diff for duplicates of <000000000000d2fe62056b3ccca5@google.com> diff --git a/a/1.txt b/N1/1.txt index 5b9a3bc..2bca1dd 100644 --- a/a/1.txt +++ b/N1/1.txt @@ -1,109 +1,125 @@ -SGVsbG8sDQoNCnN5emJvdCBmb3VuZCB0aGUgZm9sbG93aW5nIGNyYXNoIG9uOg0KDQpIRUFEIGNv -bW1pdDogICAgZjIxMjU5OTJlN2NiIE1lcmdlIHRhZyAneGZzLTQuMTctZml4ZXMtMScgb2YgIA0K -Z2l0Oi8vZ2l0Lmtlcm4uLi4NCmdpdCB0cmVlOiAgICAgICB1cHN0cmVhbQ0KY29uc29sZSBvdXRw -dXQ6IGh0dHBzOi8vc3l6a2FsbGVyLmFwcHNwb3QuY29tL3gvbG9nLnR4dD9pZD00NzU1OTQwMDg3 -NjkzMzEyDQprZXJuZWwgY29uZmlnOiAgIA0KaHR0cHM6Ly9zeXprYWxsZXIuYXBwc3BvdC5jb20v -eC8uY29uZmlnP2lkPTY0OTM1NTc3ODI5NTkxNjQ3MTENCmRhc2hib2FyZCBsaW5rOiBodHRwczov -L3N5emthbGxlci5hcHBzcG90LmNvbS9idWc/ZXh0aWQ9ZjE2YjNlMzUxMmExZTNjMWQxZjYNCmNv -bXBpbGVyOiAgICAgICBnY2MgKEdDQykgOC4wLjEgMjAxODA0MTMgKGV4cGVyaW1lbnRhbCkNCg0K -VW5mb3J0dW5hdGVseSwgSSBkb24ndCBoYXZlIGFueSByZXByb2R1Y2VyIGZvciB0aGlzIGNyYXNo -IHlldC4NCg0KSU1QT1JUQU5UOiBpZiB5b3UgZml4IHRoZSBidWcsIHBsZWFzZSBhZGQgdGhlIGZv 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-IGlmIHRoZSBjcmFzaCBoYXBwZW5zIGFnYWluLCBpdCB3aWxsIGNhdXNlIGNyZWF0aW9uIG9mIGEg -bmV3IGJ1ZyAgDQpyZXBvcnQuDQpOb3RlOiBhbGwgY29tbWFuZHMgbXVzdCBzdGFydCBmcm9tIGJl -Z2lubmluZyBvZiB0aGUgbGluZSBpbiB0aGUgZW1haWwgYm9keS4NCg= +Hello, + +syzbot found the following crash on: + +HEAD commit: f2125992e7cb Merge tag 'xfs-4.17-fixes-1' of +git://git.kern... +git tree: upstream +console output: https://syzkaller.appspot.com/x/log.txt?id=4755940087693312 +kernel config: +https://syzkaller.appspot.com/x/.config?id=6493557782959164711 +dashboard link: https://syzkaller.appspot.com/bug?extid=f16b3e3512a1e3c1d1f6 +compiler: gcc (GCC) 8.0.1 20180413 (experimental) + +Unfortunately, I don't have any reproducer for this crash yet. + +IMPORTANT: if you fix the bug, please add the following tag to the commit: +Reported-by: syzbot+f16b3e3512a1e3c1d1f6@syzkaller.appspotmail.com + +do_dccp_getsockopt: sockopt(PACKET_SIZE) is deprecated: fix your app +do_dccp_getsockopt: sockopt(PACKET_SIZE) is deprecated: fix your app +ntfs: (device loop6): parse_options(): Unrecognized mount option +error�n��uldip. +INFO: rcu_sched self-detected stall on CPU + 0-...!: (125000 ticks this GP) idle=f3e/1/4611686018427387906 +softirq=112858/112858 fqs=0 + (t=125000 jiffies g=61626 c=61625 q=1534) +rcu_sched kthread starved for 125000 jiffies! g61626 c61625 f0x0 +RCU_GP_WAIT_FQS(3) ->state=0x402 ->cpu=0 +RCU grace-period kthread stack dump: +rcu_sched I23592 9 2 0x80000000 +Call Trace: + context_switch kernel/sched/core.c:2848 [inline] + __schedule+0x801/0x1e30 kernel/sched/core.c:3490 + schedule+0xef/0x430 kernel/sched/core.c:3549 + schedule_timeout+0x138/0x240 kernel/time/timer.c:1801 + rcu_gp_kthread+0x6b5/0x1940 kernel/rcu/tree.c:2231 + kthread+0x345/0x410 kernel/kthread.c:238 + ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412 +NMI backtrace for cpu 0 +CPU: 0 PID: 26694 Comm: syz-executor1 Not tainted 4.17.0-rc3+ #28 +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+0x1b9/0x294 lib/dump_stack.c:113 + nmi_cpu_backtrace.cold.4+0x19/0xce lib/nmi_backtrace.c:103 + nmi_trigger_cpumask_backtrace+0x151/0x192 lib/nmi_backtrace.c:62 + arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 + trigger_single_cpu_backtrace include/linux/nmi.h:156 [inline] + rcu_dump_cpu_stacks+0x175/0x1c2 kernel/rcu/tree.c:1376 + print_cpu_stall kernel/rcu/tree.c:1525 [inline] + check_cpu_stall.isra.61.cold.80+0x36c/0x59a kernel/rcu/tree.c:1593 + __rcu_pending kernel/rcu/tree.c:3356 [inline] + rcu_pending kernel/rcu/tree.c:3401 [inline] + rcu_check_callbacks+0x21b/0xad0 kernel/rcu/tree.c:2763 + update_process_times+0x2d/0x70 kernel/time/timer.c:1636 + tick_sched_handle+0x9f/0x180 kernel/time/tick-sched.c:164 + tick_sched_timer+0x45/0x130 kernel/time/tick-sched.c:1274 + __run_hrtimer kernel/time/hrtimer.c:1398 [inline] + __hrtimer_run_queues+0x3e3/0x10a0 kernel/time/hrtimer.c:1460 + hrtimer_interrupt+0x2f3/0x750 kernel/time/hrtimer.c:1518 + local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1025 [inline] + smp_apic_timer_interrupt+0x15d/0x710 arch/x86/kernel/apic/apic.c:1050 + apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:863 + </IRQ> +RIP: 0010:arch_local_irq_enable arch/x86/include/asm/paravirt.h:793 [inline] +RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 +[inline] +RIP: 0010:_raw_spin_unlock_irq+0x56/0x70 kernel/locking/spinlock.c:192 +RSP: 0018:ffff8801b3dbf438 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 +RAX: dffffc0000000000 RBX: ffff8801dae2c680 RCX: 1ffff100361ebd4d +RDX: 1ffffffff11a316f RSI: ffff8801b0f5ea48 RDI: ffffffff88d18b78 +RBP: ffff8801b3dbf440 R08: ffff8801b0f5e9f8 R09: 0000000000000006 +R10: ffff8801b0f5e1c0 R11: 0000000000000000 R12: ffff8801b0f5e1c0 +R13: ffff8801b0f5e7a0 R14: dffffc0000000000 R15: ffff8801b0f5e1c0 + rq_unlock_irq kernel/sched/sched.h:1824 [inline] + __schedule+0x144f/0x1e30 kernel/sched/core.c:3493 + schedule+0xef/0x430 kernel/sched/core.c:3549 + do_sched_yield+0x187/0x240 kernel/sched/core.c:4965 + yield+0xa5/0xe0 kernel/sched/core.c:5054 + tasklet_kill+0x4e/0xd0 kernel/softirq.c:559 + ppp_asynctty_close+0x9e/0x150 drivers/net/ppp/ppp_async.c:239 + ppp_asynctty_hangup+0x15/0x20 drivers/net/ppp/ppp_async.c:256 + tty_ldisc_hangup+0x138/0x640 drivers/tty/tty_ldisc.c:730 + __tty_hangup.part.21+0x2da/0x6e0 drivers/tty/tty_io.c:621 + __tty_hangup drivers/tty/tty_io.c:571 [inline] + tty_vhangup+0x21/0x30 drivers/tty/tty_io.c:694 + pty_close+0x3bd/0x510 drivers/tty/pty.c:78 + tty_release+0x494/0x12e0 drivers/tty/tty_io.c:1656 + __fput+0x34d/0x890 fs/file_table.c:209 + ____fput+0x15/0x20 fs/file_table.c:243 + task_work_run+0x1e4/0x290 kernel/task_work.c:113 + tracehook_notify_resume include/linux/tracehook.h:191 [inline] + exit_to_usermode_loop+0x2bd/0x310 arch/x86/entry/common.c:166 + prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline] + syscall_return_slowpath arch/x86/entry/common.c:265 [inline] + do_syscall_64+0x6ac/0x800 arch/x86/entry/common.c:290 + entry_SYSCALL_64_after_hwframe+0x49/0xbe +RIP: 0033:0x455979 +RSP: 002b:00007f92c3751c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 +RAX: 0000000000000000 RBX: 00007f92c37526d4 RCX: 0000000000455979 +RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000013 +RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 +R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff +R13: 0000000000000053 R14: 00000000006f4868 R15: 0000000000000001 + + +--- +This bug is generated by a bot. It may contain errors. +See https://goo.gl/tpsmEJ for more information about syzbot. +syzbot engineers can be reached at syzkaller@googlegroups.com. + +syzbot will keep track of this bug report. +If you forgot to add the Reported-by tag, once the fix for this bug is +merged +into any tree, please reply to this email with: +#syz fix: exact-commit-title +To mark this as a duplicate of another syzbot report, please reply with: +#syz dup: exact-subject-of-another-report +If it's a one-off invalid bug report, please reply with: +#syz invalid +Note: if the crash happens again, it will cause creation of a new bug +report. +Note: all commands must start from beginning of the line in the email body. diff --git a/a/content_digest b/N1/content_digest index 0491a99..35e79fc 100644 --- a/a/content_digest +++ b/N1/content_digest @@ -1,6 +1,6 @@ "From\0syzbot <syzbot+f16b3e3512a1e3c1d1f6@syzkaller.appspotmail.com>\0" "Subject\0INFO: rcu detected stall in __schedule\0" - "Date\0Wed, 02 May 2018 17:56:02 +0000\0" + "Date\0Wed, 02 May 2018 10:56:02 -0700\0" "To\0linux-kernel@vger.kernel.org" linux-ppp@vger.kernel.org netdev@vger.kernel.org @@ -8,114 +8,130 @@ " syzkaller-bugs@googlegroups.com\0" "\00:1\0" "b\0" - "SGVsbG8sDQoNCnN5emJvdCBmb3VuZCB0aGUgZm9sbG93aW5nIGNyYXNoIG9uOg0KDQpIRUFEIGNv\n" - "bW1pdDogICAgZjIxMjU5OTJlN2NiIE1lcmdlIHRhZyAneGZzLTQuMTctZml4ZXMtMScgb2YgIA0K\n" - "Z2l0Oi8vZ2l0Lmtlcm4uLi4NCmdpdCB0cmVlOiAgICAgICB1cHN0cmVhbQ0KY29uc29sZSBvdXRw\n" - "dXQ6IGh0dHBzOi8vc3l6a2FsbGVyLmFwcHNwb3QuY29tL3gvbG9nLnR4dD9pZD00NzU1OTQwMDg3\n" - "NjkzMzEyDQprZXJuZWwgY29uZmlnOiAgIA0KaHR0cHM6Ly9zeXprYWxsZXIuYXBwc3BvdC5jb20v\n" - "eC8uY29uZmlnP2lkPTY0OTM1NTc3ODI5NTkxNjQ3MTENCmRhc2hib2FyZCBsaW5rOiBodHRwczov\n" - "L3N5emthbGxlci5hcHBzcG90LmNvbS9idWc/ZXh0aWQ9ZjE2YjNlMzUxMmExZTNjMWQxZjYNCmNv\n" - "bXBpbGVyOiAgICAgICBnY2MgKEdDQykgOC4wLjEgMjAxODA0MTMgKGV4cGVyaW1lbnRhbCkNCg0K\n" - "VW5mb3J0dW5hdGVseSwgSSBkb24ndCBoYXZlIGFueSByZXByb2R1Y2VyIGZvciB0aGlzIGNyYXNo\n" - 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syzbot+f16b3e3512a1e3c1d1f6@syzkaller.appspotmail.com\n" + "\n" + "do_dccp_getsockopt: sockopt(PACKET_SIZE) is deprecated: fix your app\n" + "do_dccp_getsockopt: sockopt(PACKET_SIZE) is deprecated: fix your app\n" + "ntfs: (device loop6): parse_options(): Unrecognized mount option \n" + "error\357\277\275n\357\277\275\357\277\275uldip.\n" + "INFO: rcu_sched self-detected stall on CPU\n" + "\t0-...!: (125000 ticks this GP) idle=f3e/1/4611686018427387906 \n" + "softirq=112858/112858 fqs=0\n" + "\t (t=125000 jiffies g=61626 c=61625 q=1534)\n" + "rcu_sched kthread starved for 125000 jiffies! g61626 c61625 f0x0 \n" + "RCU_GP_WAIT_FQS(3) ->state=0x402 ->cpu=0\n" + "RCU grace-period kthread stack dump:\n" + "rcu_sched I23592 9 2 0x80000000\n" + "Call Trace:\n" + " context_switch kernel/sched/core.c:2848 [inline]\n" + " __schedule+0x801/0x1e30 kernel/sched/core.c:3490\n" + " schedule+0xef/0x430 kernel/sched/core.c:3549\n" + " schedule_timeout+0x138/0x240 kernel/time/timer.c:1801\n" + " rcu_gp_kthread+0x6b5/0x1940 kernel/rcu/tree.c:2231\n" + " kthread+0x345/0x410 kernel/kthread.c:238\n" + " ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412\n" + "NMI backtrace for cpu 0\n" + "CPU: 0 PID: 26694 Comm: syz-executor1 Not tainted 4.17.0-rc3+ #28\n" + "Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS \n" + "Google 01/01/2011\n" + "Call Trace:\n" + " <IRQ>\n" + " __dump_stack lib/dump_stack.c:77 [inline]\n" + " dump_stack+0x1b9/0x294 lib/dump_stack.c:113\n" + " nmi_cpu_backtrace.cold.4+0x19/0xce lib/nmi_backtrace.c:103\n" + " nmi_trigger_cpumask_backtrace+0x151/0x192 lib/nmi_backtrace.c:62\n" + " arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38\n" + " trigger_single_cpu_backtrace include/linux/nmi.h:156 [inline]\n" + " rcu_dump_cpu_stacks+0x175/0x1c2 kernel/rcu/tree.c:1376\n" + " print_cpu_stall kernel/rcu/tree.c:1525 [inline]\n" + " check_cpu_stall.isra.61.cold.80+0x36c/0x59a kernel/rcu/tree.c:1593\n" + " __rcu_pending kernel/rcu/tree.c:3356 [inline]\n" + " rcu_pending kernel/rcu/tree.c:3401 [inline]\n" + " rcu_check_callbacks+0x21b/0xad0 kernel/rcu/tree.c:2763\n" + " update_process_times+0x2d/0x70 kernel/time/timer.c:1636\n" + " tick_sched_handle+0x9f/0x180 kernel/time/tick-sched.c:164\n" + " tick_sched_timer+0x45/0x130 kernel/time/tick-sched.c:1274\n" + " __run_hrtimer kernel/time/hrtimer.c:1398 [inline]\n" + " __hrtimer_run_queues+0x3e3/0x10a0 kernel/time/hrtimer.c:1460\n" + " hrtimer_interrupt+0x2f3/0x750 kernel/time/hrtimer.c:1518\n" + " local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1025 [inline]\n" + " smp_apic_timer_interrupt+0x15d/0x710 arch/x86/kernel/apic/apic.c:1050\n" + " apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:863\n" + " </IRQ>\n" + "RIP: 0010:arch_local_irq_enable arch/x86/include/asm/paravirt.h:793 [inline]\n" + "RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 \n" + "[inline]\n" + "RIP: 0010:_raw_spin_unlock_irq+0x56/0x70 kernel/locking/spinlock.c:192\n" + "RSP: 0018:ffff8801b3dbf438 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13\n" + "RAX: dffffc0000000000 RBX: ffff8801dae2c680 RCX: 1ffff100361ebd4d\n" + "RDX: 1ffffffff11a316f RSI: ffff8801b0f5ea48 RDI: ffffffff88d18b78\n" + "RBP: ffff8801b3dbf440 R08: ffff8801b0f5e9f8 R09: 0000000000000006\n" + "R10: ffff8801b0f5e1c0 R11: 0000000000000000 R12: ffff8801b0f5e1c0\n" + "R13: ffff8801b0f5e7a0 R14: dffffc0000000000 R15: ffff8801b0f5e1c0\n" + " rq_unlock_irq kernel/sched/sched.h:1824 [inline]\n" + " __schedule+0x144f/0x1e30 kernel/sched/core.c:3493\n" + " schedule+0xef/0x430 kernel/sched/core.c:3549\n" + " do_sched_yield+0x187/0x240 kernel/sched/core.c:4965\n" + " yield+0xa5/0xe0 kernel/sched/core.c:5054\n" + " tasklet_kill+0x4e/0xd0 kernel/softirq.c:559\n" + " ppp_asynctty_close+0x9e/0x150 drivers/net/ppp/ppp_async.c:239\n" + " ppp_asynctty_hangup+0x15/0x20 drivers/net/ppp/ppp_async.c:256\n" + " tty_ldisc_hangup+0x138/0x640 drivers/tty/tty_ldisc.c:730\n" + " __tty_hangup.part.21+0x2da/0x6e0 drivers/tty/tty_io.c:621\n" + " __tty_hangup drivers/tty/tty_io.c:571 [inline]\n" + " tty_vhangup+0x21/0x30 drivers/tty/tty_io.c:694\n" + " pty_close+0x3bd/0x510 drivers/tty/pty.c:78\n" + " tty_release+0x494/0x12e0 drivers/tty/tty_io.c:1656\n" + " __fput+0x34d/0x890 fs/file_table.c:209\n" + " ____fput+0x15/0x20 fs/file_table.c:243\n" + " task_work_run+0x1e4/0x290 kernel/task_work.c:113\n" + " tracehook_notify_resume include/linux/tracehook.h:191 [inline]\n" + " exit_to_usermode_loop+0x2bd/0x310 arch/x86/entry/common.c:166\n" + " prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline]\n" + " syscall_return_slowpath arch/x86/entry/common.c:265 [inline]\n" + " do_syscall_64+0x6ac/0x800 arch/x86/entry/common.c:290\n" + " entry_SYSCALL_64_after_hwframe+0x49/0xbe\n" + "RIP: 0033:0x455979\n" + "RSP: 002b:00007f92c3751c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000003\n" + "RAX: 0000000000000000 RBX: 00007f92c37526d4 RCX: 0000000000455979\n" + "RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000013\n" + "RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000\n" + "R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff\n" + "R13: 0000000000000053 R14: 00000000006f4868 R15: 0000000000000001\n" + "\n" + "\n" + "---\n" + "This bug is generated by a bot. It may contain errors.\n" + "See https://goo.gl/tpsmEJ for more information about syzbot.\n" + "syzbot engineers can be reached at syzkaller@googlegroups.com.\n" + "\n" + "syzbot will keep track of this bug report.\n" + "If you forgot to add the Reported-by tag, once the fix for this bug is \n" + "merged\n" + "into any tree, please reply to this email with:\n" + "#syz fix: exact-commit-title\n" + "To mark this as a duplicate of another syzbot report, please reply with:\n" + "#syz dup: exact-subject-of-another-report\n" + "If it's a one-off invalid bug report, please reply with:\n" + "#syz invalid\n" + "Note: if the crash happens again, it will cause creation of a new bug \n" + "report.\n" + Note: all commands must start from beginning of the line in the email body. -839fdf93c920ff0296cc62479d9256c6df8c7f563ff643b5cc5c1e10719edb01 +920487ae2c4924cb39eaf8e268af3c0635e3c8e82349e1daf85644e2f789de13
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