Re: [PATCH] block: Fix cloning of requests with a special payload

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On 6/27/18 1:55 PM, Bart Van Assche wrote:
> This patch avoids that removing a path controlled by the dm-mpath driver
> while mkfs is running triggers the following kernel bug:
> 
>     kernel BUG at block/blk-core.c:3347!
>     invalid opcode: 0000 [#1] PREEMPT SMP KASAN
>     CPU: 20 PID: 24369 Comm: mkfs.ext4 Not tainted 4.18.0-rc1-dbg+ #2
>     RIP: 0010:blk_end_request_all+0x68/0x70
>     Call Trace:
>      <IRQ>
>      dm_softirq_done+0x326/0x3d0 [dm_mod]
>      blk_done_softirq+0x19b/0x1e0
>      __do_softirq+0x128/0x60d
>      irq_exit+0x100/0x110
>      smp_call_function_single_interrupt+0x90/0x330
>      call_function_single_interrupt+0xf/0x20
>      </IRQ>

Thanks Bart, applied for 4.18.

-- 
Jens Axboe




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