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* panic for md ddf (14disks/raid6) on kernel 6.6.161 but not on kernel 6.12.115
@ 2026-11-09  0:07 Wang Yugui
  0 siblings, 0 replies; only message in thread
From: Wang Yugui @ 2026-11-09  0:07 UTC (permalink / raw)
  To: linux-raid; +Cc: wangyugui

Hi,

I noticed a panic for md ddf(14disks/raid6) on kernel 6.6.161,
but not happen on kernel 6.12.115.

Call Trace:
 <TASK>
 percpu_ref_kill_and_confirm+0x39/0xc0
 __mddev_suspend+0x5c/0x1e0
 ? __kmem_cache_alloc_node+0x1bb/0x320
 ? _kstrtoull+0x3b/0x90
 raid_disks_store+0x4a/0x190
 md_attr_store+0x84/0x100
 kernfs_fop_write_iter+0x13b/0x1d0
 vfs_write+0x2bf/0x3e0
 ksys_write+0x63/0xe0
 do_syscall_64+0x62/0x90

Do we need some backuport for kernel 6.6.y?
any advice please.

Best Regards
Wang Yugui (wangyugui@e16-tech.com)
2026/11/09



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2026-11-09  0:07 panic for md ddf (14disks/raid6) on kernel 6.6.161 but not on kernel 6.12.115 Wang Yugui

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