Hello, syzbot found the following issue on: HEAD commit: 13882369ceb9 Merge tag 'hid-for-linus-2024092601' of git:/.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=17334507980000 kernel config: https://syzkaller.appspot.com/x/.config?x=f1af1dc2e43cf22f dashboard link: https://syzkaller.appspot.com/bug?extid=00a022dc9979d67df050 compiler: aarch64-linux-gnu-gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: arm64 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/384ffdcca292/non_bootable_disk-13882369.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/a1a2db588faf/vmlinux-13882369.xz kernel image: https://storage.googleapis.com/syzbot-assets/a3f594a63d31/Image-13882369.gz.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+00a022dc9979d67df050@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ WARNING: CPU: 1 PID: 34 at kernel/sched/deadline.c:1995 enqueue_dl_entity+0x47c/0x590 kernel/sched/deadline.c:2029 Modules linked in: CPU: 1 UID: 0 PID: 34 Comm: kcompactd0 Tainted: G B 6.11.0-syzkaller-10729-g13882369ceb9 #0 Tainted: [B]=BAD_PAGE Hardware name: linux,dummy-virt (DT) pstate: a14000c9 (NzCv daIF +PAN -UAO -TCO +DIT -SSBS BTYPE=--) pc : enqueue_dl_entity+0x47c/0x590 kernel/sched/deadline.c:1995 lr : dl_server_start+0x44/0x12c kernel/sched/deadline.c:1650 sp : ffff800082eab970 x29: ffff800082eab970 x28: f3f0000004f45c00 x27: 0000000000000000 x26: 0000000000000001 x25: 0000000000000000 x24: 0000000000000048 x23: fff000007f8ee800 x22: 0000000000000001 x21: 000000000016e360 x20: 0000000000000001 x19: fff000007f8ef168 x18: 0000000000000000 x17: fff07ffffd1e0000 x16: ffff800080008000 x15: 0000000000000000 x14: 00000000000002e1 x13: 0000000000000377 x12: 0000000000000001 x11: fff000007f8ee880 x10: 0000000000000001 x9 : 0000000000000048 x8 : 0000000000100000 x7 : 0000000000000001 x6 : f3f0000004f45bc0 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000 x2 : 0000000000000001 x1 : 0000000000000001 x0 : 0000000000000001 Call trace: enqueue_dl_entity+0x47c/0x590 kernel/sched/deadline.c:2029 dl_server_start+0x44/0x12c kernel/sched/deadline.c:1650 enqueue_task_fair+0x11c/0x3a4 kernel/sched/fair.c:7040 enqueue_task+0x58/0xbc kernel/sched/core.c:2020 activate_task+0x68/0x80 kernel/sched/core.c:2062 attach_task+0x4c/0x74 kernel/sched/fair.c:9631 attach_tasks kernel/sched/fair.c:9666 [inline] sched_balance_rq+0x488/0xc74 kernel/sched/fair.c:11743 sched_balance_newidle.constprop.0+0x1b0/0x3e4 kernel/sched/fair.c:12785 pick_next_task_fair+0x50/0x320 kernel/sched/fair.c:8933 __pick_next_task kernel/sched/core.c:5955 [inline] pick_next_task kernel/sched/core.c:6477 [inline] __schedule+0x158/0x8e8 kernel/sched/core.c:6629 __schedule_loop kernel/sched/core.c:6752 [inline] schedule+0x34/0x104 kernel/sched/core.c:6767 schedule_timeout+0x80/0xf4 kernel/time/timer.c:2615 kcompactd+0x204/0x374 mm/compaction.c:3181 kthread+0x114/0x118 kernel/kthread.c:389 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860 ---[ end trace 0000000000000000 ]--- --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
