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NFSv4/pNFS: Clear NFS_INO_LAYOUTCOMMIT in pnfs_mark_layout_stateid_invalid

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[ Upstream commit e0f8058f2c ]

Fixes a crash when layout is null during this call stack:

write_inode
    -> nfs4_write_inode
        -> pnfs_layoutcommit_inode

pnfs_set_layoutcommit relies on the lseg refcount to keep the layout
around. Need to clear NFS_INO_LAYOUTCOMMIT otherwise we might attempt
to reference a null layout.

Fixes: fe1cf9469d ("pNFS: Clear all layout segment state in pnfs_mark_layout_stateid_invalid")
Signed-off-by: Jonathan Curley <jcurley@purestorage.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jonathan Curley
2025-11-12 18:02:42 +00:00
committed by Greg Kroah-Hartman
parent fa561b29b7
commit 59947dff0f
1 changed files with 1 additions and 0 deletions
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fs/nfs/pnfs.c
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@@ -466,6 +466,7 @@ pnfs_mark_layout_stateid_invalid(struct pnfs_layout_hdr *lo,
struct pnfs_layout_segment *lseg, *next;
set_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags);
clear_bit(NFS_INO_LAYOUTCOMMIT, &NFS_I(lo->plh_inode)->flags);
list_for_each_entry_safe(lseg, next, &lo->plh_segs, pls_list)
pnfs_clear_lseg_state(lseg, lseg_list);
pnfs_clear_layoutreturn_info(lo);