scsi: target: iscsi: Fix race in discovery auth updates

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Separate configfs opens can concurrently update the discovery AuthMethod
parameter. Both callers may free the same value in
iscsi_update_param_value(), causing a double-free.

Protect the lookup and replacement with the discovery TPG access lock,
as used by the other TPG configfs parameter updates.

Fixes: e48354ce07 ("iscsi-target: Add iSCSI fabric support for target v4.1")
Signed-off-by: Linfeng Sun <linfeng.sun.dev@gmail.com>
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Link: https://patch.msgid.link/20260811124843.6817-1-linfeng.sun.dev@gmail.com
Signed-off-by: Martin K. Petersen (Oracle) <mkp@kernel.org>

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Linfeng Sun 2026-08-11 20:48:43 +08:00 • committed by Martin K. Petersen (Oracle)

parent 04a67a8b1a

commit e15b81f602

1 changed files with 19 additions and 7 deletions

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drivers/target/iscsi/iscsi_target_configfs.c

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