Carsten Emde fe63b94a43 tracing: prevent NULL pointer dereference in ftrace_raw_event_block_bio_bounce ... Booting 2.6.31 and executing echo 1 >/sys/kernel/debug/tracing/events/enable leads to BUG: unable to handle kernel NULL pointer dereference at (null) IP: [<c032a583>] ftrace_raw_event_block_bio_bounce+0x4b/0xb9 Apparently, bio = bio_map_user(q, NULL, uaddr, len, reading, gfp_mask); is called in block/blk-map.c:58 where bio->bi_bdev in set to NULL and still is NULL when an attempt is made to evaluate bio->bi_bdev->bd_dev in include/trace/events/block.h:189. The tracepoint should ensure bio->bi_bdev is not dereferenced, if NULL. Signed-off-by: Carsten Emde <C.Emde@osadl.org> LKML-Reference: <4AAAC9B1.9060505@osadl.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>		2009-09-12 21:31:19 -04:00
..
acpi	ACPI processor: force throttling state when BIOS returns incorrect value	2009-08-26 20:06:53 -07:00
asm-generic	mm: Pass virtual address to [__]p{te,ud,md}_free_tlb()	2009-07-27 12:10:38 -07:00
crypto	crypto: skcipher - Fix skcipher_dequeue_givcrypt NULL test	2009-08-29 20:44:04 +10:00
drm	drm/radeon: add GET_PARAM/INFO support for Z pipes	2009-08-21 19:10:30 +10:00
keys
linux	tracing: add lock depth to entries	2009-09-11 13:55:35 -04:00
math-emu
media	V4L/DVB (12283): gspca - sn9c20x: New subdriver for sn9c201 and sn9c202 bridges.	2009-07-24 14:03:30 -03:00
mtd
net	pkt_sched: Revert tasklet_hrtimer changes.	2009-09-01 17:59:25 -07:00
pcmcia
rdma
rxrpc
scsi	sd, sr: fix Driver 'sd' needs updating message	2009-06-21 12:01:27 -05:00
sound
trace	tracing: prevent NULL pointer dereference in ftrace_raw_event_block_bio_bounce	2009-09-12 21:31:19 -04:00
video	fbdev: s1d13xxxfb: add accelerated bitblt functions	2009-06-16 19:48:00 -07:00
xen
Kbuild	[SCSI] FC Pass Thru support	2009-06-12 14:20:05 -05:00