------------[ cut here ]------------ WARNING: CPU: 3 PID: 16259 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: 16259 Comm: syz-executor.2 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 ae 43 ca fb 4c 89 e6 48 c7 c7 e0 6b b9 8b e8 7f eb 53 03 bf 58 89 41 00 e8 95 bb 33 fe e9 d5 f9 ff ff e8 8b 43 ca fb <0f> 0b 48 c7 c7 e0 6b b9 8b 4c 89 e6 45 31 e4 e8 57 eb 53 03 ba 24 RSP: 0000:ffffc90001aefc90 EFLAGS: 00010046 RAX: 0000000080010001 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: ffff88801350d340 RSI: ffffffff85a87a65 RDI: 0000000000000003 RBP: ffffc90001aefd28 R08: 0000000000000001 R09: 0000000000000022 R10: ffffffff85a87462 R11: 0000000000000000 R12: 0000000000000046 R13: 0000000000000022 R14: ffffc90001aefe40 R15: ffff888010d9e000 FS: 0000000000000000(0000) GS:ffff88802cd00000(0063) knlGS:000000000af59380 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000002d034000 CR3: 000000006574b000 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: 0023:0x805b0fe Code: 3c 24 89 54 24 08 89 f2 19 da 72 5c 83 e8 08 89 da 39 cf 1b 54 24 04 73 24 89 74 24 04 8d b4 26 00 00 00 00 8b 48 f8 8b 50 fc <83> e8 08 89 de 39 cf 19 d6 72 ef 8b 74 24 04 89 54 24 04 3b 44 24 RSP: 002b:00000000ff898200 EFLAGS: 00000297 RAX: 00000000f7e208b8 RBX: 00000000ffffffff RCX: 000000008199db4f RDX: 00000000ffffffff RSI: 00000000ffffffff RDI: 000000008199db4f RBP: 00000000f7e20838 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000