This is a note to let you know that I've just added the patch titled ACPICA: Tables: Don't release ACPI_MTX_TABLES in acpi_tb_install_standard_table(). to the 4.0-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: acpica-tables-don-t-release-acpi_mtx_tables-in-acpi_tb_install_standard_table.patch and it can be found in the queue-4.0 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 77ddc2fe08329e375505bc36a3df3233fe57317b Mon Sep 17 00:00:00 2001 From: Octavian Purdila <octavian.purdila@xxxxxxxxx> Date: Mon, 13 Apr 2015 11:49:05 +0800 Subject: ACPICA: Tables: Don't release ACPI_MTX_TABLES in acpi_tb_install_standard_table(). From: Octavian Purdila <octavian.purdila@xxxxxxxxx> commit 77ddc2fe08329e375505bc36a3df3233fe57317b upstream. ACPICA commit c70434d4da13e65b6163c79a5aa16b40193631c7 ACPI_MTX_TABLES is acquired and released by the callers of acpi_tb_install_standard_table() so releasing it in the function itself is causing the following error in Linux kernel if the table is reloaded: ACPI Error: Mutex [0x2] is not acquired, cannot release (20141107/utmutex-321) Call Trace: [<ffffffff81b0bd48>] dump_stack+0x4f/0x7b [<ffffffff81546bf5>] acpi_ut_release_mutex+0x47/0x67 [<ffffffff81544357>] acpi_load_table+0x73/0xcb Link: https://github.com/acpica/acpica/commit/c70434d4 Signed-off-by: Octavian Purdila <octavian.purdila@xxxxxxxxx> Signed-off-by: Lv Zheng <lv.zheng@xxxxxxxxx> Signed-off-by: Bob Moore <robert.moore@xxxxxxxxx> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/acpi/acpica/tbinstal.c | 1 - 1 file changed, 1 deletion(-) --- a/drivers/acpi/acpica/tbinstal.c +++ b/drivers/acpi/acpica/tbinstal.c @@ -346,7 +346,6 @@ acpi_tb_install_standard_table(acpi_phys */ acpi_tb_uninstall_table(&new_table_desc); *table_index = i; - (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); return_ACPI_STATUS(AE_OK); } } Patches currently in stable-queue which might be from octavian.purdila@xxxxxxxxx are queue-4.0/acpica-tables-don-t-release-acpi_mtx_tables-in-acpi_tb_install_standard_table.patch -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html