All of lore.kernel.org
 help / color / mirror / Atom feed
From: syzbot <syzbot+3d15e7679037c3d35479@syzkaller.appspotmail.com>
To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com,
	tglx@linutronix.de
Subject: [syzbot] [kernel?] inconsistent lock state in valid_state
Date: Sun, 26 Feb 2023 21:45:11 -0800	[thread overview]
Message-ID: <000000000000840dae05f5a7fb53@google.com> (raw)

Hello,

syzbot found the following issue on:

HEAD commit:    307e14c03906 Merge tag '6.3-rc-smb3-client-fixes' of git:/..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=155343f0c80000
kernel config:  https://syzkaller.appspot.com/x/.config?x=636897a0dac3d81e
dashboard link: https://syzkaller.appspot.com/bug?extid=3d15e7679037c3d35479
compiler:       Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/970f2d144bf1/disk-307e14c0.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/1ba101847b5b/vmlinux-307e14c0.xz
kernel image: https://storage.googleapis.com/syzbot-assets/21e98f0fe45e/bzImage-307e14c0.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+3d15e7679037c3d35479@syzkaller.appspotmail.com

================================
WARNING: inconsistent lock state
6.2.0-syzkaller-06742-g307e14c03906 #0 Not tainted
--------------------------------
inconsistent {IN-HARDIRQ-W} -> {HARDIRQ-ON-W} usage.
syz-executor.1/27002 [HC0[0]:SC0[0]:HE1:SE1] takes:
ffffffff81fa11b1 (&obj_hash[i].lock){?.-.}-{2:2}, at: 0xee13a8ffb5cd3747
{IN-HARDIRQ-W} state was registered at:
  lock_acquire+0x23e/0x630 kernel/locking/lockdep.c:5669
  __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
  _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
  debug_object_assert_init+0x6e/0x240 lib/debugobjects.c:881
  debug_timer_assert_init kernel/time/timer.c:792 [inline]
  debug_assert_init kernel/time/timer.c:837 [inline]
  add_timer_on+0xbd/0x5a0 kernel/time/timer.c:1262
  handle_irq_event_percpu kernel/irq/handle.c:195 [inline]
  handle_irq_event+0xad/0x1f0 kernel/irq/handle.c:210
  handle_level_irq+0x3af/0x6d0 kernel/irq/chip.c:650
  generic_handle_irq_desc include/linux/irqdesc.h:158 [inline]
  handle_irq arch/x86/kernel/irq.c:231 [inline]
  __common_interrupt+0xdb/0x1f0 arch/x86/kernel/irq.c:250
  common_interrupt+0xa3/0xc0 arch/x86/kernel/irq.c:240
  asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:640
  __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
  _raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194
  __setup_irq+0x12fa/0x1d90 kernel/irq/manage.c:1812
  request_threaded_irq+0x2ab/0x380 kernel/irq/manage.c:2201
  request_irq include/linux/interrupt.h:168 [inline]
  setup_default_timer_irq+0x1f/0x30 arch/x86/kernel/time.c:70
  x86_late_time_init+0x55/0xa0 arch/x86/kernel/time.c:94
  start_kernel+0x3f8/0x530 init/main.c:1112
  secondary_startup_64_no_verify+0xcf/0xdb
irq event stamp: 12225
hardirqs last  enabled at (12225): [<ffffffff8161ddd3>] raw_spin_rq_unlock_irq kernel/sched/sched.h:1378 [inline]
hardirqs last  enabled at (12225): [<ffffffff8161ddd3>] finish_lock_switch+0x93/0x110 kernel/sched/core.c:5062
hardirqs last disabled at (12224): [<ffffffff8ab9b69e>] __schedule+0x32e/0x4990 kernel/sched/core.c:6521
softirqs last  enabled at (10910): [<ffffffff8154fe59>] invoke_softirq kernel/softirq.c:445 [inline]
softirqs last  enabled at (10910): [<ffffffff8154fe59>] __irq_exit_rcu+0x159/0x240 kernel/softirq.c:650
softirqs last disabled at (10813): [<ffffffff8154fe59>] invoke_softirq kernel/softirq.c:445 [inline]
softirqs last disabled at (10813): [<ffffffff8154fe59>] __irq_exit_rcu+0x159/0x240 kernel/softirq.c:650

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(&obj_hash[i].lock);
  <Interrupt>
    lock(&obj_hash[i].lock);

 *** DEADLOCK ***

1 lock held by syz-executor.1/27002:
 #0: ffff8880765fc0e0 (&type->s_umount_key#61/1){+.+.}-{3:3}, at: alloc_super+0x217/0x930 fs/super.c:228

stack backtrace:
CPU: 0 PID: 27002 Comm: syz-executor.1 Not tainted 6.2.0-syzkaller-06742-g307e14c03906 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
 valid_state+0x136/0x1c0 kernel/locking/lockdep.c:3976
 mark_lock_irq+0xac/0xbb0 kernel/locking/lockdep.c:4179
 mark_lock+0x21c/0x340 kernel/locking/lockdep.c:4635
 mark_usage kernel/locking/lockdep.c:4544 [inline]
 __lock_acquire+0xc0d/0x1f80 kernel/locking/lockdep.c:5010
 lock_acquire+0x23e/0x630 kernel/locking/lockdep.c:5669
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:350 [inline]
 inode_sb_list_del fs/inode.c:503 [inline]
 evict+0x161/0x620 fs/inode.c:654
 ntfs_fill_super+0x3ffc/0x47f0 fs/ntfs3/super.c:1239
 get_tree_bdev+0x402/0x620 fs/super.c:1294
 vfs_get_tree+0x8c/0x270 fs/super.c:1501
 do_new_mount+0x28f/0xae0 fs/namespace.c:3031
 do_mount fs/namespace.c:3374 [inline]
 __do_sys_mount fs/namespace.c:3583 [inline]
 __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3560
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f9a3188d62a
Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f9a325d3f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 000000000001f7f7 RCX: 00007f9a3188d62a
RDX: 000000002001f800 RSI: 000000002001f840 RDI: 00007f9a325d3fe0
RBP: 00007f9a325d4020 R08: 00007f9a325d4020 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 000000002001f800
R13: 000000002001f840 R14: 00007f9a325d3fe0 R15: 000000002001f880
 </TASK>


---
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.

                 reply	other threads:[~2023-02-27  5:45 UTC|newest]

Thread overview: [no followups] expand[flat|nested]  mbox.gz  Atom feed

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=000000000000840dae05f5a7fb53@google.com \
    --to=syzbot+3d15e7679037c3d35479@syzkaller.appspotmail.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=syzkaller-bugs@googlegroups.com \
    --cc=tglx@linutronix.de \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.