lkml.org 
[lkml]   [2022]   [Mar]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
Subject[syzbot] BUG: sleeping function called from invalid context in blk_release_queue
From
Hello,

syzbot found the following issue on:

HEAD commit: f9006d9269ea Add linux-next specific files for 20220321
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=147292eb700000
kernel config: https://syzkaller.appspot.com/x/.config?x=c1619ffa2b0259a1
dashboard link: https://syzkaller.appspot.com/bug?extid=bbea00057d3d55c4889b
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1034ac25700000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1746535d700000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+bbea00057d3d55c4889b@syzkaller.appspotmail.com

BUG: sleeping function called from invalid context at block/blk-sysfs.c:766
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 0, name: swapper/1
preempt_count: 101, expected: 0
RCU nest depth: 0, expected: 0
INFO: lockdep is turned off.
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 PID: 0 Comm: swapper/1 Tainted: G W 5.17.0-next-20220321-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
__might_resched.cold+0x222/0x26b kernel/sched/core.c:9766
blk_release_queue+0x1f/0x320 block/blk-sysfs.c:766
kobject_cleanup lib/kobject.c:705 [inline]
kobject_release lib/kobject.c:736 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x1c8/0x540 lib/kobject.c:753
blkg_free.part.0+0x112/0x1f0 block/blk-cgroup.c:86
blkg_free block/blk-cgroup.c:78 [inline]
__blkg_release+0x105/0x160 block/blk-cgroup.c:102
rcu_do_batch kernel/rcu/tree.c:2535 [inline]
rcu_core+0x7b1/0x1880 kernel/rcu/tree.c:2786
__do_softirq+0x29b/0x9c2 kernel/softirq.c:558
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x123/0x180 kernel/softirq.c:637
irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:29 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline]
RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:130 [inline]
RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:116 [inline]
RIP: 0010:acpi_idle_do_entry+0x1c6/0x250 drivers/acpi/processor_idle.c:556
Code: 89 de e8 4d bf 17 f8 84 db 75 ac e8 64 bb 17 f8 e8 cf 02 1e f8 eb 0c e8 58 bb 17 f8 0f 00 2d e1 3a d1 00 e8 4c bb 17 f8 fb f4 <9c> 5b 81 e3 00 02 00 00 fa 31 ff 48 89 de e8 c7 bd 17 f8 48 85 db
RSP: 0018:ffffc90000177d18 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888010fe9d40 RSI: ffffffff8960ede4 RDI: ffffffff8960edd1
RBP: ffff88814566f864 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff817ef0d8 R11: 0000000000000000 R12: 0000000000000001
R13: ffff88814566f800 R14: ffff88814566f864 R15: ffff8880192fe804
acpi_idle_enter+0x361/0x500 drivers/acpi/processor_idle.c:692
cpuidle_enter_state+0x1b1/0xc80 drivers/cpuidle/cpuidle.c:237
cpuidle_enter+0x4a/0xa0 drivers/cpuidle/cpuidle.c:351
call_cpuidle kernel/sched/idle.c:155 [inline]
cpuidle_idle_call kernel/sched/idle.c:236 [inline]
do_idle+0x3e8/0x590 kernel/sched/idle.c:303
cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:400
start_secondary+0x265/0x340 arch/x86/kernel/smpboot.c:266
secondary_startup_64_no_verify+0xc3/0xcb
</TASK>
----------------
Code disassembly (best guess):
0: 89 de mov %ebx,%esi
2: e8 4d bf 17 f8 callq 0xf817bf54
7: 84 db test %bl,%bl
9: 75 ac jne 0xffffffb7
b: e8 64 bb 17 f8 callq 0xf817bb74
10: e8 cf 02 1e f8 callq 0xf81e02e4
15: eb 0c jmp 0x23
17: e8 58 bb 17 f8 callq 0xf817bb74
1c: 0f 00 2d e1 3a d1 00 verw 0xd13ae1(%rip) # 0xd13b04
23: e8 4c bb 17 f8 callq 0xf817bb74
28: fb sti
29: f4 hlt
* 2a: 9c pushfq <-- trapping instruction
2b: 5b pop %rbx
2c: 81 e3 00 02 00 00 and $0x200,%ebx
32: fa cli
33: 31 ff xor %edi,%edi
35: 48 89 de mov %rbx,%rsi
38: e8 c7 bd 17 f8 callq 0xf817be04
3d: 48 85 db test %rbx,%rbx


---
This report 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 issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot can test patches for this issue, for details see:
https://goo.gl/tpsmEJ#testing-patches

\
 
 \ /
  Last update: 2022-03-21 21:42    [W:0.041 / U:0.200 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site