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WARNING in kcov_remote_start (2)

Status: closed as invalid on 2019/09/04 14:27
Subsystems: usb
[Documentation on labels]
First crash: 1695d, last: 1695d
▶ ▼ Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in kcov_remote_start (3) wireless 12299 now 27d 0/26 upstream: reported on 2024/03/28 11:00
upstream WARNING in kcov_remote_start usb C 655 1695d 1695d 0/26 closed as invalid on 2019/09/03 16:37

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 0 at kernel/kcov.c:684 kcov_remote_start.cold+0xc/0x26 kernel/kcov.c:684
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.3.0-rc7+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0xca/0x13e lib/dump_stack.c:113
 panic+0x2a3/0x6da kernel/panic.c:219
 __warn.cold+0x20/0x4a kernel/panic.c:576
 report_bug+0x262/0x2a0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 do_error_trap+0x12b/0x1e0 arch/x86/kernel/traps.c:272
 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:291
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1028
RIP: 0010:kcov_remote_start.cold+0xc/0x26 kernel/kcov.c:684
Code: b0 f8 ff ff 48 c7 c7 d8 dd a4 86 e8 54 93 ea ff 0f 0b 5b 4c 89 e7 5d 41 5c e9 9d e7 2f 04 48 c7 c7 d8 dd a4 86 e8 3a 93 ea ff <0f> 0b e9 93 fd ff ff 48 c7 c7 d8 dd a4 86 e8 27 93 ea ff 0f 0b e9
RSP: 0018:ffff8881db209ae8 EFLAGS: 00010082
RAX: 0000000000000024 RBX: ffff8881d55ef700 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff81288ddd RDI: ffffed103b64134f
RBP: ffff8881d55ef700 R08: 0000000000000024 R09: fffffbfff0f139e4
R10: fffffbfff0f139e3 R11: ffffffff8789cf1b R12: ffff8881d3e44d88
R13: ffff8881da16c238 R14: dffffc0000000000 R15: ffff8881d57ff400
 dummy_timer+0x125f/0x301a drivers/usb/gadget/udc/dummy_hcd.c:1965
 call_timer_fn+0x179/0x650 kernel/time/timer.c:1322
 expire_timers kernel/time/timer.c:1366 [inline]
 __run_timers kernel/time/timer.c:1685 [inline]
 __run_timers kernel/time/timer.c:1653 [inline]
 run_timer_softirq+0x5cc/0x14b0 kernel/time/timer.c:1698
 __do_softirq+0x221/0x912 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x178/0x1a0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:537 [inline]
 smp_apic_timer_interrupt+0x12f/0x500 arch/x86/kernel/apic/apic.c:1133
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830
 </IRQ>
RIP: 0010:default_idle+0x28/0x2e0 arch/x86/kernel/process.c:581
Code: 90 90 41 56 41 55 65 44 8b 2d 54 d8 93 7a 41 54 55 53 0f 1f 44 00 00 e8 46 49 d5 fb e9 07 00 00 00 0f 00 2d ea 7d 54 00 fb f4 <65> 44 8b 2d 30 d8 93 7a 0f 1f 44 00 00 5b 5d 41 5c 41 5d 41 5e c3
RSP: 0018:ffffffff86c07da8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000007 RBX: ffffffff86c2b200 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000006 RDI: ffffffff86c2ba44
RBP: fffffbfff0d85640 R08: ffffffff86c2b200 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 cpuidle_idle_call kernel/sched/idle.c:154 [inline]
 do_idle+0x3c2/0x4f0 kernel/sched/idle.c:263
 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:354
 start_kernel+0x838/0x872 init/main.c:785
 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:241
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (1153):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/09/03 17:20 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report syz C ci2-upstream-usb
2019/09/03 23:29 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 23:23 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 23:16 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 23:09 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 23:02 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 22:56 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 22:49 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 22:43 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 22:35 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 22:29 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 22:22 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 22:16 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 22:09 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 22:01 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 21:54 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 21:48 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 21:42 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 21:35 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 21:28 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 21:21 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 21:15 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 21:08 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 21:01 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 20:54 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 20:48 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 20:41 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 20:34 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 20:27 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 20:20 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 20:14 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 20:07 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 20:00 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 19:53 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 19:46 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 19:39 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 19:33 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 19:26 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 19:19 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 19:12 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 19:06 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
2019/09/03 18:59 https://github.com/google/kasan.git usb-fuzzer d8de11cd5a29 48448e71 .config console log report ci2-upstream-usb
* Struck through repros no longer work on HEAD.