mtk-20170518/target/linux/generic/patches-3.6/930-crashlog.patch, branch reboot MTK 20170518 : Mediatek SDK based on OpenWRT Barrier Breaker kernel: remove kernel 3.6 2014-07-26T12:23:56+00:00 Hauke Mehrtens hauke@hauke-m.de 2014-07-26T12:23:56+00:00 009e36806b89a29141dbe28b170117f5330b06da kernel 3.6 is not used by any target any more, remove it. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> SVN-Revision: 41834 
kernel 3.6 is not used by any target any more, remove it.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

SVN-Revision: 41834
kernel: crashlog: Avoid out-of-bounds write 2013-08-21T20:59:25+00:00 Felix Fietkau nbd@openwrt.org 2013-08-21T20:59:25+00:00 3848e6a246192d42160034e106f838b791931dce vsnprintf returns the number of chars that would have been written, not the actual number of chars written. This can lead to crashlog_buf->len being too big which in turn can lead to get_maxlen() returning negative numbers. The length argument of kmsg_dump_get_buffer will be casted to a size_t which makes a negative input a big positive number allowing kmsg_dump_get_buffer to write out of bounds. Fix this by using vscnprintf which returns the actually written number of chars. Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com> SVN-Revision: 37820 
vsnprintf returns the number of chars that would have been written, not
the actual number of chars written. This can lead to crashlog_buf->len
being too big which in turn can lead to get_maxlen() returning negative
numbers. The length argument of kmsg_dump_get_buffer will be casted to
a size_t which makes a negative input a big positive number allowing
kmsg_dump_get_buffer to write out of bounds.

Fix this by using vscnprintf which returns the actually written number
of chars.

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>

SVN-Revision: 37820
generic: disable crashlog on ppc 2012-12-18T20:10:02+00:00 Gabor Juhos juhosg@openwrt.org 2012-12-18T20:10:02+00:00 2143de1a3db3deff78d1fe19b87d386975bcb1bf It causes panic on boot: [ 0.194287] __ioremap(): phys addr 0x1f00000 is RAM lr crashlog_init_fs [ 0.200902] Unable to handle kernel paging request for data at address 0x00000000 [ 0.208347] Faulting instruction address: 0xc026cb10 [ 0.213282] Oops: Kernel access of bad area, sig: 11 [#1] [ 0.218586] PowerPC 40x Platform [ 0.221783] Modules linked in: [ 0.224817] NIP: c026cb10 LR: c026cb10 CTR: c000c1b8 [ 0.229745] REGS: c1825ed0 TRAP: 0300 Not tainted (3.6.11) [ 0.235435] MSR: 00029030 <EE,ME,IR,DR> CR: 42004082 XER: 00000000 [ 0.241745] DEAR: 00000000, ESR: 00000000 [ 0.245724] TASK = c181e000[1] 'swapper' THREAD: c1824000 GPR00: c026cb10 c1825f80 c181e000 00000000 0000004b 0000004b c029a4dd 6f675f69 GPR08: 6e69745f c0290440 00000000 00000000 22004084 00000000 01ffc400 004011f8 GPR16: 00000001 ffffffff 00000000 007fff00 01ff6120 01f94298 01fff258 c02631b8 GPR24: c02604bc 00000019 c02a0000 c02a0000 c027c644 00000000 c02c0000 c02bd388 [ 0.279089] NIP [c026cb10] crashlog_init_fs+0x30/0xe0 [ 0.284095] LR [c026cb10] crashlog_init_fs+0x30/0xe0 [ 0.289000] Call Trace: [ 0.291442] [c1825f80] [c026cb10] crashlog_init_fs+0x30/0xe0 (unreliable) [ 0.298185] [c1825f90] [c00023fc] do_one_initcall+0xdc/0x1c8 [ 0.303812] [c1825fc0] [c02638c4] kernel_init+0x110/0x1a4 [ 0.309154] [c1825ff0] [c000ad4c] kernel_thread+0x4c/0x68 [ 0.314488] Instruction dump: [ 0.317429] 9421fff0 7c0802a6 bfc10008 3fc0c02c 90010014 3bfed388 3800fff4 807f0004 [ 0.325117] 2f830000 41be00a4 38804000 4bda2809 <81630000> 7c691b78 907ed388 6d605e11 Signed-off-by: Gabor Juhos <juhosg@openwrt.org> SVN-Revision: 34773 
It causes panic on boot:

[    0.194287] __ioremap(): phys addr 0x1f00000 is RAM lr crashlog_init_fs
[    0.200902] Unable to handle kernel paging request for data at address 0x00000000
[    0.208347] Faulting instruction address: 0xc026cb10
[    0.213282] Oops: Kernel access of bad area, sig: 11 [#1]
[    0.218586] PowerPC 40x Platform
[    0.221783] Modules linked in:
[    0.224817] NIP: c026cb10 LR: c026cb10 CTR: c000c1b8
[    0.229745] REGS: c1825ed0 TRAP: 0300   Not tainted  (3.6.11)
[    0.235435] MSR: 00029030 <EE,ME,IR,DR>  CR: 42004082  XER: 00000000
[    0.241745] DEAR: 00000000, ESR: 00000000
[    0.245724] TASK = c181e000[1] 'swapper' THREAD: c1824000
GPR00: c026cb10 c1825f80 c181e000 00000000 0000004b 0000004b c029a4dd 6f675f69
GPR08: 6e69745f c0290440 00000000 00000000 22004084 00000000 01ffc400 004011f8
GPR16: 00000001 ffffffff 00000000 007fff00 01ff6120 01f94298 01fff258 c02631b8
GPR24: c02604bc 00000019 c02a0000 c02a0000 c027c644 00000000 c02c0000 c02bd388
[    0.279089] NIP [c026cb10] crashlog_init_fs+0x30/0xe0
[    0.284095] LR [c026cb10] crashlog_init_fs+0x30/0xe0
[    0.289000] Call Trace:
[    0.291442] [c1825f80] [c026cb10] crashlog_init_fs+0x30/0xe0 (unreliable)
[    0.298185] [c1825f90] [c00023fc] do_one_initcall+0xdc/0x1c8
[    0.303812] [c1825fc0] [c02638c4] kernel_init+0x110/0x1a4
[    0.309154] [c1825ff0] [c000ad4c] kernel_thread+0x4c/0x68
[    0.314488] Instruction dump:
[    0.317429] 9421fff0 7c0802a6 bfc10008 3fc0c02c 90010014 3bfed388 3800fff4 807f0004
[    0.325117] 2f830000 41be00a4 38804000 4bda2809 <81630000> 7c691b78 907ed388 6d605e11

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

SVN-Revision: 34773
do not build crashlog on sparc too 2012-11-16T16:32:33+00:00 Florian Fainelli florian@openwrt.org 2012-11-16T16:32:33+00:00 8ad0b56ba50fa759d9c9747f9f931903da58c021 This is crashing the kernel in crashlog_init_fs(), until fixed, disable it for SPARC too. Signed-off-by: Florian Fainelli <florian@openwrt.org> SVN-Revision: 34213 
This is crashing the kernel in crashlog_init_fs(), until fixed, disable it
for SPARC too.

Signed-off-by: Florian Fainelli <florian@openwrt.org>

SVN-Revision: 34213
generic: fix crashlog patch for 3.6 2012-10-28T09:50:50+00:00 Gabor Juhos juhosg@openwrt.org 2012-10-28T09:50:50+00:00 9a37cf7ec68590d341c777f33f2ae6e5f9ef92bc kmsg_dump() uses an iterator to receive log buffer content since 3.5. Change the 'crashlog_do_dump' function in order to make it compatible with the new version. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> SVN-Revision: 33970 
kmsg_dump() uses an iterator to receive log buffer
content since 3.5. Change the 'crashlog_do_dump'
function in order to make it compatible with the
new version.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

SVN-Revision: 33970
make all 3.6 patches apply and build 2012-10-24T13:05:22+00:00 Florian Fainelli florian@openwrt.org 2012-10-24T13:05:22+00:00 7e856e5a97966fe89f6336783c0c676eb999e7cf SVN-Revision: 33911 
SVN-Revision: 33911
linux 3.6 support (work in progress) 2012-10-23T12:21:34+00:00 Imre Kaloz kaloz@openwrt.org 2012-10-23T12:21:34+00:00 949b46d13d1e21b596f505a2e69956565e365d77 SVN-Revision: 33897 
SVN-Revision: 33897