The patch titled bsdacct: fix access to invalid filp in acct_on() has been removed from the -mm tree. Its filename was bsdacct-fix-access-to-invalid-filp-in-acct_on.patch This patch was dropped because it was merged into mainline or a subsystem tree The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: bsdacct: fix access to invalid filp in acct_on() From: Renaud Lottiaux <renaud.lottiaux@xxxxxxxxxxx> The file opened in acct_on and freshly stored in the ns->bacct struct can be closed in acct_file_reopen by a concurrent call after we release acct_lock and before we call mntput(file->f_path.mnt). Record file->f_path.mnt in a local variable and use this variable only. Signed-off-by: Renaud Lottiaux <renaud.lottiaux@xxxxxxxxxxx> Signed-off-by: Louis Rilling <louis.rilling@xxxxxxxxxxx> Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- kernel/acct.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff -puN kernel/acct.c~bsdacct-fix-access-to-invalid-filp-in-acct_on kernel/acct.c --- a/kernel/acct.c~bsdacct-fix-access-to-invalid-filp-in-acct_on +++ a/kernel/acct.c @@ -215,6 +215,7 @@ static void acct_file_reopen(struct bsd_ static int acct_on(char *name) { struct file *file; + struct vfsmount *mnt; int error; struct pid_namespace *ns; struct bsd_acct_struct *acct = NULL; @@ -256,11 +257,12 @@ static int acct_on(char *name) acct = NULL; } - mnt_pin(file->f_path.mnt); + mnt = file->f_path.mnt; + mnt_pin(mnt); acct_file_reopen(ns->bacct, file, ns); spin_unlock(&acct_lock); - mntput(file->f_path.mnt); /* it's pinned, now give up active reference */ + mntput(mnt); /* it's pinned, now give up active reference */ kfree(acct); return 0; _ Patches currently in -mm which might be from renaud.lottiaux@xxxxxxxxxxx are origin.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html