- 20 Nov, 2016 40 commits
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Dan Carpenter authored
commit 8a545f18 upstream. We can't pass error pointers to kfree() or it causes an oops. Fixes: 52b209f7 ('get rid of hostfs_read_inode()') Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
Richard Weinberger <richard@nod.at> Signed-off-by:
Ben Hutchings <ben@decadent.org.uk>
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Jia He authored
commit 649920c6 upstream. In powerpc servers with large memory(32TB), we watched several soft lockups for hugepage under stress tests. The call traces are as follows: 1. get_page_from_freelist+0x2d8/0xd50 __alloc_pages_nodemask+0x180/0xc20 alloc_fresh_huge_page+0xb0/0x190 set_max_huge_pages+0x164/0x3b0 2. prep_new_huge_page+0x5c/0x100 alloc_fresh_huge_page+0xc8/0x190 set_max_huge_pages+0x164/0x3b0 This patch fixes such soft lockups. It is safe to call cond_resched() there because it is out of spin_lock/unlock section. Link: http://lkml.kernel.org/r/1469674442-14848-1-git-send-email-hejianet@gmail.comSigned-off-by:
Jia He <hejianet@gmail.com> Reviewed-by:
Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Acked-by:
Michal Hocko <mhocko@suse.com> Acked-by:
Dave Hansen <dave.hansen@linux.intel.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org> [bwh: Backported to 3.2: adjust context] Signed-off-by:
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Mike Snitzer authored
commit 99f3c90d upstream. When the corrupt_bio_byte feature was introduced it caused READ bios to no longer be errored with -EIO during the down_interval. This had to do with the complexity of needing to submit READs if the corrupt_bio_byte feature was used. Fix it so READ bios are properly errored with -EIO; doing so early in flakey_map() as long as there isn't a match for the corrupt_bio_byte feature. Fixes: a3998799 ("dm flakey: add corrupt_bio_byte feature") Reported-by:
Akira Hayakawa <ruby.wktk@gmail.com> Signed-off-by:
Mike Snitzer <snitzer@redhat.com> [bwh: Backported to 3.2: in flakey_end_io(), keep using bio_submitted_while_down instead of pb->bio_submitted] Signed-off-by:
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Konstantin Neumoin authored
commit 37cf99e0 upstream. The balloon has a special mechanism that is subscribed to the oom notification which leads to deflation for a fixed number of pages. The number is always fixed even when the balloon is fully deflated. But leak_balloon did not expect that the pages to deflate will be more than taken, and raise a "BUG" in balloon_page_dequeue when page list will be empty. So, the simplest solution would be to check that the number of releases pages is less or equal to the number taken pages. Signed-off-by:
Konstantin Neumoin <kneumoin@virtuozzo.com> Signed-off-by:
Denis V. Lunev <den@openvz.org> CC: Michael S. Tsirkin <mst@redhat.com> Signed-off-by:
Michael S. Tsirkin <mst@redhat.com> [bwh: Backported to 3.2: adjust context] Signed-off-by:
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David Howells authored
commit f7d66562 upstream. x86_64 needs to use compat_sys_keyctl for 32-bit userspace rather than calling sys_keyctl(). The latter will work in a lot of cases, thereby hiding the issue. Reported-by:
Stephan Mueller <smueller@chronox.de> Tested-by:
David Howells <dhowells@redhat.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: keyrings@vger.kernel.org Cc: linux-security-module@vger.kernel.org Link: http://lkml.kernel.org/r/146961615805.14395.5581949237156769439.stgit@warthog.procyon.org.ukSigned-off-by:
Ingo Molnar <mingo@kernel.org> [bwh: Backported to 3.2: compat system call table is in ia32entry.S] Signed-off-by:
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Theodore Ts'o authored
commit 829fa70d upstream. A number of fuzzing failures seem to be caused by allocation bitmaps or other metadata blocks being pointed at the superblock. This can cause kernel BUG or WARNings once the superblock is overwritten, so validate the group descriptor blocks to make sure this doesn't happen. Signed-off-by:
Theodore Ts'o <tytso@mit.edu> Signed-off-by:
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James Hogan authored
commit 68c5cf5a upstream. AT_VECTOR_SIZE_ARCH should be defined with the maximum number of NEW_AUX_ENT entries that ARCH_DLINFO can contain, but it wasn't defined for s390 at all even though ARCH_DLINFO can contain one NEW_AUX_ENT when VDSO is enabled. This shouldn't be a problem as AT_VECTOR_SIZE_BASE includes space for AT_BASE_PLATFORM which s390 doesn't use, but lets define it now and add the comment above ARCH_DLINFO as found in several other architectures to remind future modifiers of ARCH_DLINFO to keep AT_VECTOR_SIZE_ARCH up to date. Fixes: b020632e ("[S390] introduce vdso on s390") Signed-off-by:
James Hogan <james.hogan@imgtec.com> Signed-off-by:
Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: linux-s390@vger.kernel.org [bwh: Backported to 3.2: adjust filename] Signed-off-by:
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Soheil Hassas Yeganeh authored
commit f626300a upstream. tcp_select_initial_window() intends to advertise a window scaling for the maximum possible window size. To do so, it considers the maximum of net.ipv4.tcp_rmem[2] and net.core.rmem_max as the only possible upper-bounds. However, users with CAP_NET_ADMIN can use SO_RCVBUFFORCE to set the socket's receive buffer size to values larger than net.ipv4.tcp_rmem[2] and net.core.rmem_max. Thus, SO_RCVBUFFORCE is effectively ignored by tcp_select_initial_window(). To fix this, consider the maximum of net.ipv4.tcp_rmem[2], net.core.rmem_max and socket's initial buffer space. Fixes: b0573dea ("[NET]: Introduce SO_{SND,RCV}BUFFORCE socket options") Signed-off-by:
Soheil Hassas Yeganeh <soheil@google.com> Suggested-by:
Neal Cardwell <ncardwell@google.com> Acked-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
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Iosif Harutyunov authored
commit 714fb87e upstream. Install the UBI device object before we arm sysfs. Otherwise udev tries to read sysfs attributes before UBI is ready and udev rules will not match. Signed-off-by:
Iosif Harutyunov <iharutyunov@sonicwall.com> [rw: massaged commit message] Signed-off-by:
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Dan Carpenter authored
commit 55f1cf83 upstream. The pio_dev[] array has MAX_NR_PIO_DEVICES elements so the > should be >=. Fixes: 5f97f7f9 ('[PATCH] avr32 architecture') Signed-off-by:
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Alex Deucher authored
commit 3edc38a0 upstream. Some of the checks didn't handle frev 2 tables properly. Signed-off-by:
Alex Deucher <alexander.deucher@amd.com> Signed-off-by:
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David Howells authored
commit 20f06ed9 upstream. MIPS64 needs to use compat_sys_keyctl for 32-bit userspace rather than calling sys_keyctl. The latter will work in a lot of cases, thereby hiding the issue. Reported-by:
Ralf Baechle <ralf@linux-mips.org> Signed-off-by:
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Phil Turnbull authored
commit 955818cd upstream. ceph_llseek does not correctly return NXIO errors because the 'out' path always returns 'offset'. Fixes: 06222e49 ("fs: handle SEEK_HOLE/SEEK_DATA properly in all fs's that define their own llseek") Signed-off-by:
Phil Turnbull <phil.turnbull@oracle.com> Signed-off-by:
Yan, Zheng <zyan@redhat.com> [bwh: Backported to 3.2: - We don't use vfs_setpos(); instead set ret = -EINVAL or ret = offset directly - Adjust context] Signed-off-by:
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Dmitry Torokhov authored
commit 40974618 upstream. As explained in 1407814240-4275-1-git-send-email-decui@microsoft.com we have a hard load dependency between i8042 and atkbd which prevents keyboard from working on Gen2 Hyper-V VMs. > hyperv_keyboard invokes serio_interrupt(), which needs a valid serio > driver like atkbd.c. atkbd.c depends on libps2.c because it invokes > ps2_command(). libps2.c depends on i8042.c because it invokes > i8042_check_port_owner(). As a result, hyperv_keyboard actually > depends on i8042.c. > > For a Generation 2 Hyper-V VM (meaning no i8042 device emulated), if a > Linux VM (like Arch Linux) happens to configure CONFIG_SERIO_I8042=m > rather than =y, atkbd.ko can't load because i8042.ko can't load(due to > no i8042 device emulated) and finally hyperv_keyboard can't work and > the user can't input: https://bugs.archlinux.org/task/39820 > (Ubuntu/RHEL/SUSE aren't affected since they use CONFIG_SERIO_I8042=y) To break the dependency we move away from using i8042_check_port_owner() and instead allow serio port owner specify a mutex that clients should use to serialize PS/2 command stream. Reported-by:
Mark Laws <mdl@60hz.org> Tested-by:
Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by:
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phil.turnbull@oracle.com authored
commit 4ac36a4a upstream. If 'tunnel' is NULL we should return -EBADF but the 'end_put_sess' path unconditionally sets 'error' back to zero. Rework the error path so it more closely matches pppol2tp_sendmsg. Fixes: fd558d18 ("l2tp: Split pppol2tp patch into separate l2tp and ppp parts") Signed-off-by:
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Vegard Nossum authored
commit d3e6952c upstream. I ran into this: kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 2 PID: 2012 Comm: trinity-c3 Not tainted 4.7.0-rc7+ #19 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014 task: ffff8800b745f2c0 ti: ffff880111740000 task.ti: ffff880111740000 RIP: 0010:[<ffffffff82bbf066>] [<ffffffff82bbf066>] irttp_connect_request+0x36/0x710 RSP: 0018:ffff880111747bb8 EFLAGS: 00010286 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000069dd8358 RDX: 0000000000000009 RSI: 0000000000000027 RDI: 0000000000000048 RBP: ffff880111747c00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000069dd8358 R11: 1ffffffff0759723 R12: 0000000000000000 R13: ffff88011a7e4780 R14: 0000000000000027 R15: 0000000000000000 FS: 00007fc738404700(0000) GS:ffff88011af00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc737fdfb10 CR3: 0000000118087000 CR4: 00000000000006e0 Stack: 0000000000000200 ffff880111747bd8 ffffffff810ee611 ffff880119f1f220 ffff880119f1f4f8 ffff880119f1f4f0 ffff88011a7e4780 ffff880119f1f232 ffff880119f1f220 ffff880111747d58 ffffffff82bca542 0000000000000000 Call Trace: [<ffffffff82bca542>] irda_connect+0x562/0x1190 [<ffffffff825ae582>] SYSC_connect+0x202/0x2a0 [<ffffffff825b4489>] SyS_connect+0x9/0x10 [<ffffffff8100334c>] do_syscall_64+0x19c/0x410 [<ffffffff83295ca5>] entry_SYSCALL64_slow_path+0x25/0x25 Code: 41 89 ca 48 89 e5 41 57 41 56 41 55 41 54 41 89 d7 53 48 89 fb 48 83 c7 48 48 89 fa 41 89 f6 48 c1 ea 03 48 83 ec 20 4c 8b 65 10 <0f> b6 04 02 84 c0 74 08 84 c0 0f 8e 4c 04 00 00 80 7b 48 00 74 RIP [<ffffffff82bbf066>] irttp_connect_request+0x36/0x710 RSP <ffff880111747bb8> ---[ end trace 4cda2588bc055b30 ]--- The problem is that irda_open_tsap() can fail and leave self->tsap = NULL, and then irttp_connect_request() almost immediately dereferences it. Signed-off-by:
Vegard Nossum <vegard.nossum@oracle.com> Signed-off-by:
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Sebastian Reichel authored
commit b46211d6 upstream. Add missing sysconfig/sysstatus information to OMAP3 hwmod. The information has been checked against OMAP34xx and OMAP36xx TRM. Without this change DSI block is not reset during boot, which is required for working Nokia N950 display. Signed-off-by:
Sebastian Reichel <sre@kernel.org> Signed-off-by:
Tony Lindgren <tony@atomide.com> Signed-off-by:
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Jiri Slaby authored
commit 368301f2 upstream. With this command sequence: modprobe plip modprobe pps_parport rmmod pps_parport the partport_pps modules causes this crash: BUG: unable to handle kernel NULL pointer dereference at (null) IP: parport_detach+0x1d/0x60 [pps_parport] Oops: 0000 [#1] SMP ... Call Trace: parport_unregister_driver+0x65/0xc0 [parport] SyS_delete_module+0x187/0x210 The sequence that builds up to this is: 1) plip is loaded and takes the parport device for exclusive use: plip0: Parallel port at 0x378, using IRQ 7. 2) pps_parport then fails to grab the device: pps_parport: parallel port PPS client parport0: cannot grant exclusive access for device pps_parport pps_parport: couldn't register with parport0 3) rmmod of pps_parport is then killed because it tries to access pardev->name, but pardev (taken from port->cad) is NULL. So add a check for NULL in the test there too. Link: http://lkml.kernel.org/r/20160714115245.12651-1-jslaby@suse.czSigned-off-by:
Jiri Slaby <jslaby@suse.cz> Acked-by:
Rodolfo Giometti <giometti@enneenne.com> Signed-off-by:
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Benjamin Coddington authored
commit 149a4fdd upstream. NFS doesn't expect requests with wb_bytes set to zero and may make unexpected decisions about how to handle that request at the page IO layer. Skip request creation if we won't have any wb_bytes in the request. Signed-off-by:
Benjamin Coddington <bcodding@redhat.com> Signed-off-by:
Alexey Dobriyan <adobriyan@gmail.com> Reviewed-by:
Weston Andros Adamson <dros@primarydata.com> Signed-off-by:
Trond Myklebust <trond.myklebust@primarydata.com> [bwh: Backported to 3.2: adjust context] Signed-off-by:
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Dan Carpenter authored
commit 58a7e1c1 upstream. We obviously intended to enable IRQs again at the end. Fixes: 745aef5d ('MIPS: RM7000: Add support for tertiary cache') Signed-off-by:
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Dmitry Torokhov authored
commit 510cccb5 upstream. The size of individual keymap in drivers/tty/vt/keyboard.c is NR_KEYS, which is currently 256, whereas number of keys/buttons in input device (and therefor in key_down) is much larger - KEY_CNT - 768, and that can cause out-of-bound access when we do sym = U(key_maps[0][k]); with large 'k'. To fix it we should not attempt iterating beyond smaller of NR_KEYS and KEY_CNT. Also while at it let's switch to for_each_set_bit() instead of open-coding it. Reported-by:
Sasha Levin <sasha.levin@oracle.com> Reviewed-by:
Guenter Roeck <linux@roeck-us.net> Signed-off-by:
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Michael Walle authored
commit b53893aa upstream. According to the datasheet you should only write 1 to this bit. If it is not set, at least AIN3 will return bad values on newer silicon revisions. Fixes: d84ca5b3 ("hwmon: Add driver for ADT7411 voltage and temperature sensor") Signed-off-by:
Michael Walle <michael@walle.cc> Signed-off-by:
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Hector Palacios authored
commit 144f4c98 upstream. nand_do_write_ops() determines if it is writing a partial page with the formula: part_pagewr = (column || writelen < (mtd->writesize - 1)) When 'writelen' is exactly 1 byte less than the NAND page size the formula equates to zero, so the code doesn't process it as a partial write, although it should. As a consequence the function remains in the while(1) loop with 'writelen' becoming 0xffffffff and iterating endlessly. The bug may not be easy to reproduce in Linux since user space tools usually force the padding or round-up the write size to a page-size multiple. This was discovered in U-Boot where the issue can be reproduced by writing any size that is 1 byte less than a page-size multiple. For example, on a NAND with 2K page (0x800): => nand erase.part <partition> => nand write $loadaddr <partition> 7ff [Editor's note: the bug was added in commit 29072b96, but moved around in commit 66507c7b ("mtd: nand: Add support to use nand_base poi databuf as bounce buffer")] Fixes: 29072b96 ("[MTD] NAND: add subpage write support") Signed-off-by:
Hector Palacios <hector.palacios@digi.com> Acked-by:
Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by:
Brian Norris <computersforpeace@gmail.com> [bwh: Backported to 3.2: adjusted context as noted above] Signed-off-by:
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Florian Fainelli authored
commit f823a2aa upstream. wlc_phy_txpower_get_current() does a logical OR of power->flags, which presumes that power.flags was initiliazed earlier by the caller, unfortunately, this is not the case, so make sure we zero out the struct tx_power before calling into wlc_phy_txpower_get_current(). Reported-by: coverity (CID 146011) Fixes: 5b435de0 ("net: wireless: add brcm80211 drivers") Signed-off-by:
Florian Fainelli <f.fainelli@gmail.com> Acked-by:
Arend van Spriel <arend.vanspriel@broadcom.com> Signed-off-by:
Kalle Valo <kvalo@codeaurora.org> [bwh: Backported to 3.2: adjust filename] Signed-off-by:
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Andrey Pronin authored
commit 9754d45e upstream. Some chips incorrectly support partial reads from TPM_STS register at non-zero offsets. Read the entire 32-bits register instead of making two 8-bit reads to support such devices and reduce the number of bus transactions when obtaining the burstcount from TPM_STS. Fixes: 27084efe ("tpm: driver for next generation TPM chips") Signed-off-by:
Andrey Pronin <apronin@chromium.org> Reviewed-by:
Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by:
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Herbert Xu authored
commit 5f070e81 upstream. When there is more data to be processed, the current test in scatterwalk_done may prevent us from calling pagedone even when we should. In particular, if we're on an SG entry spanning multiple pages where the last page is not a full page, we will incorrectly skip calling pagedone on the second last page. This patch fixes this by adding a separate test for whether we've reached the end of a page. Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by:
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Amadeusz Sławiński authored
commit 23bc6ab0 upstream. When we retrieve imtu value from userspace we should use 16 bit pointer cast instead of 32 as it's defined that way in headers. Fixes setsockopt calls on big-endian platforms. Signed-off-by:
Amadeusz Sławiński <amadeusz.slawinski@tieto.com> Signed-off-by:
Marcel Holtmann <marcel@holtmann.org> Signed-off-by:
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Daniele Palmas authored
commit 3c0415fa upstream. This patch adds support for 0x1206 PID of Telit LE910. Since the interfaces positions are the same than the ones for 0x1043 PID of Telit LE922, telit_le922_blacklist_usbcfg3 is used. Signed-off-by:
Daniele Palmas <dnlplm@gmail.com> Signed-off-by:
Johan Hovold <johan@kernel.org> Signed-off-by:
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Dan Carpenter authored
commit 79ad07d4 upstream. There is a cut and paste issue here. The bug is that we are allocating more memory than necessary for msp_maps. We should be allocating enough space for a map_info struct (144 bytes) but we instead allocate enough for an mtd_info struct (1840 bytes). It's a small waste. The other part of this is not harmful but when we allocated msp_flash then we allocated enough space fro a map_info pointer instead of an mtd_info pointer. But since pointers are the same size it works out fine. Anyway, I decided to clean up all three allocations a bit to make them a bit more consistent and clear. Fixes: 68aa0fa8 ('[MTD] PMC MSP71xx flash/rootfs mappings') Signed-off-by:
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Vegard Nossum authored
commit c65d5c6c upstream. If we encounter a filesystem error during orphan cleanup, we should stop. Otherwise, we may end up in an infinite loop where the same inode is processed again and again. EXT4-fs (loop0): warning: checktime reached, running e2fsck is recommended EXT4-fs error (device loop0): ext4_mb_generate_buddy:758: group 2, block bitmap and bg descriptor inconsistent: 6117 vs 0 free clusters Aborting journal on device loop0-8. EXT4-fs (loop0): Remounting filesystem read-only EXT4-fs error (device loop0) in ext4_free_blocks:4895: Journal has aborted EXT4-fs error (device loop0) in ext4_do_update_inode:4893: Journal has aborted EXT4-fs error (device loop0) in ext4_do_update_inode:4893: Journal has aborted EXT4-fs error (device loop0) in ext4_ext_remove_space:3068: IO failure EXT4-fs error (device loop0) in ext4_ext_truncate:4667: Journal has aborted EXT4-fs error (device loop0) in ext4_orphan_del:2927: Journal has aborted EXT4-fs error (device loop0) in ext4_do_update_inode:4893: Journal has aborted EXT4-fs (loop0): Inode 16 (00000000618192a0): orphan list check failed! [...] EXT4-fs (loop0): Inode 16 (0000000061819748): orphan list check failed! [...] EXT4-fs (loop0): Inode 16 (0000000061819bf0): orphan list check failed! [...] See-also: c9eb13a9 ("ext4: fix hang when processing corrupted orphaned inode list") Cc: Jan Kara <jack@suse.cz> Signed-off-by:
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Vegard Nossum authored
commit 554a5ccc upstream. If we hit this error when mounted with errors=continue or errors=remount-ro: EXT4-fs error (device loop0): ext4_mb_mark_diskspace_used:2940: comm ext4.exe: Allocating blocks 5090-6081 which overlap fs metadata then ext4_mb_new_blocks() will call ext4_mb_release_context() and try to continue. However, ext4_mb_release_context() is the wrong thing to call here since we are still actually using the allocation context. Instead, just error out. We could retry the allocation, but there is a possibility of getting stuck in an infinite loop instead, so this seems safer. [ Fixed up so we don't return EAGAIN to userspace. --tytso ] Fixes: 8556e8f3 ("ext4: Don't allow new groups to be added during block allocation") Signed-off-by:
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Jim Mattson authored
commit 2f1fe811 upstream. When freeing the nested resources of a vcpu, there is an assumption that the vcpu's vmcs01 is the current VMCS on the CPU that executes nested_release_vmcs12(). If this assumption is violated, the vcpu's vmcs01 may be made active on multiple CPUs at the same time, in violation of Intel's specification. Moreover, since the vcpu's vmcs01 is not VMCLEARed on every CPU on which it is active, it can linger in a CPU's VMCS cache after it has been freed and potentially repurposed. Subsequent eviction from the CPU's VMCS cache on a capacity miss can result in memory corruption. It is not sufficient for vmx_free_vcpu() to call vmx_load_vmcs01(). If the vcpu in question was last loaded on a different CPU, it must be migrated to the current CPU before calling vmx_load_vmcs01(). Signed-off-by:
Jim Mattson <jmattson@google.com> Signed-off-by:
Paolo Bonzini <pbonzini@redhat.com> [bwh: Backported to 3.2: vcpu_load() returns void] Signed-off-by:
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Paolo Bonzini authored
commit 4fa7734c upstream. free_nested needs the loaded_vmcs to be valid if it is a vmcs02, in order to detach it from the shadow vmcs. However, this is not available anymore after commit 26a865f4 (KVM: VMX: fix use after free of vmx->loaded_vmcs, 2014-01-03). Revert that patch, and fix its problem by forcing a vmcs01 as the active VMCS before freeing all the nested VMX state. Reported-by:
Wanpeng Li <wanpeng.li@linux.intel.com> Tested-by:
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Florian Fainelli authored
commit 386512d1 upstream. In case any operation fails before we can successfully go the point where we would register a MDIO bus, we would be going to an error label which involves unregistering then freeing this yet to be created MDIO bus. Update all error paths to go to label free which is the only one valid until either the clock is enabled, or the MDIO bus is allocated and registered. This fixes kernel oops observed while trying to dereference the MDIO bus structure which is not yet allocated. Fixes: a1702857 ("net: Add support for the OpenCores 10/100 Mbps Ethernet MAC.") Signed-off-by:
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Dmitry Tunin authored
commit 12d86896 upstream. T: Bus=01 Lev=01 Prnt=01 Port=07 Cnt=05 Dev#= 5 Spd=12 MxCh= 0 D: Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=13d3 ProdID=3490 Rev=00.01 C: #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA I: If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb I: If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb BugLink: https://bugs.launchpad.net/bugs/1600623Signed-off-by:
Dmitry Tunin <hanipouspilot@gmail.com> Signed-off-by:
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Lauro Costa authored
commit 72f9f8b5 upstream. Add hw id to ath3k usb device list and btusb blacklist T: Bus=01 Lev=01 Prnt=01 Port=08 Cnt=02 Dev#= 4 Spd=12 MxCh= 0 D: Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=13d3 ProdID=3487 Rev=00.02 C: #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA I: If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb I: If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb Requires these firmwares: ar3k/AthrBT_0x11020100.dfu and ar3k/ramps_0x11020100_40.dfu Firmwares are available in linux-firmware. Device found in a laptop ASUS model N552VW. It's an Atheros AR9462 chip. Signed-off-by:
Lauro Costa <lauro@polilinux.com.br> Signed-off-by:
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Chuck Lever authored
commit a4e187d8 upstream. Before commit 778be232 ("NFS do not find client in NFSv4 pg_authenticate"), the Linux callback server replied with RPC_AUTH_ERROR / RPC_AUTH_BADCRED, instead of dropping the CB request. Let's restore that behavior so the server has a chance to do something useful about it, and provide a warning that helps admins correct the problem. Fixes: 778be232 ("NFS do not find client in NFSv4 ...") Signed-off-by:
Chuck Lever <chuck.lever@oracle.com> Tested-by:
Steve Wise <swise@opengridcomputing.com> Signed-off-by:
Anna Schumaker <Anna.Schumaker@Netapp.com> Signed-off-by:
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Chuck Lever authored
commit 0533b130 upstream. If an RPC program does not set vs_dispatch and pc_func() returns rpc_drop_reply, the server sends a reply anyway containing a single word containing the value RPC_DROP_REPLY (in network byte-order, of course). This is a nonsense RPC message. Fixes: 9e701c61 ("svcrpc: simpler request dropping") Signed-off-by:
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Lukas Wunner authored
commit abb2bafd upstream. The EFI firmware on Macs contains a full-fledged network stack for downloading OS X images from osrecovery.apple.com. Unfortunately on Macs introduced 2011 and 2012, EFI brings up the Broadcom 4331 wireless card on every boot and leaves it enabled even after ExitBootServices has been called. The card continues to assert its IRQ line, causing spurious interrupts if the IRQ is shared. It also corrupts memory by DMAing received packets, allowing for remote code execution over the air. This only stops when a driver is loaded for the wireless card, which may be never if the driver is not installed or blacklisted. The issue seems to be constrained to the Broadcom 4331. Chris Milsted has verified that the newer Broadcom 4360 built into the MacBookPro11,3 (2013/2014) does not exhibit this behaviour. The chances that Apple will ever supply a firmware fix for the older machines appear to be zero. The solution is to reset the card on boot by writing to a reset bit in its mmio space. This must be done as an early quirk and not as a plain vanilla PCI quirk to successfully combat memory corruption by DMAed packets: Matthew Garrett found out in 2012 that the packets are written to EfiBootServicesData memory (http://mjg59.dreamwidth.org/11235.html). This type of memory is made available to the page allocator by efi_free_boot_services(). Plain vanilla PCI quirks run much later, in subsys initcall level. In-between a time window would be open for memory corruption. Random crashes occurring in this time window and attributed to DMAed packets have indeed been observed in the wild by Chris Bainbridge. When Matthew Garrett analyzed the memory corruption issue in 2012, he sought to fix it with a grub quirk which transitions the card to D3hot: http://git.savannah.gnu.org/cgit/grub.git/commit/?id=9d34bb85da56 This approach does not help users with other bootloaders and while it may prevent DMAed packets, it does not cure the spurious interrupts emanating from the card. Unfortunately the card's mmio space is inaccessible in D3hot, so to reset it, we have to undo the effect of Matthew's grub patch and transition the card back to D0. Note that the quirk takes a few shortcuts to reduce the amount of code: The size of BAR 0 and the location of the PM capability is identical on all affected machines and therefore hardcoded. Only the address of BAR 0 differs between models. Also, it is assumed that the BCMA core currently mapped is the 802.11 core. The EFI driver seems to always take care of this. Michael Büsch, Bjorn Helgaas and Matt Fleming contributed feedback towards finding the best solution to this problem. The following should be a comprehensive list of affected models: iMac13,1 2012 21.5" [Root Port 00:1c.3 = 8086:1e16] iMac13,2 2012 27" [Root Port 00:1c.3 = 8086:1e16] Macmini5,1 2011 i5 2.3 GHz [Root Port 00:1c.1 = 8086:1c12] Macmini5,2 2011 i5 2.5 GHz [Root Port 00:1c.1 = 8086:1c12] Macmini5,3 2011 i7 2.0 GHz [Root Port 00:1c.1 = 8086:1c12] Macmini6,1 2012 i5 2.5 GHz [Root Port 00:1c.1 = 8086:1e12] Macmini6,2 2012 i7 2.3 GHz [Root Port 00:1c.1 = 8086:1e12] MacBookPro8,1 2011 13" [Root Port 00:1c.1 = 8086:1c12] MacBookPro8,2 2011 15" [Root Port 00:1c.1 = 8086:1c12] MacBookPro8,3 2011 17" [Root Port 00:1c.1 = 8086:1c12] MacBookPro9,1 2012 15" [Root Port 00:1c.1 = 8086:1e12] MacBookPro9,2 2012 13" [Root Port 00:1c.1 = 8086:1e12] MacBookPro10,1 2012 15" [Root Port 00:1c.1 = 8086:1e12] MacBookPro10,2 2012 13" [Root Port 00:1c.1 = 8086:1e12] For posterity, spurious interrupts caused by the Broadcom 4331 wireless card resulted in splats like this (stacktrace omitted): irq 17: nobody cared (try booting with the "irqpoll" option) handlers: [<ffffffff81374370>] pcie_isr [<ffffffffc0704550>] sdhci_irq [sdhci] threaded [<ffffffffc07013c0>] sdhci_thread_irq [sdhci] [<ffffffffc0a0b960>] azx_interrupt [snd_hda_codec] Disabling IRQ #17 Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=79301 Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=111781 Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=728916 Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=895951#c16 Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1009819 Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1098621 Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1149632#c5 Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1279130 Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1332732 Tested-by: Konstantin Simanov <k.simanov@stlk.ru> # [MacBookPro8,1] Tested-by: Lukas Wunner <lukas@wunner.de> # [MacBookPro9,1] Tested-by: Bryan Paradis <bryan.paradis@gmail.com> # [MacBookPro9,2] Tested-by: Andrew Worsley <amworsley@gmail.com> # [MacBookPro10,1] Tested-by: Chris Bainbridge <chris.bainbridge@gmail.com> # [MacBookPro10,2] Signed-off-by:
Lukas Wunner <lukas@wunner.de> Acked-by:
Rafał Miłecki <zajec5@gmail.com> Acked-by:
Matt Fleming <matt@codeblueprint.co.uk> Cc: Andy Lutomirski <luto@kernel.org> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Chris Milsted <cmilsted@redhat.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Matthew Garrett <mjg59@srcf.ucam.org> Cc: Michael Buesch <m@bues.ch> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Yinghai Lu <yinghai@kernel.org> Cc: b43-dev@lists.infradead.org Cc: linux-pci@vger.kernel.org Cc: linux-wireless@vger.kernel.org Link: http://lkml.kernel.org/r/48d0972ac82a53d460e5fce77a07b2560db95203.1465690253.git.lukas@wunner.de [ Did minor readability edits. ] Signed-off-by:
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Lukas Wunner authored
commit 850c3210 upstream. We used to scan secondary buses until the following commit that was applied in 2009: 8659c406 ("x86: only scan the root bus in early PCI quirks") which commit constrained early quirks to the root bus only. Its motivation was to prevent application of the nvidia_bugs quirk on secondary buses. We're about to add a quirk to reset the Broadcom 4331 wireless card on 2011/2012 Macs, which is located on a secondary bus behind a PCIe root port. To facilitate that, reintroduce scanning of secondary buses. The commit message of 8659c406 notes that scanning only the root bus "saves quite some unnecessary scanning work". The algorithm used prior to 8659c406 was particularly time consuming because it scanned buses 0 to 31 brute force. To avoid lengthening boot time, employ a recursive strategy which only scans buses that are actually reachable from the root bus. Yinghai Lu pointed out that the secondary bus number read from a bridge's config space may be invalid, in particular a value of 0 would cause an infinite loop. The PCI core goes beyond that and recurses to a child bus only if its bus number is greater than the parent bus number (see pci_scan_bridge()). Since the root bus is numbered 0, this implies that secondary buses may not be 0. Do the same on early scanning. If this algorithm is found to significantly impact boot time or cause infinite loops on broken hardware, it would be possible to limit its recursion depth: The Broadcom 4331 quirk applies at depth 1, all others at depth 0, so the bus need not be scanned deeper than that for now. An alternative approach would be to revert to scanning only the root bus, and apply the Broadcom 4331 quirk to the root ports 8086:1c12, 8086:1e12 and 8086:1e16. Apple always positioned the card behind either of these three ports. The quirk would then check presence of the card in slot 0 below the root port and do its deed. Signed-off-by:
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