------------[ cut here ]------------ WARNING: CPU: 1 PID: 0 at net/ipv4/tcp_timer.c:470 tcp_retransmit_timer+0x19c5/0x33f0 net/ipv4/tcp_timer.c:470 Modules linked in: CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.19.0-rc7-syzkaller-01445-g3c47fb2f4c4d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 RIP: 0010:tcp_retransmit_timer+0x19c5/0x33f0 net/ipv4/tcp_timer.c:470 Code: 25 18 00 00 8b 95 b4 07 00 00 48 89 ef 8b 74 24 10 e8 ff ca ff ff 41 89 c5 0f b6 c0 89 44 24 10 e9 49 f2 ff ff e8 eb 0f 99 f9 <0f> 0b e9 3c eb ff ff e8 df 0f 99 f9 48 8b 9c 24 c8 00 00 00 48 85 RSP: 0018:ffffc900001e0b48 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000100 RDX: ffff888011aa9d80 RSI: ffffffff87e16195 RDI: ffff888025a91a80 RBP: ffff888025a91800 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffff888025a91930 R13: ffffffff8ba0f200 R14: 0000000000000000 R15: ffff888025a91830 FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002069d000 CR3: 000000001c692000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tcp_write_timer_handler net/ipv4/tcp_timer.c:620 [inline] tcp_write_timer_handler+0x4de/0x9f0 net/ipv4/tcp_timer.c:594 tcp_write_timer+0xa2/0x2b0 net/ipv4/tcp_timer.c:637 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1474 expire_timers kernel/time/timer.c:1519 [inline] __run_timers.part.0+0x679/0xa80 kernel/time/timer.c:1790 __run_timers kernel/time/timer.c:1768 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1803 __do_softirq+0x29b/0x9c2 kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:29 [inline] RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline] RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:130 [inline] RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:112 [inline] RIP: 0010:acpi_idle_do_entry+0x1c9/0x240 drivers/acpi/processor_idle.c:554 Code: 89 de e8 5a 90 fd f7 84 db 75 98 e8 51 94 fd f7 e8 4c e3 03 f8 66 90 e8 45 94 fd f7 0f 00 2d 3e 54 b7 00 e8 39 94 fd f7 fb f4 <9c> 5b 81 e3 00 02 00 00 fa 31 ff 48 89 de e8 84 90 fd f7 48 85 db RSP: 0018:ffffc90000177d20 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff888011aa9d80 RSI: ffffffff897cdd47 RDI: 0000000000000000 RBP: ffff8881457a9064 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001 R13: ffff8881457a9000 R14: ffff8881457a9064 R15: ffff888018293804 acpi_idle_enter+0x369/0x510 drivers/acpi/processor_idle.c:691 cpuidle_enter_state+0x1b1/0xc80 drivers/cpuidle/cpuidle.c:237 cpuidle_enter+0x4a/0xa0 drivers/cpuidle/cpuidle.c:351 call_cpuidle kernel/sched/idle.c:155 [inline] cpuidle_idle_call kernel/sched/idle.c:236 [inline] do_idle+0x3e8/0x590 kernel/sched/idle.c:303 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:400 start_secondary+0x21d/0x2b0 arch/x86/kernel/smpboot.c:266 secondary_startup_64_no_verify+0xce/0xdb ---------------- Code disassembly (best guess): 0: 89 de mov %ebx,%esi 2: e8 5a 90 fd f7 callq 0xf7fd9061 7: 84 db test %bl,%bl 9: 75 98 jne 0xffffffa3 b: e8 51 94 fd f7 callq 0xf7fd9461 10: e8 4c e3 03 f8 callq 0xf803e361 15: 66 90 xchg %ax,%ax 17: e8 45 94 fd f7 callq 0xf7fd9461 1c: 0f 00 2d 3e 54 b7 00 verw 0xb7543e(%rip) # 0xb75461 23: e8 39 94 fd f7 callq 0xf7fd9461 28: fb sti 29: f4 hlt * 2a: 9c pushfq <-- trapping instruction 2b: 5b pop %rbx 2c: 81 e3 00 02 00 00 and $0x200,%ebx 32: fa cli 33: 31 ff xor %edi,%edi 35: 48 89 de mov %rbx,%rsi 38: e8 84 90 fd f7 callq 0xf7fd90c1 3d: 48 85 db test %rbx,%rbx