Hello!
I'm working on OMAP3530 based project.
We are now porting from kernel 2.6.29 (based on OMAP35x-PSP-SDK-02.01.03.11), to 2.6.37 (based on AM35x-OMAP35x-LINUX-PSP-04.02.00.07).
When doing untar to a large file (90MB) on the MMC, my system's free memory drops gradually, until it goes lower than 1873 (I assume, since this is the value of /proc/sys/vm/min_free_kbytes, I don't get the chance to check exactly...), I get the output attache below. It also happens when I do the same action on my NAND flash (mounted with jffs2 filesystem)
The problem did not occur in the previous kernel, so I think this is either a configuration problem or a bug...
Can anyone help me with this?
Thanks,
Tamar
root@omap3evm:/media/mmcblk0p1# tar -xzf large_file.tar.gz -C my_folder &
root@omap3evm:/media/mmcblk0p1# cat /proc/meminfo
MemTotal: 206464 kB
MemFree: 2876 kB
Buffers: 1608 kB
Cached: 157012 kB
SwapCached: 0 kB
Active: 8144 kB
Inactive: 151488 kB
Active(anon): 1108 kB
Inactive(anon): 4 kB
Active(file): 7036 kB
Inactive(file): 151484 kB
Unevictable: 0 kB
Mlocked: 0 kB
SwapTotal: 0 kB
SwapFree: 0 kB
Dirty: 12788 kB
Writeback: 3140 kB
AnonPages: 1044 kB
Mapped: 1008 kB
Shmem: 96 kB
Slab: 16584 kB
SReclaimable: 9672 kB
SUnreclaim: 6912 kB
KernelStack: 424 kB
PageTables: 124 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 103232 kB
Committed_AS: 3344 kB
VmallocTotal: 688128 kB
VmallocUsed: 1972 kB
VmallocChunk: 685948 kB
root@omap3evm:/media/mmcblk0p1# [ 936.044433]
[ 936.044464] =================================
[ 936.050567] [ INFO: inconsistent lock state ]
[ 936.055145] 2.6.37 #249
[ 936.057708] ---------------------------------
[ 936.062286] inconsistent {RECLAIM_FS-ON-W} -> {IN-RECLAIM_FS-W} usage.
[ 936.069152] kswapd0/414 [HC0[0]:SC0[0]:HE1:SE1] takes:
[ 936.074523] (&f->sem){+.+.?.}, at: [<c018bfec>] jffs2_do_clear_inode+0x18/0x104
[ 936.082336] {RECLAIM_FS-ON-W} state was registered at:
[ 936.087738] [<c008e6ac>] mark_held_locks+0x60/0x84
[ 936.092956] [<c008e78c>] lockdep_trace_alloc+0xbc/0xec
[ 936.098541] [<c00d3ed0>] __kmalloc+0x50/0x108
[ 936.103302] [<c018c5b0>] jffs2_do_read_inode_internal+0x38/0x1ac4
[ 936.109893] [<c018e2bc>] jffs2_do_read_inode+0x1ec/0x20c
[ 936.115661] [<c0194514>] jffs2_iget+0x70/0x324
[ 936.120513] [<c0194a60>] jffs2_do_fill_super+0x168/0x230
[ 936.126281] [<c025c0e4>] mount_mtd_aux+0x4c/0xe0
[ 936.131347] [<c025c300>] mount_mtd+0x138/0x168
[ 936.136199] [<c019546c>] jffs2_mount+0x10/0x18
[ 936.141052] [<c00d8934>] vfs_kern_mount+0xa0/0x1c8
[ 936.146270] [<c00d8aa0>] do_kern_mount+0x34/0xd8
[ 936.151306] [<c00eeaf8>] do_mount+0x688/0x6e8
[ 936.156066] [<c00eebdc>] sys_mount+0x84/0xc4
[ 936.160736] [<c0008dc4>] do_mount_root+0x1c/0xb0
[ 936.165771] [<c000903c>] mount_block_root+0xf8/0x210
[ 936.171173] [<c00091f4>] mount_root+0xa0/0xbc
[ 936.175933] [<c0009368>] prepare_namespace+0x158/0x1b0
[ 936.181518] [<c0008708>] kernel_init+0x10c/0x14c
[ 936.186553] [<c003d790>] kernel_thread_exit+0x0/0x8
[ 936.191894] irq event stamp: 359626
[ 936.195556] hardirqs last enabled at (359626): [<c00b3340>] free_hot_cold_page+0x19c/0x1b0
[ 936.204315] hardirqs last disabled at (359625): [<c00b31f4>] free_hot_cold_page+0x50/0x1b0
[ 936.213012] softirqs last enabled at (358537): [<c006bdf0>] irq_exit+0x50/0x9c
[ 936.220703] softirqs last disabled at (358526): [<c006bdf0>] irq_exit+0x50/0x9c
[ 936.228363]
[ 936.228393] other info that might help us debug this:
[ 936.235229] 2 locks held by kswapd0/414:
[ 936.239349] #0: (shrinker_rwsem){++++..}, at: [<c00b9864>] shrink_slab+0x24/0x180
[ 936.247406] #1: (iprune_sem){++++.-}, at: [<c00ea414>] shrink_icache_memory+0x30/0x2ac
[ 936.255950]
[ 936.255950] stack backtrace:
[ 936.260559] [<c00424d8>] (unwind_backtrace+0x0/0xec) from [<c008dfe0>] (print_usage_bug+0x170/0x1b4)
[ 936.270141] [<c008dfe0>] (print_usage_bug+0x170/0x1b4) from [<c008e380>] (mark_lock+0x35c/0x628)
[ 936.279388] [<c008e380>] (mark_lock+0x35c/0x628) from [<c008fd6c>] (__lock_acquire+0x734/0x17f0)
[ 936.288604] [<c008fd6c>] (__lock_acquire+0x734/0x17f0) from [<c0090e88>] (lock_acquire+0x60/0x74)
[ 936.297943] [<c0090e88>] (lock_acquire+0x60/0x74) from [<c04036d4>] (mutex_lock_nested+0x60/0x2e4)
[ 936.307342] [<c04036d4>] (mutex_lock_nested+0x60/0x2e4) from [<c018bfec>] (jffs2_do_clear_inode+0x18/0x104)
[ 936.317596] [<c018bfec>] (jffs2_do_clear_inode+0x18/0x104) from [<c00e9864>] (evict+0x20/0x94)
[ 936.326629] [<c00e9864>] (evict+0x20/0x94) from [<c00e9f24>] (dispose_list+0x28/0x88)
[ 936.334869] [<c00e9f24>] (dispose_list+0x28/0x88) from [<c00ea64c>] (shrink_icache_memory+0x268/0x2ac)
[ 936.344665] [<c00ea64c>] (shrink_icache_memory+0x268/0x2ac) from [<c00b991c>] (shrink_slab+0xdc/0x180)
[ 936.354431] [<c00b991c>] (shrink_slab+0xdc/0x180) from [<c00b9da0>] (kswapd+0x3e0/0x59c)
[ 936.362945] [<c00b9da0>] (kswapd+0x3e0/0x59c) from [<c007d944>] (kthread+0x84/0x8c)
[ 936.371002] [<c007d944>] (kthread+0x84/0x8c) from [<c003d790>] (kernel_thread_exit+0x0/0x8)
