------------[ cut here ]------------
WARNING: CPU: 3 PID: 8705 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: 8705 Comm: syz-fuzzer 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: 0018:ffffc90000598d68 EFLAGS: 00010046
RAX: 0000000080010403 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: ffff888015ba1bc0 RSI: ffffffff85a8d7c5 RDI: 0000000000000003
RBP: ffffc90000598e00 R08: 0000000000000001 R09: 0000000000000022
R10: ffffffff85a8d1c2 R11: 0000000000000000 R12: 0000000000000046
R13: 0000000000000022 R14: ffffc90000598f18 R15: ffff888010d9e000
FS:  000000c000118090(0000) GS:ffff88802cd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000008188000 CR3: 0000000014735000 CR4: 0000000000150ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 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
 asm_call_irq_on_stack+0xf/0x20
 </IRQ>
 __run_irq_on_irqstack arch/x86/include/asm/irq_stack.h:48 [inline]
 run_irq_on_irqstack_cond arch/x86/include/asm/irq_stack.h:101 [inline]
 handle_irq arch/x86/kernel/irq.c:230 [inline]
 __common_interrupt arch/x86/kernel/irq.c:249 [inline]
 common_interrupt+0x120/0x200 arch/x86/kernel/irq.c:239
 asm_common_interrupt+0x1e/0x40 arch/x86/include/asm/idtentry.h:620
RIP: 0010:writel arch/x86/include/asm/io.h:67 [inline]
RIP: 0010:e1000_xmit_frame+0x27aa/0x4630 drivers/net/ethernet/intel/e1000/e1000_main.c:3274
Code: 48 c1 ea 03 48 01 c3 48 b8 00 00 00 00 00 fc ff df 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 82 1d 00 00 48 8b 04 24 8b 40 18 89 03 <e9> 77 fb ff ff e8 0c d5 b0 fc 48 8b 94 24 98 00 00 00 48 b8 00 00
RSP: 0018:ffffc90000d66f98 EFLAGS: 00000246
RAX: 000000000000002d RBX: ffffc9000d123818 RCX: 0000000000000000
RDX: 1ffff11002531183 RSI: ffffffff84c1fbab RDI: ffff888012988c2a
RBP: 00000000ab1000f0 R08: 0000000000000018 R09: 0000000000000000
R10: ffffffff84c1f746 R11: 0000000000000000 R12: 0000000000000018
R13: ffff888012988c00 R14: ffff88801a8f0000 R15: ffff88801d57b2c0
 __netdev_start_xmit include/linux/netdevice.h:4776 [inline]
 netdev_start_xmit include/linux/netdevice.h:4790 [inline]
 xmit_one net/core/dev.c:3574 [inline]
 dev_hard_start_xmit+0x1eb/0x920 net/core/dev.c:3590
 sch_direct_xmit+0x2e1/0xbd0 net/sched/sch_generic.c:313
 qdisc_restart net/sched/sch_generic.c:376 [inline]
 __qdisc_run+0x4ba/0x15f0 net/sched/sch_generic.c:384
 qdisc_run include/net/pkt_sched.h:136 [inline]
 qdisc_run include/net/pkt_sched.h:128 [inline]
 __dev_xmit_skb net/core/dev.c:3765 [inline]
 __dev_queue_xmit+0x1489/0x2dd0 net/core/dev.c:4119
 neigh_hh_output include/net/neighbour.h:499 [inline]
 neigh_output include/net/neighbour.h:508 [inline]
 ip_finish_output2+0xeb6/0x21b0 net/ipv4/ip_output.c:230
 __ip_finish_output net/ipv4/ip_output.c:308 [inline]
 __ip_finish_output+0x396/0x640 net/ipv4/ip_output.c:290
 ip_finish_output+0x35/0x200 net/ipv4/ip_output.c:318
 NF_HOOK_COND include/linux/netfilter.h:290 [inline]
 ip_output+0x196/0x310 net/ipv4/ip_output.c:432
 dst_output include/net/dst.h:441 [inline]
 ip_local_out net/ipv4/ip_output.c:126 [inline]
 __ip_queue_xmit+0x8e9/0x1a00 net/ipv4/ip_output.c:532
 __tcp_transmit_skb+0x18a4/0x3930 net/ipv4/tcp_output.c:1405
 tcp_transmit_skb net/ipv4/tcp_output.c:1423 [inline]
 tcp_write_xmit+0xdde/0x6190 net/ipv4/tcp_output.c:2689
 __tcp_push_pending_frames+0xaa/0x390 net/ipv4/tcp_output.c:2869
 tcp_push+0x446/0x6c0 net/ipv4/tcp.c:737
 tcp_sendmsg_locked+0x2504/0x2d90 net/ipv4/tcp.c:1429
 tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1459
 inet_sendmsg+0x99/0xe0 net/ipv4/af_inet.c:817
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:672
 sock_write_iter+0x289/0x3c0 net/socket.c:999
 call_write_iter include/linux/fs.h:1901 [inline]
 new_sync_write+0x426/0x650 fs/read_write.c:518
 vfs_write+0x791/0xa30 fs/read_write.c:605
 ksys_write+0x1ee/0x250 fs/read_write.c:658
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x4af19b
Code: fb ff eb bd e8 a6 b6 fb ff e9 61 ff ff ff cc e8 9b 82 fb ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30
RSP: 002b:000000c010dcd408 EFLAGS: 00000216 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000c00001c000 RCX: 00000000004af19b
RDX: 00000000000000f0 RSI: 000000c00000a200 RDI: 0000000000000006
RBP: 000000c010dcd458 R08: 000000c010dcd501 R09: 0000000000000004
R10: 000000c00000a1e0 R11: 0000000000000216 R12: 000000000000011e
R13: 000000c0004d6000 R14: 000000000000007f R15: fffffffffffe0e5a