Re: [PATCH 1/1] fix memory leak during adapter release by destroying gid_pn_req

On Mon, 20 Jul 2026 09:27:36 +0200, Nihar Panda wrote:

> When releasing an adapter we don't free the mempool `gid_pn_req` that is
> allocated during the enqueue. This leaks memory:
> 
>   unreferenced object 0xd8d29297de700 (size 256):
>     comm "(udev-worker)", pid 2105, jiffies 4294945794
>     hex dump (first 32 bytes):
>       00 00 00 00 de ad 4e ad ff ff ff ff 00 00 00 00  ......N.........
>       ff ff ff ff ff ff ff ff 00 0d c4 5f 67 9d 99 e0  ..........._g...
>     backtrace (crc 4a5b5da2):
>       [<000dc45f64da418c>] kmemleak_alloc+0x6c/0xa0
>       [<000dc45f62b430aa>] __kmalloc_cache_node_noprof+0x36a/0x4d0
>       [<000dc45f629a535a>] mempool_create_node_noprof+0xaa/0x150
>       [<000dc45ee2c065e6>] zfcp_allocate_low_mem_buffers+0x96/0x370 [zfcp]
>       [<000dc45ee2c070f8>] zfcp_adapter_enqueue+0x598/0xd40 [zfcp]
>       [<000dc45ee2c08eb0>] zfcp_ccw_set_online+0x160/0x210 [zfcp]
>       [<000dc45f643d4762>] ccw_device_set_online+0x232/0xd80
>       [<000dc45f643d53d4>] online_store_recog_and_online+0x124/0x390
>       [<000dc45f643d8238>] online_store+0x298/0x5b0
>       [<000dc45f62eb0a04>] kernfs_fop_write_iter+0x2c4/0x480
>       [<000dc45f62c81150>] new_sync_write+0x370/0x4b0
>       [<000dc45f62c87abe>] vfs_write+0x43e/0x5b0
>       [<000dc45f62c87ff4>] ksys_write+0x114/0x1f0
>       [<000dc45f621c4a16>] do_syscall+0x2f6/0x430
>       [<000dc45f64d9d5d8>] __do_syscall+0xc8/0x1c0
>       [<000dc45f64dc2224>] system_call+0x74/0xa0
> 
> [...]

Applied to 7.2/scsi-fixes, thanks!

[1/1] fix memory leak during adapter release by destroying gid_pn_req
      https://git.kernel.org/mkp/scsi/c/b601fa590e66

-- 
Martin K. Petersen