Artem Bityutskiy d3f6e6c666 UBI: do not oops when erroneous PEB is scheduled for scrubbing ... When an erroneous PEB is scheduling for scrubbing, we end up with the following oops: [<c0162404>] (prot_queue_del+0x0/0x50) from [<c01635b4>] (ubi_wl_scrub_peb+0xec/0x13c) [<c01634c8>] (ubi_wl_scrub_peb+0x0/0x13c) from [<c01603bc>] (ubi_eba_read_leb+0x200/0x428) [<c01601bc>] (ubi_eba_read_leb+0x0/0x428) from [<c015e3c0>] (ubi_leb_read+0xe8/0x138) [<c015e2d8>] (ubi_leb_read+0x0/0x138) from [<c00d6918>] (ubifs_start_scan+0x7c/0xf4) [<c00d689c>] (ubifs_start_scan+0x0/0xf4) from [<c00e3650>] (ubifs_recover_leb+0x3c/0x730) [<c00e3614>] (ubifs_recover_leb+0x0/0x730) from [<c00e444c>] (ubifs_recover_log_leb+0xc8/0x2dc) [<c00e4384>] (ubifs_recover_log_leb+0x0/0x2dc) from [<c00d7c20>] (ubifs_replay_journal+0xb90/0x13a4) [<c00d7090>] (ubifs_replay_journal+0x0/0x13a4) from [<c00cdd68>] (ubifs_fill_super+0xb84/0x1054) [<c00cd1e4>] (ubifs_fill_super+0x0/0x1054) from [<c00ced04>] (ubifs_get_sb+0xc4/0x2ac) [<c00cec40>] (ubifs_get_sb+0x0/0x2ac) from [<c007f04c>] (vfs_kern_mount+0x58/0x94) [<c007eff4>] (vfs_kern_mount+0x0/0x94) from [<c007f0e8>] (do_kern_mount+0x40/0xe8) [<c007f0a8>] (do_kern_mount+0x0/0xe8) from [<c0095628>] (do_new_mount+0x68/0x8c) [<c00955c0>] (do_new_mount+0x0/0x8c) from [<c00957a8>] (do_mount+0x15c/0x1b8) [<c009564c>] (do_mount+0x0/0x1b8) from [<c0095890>] (sys_mount+0x8c/0xd4) [<c0095804>] (sys_mount+0x0/0xd4) from [<c0023c00>] (ret_fast_syscall+0x0/0x2c) Kernel panic - not syncing: Fatal exception The problem is that 'ubi_wl_scrub_peb()' does not expect that PEBs may be in the erroneous tree, which is a bug. This patch fixes the bug and adds corresponding check to 'ubi_wl_scrub_peb()'. Now it will simply ignore erroneous PEBs, instead of causing an oops. Reported-by: Matthieu CASTET <matthieu.castet@parrot.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>		2010-08-30 13:32:31 +03:00
..
build.c	UBI: do not warn unnecessarily	2010-08-02 07:21:19 +03:00
cdev.c	UBI: eliminate update of list_for_each_entry loop cursor	2010-08-30 10:19:11 +03:00
debug.c
debug.h	UBI: add write checking	2010-02-01 15:16:37 +02:00
eba.c	UBI: do not warn unnecessarily	2010-08-02 07:21:19 +03:00
gluebi.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
io.c	UBI: fix error message and compilation warnings	2010-06-14 08:47:49 +03:00
kapi.c	UBI: fix s/then/than/ typos	2010-05-07 08:33:10 +03:00
Kconfig	UBI: fix s/then/than/ typos	2010-05-07 08:33:10 +03:00
Kconfig.debug	UBI: fix kconfig unmet dependency	2010-08-30 13:31:34 +03:00
Makefile
misc.c
scan.c	UBI: fix forward compatibility	2010-08-30 10:19:11 +03:00
scan.h	UBI: introduce eraseblock counter variables	2010-06-04 11:30:43 +03:00
ubi-media.h
ubi.h	UBI: introduce a new IO return code	2010-06-04 11:30:42 +03:00
upd.c
vmt.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
vtbl.c	UBI: misc comment fixes	2010-05-07 08:33:32 +03:00
wl.c	UBI: do not oops when erroneous PEB is scheduled for scrubbing	2010-08-30 13:32:31 +03:00