 0 exec 0 0K 1K 166960K 360 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 207 179K 184K 166960K 2795 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 48 96K 108K 166960K 1216 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 16 0K 0K 166960K 16 0 temp 34 9110K 9117K 166960K 3655 0 kqueue 13 20K 20K 166960K 25 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 28 0 0 1 0 1 1 0 8 0 rtpcb 120 24 0 21 1 0 1 1 0 8 0 rtentry 176 66 0 1 3 0 3 3 0 8 0 unpcb 144 41 0 22 1 0 1 1 0 8 0 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 736 8 0 4 1 0 1 1 0 8 0 arp 136 16 0 0 1 0 1 1 0 8 0 inpcb 328 59 0 52 1 0 1 1 0 8 0 nd6 152 5 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 11 0 0 1 0 1 1 0 8 0 pfstkey 128 11 0 0 1 0 1 1 0 8 0 pfstate 448 11 0 0 2 0 2 2 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 210 0 0 14 0 14 14 0 8 0 art_table 40 211 0 0 3 0 3 3 0 8 0 art_node 32 66 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1555 0 93 92 0 92 92 0 8 0 ffsino 296 1555 0 93 113 0 113 113 0 8 0 nchpl 144 1743 0 52 63 0 63 63 0 8 0 vnodes 216 1642 0 0 92 0 92 92 0 8 0 namei 1024 5216 0 5216 1 0 1 1 0 8 1 percpumem 16 51 0 0 1 0 1 1 0 8 0 kstatmem 264 27 0 0 2 0 2 2 0 8 0 scxspl 216 6134 0 6134 4 2 2 3 1 8 2 plimitpl 152 29 0 12 1 0 1 1 0 8 0 sigapl 424 429 0 377 7 0 7 7 0 8 0 knotepl 120 50 0 0 2 0 2 2 0 8 0 kqueuepl 224 21 0 12 1 0 1 1 0 8 0 pipepl 344 126 0 99 3 0 3 3 0 8 0 fdescpl 528 413 0 377 3 0 3 3 0 8 0 filepl 160 1508 0 1296 9 0 9 9 0 8 0 lockfpl 104 6 0 4 1 0 1 1 0 8 0 lockfspl 48 4 0 2 1 0 1 1 0 8 0 sessionpl 144 24 0 15 1 0 1 1 0 8 0 pgrppl 48 32 0 15 1 0 1 1 0 8 0 ucredpl 104 82 0 69 1 0 1 1 0 8 0 zombiepl 144 377 0 377 1 0 1 1 0 8 1 processpl 1232 429 0 377 5 0 5 5 0 8 0 procpl 664 430 0 377 5 0 5 5 0 8 0 sockpl 752 124 0 95 4 0 4 4 0 8 1 mcl8k 8192 1 0 0 1 0 1 1 0 8 0 mcl4k 4096 130 0 0 17 0 17 17 0 8 0 mcl2k 2048 18 0 0 3 0 3 3 0 8 0 mextrefs 64 16 0 0 1 0 1 1 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 131 0 0 9 0 9 9 0 8 0 bufpl 272 2255 0 105 144 0 144 144 0 8 0 anonpl 32 3611 0 0 30 0 30 30 0 247 0 amapchunkpl 152 7540 0 7188 17 1 16 16 0 158 1 amappl16 200 1054 0 1046 4 0 4 4 0 8 3 amappl15 192 19 0 19 2 1 1 1 0 8 1 amappl14 184 406 0 400 1 0 1 1 0 8 0 amappl13 176 116 0 104 1 0 1 1 0 8 0 amappl12 168 658 0 629 2 0 2 2 0 8 0 amappl11 160 16 0 16 2 1 1 1 0 8 1 amappl10 152 64 0 50 1 0 1 1 0 8 0 amappl9 144 292 0 292 1 0 1 1 0 8 1 amappl8 136 92 0 89 1 0 1 1 0 8 0 amappl7 128 138 0 124 1 0 1 1 0 8 0 amappl6 120 142 0 135 1 0 1 1 0 8 0 amappl5 112 93 0 83 1 0 1 1 0 8 0 amappl4 104 279 0 259 1 0 1 1 0 8 0 amappl3 96 1332 0 1246 3 0 3 3 0 8 0 amappl2 88 514 0 451 2 0 2 2 0 8 0 amappl1 80 10157 0 9511 15 0 15 15 0 8 0 amappl 88 2127 0 2000 4 0 4 4 0 92 0 uvmvnodes 80 98 0 0 2 0 2 2 0 8 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 413 0 377 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 413 0 377 1 0 1 1 0 8 0 vmmpekpl 168 5440 0 5407 2 0 2 2 0 8 0 vmmpepl 168 35196 0 33337 87 0 87 87 0 357 5 vmsppl 488 412 0 377 5 0 5 5 0 8 0 rwobjpl 80 13123 0 12067 25 0 25 25 0 8 2 pdppl 4096 833 0 754 99 12 87 87 0 8 8 pvpl 32 9077 0 0 74 0 74 74 0 265 0 pmappl 256 412 0 377 3 0 3 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 112 396 0 15 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7bb5aa66d640, count: -1 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff80002999dff0) at x86_ipi_db+0x27 x86_ipi_handler() at x86_ipi_handler+0xd9 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 x86_bus_space_io_write_1(3f8,0,3e) at x86_bus_space_io_write_1+0x40 comcnputc(800,3e) at comcnputc+0x1ab cnputc(3e) at cnputc+0x67 db_putchar(3e) at db_putchar+0x36d kprintf() at kprintf+0x29c5 db_printf(ffffffff83460996) at db_printf+0x9b fault(ffffffff83525cda) at fault+0xa7 kpageflttrap(ffff800038bb1bb0,98) at kpageflttrap+0x37d kerntrap(ffff800038bb1bb0) at kerntrap+0x19d alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff800038bb82b8,ffffef806cbaea20,ffff800038bb1d90) at dovutimens+0x368 end trace frame: 0xffff800038bb1e00, count: 0 ddb{1}> trace x86_ipi_db(ffff80002999dff0) at x86_ipi_db+0x27 x86_ipi_handler() at x86_ipi_handler+0xd9 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 x86_bus_space_io_write_1(3f8,0,3e) at x86_bus_space_io_write_1+0x40 comcnputc(800,3e) at comcnputc+0x1ab cnputc(3e) at cnputc+0x67 db_putchar(3e) at db_putchar+0x36d kprintf() at kprintf+0x29c5 db_printf(ffffffff83460996) at db_printf+0x9b fault(ffffffff83525cda) at fault+0xa7 kpageflttrap(ffff800038bb1bb0,98) at kpageflttrap+0x37d kerntrap(ffff800038bb1bb0) at kerntrap+0x19d alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff800038bb82b8,ffffef806cbaea20,ffff800038bb1d90) at dovutimens+0x368 sys_futimes(ffff800038bb82b8,ffff800038bb1ee0,ffff800038bb1e30) at sys_futimes+0x208 syscall(ffff800038bb1ee0) at syscall+0xb17 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb9a940e39f0, count: -17