The patch titled
linux-next: avoid genhd.c oops
has been added to the -mm tree. Its filename is
linux-next-avoid-genhdc-oops.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: linux-next: avoid genhd.c oops
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
BUG: unable to handle kernel NULL pointer dereference at 00000000
IP: [<c03cb7fb>] klist_next+0xb/0xb0
*pde = 00000000
Oops: 0000 [#1] SMP
last sysfs file:
Dumping ftrace buffer:
(ftrace buffer empty)
Modules linked in:
Pid: 1262, comm: mount Not tainted (2.6.27-rc5 #6)
EIP: 0060:[<c03cb7fb>] EFLAGS: 00010286 CPU: 0
EIP is at klist_next+0xb/0xb0
EAX: 00000000 EBX: 00000000 ECX: f61d7f2c EDX: f6aa0700
ESI: 00000000 EDI: f6aa0700 EBP: f61d7ef8 ESP: f61d7ee4
DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
Process mount (pid: 1262, ti=f61d6000 task=f667b6b0 task.ti=f61d6000)
Stack: f61d7f00 fffffff4 00000000 f64b5b40 f6aa0700 f61d7f04 c02d03a7 c03f42dc
f61d7f0c c027fcc2 f61d7f48 c01a7e1e 00000400 b7fa6000 f65406d8 f64b5b60
00000000 0000003b 00000001 00000000 00000000 00000000 f7012da0 fffffffb
Call Trace:
[<c02d03a7>] ? class_dev_iter_next+0x17/0x40
[<c027fcc2>] ? disk_seqf_next+0x12/0x20
[<c01a7e1e>] ? seq_read+0x1ee/0x2d0
[<c01a7c30>] ? seq_read+0x0/0x2d0
[<c01c4a8c>] ? proc_reg_read+0x5c/0x90
[<c018f574>] ? vfs_read+0x94/0x150
[<c028db28>] ? copy_to_user+0x48/0x60
[<c01c4a30>] ? proc_reg_read+0x0/0x90
[<c018f96d>] ? sys_read+0x3d/0x70
[<c010318d>] ? sysenter_do_call+0x12/0x31
=======================
Code: 55 83 c0 0c 89 e5 ba 90 b9 3c c0 e8 30 d3 eb ff 5d c3 8d b4 26 00 00 00 00 8d bc 27 00 00 00 00 55 89 e5 57 56 89 c6 53 83 ec 08 <8b> 00 8b 7e 04 8b 50 28 89 55 f0 e8 95 30 01 00 85 ff 74 71 8b
EIP: [<c03cb7fb>] klist_next+0xb/0xb0 SS:ESP 0068:f61d7ee4
Cc: Jens Axboe <jens.axboe@xxxxxxxxxx>
Cc: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
block/genhd.c | 2 ++
1 file changed, 2 insertions(+)
diff -puN block/genhd.c~linux-next-avoid-genhdc-oops block/genhd.c
--- a/block/genhd.c~linux-next-avoid-genhdc-oops
+++ a/block/genhd.c
@@ -674,6 +674,8 @@ static void *disk_seqf_next(struct seq_f
struct device *dev;
(*pos)++;
+ if (seqf->private == NULL)
+ return NULL;
dev = class_dev_iter_next(seqf->private);
if (dev)
return dev_to_disk(dev);
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
origin.patch
linux-next.patch
next-remove-localversion.patch
linux-next-avoid-genhdc-oops.patch
drivers-mfd-ucb1400_corec-needs-gpio.patch
drivers-mfd-ucb1400_corec-further-unbork.patch
kbuild-ftrace-dont-assume-that-scripts-recordmcountpl-is-executable.patch
git-acpi.patch
acpi-ec-dont-degrade-to-poll-mode-at-storm-automatically-cleanup.patch
toshiba_acpi-add-support-for-bluetooth-toggling-through-rfkill-v7-fix.patch
toshiba_acpi-add-support-for-bluetooth-toggling-through-rfkill-v7-fix-fix.patch
zero-based-percpu-use-vmlinux_symbol-in-include-asm-generic-vmlinuxldsh.patch
x86-make-poll_idle-behave-more-like-the-other-idle-methods-checkpatch-fixes.patch
git-alsa-tiwai.patch
drivers-rtc-rtc-bq4802c-dont-use-bin_2_bcd-and-bcd_2_bin.patch
git-powerpc.patch
fs-sysfs-dirc-remove-unused-__sysfs_get_dentry.patch
git-drm.patch
fs-dlm-configc-choose-better-identifiers.patch
tick-schedc-suppress-needless-timer-reprogramming.patch
drivers-input-touchscreen-ucb1400_tsc-needs-gpio.patch
git-jg-misc.patch
git-kvm.patch
led-driver-for-leds-on-pcengines-alix2-and-alix3-boards.patch
libata-blackfin-pata-driver-add-proper-pm-operation-into-atapi-driver-fix.patch
git-mtd.patch
sundance-set-carrier-status-on-link-change-events.patch
cassini-use-request_firmware.patch
e1000e-avoid-duplicated-output-of-device-name-in-kernel-warning-checkpatch-fixes.patch
e1000e-avoid-duplicated-output-of-device-name-in-kernel-warning-fix.patch
backlight-driver-for-tabletkiosk-sahara-touchit-213-tablet-pc.patch
backlight-driver-for-tabletkiosk-sahara-touchit-213-tablet-pc-update-2-checkpatch-fixes.patch
git-battery.patch
git-pci-next.patch
pci-tidy-pme-support-messages-checkpatch-fixes.patch
scsi-gdthc-use-unaligned-access-helpers.patch
drivers-scsi-device_handler-scsi_dh_emcc-suppress-warning.patch
drivers-rtc-kconfig-dont-build-rtc-cmoso-on-sparc32.patch
git-xtensa.patch
modules-remove-stop_machine-during-module-load-checkpatch-fixes.patch
scsi-dpt_i2o-is-bust-on-ia64.patch
drivers-media-video-cafe_ccicc-needs-mmh.patch
e1000e-prevent-corruption-of-eeprom-nvm.patch
drivers-net-mlx4-allocc-needs-mmh.patch
mm-page_allocc-free_area_init_nodes-fix-inappropriate-use-of-enum.patch
vmscan-give-referenced-active-and-unmapped-pages-a-second-trip-around-the-lru.patch
vm-dont-run-touch_buffer-during-buffercache-lookups.patch
vmscan-move-isolate_lru_page-to-vmscanc.patch
define-page_file_cache-function.patch
vmscan-split-lru-lists-into-anon-file-sets.patch
unevictable-lru-infrastructure.patch
unevictable-lru-page-statistics.patch
mlock-mlocked-pages-are-unevictable.patch
mlock-mlocked-pages-are-unevictable-fix.patch
mmap-handle-mlocked-pages-during-map-remap-unmap.patch
mmap-handle-mlocked-pages-during-map-remap-unmap-mlock-resubmit-locked_vm-adjustment-as-separate-patch-fix.patch
vmscan-unevictable-lru-scan-sysctl.patch
mlock-make-mlock-error-return-posixly-correct-fix.patch
mm-rewrite-vmap-layer-fix.patch
mm-rewrite-vmap-layer-fix-fix.patch
mm-rewrite-vmap-layer-fix-fix-fix.patch
h8300-generic_bug-support-checkpatch-fixes.patch
pm-rework-disabling-of-user-mode-helpers-during-suspend-hibernation-cleanup.patch
container-freezer-add-tif_freeze-flag-to-all-architectures-fix.patch
container-freezer-implement-freezer-cgroup-subsystem-checkpatch-fixes.patch
container-freezer-implement-freezer-cgroup-subsystem-uninline-thaw_process-fix.patch
separate-atomic_t-declaration-from-asm-atomich-into-asm-atomic_defh-fix.patch
separate-atomic_t-declaration-from-asm-atomich-into-asm-atomic_defh-fix-fix.patch
fix-a-race-condtion-of-oops_in_progress-fix.patch
vsprintf-use-new-vsprintf-symbolic-function-pointer-format-cleanup.patch
autofs4-track-uid-and-gid-of-last-mount-requester-fix.patch
autofs4-add-miscellaneous-device-for-ioctls-fix.patch
autofs4-add-miscellaneous-device-for-ioctls-fix-2.patch
autofs4-add-miscellaneous-device-for-ioctls-fix-fix-3.patch
rtc-add-device-driver-for-dallas-ds3234-spi-rtc-chip-fix.patch
fb-push-down-the-bkl-in-the-ioctl-handler-checkpatch-fixes.patch
viafb-viafbmodes-viafbtxt-fix-fix.patch
viafb-accelc-accelh-checkpatch-fixes.patch
viafb-dvic-dvih-globalc-and-globalh-checkpatch-fixes.patch
viafb-hwc-hwh-checkpatch-fixes.patch
viafb-viafbdevc-viafbdevh-checkpatch-fixes.patch
fbdev-kconfig-update-fix.patch
eink_apollofb-new-driver-for-apollo-eink-controller.patch
cgroups-fix-probable-race-with-put_css_set-and-find_css_set-fix.patch
memrlimit-add-memrlimit-controller-accounting-and-control-mm_owner-fix-checkpatch-fixes.patch
message-queues-increase-range-limits-checkpatch-fixes.patch
applicomc-fix-apparently-broken-code-in-do_ac_read.patch
drivers-char-tpm-tpmc-fix-error-patch-memory-leak.patch
gru-driver-minor-updates-fix.patch
gcov-architecture-specific-compile-flag-adjustments-powerpc-moved-stuff.patch
nilfs2-continuous-snapshotting-file-system-fix.patch
nilfs2-continuous-snapshotting-file-system-fix-fix-2.patch
reiser4.patch
reiser4-tree_lock-fixes.patch
reiser4-tree_lock-fixes-fix.patch
reiser4-semaphore-fix.patch
slb-drop-kmem-cache-argument-from-constructor-reiser4.patch
reiser4-suid.patch
reiser4-track-upstream-changes.patch
page-owner-tracking-leak-detector.patch
nr_blockdev_pages-in_interrupt-warning.patch
slab-leaks3-default-y.patch
put_bh-debug.patch
shrink_slab-handle-bad-shrinkers.patch
getblk-handle-2tb-devices.patch
getblk-handle-2tb-devices-fix.patch
undeprecate-pci_find_device.patch
notify_change-callers-must-hold-i_mutex.patch
profile-likely-unlikely-macros.patch
drivers-net-bonding-bond_sysfsc-suppress-uninitialized-var-warning.patch
w1-build-fix.patch
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