------------[ cut here ]------------ WARNING: CPU: 3 PID: 14743 at drivers/rtc/rtc-mc146818-lib.c:25 mc146818_get_time+0x665/0x860 drivers/rtc/rtc-mc146818-lib.c:25 Modules linked in: CPU: 3 PID: 14743 Comm: systemd-udevd Not tainted 5.11.0-rc6-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 RIP: 0010:mc146818_get_time+0x665/0x860 drivers/rtc/rtc-mc146818-lib.c:25 Code: eb 4e e8 be f9 c9 fb 4c 89 e6 48 c7 c7 e0 6b b9 8b e8 af 0d 54 03 bf 58 89 41 00 e8 15 b2 33 fe e9 d5 f9 ff ff e8 9b f9 c9 fb <0f> 0b 48 c7 c7 e0 6b b9 8b 4c 89 e6 45 31 e4 e8 87 0d 54 03 ba 24 RSP: 0000:ffffc9000986fc90 EFLAGS: 00010046 RAX: 0000000080010001 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: ffff8880176a9bc0 RSI: ffffffff85a8d7c5 RDI: 0000000000000003 RBP: ffffc9000986fd28 R08: 0000000000000001 R09: 0000000000000022 R10: ffffffff85a8d1c2 R11: 0000000000000000 R12: 0000000000000046 R13: 0000000000000022 R14: ffffc9000986fe40 R15: ffff888010d9e000 FS: 00007fc11cb798c0(0000) GS:ffff88802cd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002de22000 CR3: 0000000058d2a000 CR4: 0000000000150ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hpet_rtc_interrupt+0x2b0/0x380 arch/x86/kernel/hpet.c:1358 __handle_irq_event_percpu+0x303/0x8f0 kernel/irq/handle.c:156 handle_irq_event_percpu kernel/irq/handle.c:196 [inline] handle_irq_event+0x102/0x290 kernel/irq/handle.c:213 handle_edge_irq+0x25f/0xd00 kernel/irq/chip.c:819 run_irq_on_irqstack_cond arch/x86/include/asm/irq_stack.h:103 [inline] handle_irq arch/x86/kernel/irq.c:230 [inline] __common_interrupt arch/x86/kernel/irq.c:249 [inline] common_interrupt+0x96/0x200 arch/x86/kernel/irq.c:239 asm_common_interrupt+0x1e/0x40 arch/x86/include/asm/idtentry.h:620 RIP: 0033:0x7fc11b98b510 Code: 8d 0d 44 b5 0e 00 48 8d 35 94 75 0e 00 48 8d 3d ee b0 0e 00 ba 62 0c 00 00 e8 8c b4 ff ff 48 89 fb e9 ee fd ff ff 0f 1f 40 00 <48> 8b 05 e1 d9 31 00 48 8b 00 48 85 c0 75 79 48 85 ff 74 7c 48 8b RSP: 002b:00007fffcfb00b38 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000010000 RCX: 00007fc11b9ed0e7 RDX: 00007fffcfb00bd3 RSI: 00007fffcfb00bf0 RDI: 0000000000000000 RBP: 00007fffcfb00bc0 R08: 0000000000000001 R09: 0000000000000013 R10: 0000000000000064 R11: 0000000000000293 R12: 0000000000000000 R13: 0000556dca88f7f0 R14: 0000556dca88ea90 R15: 000000000000000e