From: Ingo Molnar <mingo@elte.hu>
To: Anton Altaparmakov <aia21@cam.ac.uk>
Cc: Miles Lane <miles.lane@gmail.com>,
LKML <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@osdl.org>,
Arjan van de Ven <arjan@infradead.org>
Subject: Re: 2.6.17-rc6-mm1 -- BUG: possible circular locking deadlock detected!
Date: Thu, 8 Jun 2006 13:23:06 +0200 [thread overview]
Message-ID: <20060608112306.GA4234@elte.hu> (raw)
In-Reply-To: <1149764032.10056.82.camel@imp.csi.cam.ac.uk>
* Anton Altaparmakov <aia21@cam.ac.uk> wrote:
> No it is not as explained above. Something has gotten confused
> somewhere because the order of events is the wrong way round...
ok, next try. Find below a chronological trace of the lock acquire and
new dependency events leading up the the circular dependency message.
The first (mrec_lock -> runlist.lock) dependency is:
new dependency: (&ni->mrec_lock){--..} => (&rl->lock){..--}
[<c0104bf2>] show_trace+0x12/0x20
[<c0104c19>] dump_stack+0x19/0x20
[<c0138bc9>] __lock_acquire+0x9a9/0xde0
[<c013946b>] lock_acquire+0x7b/0xa0
[<c0134c4c>] down_read+0x2c/0x40
[<c01c170c>] ntfs_readpage+0x83c/0x9a0
[<c0142f8c>] read_cache_page+0xac/0x150
[<c01d4f92>] map_mft_record+0x112/0x2c0
[<c01d240d>] ntfs_read_locked_inode+0x8d/0x15d0
[<c01d3ddb>] ntfs_read_inode_mount+0x48b/0xba0
[<c01e4f3b>] ntfs_fill_super+0xbfb/0x1a50
[<c016bf5e>] get_sb_bdev+0xde/0x120
[<c01e03fb>] ntfs_get_sb+0x1b/0x30
[<c016b583>] vfs_kern_mount+0x33/0xa0
[<c016b646>] do_kern_mount+0x36/0x50
[<c0181a4e>] do_mount+0x28e/0x640
[<c0181e6f>] sys_mount+0x6f/0xb0
[<c034233d>] sysenter_past_esp+0x56/0x8d
and the opposite (runlist.lock -> mrec_lock) dependency wants to get
created at:
[<c0340678>] mutex_lock+0x8/0x10
[<c01d4ed1>] map_mft_record+0x51/0x2c0
[<c01c5358>] ntfs_map_runlist_nolock+0x3d8/0x530
[<c01c5a21>] ntfs_map_runlist+0x41/0x70
[<c01c1791>] ntfs_readpage+0x8c1/0x9a0
[<c0142f8c>] read_cache_page+0xac/0x150
[<c01e2562>] load_system_files+0x472/0x2250
[<c01e4f96>] ntfs_fill_super+0xc56/0x1a50
[<c016bf5e>] get_sb_bdev+0xde/0x120
[<c01e03fb>] ntfs_get_sb+0x1b/0x30
[<c016b583>] vfs_kern_mount+0x33/0xa0
[<c016b646>] do_kern_mount+0x36/0x50
[<c0181a4e>] do_mount+0x28e/0x640
[<c0181e6f>] sys_mount+0x6f/0xb0
[<c034233d>] sysenter_past_esp+0x56/0x8d
does this trace make more sense?
Ingo
----{ NTFS lock events trace }------------->
new type c05bfcc4: &ni->mrec_lock
[<c0104bf2>] show_trace+0x12/0x20
[<c0104c19>] dump_stack+0x19/0x20
[<c0138f24>] __lock_acquire+0xd04/0xde0
[<c013946b>] lock_acquire+0x7b/0xa0
[<c034043f>] __mutex_lock_slowpath+0x6f/0x2a0
[<c0340678>] mutex_lock+0x8/0x10
[<c01d4ed1>] map_mft_record+0x51/0x2c0
[<c01d240d>] ntfs_read_locked_inode+0x8d/0x15d0
[<c01d3ddb>] ntfs_read_inode_mount+0x48b/0xba0
[<c01e4f3b>] ntfs_fill_super+0xbfb/0x1a50
[<c016bf5e>] get_sb_bdev+0xde/0x120
[<c01e03fb>] ntfs_get_sb+0x1b/0x30
[<c016b583>] vfs_kern_mount+0x33/0xa0
[<c016b646>] do_kern_mount+0x36/0x50
[<c0181a4e>] do_mount+0x28e/0x640
[<c0181e6f>] sys_mount+0x6f/0xb0
[<c034233d>] sysenter_past_esp+0x56/0x8d
acquire type [c05bfcc4] &ni->mrec_lock
[<c0104bf2>] show_trace+0x12/0x20
[<c0104c19>] dump_stack+0x19/0x20
[<c0138759>] __lock_acquire+0x539/0xde0
[<c013946b>] lock_acquire+0x7b/0xa0
[<c034043f>] __mutex_lock_slowpath+0x6f/0x2a0
[<c0340678>] mutex_lock+0x8/0x10
[<c01d4ed1>] map_mft_record+0x51/0x2c0
[<c01d240d>] ntfs_read_locked_inode+0x8d/0x15d0
[<c01d3ddb>] ntfs_read_inode_mount+0x48b/0xba0
[<c01e4f3b>] ntfs_fill_super+0xbfb/0x1a50
[<c016bf5e>] get_sb_bdev+0xde/0x120
[<c01e03fb>] ntfs_get_sb+0x1b/0x30
[<c016b583>] vfs_kern_mount+0x33/0xa0
[<c016b646>] do_kern_mount+0x36/0x50
[<c0181a4e>] do_mount+0x28e/0x640
[<c0181e6f>] sys_mount+0x6f/0xb0
[<c034233d>] sysenter_past_esp+0x56/0x8d
new dependency: (&s->s_umount#15){--..} => (&ni->mrec_lock){....}
[<c0104bf2>] show_trace+0x12/0x20
[<c0104c19>] dump_stack+0x19/0x20
[<c0138bc9>] __lock_acquire+0x9a9/0xde0
[<c013946b>] lock_acquire+0x7b/0xa0
[<c034043f>] __mutex_lock_slowpath+0x6f/0x2a0
[<c0340678>] mutex_lock+0x8/0x10
[<c01d4ed1>] map_mft_record+0x51/0x2c0
[<c01d240d>] ntfs_read_locked_inode+0x8d/0x15d0
[<c01d3ddb>] ntfs_read_inode_mount+0x48b/0xba0
[<c01e4f3b>] ntfs_fill_super+0xbfb/0x1a50
[<c016bf5e>] get_sb_bdev+0xde/0x120
[<c01e03fb>] ntfs_get_sb+0x1b/0x30
[<c016b583>] vfs_kern_mount+0x33/0xa0
[<c016b646>] do_kern_mount+0x36/0x50
[<c0181a4e>] do_mount+0x28e/0x640
[<c0181e6f>] sys_mount+0x6f/0xb0
[<c034233d>] sysenter_past_esp+0x56/0x8d
marked lock as {hardirq-on-W}:
(&ni->mrec_lock){-...}, at: [<c0340678>] mutex_lock+0x8/0x10
irq event stamp: 2309
hardirqs last enabled at (2307): [<c03420a7>] _spin_unlock_irqrestore+0x47/0x60
hardirqs last disabled at (2309): [<c011cad6>] vprintk+0x26/0x360
softirqs last enabled at (1988): [<c0121e0e>] __do_softirq+0xfe/0x110
softirqs last disabled at (1981): [<c0105049>] do_softirq+0x69/0x100
[<c0104bf2>] show_trace+0x12/0x20
[<c0104c19>] dump_stack+0x19/0x20
[<c0137d37>] mark_lock+0x1c7/0x6b0
[<c01394db>] mark_held_locks+0x4b/0xa0
[<c0139660>] trace_hardirqs_on+0x70/0x160
[<c034052f>] __mutex_lock_slowpath+0x15f/0x2a0
[<c0340678>] mutex_lock+0x8/0x10
[<c01d4ed1>] map_mft_record+0x51/0x2c0
[<c01d240d>] ntfs_read_locked_inode+0x8d/0x15d0
[<c01d3ddb>] ntfs_read_inode_mount+0x48b/0xba0
[<c01e4f3b>] ntfs_fill_super+0xbfb/0x1a50
[<c016bf5e>] get_sb_bdev+0xde/0x120
[<c01e03fb>] ntfs_get_sb+0x1b/0x30
[<c016b583>] vfs_kern_mount+0x33/0xa0
[<c016b646>] do_kern_mount+0x36/0x50
[<c0181a4e>] do_mount+0x28e/0x640
[<c0181e6f>] sys_mount+0x6f/0xb0
[<c034233d>] sysenter_past_esp+0x56/0x8d
marked lock as {softirq-on-W}:
(&ni->mrec_lock){--..}, at: [<c0340678>] mutex_lock+0x8/0x10
irq event stamp: 2309
hardirqs last enabled at (2307): [<c03420a7>] _spin_unlock_irqrestore+0x47/0x60
hardirqs last disabled at (2309): [<c011cad6>] vprintk+0x26/0x360
softirqs last enabled at (1988): [<c0121e0e>] __do_softirq+0xfe/0x110
softirqs last disabled at (1981): [<c0105049>] do_softirq+0x69/0x100
[<c0104bf2>] show_trace+0x12/0x20
[<c0104c19>] dump_stack+0x19/0x20
[<c0137d37>] mark_lock+0x1c7/0x6b0
[<c0139512>] mark_held_locks+0x82/0xa0
[<c01396a0>] trace_hardirqs_on+0xb0/0x160
[<c034052f>] __mutex_lock_slowpath+0x15f/0x2a0
[<c0340678>] mutex_lock+0x8/0x10
[<c01d4ed1>] map_mft_record+0x51/0x2c0
[<c01d240d>] ntfs_read_locked_inode+0x8d/0x15d0
[<c01d3ddb>] ntfs_read_inode_mount+0x48b/0xba0
[<c01e4f3b>] ntfs_fill_super+0xbfb/0x1a50
[<c016bf5e>] get_sb_bdev+0xde/0x120
[<c01e03fb>] ntfs_get_sb+0x1b/0x30
[<c016b583>] vfs_kern_mount+0x33/0xa0
[<c016b646>] do_kern_mount+0x36/0x50
[<c0181a4e>] do_mount+0x28e/0x640
[<c0181e6f>] sys_mount+0x6f/0xb0
[<c034233d>] sysenter_past_esp+0x56/0x8d
new dependency: (&ni->mrec_lock){--..} => (cpa_lock){++..}
[<c0104bf2>] show_trace+0x12/0x20
[<c0104c19>] dump_stack+0x19/0x20
[<c0138bc9>] __lock_acquire+0x9a9/0xde0
[<c013946b>] lock_acquire+0x7b/0xa0
[<c0342159>] _spin_lock_irqsave+0x39/0x50
[<c01135fc>] change_page_attr+0x1c/0x2a0
[<c01138aa>] kernel_map_pages+0x2a/0xa0
[<c0147f53>] get_page_from_freelist+0x253/0x3c0
[<c0148110>] __alloc_pages+0x50/0x2f0
[<c0142f65>] read_cache_page+0x85/0x150
[<c01d4f92>] map_mft_record+0x112/0x2c0
[<c01d240d>] ntfs_read_locked_inode+0x8d/0x15d0
[<c01d3ddb>] ntfs_read_inode_mount+0x48b/0xba0
[<c01e4f3b>] ntfs_fill_super+0xbfb/0x1a50
[<c016bf5e>] get_sb_bdev+0xde/0x120
[<c01e03fb>] ntfs_get_sb+0x1b/0x30
[<c016b583>] vfs_kern_mount+0x33/0xa0
[<c016b646>] do_kern_mount+0x36/0x50
[<c0181a4e>] do_mount+0x28e/0x640
[<c0181e6f>] sys_mount+0x6f/0xb0
[<c034233d>] sysenter_past_esp+0x56/0x8d
new dependency: (&ni->mrec_lock){--..} => (&inode->i_data.tree_lock){++..}
[<c0104bf2>] show_trace+0x12/0x20
[<c0104c19>] dump_stack+0x19/0x20
[<c0138bc9>] __lock_acquire+0x9a9/0xde0
[<c013946b>] lock_acquire+0x7b/0xa0
[<c0341c82>] _write_lock_irq+0x32/0x40
[<c0142181>] add_to_page_cache+0x41/0xd0
[<c014222b>] add_to_page_cache_lru+0x1b/0x40
[<c0142f17>] read_cache_page+0x37/0x150
[<c01d4f92>] map_mft_record+0x112/0x2c0
[<c01d240d>] ntfs_read_locked_inode+0x8d/0x15d0
[<c01d3ddb>] ntfs_read_inode_mount+0x48b/0xba0
[<c01e4f3b>] ntfs_fill_super+0xbfb/0x1a50
[<c016bf5e>] get_sb_bdev+0xde/0x120
[<c01e03fb>] ntfs_get_sb+0x1b/0x30
[<c016b583>] vfs_kern_mount+0x33/0xa0
[<c016b646>] do_kern_mount+0x36/0x50
[<c0181a4e>] do_mount+0x28e/0x640
[<c0181e6f>] sys_mount+0x6f/0xb0
[<c034233d>] sysenter_past_esp+0x56/0x8d
new dependency: (&ni->mrec_lock){--..} => (&inode->i_data.private_lock){--..}
[<c0104bf2>] show_trace+0x12/0x20
[<c0104c19>] dump_stack+0x19/0x20
[<c0138bc9>] __lock_acquire+0x9a9/0xde0
[<c013946b>] lock_acquire+0x7b/0xa0
[<c0341bbc>] _spin_lock+0x2c/0x40
[<c0168053>] create_empty_buffers+0x33/0xa0
[<c01c11e7>] ntfs_readpage+0x317/0x9a0
[<c0142f8c>] read_cache_page+0xac/0x150
[<c01d4f92>] map_mft_record+0x112/0x2c0
[<c01d240d>] ntfs_read_locked_inode+0x8d/0x15d0
[<c01d3ddb>] ntfs_read_inode_mount+0x48b/0xba0
[<c01e4f3b>] ntfs_fill_super+0xbfb/0x1a50
[<c016bf5e>] get_sb_bdev+0xde/0x120
[<c01e03fb>] ntfs_get_sb+0x1b/0x30
[<c016b583>] vfs_kern_mount+0x33/0xa0
[<c016b646>] do_kern_mount+0x36/0x50
[<c0181a4e>] do_mount+0x28e/0x640
[<c0181e6f>] sys_mount+0x6f/0xb0
[<c034233d>] sysenter_past_esp+0x56/0x8d
new type c05bfcbc: &rl->lock
[<c0104bf2>] show_trace+0x12/0x20
[<c0104c19>] dump_stack+0x19/0x20
[<c0138f24>] __lock_acquire+0xd04/0xde0
[<c013946b>] lock_acquire+0x7b/0xa0
[<c0134c4c>] down_read+0x2c/0x40
[<c01c170c>] ntfs_readpage+0x83c/0x9a0
[<c0142f8c>] read_cache_page+0xac/0x150
[<c01d4f92>] map_mft_record+0x112/0x2c0
[<c01d240d>] ntfs_read_locked_inode+0x8d/0x15d0
[<c01d3ddb>] ntfs_read_inode_mount+0x48b/0xba0
[<c01e4f3b>] ntfs_fill_super+0xbfb/0x1a50
[<c016bf5e>] get_sb_bdev+0xde/0x120
[<c01e03fb>] ntfs_get_sb+0x1b/0x30
[<c016b583>] vfs_kern_mount+0x33/0xa0
[<c016b646>] do_kern_mount+0x36/0x50
[<c0181a4e>] do_mount+0x28e/0x640
[<c0181e6f>] sys_mount+0x6f/0xb0
[<c034233d>] sysenter_past_esp+0x56/0x8d
acquire type [c05bfcbc] &rl->lock
[<c0104bf2>] show_trace+0x12/0x20
[<c0104c19>] dump_stack+0x19/0x20
[<c0138759>] __lock_acquire+0x539/0xde0
[<c013946b>] lock_acquire+0x7b/0xa0
[<c0134c4c>] down_read+0x2c/0x40
[<c01c170c>] ntfs_readpage+0x83c/0x9a0
[<c0142f8c>] read_cache_page+0xac/0x150
[<c01d4f92>] map_mft_record+0x112/0x2c0
[<c01d240d>] ntfs_read_locked_inode+0x8d/0x15d0
[<c01d3ddb>] ntfs_read_inode_mount+0x48b/0xba0
[<c01e4f3b>] ntfs_fill_super+0xbfb/0x1a50
[<c016bf5e>] get_sb_bdev+0xde/0x120
[<c01e03fb>] ntfs_get_sb+0x1b/0x30
[<c016b583>] vfs_kern_mount+0x33/0xa0
[<c016b646>] do_kern_mount+0x36/0x50
[<c0181a4e>] do_mount+0x28e/0x640
[<c0181e6f>] sys_mount+0x6f/0xb0
[<c034233d>] sysenter_past_esp+0x56/0x8d
marked lock as {hardirq-on-R}:
(&rl->lock){..-.}, at: [<c01c170c>] ntfs_readpage+0x83c/0x9a0
irq event stamp: 2440
hardirqs last enabled at (2439): [<c0342107>] _read_unlock_irqrestore+0x47/0x60
hardirqs last disabled at (2440): [<c011cad6>] vprintk+0x26/0x360
softirqs last enabled at (2436): [<c0121e0e>] __do_softirq+0xfe/0x110
softirqs last disabled at (2419): [<c0105049>] do_softirq+0x69/0x100
[<c0104bf2>] show_trace+0x12/0x20
[<c0104c19>] dump_stack+0x19/0x20
[<c0137d37>] mark_lock+0x1c7/0x6b0
[<c0138776>] __lock_acquire+0x556/0xde0
[<c013946b>] lock_acquire+0x7b/0xa0
[<c0134c4c>] down_read+0x2c/0x40
[<c01c170c>] ntfs_readpage+0x83c/0x9a0
[<c0142f8c>] read_cache_page+0xac/0x150
[<c01d4f92>] map_mft_record+0x112/0x2c0
[<c01d240d>] ntfs_read_locked_inode+0x8d/0x15d0
[<c01d3ddb>] ntfs_read_inode_mount+0x48b/0xba0
[<c01e4f3b>] ntfs_fill_super+0xbfb/0x1a50
[<c016bf5e>] get_sb_bdev+0xde/0x120
[<c01e03fb>] ntfs_get_sb+0x1b/0x30
[<c016b583>] vfs_kern_mount+0x33/0xa0
[<c016b646>] do_kern_mount+0x36/0x50
[<c0181a4e>] do_mount+0x28e/0x640
[<c0181e6f>] sys_mount+0x6f/0xb0
[<c034233d>] sysenter_past_esp+0x56/0x8d
marked lock as {softirq-on-R}:
(&rl->lock){..--}, at: [<c01c170c>] ntfs_readpage+0x83c/0x9a0
irq event stamp: 2440
hardirqs last enabled at (2439): [<c0342107>] _read_unlock_irqrestore+0x47/0x60
hardirqs last disabled at (2440): [<c011cad6>] vprintk+0x26/0x360
softirqs last enabled at (2436): [<c0121e0e>] __do_softirq+0xfe/0x110
softirqs last disabled at (2419): [<c0105049>] do_softirq+0x69/0x100
[<c0104bf2>] show_trace+0x12/0x20
[<c0104c19>] dump_stack+0x19/0x20
[<c0137d37>] mark_lock+0x1c7/0x6b0
[<c0138882>] __lock_acquire+0x662/0xde0
[<c013946b>] lock_acquire+0x7b/0xa0
[<c0134c4c>] down_read+0x2c/0x40
[<c01c170c>] ntfs_readpage+0x83c/0x9a0
[<c0142f8c>] read_cache_page+0xac/0x150
[<c01d4f92>] map_mft_record+0x112/0x2c0
[<c01d240d>] ntfs_read_locked_inode+0x8d/0x15d0
[<c01d3ddb>] ntfs_read_inode_mount+0x48b/0xba0
[<c01e4f3b>] ntfs_fill_super+0xbfb/0x1a50
[<c016bf5e>] get_sb_bdev+0xde/0x120
[<c01e03fb>] ntfs_get_sb+0x1b/0x30
[<c016b583>] vfs_kern_mount+0x33/0xa0
[<c016b646>] do_kern_mount+0x36/0x50
[<c0181a4e>] do_mount+0x28e/0x640
[<c0181e6f>] sys_mount+0x6f/0xb0
[<c034233d>] sysenter_past_esp+0x56/0x8d
new dependency: (&ni->mrec_lock){--..} => (&rl->lock){..--}
[<c0104bf2>] show_trace+0x12/0x20
[<c0104c19>] dump_stack+0x19/0x20
[<c0138bc9>] __lock_acquire+0x9a9/0xde0
[<c013946b>] lock_acquire+0x7b/0xa0
[<c0134c4c>] down_read+0x2c/0x40
[<c01c170c>] ntfs_readpage+0x83c/0x9a0
[<c0142f8c>] read_cache_page+0xac/0x150
[<c01d4f92>] map_mft_record+0x112/0x2c0
[<c01d240d>] ntfs_read_locked_inode+0x8d/0x15d0
[<c01d3ddb>] ntfs_read_inode_mount+0x48b/0xba0
[<c01e4f3b>] ntfs_fill_super+0xbfb/0x1a50
[<c016bf5e>] get_sb_bdev+0xde/0x120
[<c01e03fb>] ntfs_get_sb+0x1b/0x30
[<c016b583>] vfs_kern_mount+0x33/0xa0
[<c016b646>] do_kern_mount+0x36/0x50
[<c0181a4e>] do_mount+0x28e/0x640
[<c0181e6f>] sys_mount+0x6f/0xb0
[<c034233d>] sysenter_past_esp+0x56/0x8d
new dependency: (&ni->mrec_lock){--..} => (&lo->lo_lock){....}
[<c0104bf2>] show_trace+0x12/0x20
[<c0104c19>] dump_stack+0x19/0x20
[<c0138bc9>] __lock_acquire+0x9a9/0xde0
[<c013946b>] lock_acquire+0x7b/0xa0
[<c0341f62>] _spin_lock_irq+0x32/0x40
[<c0276e69>] loop_make_request+0x49/0x100
[<c01f3f51>] generic_make_request+0x1c1/0x270
[<c01f404e>] submit_bio+0x4e/0xe0
[<c016731d>] submit_bh+0xcd/0x130
[<c01c173e>] ntfs_readpage+0x86e/0x9a0
[<c0142f8c>] read_cache_page+0xac/0x150
[<c01d4f92>] map_mft_record+0x112/0x2c0
[<c01d240d>] ntfs_read_locked_inode+0x8d/0x15d0
[<c01d3ddb>] ntfs_read_inode_mount+0x48b/0xba0
[<c01e4f3b>] ntfs_fill_super+0xbfb/0x1a50
[<c016bf5e>] get_sb_bdev+0xde/0x120
[<c01e03fb>] ntfs_get_sb+0x1b/0x30
[<c016b583>] vfs_kern_mount+0x33/0xa0
[<c016b646>] do_kern_mount+0x36/0x50
[<c0181a4e>] do_mount+0x28e/0x640
[<c0181e6f>] sys_mount+0x6f/0xb0
[<c034233d>] sysenter_past_esp+0x56/0x8d
new dependency: (&ni->mrec_lock){--..} => (&q->lock){++..}
[<c0104bf2>] show_trace+0x12/0x20
[<c0104c19>] dump_stack+0x19/0x20
[<c0138bc9>] __lock_acquire+0x9a9/0xde0
[<c013946b>] lock_acquire+0x7b/0xa0
[<c0342159>] _spin_lock_irqsave+0x39/0x50
[<c01140cb>] complete+0x1b/0x60
[<c0276ed7>] loop_make_request+0xb7/0x100
[<c01f3f51>] generic_make_request+0x1c1/0x270
[<c01f404e>] submit_bio+0x4e/0xe0
[<c016731d>] submit_bh+0xcd/0x130
[<c01c173e>] ntfs_readpage+0x86e/0x9a0
[<c0142f8c>] read_cache_page+0xac/0x150
[<c01d4f92>] map_mft_record+0x112/0x2c0
[<c01d240d>] ntfs_read_locked_inode+0x8d/0x15d0
[<c01d3ddb>] ntfs_read_inode_mount+0x48b/0xba0
[<c01e4f3b>] ntfs_fill_super+0xbfb/0x1a50
[<c016bf5e>] get_sb_bdev+0xde/0x120
[<c01e03fb>] ntfs_get_sb+0x1b/0x30
[<c016b583>] vfs_kern_mount+0x33/0xa0
[<c016b646>] do_kern_mount+0x36/0x50
[<c0181a4e>] do_mount+0x28e/0x640
[<c0181e6f>] sys_mount+0x6f/0xb0
[<c034233d>] sysenter_past_esp+0x56/0x8d
new dependency: (&ni->mrec_lock){--..} => (ide_lock){++..}
[<c0104bf2>] show_trace+0x12/0x20
[<c0104c19>] dump_stack+0x19/0x20
[<c0138bc9>] __lock_acquire+0x9a9/0xde0
[<c013946b>] lock_acquire+0x7b/0xa0
[<c0341f62>] _spin_lock_irq+0x32/0x40
[<c01f30d1>] generic_unplug_device+0x11/0x30
[<c01f25e2>] blk_backing_dev_unplug+0x12/0x20
[<c0276f57>] loop_unplug+0x37/0x40
[<c01f25e2>] blk_backing_dev_unplug+0x12/0x20
[<c0166269>] block_sync_page+0x39/0x50
[<c0141cc8>] sync_page+0x38/0x50
[<c033fc69>] __wait_on_bit_lock+0x49/0x70
[<c0141dcb>] __lock_page+0x6b/0x80
[<c0142fe5>] read_cache_page+0x105/0x150
[<c01d4f92>] map_mft_record+0x112/0x2c0
[<c01d240d>] ntfs_read_locked_inode+0x8d/0x15d0
[<c01d3ddb>] ntfs_read_inode_mount+0x48b/0xba0
[<c01e4f3b>] ntfs_fill_super+0xbfb/0x1a50
[<c016bf5e>] get_sb_bdev+0xde/0x120
[<c01e03fb>] ntfs_get_sb+0x1b/0x30
[<c016b583>] vfs_kern_mount+0x33/0xa0
[<c016b646>] do_kern_mount+0x36/0x50
[<c0181a4e>] do_mount+0x28e/0x640
[<c0181e6f>] sys_mount+0x6f/0xb0
[<c034233d>] sysenter_past_esp+0x56/0x8d
new dependency: (&ni->mrec_lock){--..} => (&rq->lock){++..}
[<c0104bf2>] show_trace+0x12/0x20
[<c0104c19>] dump_stack+0x19/0x20
[<c0138bc9>] __lock_acquire+0x9a9/0xde0
[<c013946b>] lock_acquire+0x7b/0xa0
[<c0341f62>] _spin_lock_irq+0x32/0x40
[<c033ebba>] schedule+0xea/0xb80
[<c033f678>] io_schedule+0x28/0x40
[<c0141ccd>] sync_page+0x3d/0x50
[<c033fc69>] __wait_on_bit_lock+0x49/0x70
[<c0141dcb>] __lock_page+0x6b/0x80
[<c0142fe5>] read_cache_page+0x105/0x150
[<c01d4f92>] map_mft_record+0x112/0x2c0
[<c01d240d>] ntfs_read_locked_inode+0x8d/0x15d0
[<c01d3ddb>] ntfs_read_inode_mount+0x48b/0xba0
[<c01e4f3b>] ntfs_fill_super+0xbfb/0x1a50
[<c016bf5e>] get_sb_bdev+0xde/0x120
[<c01e03fb>] ntfs_get_sb+0x1b/0x30
[<c016b583>] vfs_kern_mount+0x33/0xa0
[<c016b646>] do_kern_mount+0x36/0x50
[<c0181a4e>] do_mount+0x28e/0x640
[<c0181e6f>] sys_mount+0x6f/0xb0
[<c034233d>] sysenter_past_esp+0x56/0x8d
acquire type [c05bfcc4] &ni->mrec_lock
[<c0104bf2>] show_trace+0x12/0x20
[<c0104c19>] dump_stack+0x19/0x20
[<c0138759>] __lock_acquire+0x539/0xde0
[<c013946b>] lock_acquire+0x7b/0xa0
[<c034043f>] __mutex_lock_slowpath+0x6f/0x2a0
[<c0340678>] mutex_lock+0x8/0x10
[<c01d4ed1>] map_mft_record+0x51/0x2c0
[<c01d240d>] ntfs_read_locked_inode+0x8d/0x15d0
[<c01d4545>] ntfs_iget+0x55/0x80
[<c01e216a>] load_system_files+0x7a/0x2250
[<c01e4f96>] ntfs_fill_super+0xc56/0x1a50
[<c016bf5e>] get_sb_bdev+0xde/0x120
[<c01e03fb>] ntfs_get_sb+0x1b/0x30
[<c016b583>] vfs_kern_mount+0x33/0xa0
[<c016b646>] do_kern_mount+0x36/0x50
[<c0181a4e>] do_mount+0x28e/0x640
[<c0181e6f>] sys_mount+0x6f/0xb0
[<c034233d>] sysenter_past_esp+0x56/0x8d
acquire type [c05bfcbc] &rl->lock
[<c0104bf2>] show_trace+0x12/0x20
[<c0104c19>] dump_stack+0x19/0x20
[<c0138759>] __lock_acquire+0x539/0xde0
[<c013946b>] lock_acquire+0x7b/0xa0
[<c0134c4c>] down_read+0x2c/0x40
[<c01c170c>] ntfs_readpage+0x83c/0x9a0
[<c0142f8c>] read_cache_page+0xac/0x150
[<c01e2562>] load_system_files+0x472/0x2250
[<c01e4f96>] ntfs_fill_super+0xc56/0x1a50
[<c016bf5e>] get_sb_bdev+0xde/0x120
[<c01e03fb>] ntfs_get_sb+0x1b/0x30
[<c016b583>] vfs_kern_mount+0x33/0xa0
[<c016b646>] do_kern_mount+0x36/0x50
[<c0181a4e>] do_mount+0x28e/0x640
[<c0181e6f>] sys_mount+0x6f/0xb0
[<c034233d>] sysenter_past_esp+0x56/0x8d
new dependency: (&s->s_umount#15){--..} => (&rl->lock){..--}
[<c0104bf2>] show_trace+0x12/0x20
[<c0104c19>] dump_stack+0x19/0x20
[<c0138bc9>] __lock_acquire+0x9a9/0xde0
[<c013946b>] lock_acquire+0x7b/0xa0
[<c0134c4c>] down_read+0x2c/0x40
[<c01c170c>] ntfs_readpage+0x83c/0x9a0
[<c0142f8c>] read_cache_page+0xac/0x150
[<c01e2562>] load_system_files+0x472/0x2250
[<c01e4f96>] ntfs_fill_super+0xc56/0x1a50
[<c016bf5e>] get_sb_bdev+0xde/0x120
[<c01e03fb>] ntfs_get_sb+0x1b/0x30
[<c016b583>] vfs_kern_mount+0x33/0xa0
[<c016b646>] do_kern_mount+0x36/0x50
[<c0181a4e>] do_mount+0x28e/0x640
[<c0181e6f>] sys_mount+0x6f/0xb0
[<c034233d>] sysenter_past_esp+0x56/0x8d
acquire type [c05bfcbc] &rl->lock
[<c0104bf2>] show_trace+0x12/0x20
[<c0104c19>] dump_stack+0x19/0x20
[<c0138759>] __lock_acquire+0x539/0xde0
[<c013946b>] lock_acquire+0x7b/0xa0
[<c0134c8c>] down_write+0x2c/0x50
[<c01c5a00>] ntfs_map_runlist+0x20/0x70
[<c01c1791>] ntfs_readpage+0x8c1/0x9a0
[<c0142f8c>] read_cache_page+0xac/0x150
[<c01e2562>] load_system_files+0x472/0x2250
[<c01e4f96>] ntfs_fill_super+0xc56/0x1a50
[<c016bf5e>] get_sb_bdev+0xde/0x120
[<c01e03fb>] ntfs_get_sb+0x1b/0x30
[<c016b583>] vfs_kern_mount+0x33/0xa0
[<c016b646>] do_kern_mount+0x36/0x50
[<c0181a4e>] do_mount+0x28e/0x640
[<c0181e6f>] sys_mount+0x6f/0xb0
[<c034233d>] sysenter_past_esp+0x56/0x8d
marked lock as {hardirq-on-W}:
(&rl->lock){-.--}, at: [<c01c5a00>] ntfs_map_runlist+0x20/0x70
irq event stamp: 2940
hardirqs last enabled at (2939): [<c0342403>] restore_nocheck+0x12/0x15
hardirqs last disabled at (2940): [<c011cad6>] vprintk+0x26/0x360
softirqs last enabled at (2938): [<c0121e0e>] __do_softirq+0xfe/0x110
softirqs last disabled at (2923): [<c0105049>] do_softirq+0x69/0x100
[<c0104bf2>] show_trace+0x12/0x20
[<c0104c19>] dump_stack+0x19/0x20
[<c0137d37>] mark_lock+0x1c7/0x6b0
[<c0138588>] __lock_acquire+0x368/0xde0
[<c013946b>] lock_acquire+0x7b/0xa0
[<c0134c8c>] down_write+0x2c/0x50
[<c01c5a00>] ntfs_map_runlist+0x20/0x70
[<c01c1791>] ntfs_readpage+0x8c1/0x9a0
[<c0142f8c>] read_cache_page+0xac/0x150
[<c01e2562>] load_system_files+0x472/0x2250
[<c01e4f96>] ntfs_fill_super+0xc56/0x1a50
[<c016bf5e>] get_sb_bdev+0xde/0x120
[<c01e03fb>] ntfs_get_sb+0x1b/0x30
[<c016b583>] vfs_kern_mount+0x33/0xa0
[<c016b646>] do_kern_mount+0x36/0x50
[<c0181a4e>] do_mount+0x28e/0x640
[<c0181e6f>] sys_mount+0x6f/0xb0
[<c034233d>] sysenter_past_esp+0x56/0x8d
marked lock as {softirq-on-W}:
(&rl->lock){----}, at: [<c01c5a00>] ntfs_map_runlist+0x20/0x70
irq event stamp: 2940
hardirqs last enabled at (2939): [<c0342403>] restore_nocheck+0x12/0x15
hardirqs last disabled at (2940): [<c011cad6>] vprintk+0x26/0x360
softirqs last enabled at (2938): [<c0121e0e>] __do_softirq+0xfe/0x110
softirqs last disabled at (2923): [<c0105049>] do_softirq+0x69/0x100
[<c0104bf2>] show_trace+0x12/0x20
[<c0104c19>] dump_stack+0x19/0x20
[<c0137d37>] mark_lock+0x1c7/0x6b0
[<c0138882>] __lock_acquire+0x662/0xde0
[<c013946b>] lock_acquire+0x7b/0xa0
[<c0134c8c>] down_write+0x2c/0x50
[<c01c5a00>] ntfs_map_runlist+0x20/0x70
[<c01c1791>] ntfs_readpage+0x8c1/0x9a0
[<c0142f8c>] read_cache_page+0xac/0x150
[<c01e2562>] load_system_files+0x472/0x2250
[<c01e4f96>] ntfs_fill_super+0xc56/0x1a50
[<c016bf5e>] get_sb_bdev+0xde/0x120
[<c01e03fb>] ntfs_get_sb+0x1b/0x30
[<c016b583>] vfs_kern_mount+0x33/0xa0
[<c016b646>] do_kern_mount+0x36/0x50
[<c0181a4e>] do_mount+0x28e/0x640
[<c0181e6f>] sys_mount+0x6f/0xb0
[<c034233d>] sysenter_past_esp+0x56/0x8d
acquire type [c05bfcc4] &ni->mrec_lock
[<c0104bf2>] show_trace+0x12/0x20
[<c0104c19>] dump_stack+0x19/0x20
[<c0138759>] __lock_acquire+0x539/0xde0
[<c013946b>] lock_acquire+0x7b/0xa0
[<c034043f>] __mutex_lock_slowpath+0x6f/0x2a0
[<c0340678>] mutex_lock+0x8/0x10
[<c01d4ed1>] map_mft_record+0x51/0x2c0
[<c01c5358>] ntfs_map_runlist_nolock+0x3d8/0x530
[<c01c5a21>] ntfs_map_runlist+0x41/0x70
[<c01c1791>] ntfs_readpage+0x8c1/0x9a0
[<c0142f8c>] read_cache_page+0xac/0x150
[<c01e2562>] load_system_files+0x472/0x2250
[<c01e4f96>] ntfs_fill_super+0xc56/0x1a50
[<c016bf5e>] get_sb_bdev+0xde/0x120
[<c01e03fb>] ntfs_get_sb+0x1b/0x30
[<c016b583>] vfs_kern_mount+0x33/0xa0
[<c016b646>] do_kern_mount+0x36/0x50
[<c0181a4e>] do_mount+0x28e/0x640
[<c0181e6f>] sys_mount+0x6f/0xb0
[<c034233d>] sysenter_past_esp+0x56/0x8d
=====================================================
[ BUG: possible circular locking deadlock detected! ]
-----------------------------------------------------
mount/2406 is trying to acquire lock:
(&ni->mrec_lock){--..}, at: [<c0340678>] mutex_lock+0x8/0x10
but task is already holding lock:
(&rl->lock){----}, at: [<c01c5a00>] ntfs_map_runlist+0x20/0x70
which lock already depends on the new lock,
which could lead to circular deadlocks!
the existing dependency chain (in reverse order) is:
-> #1 (&rl->lock){----}:
[<c013946b>] lock_acquire+0x7b/0xa0
[<c0134c4c>] down_read+0x2c/0x40
[<c01c170c>] ntfs_readpage+0x83c/0x9a0
[<c0142f8c>] read_cache_page+0xac/0x150
[<c01d4f92>] map_mft_record+0x112/0x2c0
[<c01d240d>] ntfs_read_locked_inode+0x8d/0x15d0
[<c01d3ddb>] ntfs_read_inode_mount+0x48b/0xba0
[<c01e4f3b>] ntfs_fill_super+0xbfb/0x1a50
[<c016bf5e>] get_sb_bdev+0xde/0x120
[<c01e03fb>] ntfs_get_sb+0x1b/0x30
[<c016b583>] vfs_kern_mount+0x33/0xa0
[<c016b646>] do_kern_mount+0x36/0x50
[<c0181a4e>] do_mount+0x28e/0x640
[<c0181e6f>] sys_mount+0x6f/0xb0
[<c034233d>] sysenter_past_esp+0x56/0x8d
-> #0 (&ni->mrec_lock){--..}:
[<c013946b>] lock_acquire+0x7b/0xa0
[<c034043f>] __mutex_lock_slowpath+0x6f/0x2a0
[<c0340678>] mutex_lock+0x8/0x10
[<c01d4ed1>] map_mft_record+0x51/0x2c0
[<c01c5358>] ntfs_map_runlist_nolock+0x3d8/0x530
[<c01c5a21>] ntfs_map_runlist+0x41/0x70
[<c01c1791>] ntfs_readpage+0x8c1/0x9a0
[<c0142f8c>] read_cache_page+0xac/0x150
[<c01e2562>] load_system_files+0x472/0x2250
[<c01e4f96>] ntfs_fill_super+0xc56/0x1a50
[<c016bf5e>] get_sb_bdev+0xde/0x120
[<c01e03fb>] ntfs_get_sb+0x1b/0x30
[<c016b583>] vfs_kern_mount+0x33/0xa0
[<c016b646>] do_kern_mount+0x36/0x50
[<c0181a4e>] do_mount+0x28e/0x640
[<c0181e6f>] sys_mount+0x6f/0xb0
[<c034233d>] sysenter_past_esp+0x56/0x8d
other info that might help us debug this:
2 locks held by mount/2406:
#0: (&s->s_umount#15){--..}, at: [<c016bb8d>] sget+0x11d/0x2f0
#1: (&rl->lock){----}, at: [<c01c5a00>] ntfs_map_runlist+0x20/0x70
stack backtrace:
[<c0104bf2>] show_trace+0x12/0x20
[<c0104c19>] dump_stack+0x19/0x20
[<c0136e61>] print_circular_bug_tail+0x61/0x70
[<c013896f>] __lock_acquire+0x74f/0xde0
[<c013946b>] lock_acquire+0x7b/0xa0
[<c034043f>] __mutex_lock_slowpath+0x6f/0x2a0
[<c0340678>] mutex_lock+0x8/0x10
[<c01d4ed1>] map_mft_record+0x51/0x2c0
[<c01c5358>] ntfs_map_runlist_nolock+0x3d8/0x530
[<c01c5a21>] ntfs_map_runlist+0x41/0x70
[<c01c1791>] ntfs_readpage+0x8c1/0x9a0
[<c0142f8c>] read_cache_page+0xac/0x150
[<c01e2562>] load_system_files+0x472/0x2250
[<c01e4f96>] ntfs_fill_super+0xc56/0x1a50
[<c016bf5e>] get_sb_bdev+0xde/0x120
[<c01e03fb>] ntfs_get_sb+0x1b/0x30
[<c016b583>] vfs_kern_mount+0x33/0xa0
[<c016b646>] do_kern_mount+0x36/0x50
[<c0181a4e>] do_mount+0x28e/0x640
[<c0181e6f>] sys_mount+0x6f/0xb0
[<c034233d>] sysenter_past_esp+0x56/0x8d
NTFS volume version 1.2.
NTFS-fs warning (device loop0): load_system_files(): Disabling sparse support due to NTFS volume version 1.2 (need at least version 3.0).
next prev parent reply other threads:[~2006-06-08 11:23 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-08 4:27 2.6.17-rc6-mm1 -- BUG: possible circular locking deadlock detected! Miles Lane
2006-06-08 7:32 ` Anton Altaparmakov
2006-06-08 9:55 ` Ingo Molnar
2006-06-08 10:53 ` Anton Altaparmakov
2006-06-08 11:23 ` Ingo Molnar [this message]
2006-06-09 8:09 ` Anton Altaparmakov
2006-06-10 7:59 ` Ingo Molnar
2006-06-10 8:48 ` Anton Altaparmakov
2006-06-11 5:31 ` Ingo Molnar
2006-06-11 7:10 ` Anton Altaparmakov
2006-06-12 8:31 ` Ingo Molnar
2006-06-12 8:47 ` Anton Altaparmakov
2006-06-12 9:40 ` Ingo Molnar
2006-06-12 10:24 ` Anton Altaparmakov
2006-06-12 10:56 ` Ingo Molnar
2006-06-13 5:41 ` Miles Lane
2006-06-13 21:18 ` Ingo Molnar
2006-06-08 16:11 ` Ingo Molnar
2006-06-08 21:17 ` Anton Altaparmakov
2006-06-09 7:19 ` Ingo Molnar
2006-06-09 8:31 ` Anton Altaparmakov
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=20060608112306.GA4234@elte.hu \
--to=mingo@elte.hu \
--cc=aia21@cam.ac.uk \
--cc=akpm@osdl.org \
--cc=arjan@infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=miles.lane@gmail.com \
/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.