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| Started by | Jens Axboe <axboe@fb.com> |
|---|---|
| First post | 2016-04-01 16:10 +0200 |
| Last post | 2016-04-01 16:10 +0200 |
| Articles | 1 — 1 participant |
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Re: [lkp] [blk] 1131f64d74: BUG: unable to handle kernel NULL pointer dereference at 0000000000000008 Jens Axboe <axboe@fb.com> - 2016-04-01 16:10 +0200
| From | Jens Axboe <axboe@fb.com> |
|---|---|
| Date | 2016-04-01 16:10 +0200 |
| Subject | Re: [lkp] [blk] 1131f64d74: BUG: unable to handle kernel NULL pointer dereference at 0000000000000008 |
| Message-ID | <rj7VT-5vb-5@gated-at.bofh.it> |
On 04/01/2016 02:40 AM, kernel test robot wrote:
> FYI, we noticed the below changes on
>
> https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git wb-buf-throttle
> commit 1131f64d74958d495d8a6d5f9b981e86ed3beb7a ("blk-mq: don't throttle for virtual devices")
>
>
> +------------------------------------------+------------+------------+
> | | f21fb0e42c | 1131f64d74 |
> +------------------------------------------+------------+------------+
> | boot_successes | 6 | 0 |
> | boot_failures | 0 | 6 |
> | BUG:unable_to_handle_kernel | 0 | 6 |
> | Oops | 0 | 6 |
> | RIP:blk_wb_wait | 0 | 6 |
> | Kernel_panic-not_syncing:Fatal_exception | 0 | 6 |
> | backtrace:init | 0 | 6 |
> | backtrace:kernel_init_freeable | 0 | 6 |
> +------------------------------------------+------------+------------+
>
>
>
> [ 8.897469] FDC 0 is a S82078B
> [ 8.984074] brd: module loaded
> [ 9.030737] loop: module loaded
> [ 9.045718] BUG: unable to handle kernel NULL pointer dereference at 0000000000000008
> [ 9.048069] IP: [<ffffffff815336b0>] blk_wb_wait+0x5/0x174
Fixed:
http://git.kernel.dk/cgit/linux-block/commit/?h=wb-buf-throttle&id=811ea72827a70139a0520ec07b39d6a4baa62de1
it was introduced by this commit:
http://git.kernel.dk/cgit/linux-block/commit/?h=wb-buf-throttle&id=1131f64d74958d495d8a6d5f9b981e86ed3beb7a
and both will be folded for the next release.
--
Jens Axboe
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