ci starts bisection 2023-06-08 03:39:36.469512961 +0000 UTC m=+65688.757939822
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: 1c6842190acbde2758a2c2bbfd317dec4af274921c812a7b8fe1910cbc0e80c7
all runs: crashed: WARNING in tcp_retransmit_timer
testing current HEAD 5f63595ebd82f56a2dd36ca013dd7f5ff2e2416a
testing commit 5f63595ebd82f56a2dd36ca013dd7f5ff2e2416a gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: ed43dba2788267040af500d9b5f899e66fa6c11ba0f57e3145a0e9ab77d26918
run #0: crashed: WARNING in tcp_retransmit_timer
run #1: OK
run #2: OK
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
reproducer seems to be flaky
crash still not fixed/happens on the oldest tested release
Reproducer flagged being flaky
revisions tested: 2, total time: 1h6m43.564357835s (build: 51m0.036227597s, test: 14m32.771014062s)
crash still not fixed on HEAD or HEAD had kernel test errors
commit msg: Merge tag 'input-for-v6.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
crash: WARNING in tcp_retransmit_timer
------------[ cut here ]------------
WARNING: CPU: 0 PID: 0 at net/ipv4/tcp_timer.c:480 retransmits_timed_out net/ipv4/tcp_timer.c:215 [inline]
WARNING: CPU: 0 PID: 0 at net/ipv4/tcp_timer.c:480 tcp_write_timeout net/ipv4/tcp_timer.c:266 [inline]
WARNING: CPU: 0 PID: 0 at net/ipv4/tcp_timer.c:480 tcp_retransmit_timer+0x16b9/0x3240 net/ipv4/tcp_timer.c:520
Modules linked in:
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.4.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:tcp_retransmit_timer+0x16b9/0x3240 net/ipv4/tcp_timer.c:480
Code: 02 40 38 f0 0f 8f e4 fc ff ff 84 c0 0f 84 dc fc ff ff 48 8b 3c 24 44 89 44 24 18 e8 21 33 e0 f9 44 8b 44 24 18 e9 c4 fc ff ff <0f> 0b e9 9e ed ff ff 4c 8b 84 24 b8 00 00 00 4d 85 c0 0f 84 df f3
RSP: 0018:ffffc90000007ba8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 1ffff92000000f7c RCX: 0000000000000001
RDX: 1ffff11005420488 RSI: ffffffff896b91a0 RDI: ffff88802a102440
RBP: ffff88802a1021f0 R08: 0000000000000001 R09: ffffffff903acd07
R10: 0000000000000001 R11: 0000000000000000 R12: ffff88802a102b14
R13: ffff888078c5c080 R14: ffffffff87db75e0 R15: ffff88802a1021c0
FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002053a000 CR3: 000000002b4d3000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
tcp_write_timer+0x7d/0x1c0 net/ipv4/tcp_timer.c:647
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:1106
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 00 bb 03 00 48 8b 00 a8 08 75 0c 66 90 0f 00 2d 97 ff 9b 00 fb f4 c3 0f 1f 00 0f b6 47 08 3c 01 74 0b 3c 02 74 05 8b 7f 04 eb 9f
RSP: 0018:ffffffff8b407d68 EFLAGS: 00000246
RAX: 0000000000004000 RBX: 0000000000038f28 RCX: ffffffff89307ebe
RDX: 0000000000000001 RSI: ffff888016669000 RDI: ffff888016669064
RBP: ffff888146490000 R08: 0000000000000001 R09: ffff8880b9a36c2b
R10: ffffed1017346d85 R11: ffffffff8c18e5e0 R12: 0000000000000001
R13: ffff888016669064 R14: ffffffff8c18e5e0 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+0x2fe/0x3c0 kernel/sched/idle.c:282
cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:379
rest_init+0x14a/0x220 init/main.c:735
arch_call_rest_init+0xe/0x20 init/main.c:834
start_kernel+0x300/0x340 init/main.c:1088
x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:556
x86_64_start_kernel+0xb3/0xc0 arch/x86/kernel/head64.c:537
secondary_startup_64_no_verify+0xf4/0xfb
----------------
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 00 bb mov %gs:0x3bb00,%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 ff 9b 00 verw 0x9bff97(%rip) # 0x9bffbf
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