ci starts bisection 2023-04-08 20:29:07.798423399 +0000 UTC m=+70462.276892952
bisecting fixing commit since 0b1dcc2cf55ae6523c6fbd0d741b3ac28c9f4536
building syzkaller on 74a66371788c1eb22bde25c9c422c7754596d7f5
ensuring issue is reproducible on original commit 0b1dcc2cf55ae6523c6fbd0d741b3ac28c9f4536

testing commit 0b1dcc2cf55ae6523c6fbd0d741b3ac28c9f4536 gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 364ea0b84e4af13df08ff344cef5012d99406bf72e78d14019cd0f480226a1da
all runs: crashed: WARNING in tcp_retransmit_timer
testing current HEAD 68047c48b2288803c441df9f3e61d0d26bed87df
testing commit 68047c48b2288803c441df9f3e61d0d26bed87df gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 236cac66deadea4e25b9b540f194cd20618ad0e03b3e2315e9c9f11383a31e30
all runs: crashed: WARNING in tcp_retransmit_timer
revisions tested: 2, total time: 26m55.289567869s (build: 17m33.367317914s, test: 8m8.901572444s)
the crash still happens on HEAD
commit msg: Merge tag 'char-misc-6.3-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
crash: WARNING in tcp_retransmit_timer
------------[ cut here ]------------
WARNING: CPU: 1 PID: 0 at net/ipv4/tcp_timer.c:470 retransmits_timed_out net/ipv4/tcp_timer.c:215 [inline]
WARNING: CPU: 1 PID: 0 at net/ipv4/tcp_timer.c:470 tcp_write_timeout net/ipv4/tcp_timer.c:266 [inline]
WARNING: CPU: 1 PID: 0 at net/ipv4/tcp_timer.c:470 tcp_retransmit_timer+0x169e/0x3220 net/ipv4/tcp_timer.c:510
Modules linked in:
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.3.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
RIP: 0010:tcp_retransmit_timer+0x169e/0x3220 net/ipv4/tcp_timer.c:470
Code: 02 40 38 f0 0f 8f ed fc ff ff 84 c0 0f 84 e5 fc ff ff 48 8b 3c 24 44 89 44 24 18 e8 dc 8f e3 f9 44 8b 44 24 18 e9 cd fc ff ff <0f> 0b e9 b9 ed ff ff 4c 8b 84 24 b8 00 00 00 4d 85 c0 0f 84 e8 f3
RSP: 0018:ffffc900003e8ba8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 1ffff9200007d17c RCX: 0000000000000001
RDX: 1ffff11004b33058 RSI: ffffffff896b8ac0 RDI: ffff8880259982c0
RBP: ffff888025998070 R08: 0000000000000001 R09: ffffffff9037fc47
R10: 0000000000000001 R11: 0000000000000000 R12: ffff888025998994
R13: ffff88807edee080 R14: ffffffff87d5b040 R15: ffff888025998040
FS:  0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002020f000 CR3: 000000007e3f2000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 tcp_write_timer+0x7d/0x1c0 net/ipv4/tcp_timer.c:637
 call_timer_fn+0x163/0x400 kernel/time/timer.c:1700
 expire_timers+0x224/0x400 kernel/time/timer.c:1751
 __run_timers kernel/time/timer.c:2022 [inline]
 __run_timers kernel/time/timer.c:1995 [inline]
 run_timer_softirq+0x296/0x790 kernel/time/timer.c:2035
 __do_softirq+0x1d4/0x905 kernel/softirq.c:571
 invoke_softirq kernel/softirq.c:445 [inline]
 __irq_exit_rcu+0x114/0x190 kernel/softirq.c:650
 irq_exit_rcu+0x9/0x20 kernel/softirq.c:662
 sysvec_apic_timer_interrupt+0x97/0xc0 arch/x86/kernel/apic/apic.c:1107
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:72 [inline]
RIP: 0010:acpi_safe_halt+0x1b/0x20 drivers/acpi/processor_idle.c:113
Code: ed c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 65 48 8b 04 25 40 b8 03 00 48 8b 00 a8 08 75 0c 66 90 0f 00 2d 97 bb a4 00 fb f4 <fa> c3 0f 1f 00 0f b6 47 08 3c 01 74 0b 3c 02 74 05 8b 7f 04 eb 9f
RSP: 0018:ffffc9000037fd60 EFLAGS: 00000246
RAX: 0000000000004000 RBX: 0000000000038c68 RCX: ffffffff8927697e
RDX: 0000000000000001 RSI: ffff888145010800 RDI: ffff888145010864
RBP: ffff888019084800 R08: 0000000000000001 R09: ffff8880b9b36c2b
R10: ffffed1017366d85 R11: ffffffff8c183080 R12: 0000000000000001
R13: ffff888145010864 R14: ffffffff8c183080 R15: 0000000000000000
 acpi_idle_enter+0xc7/0x150 drivers/acpi/processor_idle.c:711
 cpuidle_enter_state+0x82/0x520 drivers/cpuidle/cpuidle.c:267
 cpuidle_enter+0x49/0xa0 drivers/cpuidle/cpuidle.c:388
 cpuidle_idle_call kernel/sched/idle.c:215 [inline]
 do_idle+0x305/0x3e0 kernel/sched/idle.c:282
 cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:379
 start_secondary+0x221/0x2b0 arch/x86/kernel/smpboot.c:264
 secondary_startup_64_no_verify+0xce/0xdb
 </TASK>
----------------
Code disassembly (best guess):
   0:	ed                   	in     (%dx),%eax
   1:	c3                   	retq
   2:	66 66 2e 0f 1f 84 00 	data16 nopw %cs:0x0(%rax,%rax,1)
   9:	00 00 00 00
   d:	66 90                	xchg   %ax,%ax
   f:	65 48 8b 04 25 40 b8 	mov    %gs:0x3b840,%rax
  16:	03 00
  18:	48 8b 00             	mov    (%rax),%rax
  1b:	a8 08                	test   $0x8,%al
  1d:	75 0c                	jne    0x2b
  1f:	66 90                	xchg   %ax,%ax
  21:	0f 00 2d 97 bb a4 00 	verw   0xa4bb97(%rip)        # 0xa4bbbf
  28:	fb                   	sti
  29:	f4                   	hlt
* 2a:	fa                   	cli <-- trapping instruction
  2b:	c3                   	retq
  2c:	0f 1f 00             	nopl   (%rax)
  2f:	0f b6 47 08          	movzbl 0x8(%rdi),%eax
  33:	3c 01                	cmp    $0x1,%al
  35:	74 0b                	je     0x42
  37:	3c 02                	cmp    $0x2,%al
  39:	74 05                	je     0x40
  3b:	8b 7f 04             	mov    0x4(%rdi),%edi
  3e:	eb 9f                	jmp    0xffffffdf