syzbot

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WARNING: fs/eventpoll.c:743 at ep_start_scan+0x2e4/0x394 fs/eventpoll.c:743, CPU#1: udevd/6206
Modules linked in:
CPU: 1 UID: 0 PID: 6206 Comm: udevd Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : ep_start_scan+0x2e4/0x394 fs/eventpoll.c:743
lr : ep_start_scan+0x2e4/0x394 fs/eventpoll.c:743
sp : ffff80009e987840
x29: ffff80009e987840 x28: 0000000000000000 x27: ffff700013d30f5c
x26: ffff0000dcbd8c00 x25: 1fffe00018a7c001 x24: dfff800000000000
x23: 0000000100000000 x22: 0000000000000000 x21: 0000000100000000
x20: ffff80009e987960 x19: ffff0000dcbd8c00 x18: 1fffe00033781890
x17: ffff80008f86e000 x16: ffff800082e5e68c x15: 0000000000000001
x14: 1ffff00013d30eb4 x13: 0000000000000000 x12: 0000000000000000
x11: ffff700013d30eb5 x10: 0000000000ff0100 x9 : 0000000000000000
x8 : ffff0000c53e0000 x7 : ffff800080eec054 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000805308c0
x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 ep_start_scan+0x2e4/0x394 fs/eventpoll.c:743 (P)
 ep_send_events fs/eventpoll.c:1782 [inline]
 ep_try_send_events+0x154/0xce8 fs/eventpoll.c:1905
 ep_poll+0x484/0xd38 fs/eventpoll.c:1970
 do_epoll_wait+0x194/0x204 fs/eventpoll.c:2461
 do_epoll_pwait+0x70/0x18c fs/eventpoll.c:2491
 __do_sys_epoll_pwait fs/eventpoll.c:2504 [inline]
 __se_sys_epoll_pwait fs/eventpoll.c:2498 [inline]
 __arm64_sys_epoll_pwait+0x1e0/0x234 fs/eventpoll.c:2498
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
irq event stamp: 2425322
hardirqs last  enabled at (2425321): [<ffff80008afa89d8>] preempt_schedule_irq+0x74/0x188 kernel/sched/core.c:7189
hardirqs last disabled at (2425322): [<ffff80008afa5c60>] __schedule+0x2f8/0x2a7c kernel/sched/core.c:6747
softirqs last  enabled at (2425238): [<ffff8000801fa738>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (2425236): [<ffff8000801fa704>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19
---[ end trace 0000000000000000 ]---