syzbot


WARNING in try_to_wake_up

Status: upstream: reported C repro on 2020/10/25 01:37
Reported-by: syzbot+dd74984384afdb86e904@syzkaller.appspotmail.com
First crash: 618d, last: 518d

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 10073 at include/linux/cpumask.h:137 rcu_read_unlock include/linux/rcupdate.h:696 [inline]
WARNING: CPU: 0 PID: 10073 at include/linux/cpumask.h:137 ttwu_stat kernel/sched/core.c:2441 [inline]
WARNING: CPU: 0 PID: 10073 at include/linux/cpumask.h:137 try_to_wake_up+0xef6/0x1330 kernel/sched/core.c:2984
Modules linked in:
CPU: 0 PID: 10073 Comm: io_wq_manager Not tainted 5.10.0-rc6-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
RIP: 0010:cpu_max_bits_warn include/linux/cpumask.h:137 [inline]
RIP: 0010:cpumask_check include/linux/cpumask.h:144 [inline]
RIP: 0010:cpumask_check include/linux/cpumask.h:142 [inline]
RIP: 0010:cpumask_test_cpu include/linux/cpumask.h:367 [inline]
RIP: 0010:is_cpu_allowed kernel/sched/core.c:1705 [inline]
RIP: 0010:select_task_rq kernel/sched/core.c:2370 [inline]
RIP: 0010:try_to_wake_up+0xef6/0x1330 kernel/sched/core.c:2964
Code: 80 3d d3 2d 8c 0b 00 0f 84 f1 00 00 00 e8 72 80 10 00 48 c7 c6 d9 6d 4c 81 48 c7 c7 e0 77 33 8b e8 ff b6 09 00 e9 15 f9 ff ff <0f> 0b e9 65 f4 ff ff 4c 89 ff 48 89 4c 24 08 e8 b6 51 ff ff 48 8b
RSP: 0018:ffffc900008f7d50 EFLAGS: 00010002
RAX: dffffc0000000000 RBX: 1ffff9200011efaf RCX: ffff88805558c7f8
RDX: 1ffff1100aab18fe RSI: ffffffff83b6442b RDI: 0000000000000006
RBP: ffff88805558c480 R08: ffff88805558c490 R09: ffffffff8ceccccf
R10: 0000000000000040 R11: 0000000000000000 R12: 0000000000000206
R13: ffff88805558ccb8 R14: 0000000000000008 R15: ffff88805558c7f0
FS:  0000000000000000(0000) GS:ffff88802ca00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000084 CR3: 000000001d67d000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 create_io_worker+0x590/0x8d0 fs/io-wq.c:720
 io_wq_manager+0x16b/0xb80 fs/io-wq.c:785
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296

Crashes (55710):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-qemu-upstream 2020/12/03 14:12 upstream 34816d20f173 59ad4022 .config log report syz C
ci-qemu-upstream 2020/11/28 01:43 upstream 99c710c46dfc 5018c946 .config log report syz C
ci-qemu-upstream 2021/01/29 12:22 upstream bec4c2968fce 6593fd32 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream 2021/01/29 11:49 upstream bec4c2968fce 6593fd32 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream 2021/01/29 08:12 upstream bec4c2968fce 6593fd32 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream 2021/01/29 06:18 upstream e5ff2cb9cf67 7df34f59 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream 2021/01/29 03:18 upstream e5ff2cb9cf67 7df34f59 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream 2021/01/28 23:46 upstream e5ff2cb9cf67 7df34f59 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream 2021/01/28 23:35 upstream e5ff2cb9cf67 7df34f59 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream 2021/01/28 22:34 upstream e5ff2cb9cf67 7df34f59 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream 2021/01/28 22:29 upstream e5ff2cb9cf67 7df34f59 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream 2021/01/28 21:28 upstream e5ff2cb9cf67 7df34f59 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream 2021/01/28 21:28 upstream e5ff2cb9cf67 7df34f59 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream 2021/01/28 20:17 upstream e5ff2cb9cf67 7df34f59 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream 2021/01/28 18:17 upstream 76c057c84d28 7df34f59 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream 2021/01/28 14:46 upstream 76c057c84d28 eefc07f2 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream 2021/01/28 12:45 upstream 76c057c84d28 eefc07f2 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream 2021/01/28 11:30 upstream 76c057c84d28 eefc07f2 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream 2021/01/28 10:27 upstream 76c057c84d28 eefc07f2 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream 2021/01/28 10:01 upstream 76c057c84d28 eefc07f2 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream-386 2021/01/29 14:52 upstream bec4c2968fce 6593fd32 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream-386 2021/01/29 13:59 upstream bec4c2968fce 6593fd32 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream-386 2021/01/29 13:31 upstream bec4c2968fce 6593fd32 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream-386 2021/01/29 12:44 upstream bec4c2968fce 6593fd32 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream-386 2021/01/29 11:03 upstream bec4c2968fce 6593fd32 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream-386 2021/01/29 10:29 upstream bec4c2968fce 6593fd32 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream-386 2021/01/29 09:56 upstream bec4c2968fce 6593fd32 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream-386 2021/01/29 08:49 upstream bec4c2968fce 6593fd32 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream-386 2021/01/29 05:43 upstream e5ff2cb9cf67 7df34f59 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream-386 2021/01/29 04:58 upstream e5ff2cb9cf67 7df34f59 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream-386 2021/01/29 04:31 upstream e5ff2cb9cf67 7df34f59 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream-386 2021/01/29 03:35 upstream e5ff2cb9cf67 7df34f59 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream-386 2021/01/29 02:29 upstream e5ff2cb9cf67 7df34f59 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream-386 2021/01/29 01:45 upstream e5ff2cb9cf67 7df34f59 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream-386 2021/01/29 01:26 upstream e5ff2cb9cf67 7df34f59 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream-386 2021/01/29 00:28 upstream e5ff2cb9cf67 7df34f59 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream-386 2021/01/28 17:47 upstream 76c057c84d28 7df34f59 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream-386 2021/01/28 16:26 upstream 76c057c84d28 7df34f59 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream-386 2021/01/28 14:32 upstream 76c057c84d28 eefc07f2 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream-386 2021/01/28 14:13 upstream 76c057c84d28 eefc07f2 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream-386 2021/01/28 13:51 upstream 76c057c84d28 eefc07f2 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream-386 2021/01/28 13:26 upstream 76c057c84d28 eefc07f2 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream-386 2021/01/28 12:28 upstream 76c057c84d28 eefc07f2 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream-386 2021/01/28 11:49 upstream 76c057c84d28 eefc07f2 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream-386 2021/01/28 11:38 upstream 76c057c84d28 eefc07f2 .config log report info WARNING in try_to_wake_up
ci-qemu-upstream 2021/01/17 14:05 upstream 0da0a8a0a0e1 813be542 .config log report info
ci-qemu-upstream 2020/10/25 01:14 upstream d76913908102 a1839e81 .config log report info
ci-qemu-upstream-386 2020/10/21 01:32 upstream c4d6fe731176 ff4a3345 .config log report info