user/sven/linux.git/lib, branch v4.2.6

fault-inject: fix inverted interval/probability values in printk

2015-11-09T22:37:33Z

commit bb387002693ed28b2bb0408c5dec65521b71e5f1 upstream. interval displays the probability and vice versa. Fixes: 6adc4a22f20bb ("fault-inject: add ratelimit option") Acked-by: Akinobu Mita Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman

lib/iommu-common.c: do not try to deref a null iommu->lazy_flush() pointer when n < pool->hint

2015-10-22T21:49:20Z

commit d046b770c9fc36ccb19c27afdb8322220108cbc7 upstream. The check for invoking iommu->lazy_flush() from iommu_tbl_range_alloc() has to be refactored so that we only call ->lazy_flush() if it is non-null. I had a sparc kernel that was crashing when I was trying to process some very large perf.data files- the crash happens when the scsi driver calls into dma_4v_map_sg and thus the iommu_tbl_range_alloc(). Signed-off-by: Sowmini Varadhan Cc: Benjamin Herrenschmidt Cc: Guenter Roeck Cc: David S. Miller Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman

lib/decompressors: use real out buf size for gunzip with kernel

2015-09-29T17:33:37Z

commit 2d3862d26e67a59340ba1cf1748196c76c5787de upstream. When loading x86 64bit kernel above 4GiB with patched grub2, got kernel gunzip error. | early console in decompress_kernel | decompress_kernel: | input: [0x807f2143b4-0x807ff61aee] | output: [0x807cc00000-0x807f3ea29b] 0x027ea29c: output_len | boot via startup_64 | KASLR using RDTSC... | new output: [0x46fe000000-0x470138cfff] 0x0338d000: output_run_size | decompress: [0x46fe000000-0x47007ea29b] <=== [0x807f2143b4-0x807ff61aee] | | Decompressing Linux... gz... | | uncompression error | | -- System halted the new buffer is at 0x46fe000000ULL, decompressor_gzip is using 0xffffffb901ffffff as out_len. gunzip in lib/zlib_inflate/inflate.c cap that len to 0x01ffffff and decompress fails later. We could hit this problem with crashkernel booting that uses kexec loading kernel above 4GiB. We have decompress_* support: 1. inbuf[]/outbuf[] for kernel preboot. 2. inbuf[]/flush() for initramfs 3. fill()/flush() for initrd. This bug only affect kernel preboot path that use outbuf[]. Add __decompress and take real out_buf_len for gunzip instead of guessing wrong buf size. Fixes: 1431574a1c4 (lib/decompressors: fix "no limit" output buffer length) Signed-off-by: Yinghai Lu Cc: Alexandre Courbot Cc: Jon Medhurst Cc: Stephen Warren Cc: "H. Peter Anvin" Cc: Thomas Gleixner Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman

lib/iommu-common.c: do not use 0xffffffffffffffffl for computing align_mask

2015-08-07T01:39:41Z

Using a 64 bit constant generates "warning: integer constant is too large for 'long' type" on 32 bit platforms. Instead use ~0ul and BITS_PER_LONG. Detected by Andrew Morton on ARMD. Signed-off-by: Sowmini Varadhan Cc: Benjamin Herrenschmidt Cc: David S. Miller Cc: Guenter Roeck Cc: Rasmus Villemoes Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

lib/decompress: set the compressor name to NULL on error

2015-07-17T23:39:54Z

Without this we end up using the previous name of the compressor in the loop in unpack_rootfs. For example we get errors like "compression method gzip not configured" even when we have CONFIG_DECOMPRESS_GZIP enabled. Signed-off-by: Aneesh Kumar K.V Cc: "H. Peter Anvin" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

dma-debug: skip debug_dma_assert_idle() when disabled

2015-07-17T23:39:53Z

If dma-debug is disabled due to a memory error, DMA unmaps do not affect the dma_active_cacheline radix tree anymore, and debug_dma_assert_idle() can print false warnings. Disable debug_dma_assert_idle() when dma_debug_disabled() is true. Signed-off-by: Haggai Eran Fixes: 0abdd7a81b7e ("dma-debug: introduce debug_dma_assert_idle()") Cc: Dan Williams Cc: Joerg Roedel Cc: Vinod Koul Cc: Russell King Cc: James Bottomley Cc: Florian Fainelli Cc: Sebastian Ott Cc: Jiri Kosina Cc: Horia Geanta Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

hexdump: fix for non-aligned buffers

2015-07-17T23:39:53Z

A hexdump with a buf not aligned to the groupsize causes non-naturally-aligned memory accesses. This was causing a kernel panic on the processor BlackFin BF527, when such an unaligned buffer was fed by the function ubifs_scanned_corruption in fs/ubifs/scan.c . To fix this, change accesses to the contents of the buffer so they go through get_unaligned(). This change should be harmless to unaligned- access-capable architectures, and any performance hit should be anyway dwarfed by the snprintf() processing time. Signed-off-by: Horacio Mijail Antón Quiles Cc: Andy Shevchenko Cc: David Howells Cc: Vivek Goyal Cc: Joe Perches Acked-by: Geert Uytterhoeven Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

include, lib: add __printf attributes to several function prototypes

2015-07-17T23:39:53Z

Using __printf attributes helps to detect several format string issues at compile time (even though -Wformat-security is currently disabled in Makefile). For example it can detect when formatting a pointer as a number, like the issue fixed in commit a3fa71c40f18 ("wl18xx: show rx_frames_per_rates as an array as it really is"), or when the arguments do not match the format string, c.f. for example commit 5ce1aca81435 ("reiserfs: fix __RASSERT format string"). To prevent similar bugs in the future, add a __printf attribute to every function prototype which needs one in include/linux/ and lib/. These functions were mostly found by using gcc's -Wsuggest-attribute=format flag. Signed-off-by: Nicolas Iooss Cc: Greg Kroah-Hartman Cc: Felipe Balbi Cc: Joel Becker Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2015-07-13T18:18:25Z

Pull networking fixes from David Miller: 1) Missing list head init in bluetooth hidp session creation, from Tedd Ho-Jeong An. 2) Don't leak SKB in bridge netfilter error paths, from Florian Westphal. 3) ipv6 netdevice private leak in netfilter bridging, fixed by Julien Grall. 4) Fix regression in IP over hamradio bpq encapsulation, from Ralf Baechle. 5) Fix race between rhashtable resize events and table walks, from Phil Sutter. 6) Missing validation of IFLA_VF_INFO netlink attributes, fix from Daniel Borkmann. 7) Missing security layer socket state initialization in tipc code, from Stephen Smalley. 8) Fix shared IRQ handling in boomerang 3c59x interrupt handler, from Denys Vlasenko. 9) Missing minor_idr destroy on module unload on macvtap driver, from Johannes Thumshirn. 10) Various pktgen kernel thread races, from Oleg Nesterov. 11) Fix races that can cause packets to be processed in the backlog even after a device attached to that SKB has been fully unregistered. From Julian Anastasov. 12) bcmgenet driver doesn't account packet drops vs. errors properly, fix from Petri Gynther. 13) Array index validation and off by one fix in DSA layer from Florian Fainelli * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (66 commits) can: replace timestamp as unique skb attribute ARM: dts: dra7x-evm: Prevent glitch on DCAN1 pinmux can: c_can: Fix default pinmux glitch at init can: rcar_can: unify error messages can: rcar_can: print request_irq() error code can: rcar_can: fix typo in error message can: rcar_can: print signed IRQ # can: rcar_can: fix IRQ check net: dsa: Fix off-by-one in switch address parsing net: dsa: Test array index before use net: switchdev: don't abort unsupported operations net: bcmgenet: fix accounting of packet drops vs errors cdc_ncm: update specs URL Doc: z8530book: Fix typo in API-z8530-sync-txdma-open.html net: inet_diag: always export IPV6_V6ONLY sockopt for listening sockets bridge: mdb: allow the user to delete mdb entry if there's a querier net: call rcu_read_lock early in process_backlog net: do not process device backlog during unregistration bridge: fix potential crash in __netdev_pick_tx() net: axienet: Fix devm_ioremap_resource return value check ...

rhashtable: fix for resize events during table walk

2015-07-08T21:53:49Z

If rhashtable_walk_next detects a resize operation in progress, it jumps to the new table and continues walking that one. But it misses to drop the reference to it's current item, leading it to continue traversing the new table's bucket in which the current item is sorted into, and after reaching that bucket's end continues traversing the new table's second bucket instead of the first one, thereby potentially missing items. This fixes the rhashtable runtime test for me. Bug probably introduced by Herbert Xu's patch eddee5ba ("rhashtable: Fix walker behaviour during rehash") although not explicitly tested. Fixes: eddee5ba ("rhashtable: Fix walker behaviour during rehash") Signed-off-by: Phil Sutter Acked-by: Herbert Xu Signed-off-by: David S. Miller