kernel/linux.git, branch v4.19.117

Linux 4.19.117

2020-04-21T07:03:13+00:00

mm/vmalloc.c: move 'area->pages' after if statement

2020-04-21T07:03:13+00:00

commit 7ea362427c170061b8822dd41bafaa72b3bcb9ad upstream. If !area->pages statement is true where memory allocation fails, area is freed. In this case 'area->pages = pages' should not executed. So move 'area->pages = pages' after if statement. [akpm@linux-foundation.org: give area->pages the same treatment] Link: http://lkml.kernel.org/r/20190830035716.GA190684@LGEARND20B15 Signed-off-by: Austin Kim Acked-by: Michal Hocko Reviewed-by: Andrew Morton Cc: Uladzislau Rezki (Sony) Cc: Roman Gushchin Cc: Roman Penyaev Cc: Rick Edgecombe Cc: Mike Rapoport Cc: Andrey Ryabinin Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Lee Jones Signed-off-by: Greg Kroah-Hartman

wil6210: remove reset file from debugfs

2020-04-21T07:03:13+00:00

commit 32dcfe8316cdbd885542967c0c85f5b9de78874b upstream. Reset file is not used and may cause race conditions with operational driver if used. Signed-off-by: Karthick Gopalasubramanian Signed-off-by: Maya Erez Signed-off-by: Kalle Valo Signed-off-by: Lee Jones Signed-off-by: Greg Kroah-Hartman

wil6210: make sure Rx ring sizes are correlated

2020-04-21T07:03:13+00:00

commit 61e5ec044748486f06dec760a19dce78247b3ad8 upstream. When enlarging rx_ring_order module param, wil6210 fails to load because there are not enough Rx buffers. Fix this by enlarging number of Rx buffers at startup, if needed based on rx_ring_order. Signed-off-by: Dedy Lansky Signed-off-by: Maya Erez Signed-off-by: Kalle Valo Signed-off-by: Lee Jones Signed-off-by: Greg Kroah-Hartman

wil6210: add general initialization/size checks

2020-04-21T07:03:12+00:00

commit ac0e541ab2f2951845acee784ef487be40fb4c77 upstream. Initialize unset variable, and verify that mid is valid. Signed-off-by: Alexei Avshalom Lazar Signed-off-by: Maya Erez Signed-off-by: Kalle Valo Signed-off-by: Lee Jones Signed-off-by: Greg Kroah-Hartman

wil6210: ignore HALP ICR if already handled

2020-04-21T07:03:12+00:00

commit 979c9d8d01c482b1befb44dc639ecb907b5a37bd upstream. HALP ICR is set as long as the FW should stay awake. To prevent its multiple handling the driver masks this IRQ bit. However, if there is a different MISC ICR before the driver clears this bit, there is a risk of race condition between HALP mask and unmask. This race leads to HALP timeout, in case it is mistakenly masked. Add an atomic flag to indicate if HALP ICR should be handled. Signed-off-by: Maya Erez Signed-off-by: Kalle Valo Signed-off-by: Lee Jones Signed-off-by: Greg Kroah-Hartman

wil6210: check rx_buff_mgmt before accessing it

2020-04-21T07:03:12+00:00

commit d6a553c0c61b0b0219764e4d4fc14e385085f374 upstream. Make sure rx_buff_mgmt is initialized before accessing it. Signed-off-by: Dedy Lansky Signed-off-by: Maya Erez Signed-off-by: Kalle Valo Signed-off-by: Lee Jones Signed-off-by: Greg Kroah-Hartman

x86/resctrl: Fix invalid attempt at removing the default resource group

2020-04-21T07:03:12+00:00

commit b0151da52a6d4f3951ea24c083e7a95977621436 upstream. The default resource group ("rdtgroup_default") is associated with the root of the resctrl filesystem and should never be removed. New resource groups can be created as subdirectories of the resctrl filesystem and they can be removed from user space. There exists a safeguard in the directory removal code (rdtgroup_rmdir()) that ensures that only subdirectories can be removed by testing that the directory to be removed has to be a child of the root directory. A possible deadlock was recently fixed with 334b0f4e9b1b ("x86/resctrl: Fix a deadlock due to inaccurate reference"). This fix involved associating the private data of the "mon_groups" and "mon_data" directories to the resource group to which they belong instead of NULL as before. A consequence of this change was that the original safeguard code preventing removal of "mon_groups" and "mon_data" found in the root directory failed resulting in attempts to remove the default resource group that ends in a BUG: kernel BUG at mm/slub.c:3969! invalid opcode: 0000 [#1] SMP PTI Call Trace: rdtgroup_rmdir+0x16b/0x2c0 kernfs_iop_rmdir+0x5c/0x90 vfs_rmdir+0x7a/0x160 do_rmdir+0x17d/0x1e0 do_syscall_64+0x55/0x1d0 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Fix this by improving the directory removal safeguard to ensure that subdirectories of the resctrl root directory can only be removed if they are a child of the resctrl filesystem's root _and_ not associated with the default resource group. Fixes: 334b0f4e9b1b ("x86/resctrl: Fix a deadlock due to inaccurate reference") Reported-by: Sai Praneeth Prakhya Signed-off-by: Reinette Chatre Signed-off-by: Borislav Petkov Tested-by: Sai Praneeth Prakhya Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/884cbe1773496b5dbec1b6bd11bb50cffa83603d.1584461853.git.reinette.chatre@intel.com Signed-off-by: Greg Kroah-Hartman

x86/resctrl: Preserve CDP enable over CPU hotplug

2020-04-21T07:03:11+00:00

commit 9fe0450785abbc04b0ed5d3cf61fcdb8ab656b4b upstream. Resctrl assumes that all CPUs are online when the filesystem is mounted, and that CPUs remember their CDP-enabled state over CPU hotplug. This goes wrong when resctrl's CDP-enabled state changes while all the CPUs in a domain are offline. When a domain comes online, enable (or disable!) CDP to match resctrl's current setting. Fixes: 5ff193fbde20 ("x86/intel_rdt: Add basic resctrl filesystem support") Suggested-by: Reinette Chatre Signed-off-by: James Morse Signed-off-by: Borislav Petkov Cc: Link: https://lkml.kernel.org/r/20200221162105.154163-1-james.morse@arm.com Signed-off-by: Greg Kroah-Hartman

x86/microcode/AMD: Increase microcode PATCH_MAX_SIZE

2020-04-21T07:03:11+00:00

commit bdf89df3c54518eed879d8fac7577fcfb220c67e upstream. Future AMD CPUs will have microcode patches that exceed the default 4K patch size. Raise our limit. Signed-off-by: John Allen Signed-off-by: Borislav Petkov Cc: stable@vger.kernel.org # v4.14.. Link: https://lkml.kernel.org/r/20200409152931.GA685273@mojo.amd.com Signed-off-by: Greg Kroah-Hartman