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| author |   James Bottomley <James.Bottomley@HansenPartnership.com> | 2017-07-31 15:49:54 +0200 |
|---|---|---|
| committer |   Helge Deller <deller@gmx.de> | 2017-07-31 16:43:13 +0200 |
| commit | 93964fd4ea6ab86a2d2853a9ae56ae0c24cbbe16 (patch) | |
| tree | 7e80f3a9417f4d2dedcd25502c29bc48a3817d0b /drivers/parisc/ccio-dma.c | |
| parent | parisc: Increase thread and stack size to 32kb (diff) | |
| download | linux-dev-93964fd4ea6ab86a2d2853a9ae56ae0c24cbbe16.tar.xz linux-dev-93964fd4ea6ab86a2d2853a9ae56ae0c24cbbe16.zip | |
parisc: pdc_stable: Fix locking when creating sysfs links
There's no need to take the write lock when creating sysfs links.
This patch fixes the following BUG:
BUG: sleeping function called from invalid context at mm/slab.h:416
in_atomic(): 1, irqs_disabled(): 0, pid: 1, name: swapper/0
CPU: 2 PID: 1 Comm: swapper/0 Not tainted 4.13.0-rc2-00110-g0b5477d9dabd #111
Backtrace:
[<0000000040217ac8>] show_stack+0x20/0x38
[<00000000406fbbb0>] dump_stack+0xb0/0x128
[<0000000040274090>] ___might_sleep+0x180/0x1b8
[<0000000040274144>] __might_sleep+0x7c/0xe8
[<0000000040373874>] kmem_cache_alloc+0x14c/0x1e0
[<0000000040419514>] __kernfs_new_node+0x84/0x1b8
[<000000004041b09c>] kernfs_new_node+0x3c/0x78
[<000000004041e040>] kernfs_create_link+0x40/0xd8
[<000000004041f320>] sysfs_do_create_link_sd.isra.0+0xb0/0x130
[<000000004041f3d4>] sysfs_create_link+0x34/0x58
[<000000004011b4a4>] pdc_stable_init+0x2c4/0x458
[<0000000040200250>] do_one_initcall+0x70/0x1d8
[<0000000040101644>] kernel_init_freeable+0x27c/0x390
[<000000004020be44>] kernel_init+0x24/0x1c0
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Reported-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: Helge Deller <deller@gmx.de>
Diffstat (limited to 'drivers/parisc/ccio-dma.c')
0 files changed, 0 insertions, 0 deletions