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2018-12-31Merge branch 'sched-urgent-for-linus' of ↵Linus Torvalds1-34/+9
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler fix from Ingo Molnar: "This is a revert for a lockup in cgroups-intense workloads - the real fixes will come later" * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/fair: Fix infinite loop in update_blocked_averages() by reverting a9e7f6544b9c
2018-12-31Merge tag 'dax-fix-4.21' of ↵Linus Torvalds1-9/+7
git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm Pull dax fix from Dan Williams: "Clean up unnecessary usage of prepare_to_wait_exclusive(). While I feel a bit silly sending a single-commit pull-request there is nothing else queued up for dax this cycle. This change has shipped in -next for multiple releases" * tag 'dax-fix-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: dax: Use non-exclusive wait in wait_entry_unlocked()
2018-12-31Merge tag 'f2fs-for-4.21' of ↵Linus Torvalds21-366/+542
git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs Pull f2fs updates from Jaegeuk Kim: "In this round, we've focused on bug fixes since Pixel devices have been shipping with f2fs. Some of them were related to hardware encryption support which are actually not an issue in mainline, but would be better to merge them in order to avoid potential bugs. Enhancements: - do GC sub-sections when the section is large - add a flag in ioctl(SHUTDOWN) to trigger fsck for QA - use kvmalloc() in order to give another chance to avoid ENOMEM Bug fixes: - fix accessing memory boundaries in a malformed iamge - GC gives stale unencrypted block - GC counts in large sections - detect idle time more precisely - block allocation of DIO writes - race conditions between write_begin and write_checkpoint - allow GCs for node segments via ioctl() There are various clean-ups and minor bug fixes as well" * tag 'f2fs-for-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (43 commits) f2fs: sanity check of xattr entry size f2fs: fix use-after-free issue when accessing sbi->stat_info f2fs: check PageWriteback flag for ordered case f2fs: fix validation of the block count in sanity_check_raw_super f2fs: fix missing unlock(sbi->gc_mutex) f2fs: fix to dirty inode synchronously f2fs: clean up structure extent_node f2fs: fix block address for __check_sit_bitmap f2fs: fix sbi->extent_list corruption issue f2fs: clean up checkpoint flow f2fs: flush stale issued discard candidates f2fs: correct wrong spelling, issing_* f2fs: use kvmalloc, if kmalloc is failed f2fs: remove redundant comment of unused wio_mutex f2fs: fix to reorder set_page_dirty and wait_on_page_writeback f2fs: clear PG_writeback if IPU failed f2fs: add an ioctl() to explicitly trigger fsck later f2fs: avoid frequent costly fsck triggers f2fs: fix m_may_create to make OPU DIO write correctly f2fs: fix to update new block address correctly for OPU ...
2018-12-31block/swim3: Fix regression on PowerBook G3Finn Thain1-4/+3
As of v4.20, the swim3 driver crashes when loaded on a PowerBook G3 (Wallstreet). MacIO PCI driver attached to Gatwick chipset MacIO PCI driver attached to Heathrow chipset swim3 0.00015000:floppy: [fd0] SWIM3 floppy controller in media bay 0.00013020:ch-a: ttyS0 at MMIO 0xf3013020 (irq = 16, base_baud = 230400) is a Z85c30 ESCC - Serial port 0.00013000:ch-b: ttyS1 at MMIO 0xf3013000 (irq = 17, base_baud = 230400) is a Z85c30 ESCC - Infrared port macio: fixed media-bay irq on gatwick macio: fixed left floppy irqs swim3 1.00015000:floppy: [fd1] Couldn't request interrupt Unable to handle kernel paging request for data at address 0x00000024 Faulting instruction address: 0xc02652f8 Oops: Kernel access of bad area, sig: 11 [#1] BE SMP NR_CPUS=2 PowerMac Modules linked in: CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.20.0 #2 NIP: c02652f8 LR: c026915c CTR: c0276d1c REGS: df43ba10 TRAP: 0300 Not tainted (4.20.0) MSR: 00009032 <EE,ME,IR,DR,RI> CR: 28228288 XER: 00000100 DAR: 00000024 DSISR: 40000000 GPR00: c026915c df43bac0 df439060 c0731524 df494700 00000000 c06e1c08 00000001 GPR08: 00000001 00000000 df5ff220 00001032 28228282 00000000 c0004ca4 00000000 GPR16: 00000000 00000000 00000000 c073144c dfffe064 c0731524 00000120 c0586108 GPR24: c073132c c073143c c073143c 00000000 c0731524 df67cd70 df494700 00000001 NIP [c02652f8] blk_mq_free_rqs+0x28/0xf8 LR [c026915c] blk_mq_sched_tags_teardown+0x58/0x84 Call Trace: [df43bac0] [c0045f50] flush_workqueue_prep_pwqs+0x178/0x1c4 (unreliable) [df43bae0] [c026915c] blk_mq_sched_tags_teardown+0x58/0x84 [df43bb00] [c02697f0] blk_mq_exit_sched+0x9c/0xb8 [df43bb20] [c0252794] elevator_exit+0x84/0xa4 [df43bb40] [c0256538] blk_exit_queue+0x30/0x50 [df43bb50] [c0256640] blk_cleanup_queue+0xe8/0x184 [df43bb70] [c034732c] swim3_attach+0x330/0x5f0 [df43bbb0] [c034fb24] macio_device_probe+0x58/0xec [df43bbd0] [c032ba88] really_probe+0x1e4/0x2f4 [df43bc00] [c032bd28] driver_probe_device+0x64/0x204 [df43bc20] [c0329ac4] bus_for_each_drv+0x60/0xac [df43bc50] [c032b824] __device_attach+0xe8/0x160 [df43bc80] [c032ab38] bus_probe_device+0xa0/0xbc [df43bca0] [c0327338] device_add+0x3d8/0x630 [df43bcf0] [c0350848] macio_add_one_device+0x444/0x48c [df43bd50] [c03509f8] macio_pci_add_devices+0x168/0x1bc [df43bd90] [c03500ec] macio_pci_probe+0xc0/0x10c [df43bda0] [c02ad884] pci_device_probe+0xd4/0x184 [df43bdd0] [c032ba88] really_probe+0x1e4/0x2f4 [df43be00] [c032bd28] driver_probe_device+0x64/0x204 [df43be20] [c032bfcc] __driver_attach+0x104/0x108 [df43be40] [c0329a00] bus_for_each_dev+0x64/0xb4 [df43be70] [c032add8] bus_add_driver+0x154/0x238 [df43be90] [c032ca24] driver_register+0x84/0x148 [df43bea0] [c0004aa0] do_one_initcall+0x40/0x188 [df43bf00] [c0690100] kernel_init_freeable+0x138/0x1d4 [df43bf30] [c0004cbc] kernel_init+0x18/0x10c [df43bf40] [c00121e4] ret_from_kernel_thread+0x14/0x1c Instruction dump: 5484d97e 4bfff4f4 9421ffe0 7c0802a6 bf410008 7c9e2378 90010024 8124005c 2f890000 419e0078 81230004 7c7c1b78 <81290024> 2f890000 419e0064 81440000 ---[ end trace 12025ab921a9784c ]--- Reverting commit 8ccb8cb1892b ("swim3: convert to blk-mq") resolves the problem. That commit added a struct blk_mq_tag_set to struct floppy_state and initialized it with a blk_mq_init_sq_queue() call. Unfortunately, there is a memset() in swim3_add_device() that subsequently clears the floppy_state struct. That means fs->tag_set->ops is a NULL pointer, and it gets dereferenced by blk_mq_free_rqs() which gets called in the request_irq() error path. Move the memset() to fix this bug. BTW, the request_irq() failure for the left mediabay floppy (fd1) is not a regression. I don't know why it happens. The right media bay floppy (fd0) works fine however. Reported-and-tested-by: Stan Johnson <[email protected]> Fixes: 8ccb8cb1892b ("swim3: convert to blk-mq") Cc: [email protected] Signed-off-by: Finn Thain <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2018-12-31block/swim3: Fix -EBUSY error when re-opening device after unmountFinn Thain1-1/+5
When the block device is opened with FMODE_EXCL, ref_count is set to -1. This value doesn't get reset when the device is closed which means the device cannot be opened again. Fix this by checking for refcount <= 0 in the release method. Reported-and-tested-by: Stan Johnson <[email protected]> Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Cc: [email protected] Signed-off-by: Finn Thain <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2018-12-31block/swim3: Remove dead return statementFinn Thain1-1/+0
Cc: [email protected] Signed-off-by: Finn Thain <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2018-12-31block/amiflop: Don't log error message on invalid ioctlFinn Thain1-2/+0
Cc: [email protected] Signed-off-by: Finn Thain <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2018-12-31nfs: fixed broken compilation in nfs_callback_up_net()Vasily Averin2-1/+10
Patch fixes compilation error in nfs_callback_up_net() serv->sv_bc_enabled is defined under enabled CONFIG_SUNRPC_BACKCHANNEL, however nfs_callback_up_net() can access it even if this config option was not set. Fixes: a289ce5311f4 (sunrpc: replace svc_serv->sv_bc_xprt by boolean flag) Reported-by: kbuild test robot <[email protected]> Signed-off-by: Vasily Averin <[email protected]> Signed-off-by: J. Bruce Fields <[email protected]>
2018-12-31csky: Add EM_CSKY_OLD 39Guo Ren1-1/+3
C-SKY historically used 39, the same value as MCORE, from which the architecture was derived. C-SKY binutils support both EM_CSKY and EM_CSKY_OLD, confirmed by binutils:include/elf/common.h Signed-off-by: Guo Ren <[email protected]>
2018-12-31clocksource/drivers/c-sky: fixup ftrace call-graph panicGuo Ren1-1/+1
We must add notrace on sched_clock_read, because it's called by ftrace_graph_caller. Signed-off-by: Guo Ren <[email protected]>
2018-12-31csky: ftrace call graph supported.Guo Ren4-20/+151
With csky-gcc -pg -mbacktrace, ftrace call graph supported. Signed-off-by: Guo Ren <[email protected]>
2018-12-31MIPS: Fix a R10000_LLSC_WAR logic in atomic.hHuacai Chen1-1/+1
Commit 4936084c2ee2 ("MIPS: Cleanup R10000_LLSC_WAR logic in atomic.h") introduce a mistake in atomic64_fetch_##op##_relaxed(), because it forget to delete R10000_LLSC_WAR in the if-condition. So fix it. Fixes: 4936084c2ee2 ("MIPS: Cleanup R10000_LLSC_WAR logic in atomic.h") Signed-off-by: Huacai Chen <[email protected]> Signed-off-by: Paul Burton <[email protected]> Cc: Joshua Kinard <[email protected]> Cc: Ralf Baechle <[email protected]> Cc: Steven J . Hill <[email protected]> Cc: Fuxin Zhang <[email protected]> Cc: Zhangjin Wu <[email protected]> Cc: [email protected] Cc: [email protected] # 4.19+
2018-12-31csky: basic ftrace supportedGuo Ren6-0/+64
When gcc with -pg, it'll add _mcount stub in every function. We need implement the _mcount in kernel and ftrace depends on stackstrace. To do: call-graph, dynamic ftrace Signed-off-by: Guo Ren <[email protected]>
2018-12-31csky: remove unused members in processor.hGuo Ren7-40/+0
Cleanup struct cpuinfo_csky and struct thread_struct, remove all esp0 related code. We could get pt_regs from sp and backtrace could use fp in switch_stack. Signed-off-by: Guo Ren <[email protected]>
2018-12-31csky: optimize kernel panic print.Guo Ren3-56/+41
Use STACKTRACE to optimize panic print more pretty and align registers printing. Signed-off-by: Guo Ren <[email protected]>
2018-12-31MIPS: BCM63XX: drop unused and broken DSP platform deviceJonas Gorski5-98/+3
Trying to register the DSP platform device results in a null pointer access: [ 0.124184] CPU 0 Unable to handle kernel paging request at virtual address 00000000, epc == 804e305c, ra == 804e6f20 [ 0.135208] Oops[#1]: [ 0.137514] CPU: 0 PID: 1 Comm: swapper Not tainted 4.14.87 ... [ 0.197117] epc : 804e305c bcm63xx_dsp_register+0x80/0xa4 [ 0.202838] ra : 804e6f20 board_register_devices+0x258/0x390 ... This happens because it tries to copy the passed platform data over the platform_device's unpopulated platform_data. Since this code has been broken since its submission, no driver was ever submitted for it, and apparently nobody was using it, just remove it instead of trying to fix it. Fixes: e7300d04bd08 ("MIPS: BCM63xx: Add support for the Broadcom BCM63xx family of SOCs.") Signed-off-by: Jonas Gorski <[email protected]> Signed-off-by: Paul Burton <[email protected]> Acked-by: Florian Fainelli <[email protected]> Cc: [email protected] Cc: Ralf Baechle <[email protected]> Cc: James Hogan <[email protected]>
2018-12-31csky: stacktrace supported.Guo Ren6-12/+86
The gcc option "-mbacktrace" will push fp(r8),lr into stack and we could unwind the stack with: fp = *fp lr = (unsigned int *)fp[1] Signed-off-by: Guo Ren <[email protected]>
2018-12-31csky: CPU-hotplug supported for SMPGuo Ren3-15/+69
This is a simple implement of CPU-hotplug for power saving. CPU use wait instruction to enter power saving mode and waiting for IPI wakeup signal. Signed-off-by: Guo Ren <[email protected]>
2018-12-31clocksource/drivers/c-sky: fixup qemu fail to bootup sometimes.Guo Ren1-2/+2
Timer startup must after timer_irq_enable. For qemu, timer tick irq hanppens but irq not enable, so it will cause qemu boot failed. Signed-off-by: Guo Ren <[email protected]> Tested-by: Liu Zhiwei <[email protected]>
2018-12-31csky: fixup save hi,lo,dspcr regs in switch_stack.Guo Ren8-68/+79
HI, LO, DSPCR registers are 807/810 related regs and no need for 610/860. All of the regs must be saved in pt_regs and switch_stack. This patch fixup saving dspcr reg in switch_stack and pt_regs. Signed-off-by: Guo Ren <[email protected]>
2018-12-31csky: remove syscall_exit_workGuo Ren1-12/+4
Remove syscall_exit_work and union all to ret_from_exception. Signed-off-by: Guo Ren <[email protected]>
2018-12-31csky: fixup remove vdsp implement for kernel.Guo Ren1-7/+1
The vr regs for vdsp only saved in task_switch not in every exception trap-in. The memcpy with vdsp instructions will destroy the vr regs for user space applications. Signed-off-by: Guo Ren <[email protected]>
2018-12-31Merge branch 'topic/xilinx' into for-linusVinod Koul2-21/+25
2018-12-31Merge branch 'topic/uniphier' into for-linusVinod Koul5-0/+544
2018-12-31Merge branch 'topic/sprd' into for-linusVinod Koul2-20/+194
2018-12-31Merge branch 'topic/sh' into for-linusVinod Koul8-105/+10
2018-12-31Merge branch 'topic/sa11x0' into for-linusVinod Koul2-37/+8
2018-12-31Merge branch 'topic/mtk' into for-linusVinod Koul3-0/+965
2018-12-31Merge branch 'topic/imx' into for-linusVinod Koul1-3/+1
2018-12-31Merge branch 'topic/ep93xx' into for-linusVinod Koul1-3/+3
2018-12-31Merge branch 'topic/dw' into for-linusVinod Koul7-1/+39
2018-12-31Merge branch 'topic/dmatest' into for-linusVinod Koul2-59/+349
2018-12-31Merge branch 'topic/dirn_remove' into for-linusVinod Koul4-32/+111
2018-12-31Merge branch 'topic/coh' into for-linusVinod Koul1-5/+0
2018-12-31Merge branch 'topic/bcm' into for-linusVinod Koul1-11/+2
2018-12-31rtc: rename core filesAlexandre Belloni5-4/+4
Rename core files so there is a clearer separation between the RTC core and the RTC drivers. Signed-off-by: Alexandre Belloni <[email protected]>
2018-12-31cifs: update internal module version numberSteve French1-1/+1
To version 2.15 Signed-off-by: Steve French <[email protected]>
2018-12-31cifs: we can not use small padding iovs together with encryptionRonnie Sahlberg3-33/+55
We can not append small padding buffers as separate iovs when encryption is used. For this case we must flatten the request into a single buffer containing both the data from all the iovs as well as the padding bytes. This is at least needed for 4.20 as well due to compounding changes. CC: Stable <[email protected]> Signed-off-by: Ronnie Sahlberg <[email protected]> Signed-off-by: Steve French <[email protected]>
2018-12-31ext4: track writeback errors using the generic tracking infrastructureTheodore Ts'o1-0/+3
We already using mapping_set_error() in fs/ext4/page_io.c, so all we need to do is to use file_check_and_advance_wb_err() when handling fsync() requests in ext4_sync_file(). Signed-off-by: Theodore Ts'o <[email protected]> Cc: [email protected]
2018-12-31ext4: use ext4_write_inode() when fsyncing w/o a journalTheodore Ts'o1-4/+9
In no-journal mode, we previously used __generic_file_fsync() in no-journal mode. This triggers a lockdep warning, and in addition, it's not safe to depend on the inode writeback mechanism in the case ext4. We can solve both problems by calling ext4_write_inode() directly. Signed-off-by: Theodore Ts'o <[email protected]> Cc: [email protected]
2018-12-30r8169: fix WoL device wakeup enableHeiner Kallweit1-2/+2
In rtl8169_runtime_resume() we configure WoL but don't set the device to wakeup-enabled. This prevents PME generation once the cable is re-plugged. Fix this by moving the call to device_set_wakeup_enable() to __rtl8169_set_wol(). Fixes: 433f9d0ddcc6 ("r8169: improve saved_wolopts handling") Signed-off-by: Heiner Kallweit <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-12-30netrom: fix locking in nr_find_socket()Cong Wang1-5/+10
nr_find_socket(), nr_find_peer() and nr_find_listener() lock the sock after finding it in the global list. However, the call path requires BH disabled for the sock lock consistently. Actually the locking is unnecessary at this point, we can just hold the sock refcnt to make sure it is not gone after we unlock the global list, and lock it later only when needed. Reported-and-tested-by: [email protected] Signed-off-by: Cong Wang <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-12-30net/wan: fix a double free in x25_asy_open_tty()Cong Wang1-0/+2
When x25_asy_open() fails, it already cleans up by itself, so its caller doesn't need to free the memory again. It seems we still have to call x25_asy_free() to clear the SLF_INUSE bit, so just set these pointers to NULL after kfree(). Reported-and-tested-by: [email protected] Fixes: 3b780bed3138 ("x25_asy: Free x25_asy on x25_asy_open() failure.") Signed-off-by: Cong Wang <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-12-30ext4: avoid kernel warning when writing the superblock to a dead deviceTheodore Ts'o1-1/+1
The xfstests generic/475 test switches the underlying device with dm-error while running a stress test. This results in a large number of file system errors, and since we can't lock the buffer head when marking the superblock dirty in the ext4_grp_locked_error() case, it's possible the superblock to be !buffer_uptodate() without buffer_write_io_error() being true. We need to set buffer_uptodate() before we call mark_buffer_dirty() or this will trigger a WARN_ON. It's safe to do this since the superblock must have been properly read into memory or the mount would have been successful. So if buffer_uptodate() is not set, we can safely assume that this happened due to a failed attempt to write the superblock. Signed-off-by: Theodore Ts'o <[email protected]> Cc: [email protected]
2018-12-31csky: bugfix gdb coredump error.Guo Ren1-1/+6
In gdb/bfd elf32-csky.c, csky_elf_grok_prstatus() use fixed size of elf_prstatus. It's 148 for abiv1 and 220 for abiv2, the size is enough for coredump and no need full sizeof(struct pt_regs). Signed-off-by: Guo Ren <[email protected]> Reported-by: Lu Baoquan <[email protected]> Reported-by: Liu Mao <[email protected]>
2018-12-31csky: fixup abiv2 mmap(... O_SYNC) failed.Guo Ren3-2/+3
Glibc function mmap(... O_SYNC) will make page to _PAGE_UNCACHE + _PAGE_SO and strong-order page couldn't support unalignment access. So remove _PAGE_SO from _PAGE_UNCACHE, also sync abiv1 with the macro of _PAGE_SO. Signed-off-by: Guo Ren <[email protected]> Reported-by: Liu Renwei <[email protected]> Tested-by: Yuan Qiyun <[email protected]>
2018-12-31rtc: nvmem: fix possible use after freeAlexandre Belloni1-4/+5
In cas of probe failure, devres may free the memory allocated for rtc->nvram before devm_rtc_release_device() is called. This leads to rtc_nvram_unregister using it after being freed which may lead to a crash. This has been shown to happen after commit 461e557b9727 ("rtc: nvmem: use devm_nvmem_register()") Reported-by: kernel test robot <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]>
2018-12-31Merge branch 'drm-next-4.21' of git://people.freedesktop.org/~agd5f/linux ↵Dave Airlie43-285/+582
into drm-next Fixes for 4.21. A bit more than usual due to the holidays. Highlights: - add new vegaM pci id - sr-iov fixes - DC fix for fast cursor updates - DC freesync fix - DC display clock fix for polaris - DC fixes for dongles - DC fix for some eDP panels - misc vega20 fixes - kfd return code fix for dma_buf support - VCN fixes for PCO - nbio hw bug workaround Signed-off-by: Dave Airlie <[email protected]> From: Alex Deucher <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2018-12-30ax25: fix a use-after-free in ax25_fillin_cb()Cong Wang2-2/+11
There are multiple issues here: 1. After freeing dev->ax25_ptr, we need to set it to NULL otherwise we may use a dangling pointer. 2. There is a race between ax25_setsockopt() and device notifier as reported by syzbot. Close it by holding RTNL lock. 3. We need to test if dev->ax25_ptr is NULL before using it. Reported-and-tested-by: [email protected] Signed-off-by: Cong Wang <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-12-30ipv6: fix typo in net/ipv6/reassembly.cSu Yanjun1-1/+1
Signed-off-by: Su Yanjun <[email protected]> Signed-off-by: David S. Miller <[email protected]>
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