Revision bbdc74dc19e09ac4e71bfb219596b3d5bc786720 authored by Grzegorz Sluja on 13 July 2017, 09:17:58 UTC, committed by Ulf Hansson on 13 July 2017, 09:44:01 UTC
The commit 304419d8a7e9 ("mmc: core: Allocate per-request data using the block layer core"), refactored the mechanism of queue handling, but also made mmc_init_request() to be called after mmc_cleanup_queue(). This triggers a null pointer dereference: [ 683.123791] BUG: unable to handle kernel NULL pointer dereference at (null) [ 683.123801] IP: mmc_init_request+0x2c/0xf0 [mmc_block] ... [ 683.123905] Call Trace: [ 683.123913] alloc_request_size+0x4f/0x70 [ 683.123919] mempool_alloc+0x5f/0x150 [ 683.123925] ? __enqueue_entity+0x6c/0x70 [ 683.123928] get_request+0x3ad/0x720 [ 683.123933] ? prepare_to_wait_event+0x110/0x110 [ 683.123937] blk_queue_bio+0xc1/0x3a0 [ 683.123940] generic_make_request+0xf8/0x2a0 [ 683.123942] submit_bio+0x75/0x150 [ 683.123947] submit_bio_wait+0x51/0x70 [ 683.123951] blkdev_issue_flush+0x5c/0x90 [ 683.123956] ext4_sync_fs+0x171/0x1b0 [ 683.123961] sync_filesystem+0x73/0x90 [ 683.123965] fsync_bdev+0x24/0x50 [ 683.123971] invalidate_partition+0x24/0x50 [ 683.123973] del_gendisk+0xb2/0x2a0 [ 683.123977] mmc_blk_remove_req.part.38+0x71/0xa0 [mmc_block] [ 683.123980] mmc_blk_remove+0xba/0x190 [mmc_block] [ 683.123990] mmc_bus_remove+0x1a/0x20 [mmc_core] [ 683.123995] device_release_driver_internal+0x141/0x200 [ 683.123999] device_release_driver+0x12/0x20 [ 683.124001] bus_remove_device+0xfd/0x170 [ 683.124004] device_del+0x1e8/0x330 [ 683.124012] mmc_remove_card+0x60/0xc0 [mmc_core] [ 683.124019] mmc_remove+0x19/0x30 [mmc_core] [ 683.124025] mmc_stop_host+0xfb/0x1a0 [mmc_core] [ 683.124032] mmc_remove_host+0x1a/0x40 [mmc_core] [ 683.124037] sdhci_remove_host+0x2e/0x1c0 [mmc_sdhci] [ 683.124042] sdhci_pci_remove_slot+0x3f/0x80 [sdhci_pci] [ 683.124045] sdhci_pci_remove+0x39/0x70 [sdhci_pci] [ 683.124049] pci_device_remove+0x39/0xc0 [ 683.124052] device_release_driver_internal+0x141/0x200 [ 683.124056] driver_detach+0x3f/0x80 [ 683.124059] bus_remove_driver+0x55/0xd0 [ 683.124062] driver_unregister+0x2c/0x50 [ 683.124065] pci_unregister_driver+0x29/0x90 [ 683.124069] sdhci_driver_exit+0x10/0x4f3 [sdhci_pci] [ 683.124073] SyS_delete_module+0x171/0x250 [ 683.124078] entry_SYSCALL_64_fastpath+0x1e/0xa9 Fix this by setting the queue DYING flag before cleanup the queue, as it prevents new reqs from entering the queue. Signed-off-by: Grzegorz Sluja <grzegorzx.sluja@intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Fixes: 304419d8a7e9 ("mmc: core: Allocate per-request data using the...") [Ulf: Updated the changelog] Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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File | Mode | Size |
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bridge | ||
i2c | ||
tinydrm | ||
ttm | ||
ati_pcigart.h | -rw-r--r-- | 692 bytes |
drmP.h | -rw-r--r-- | 14.9 KB |
drm_agpsupport.h | -rw-r--r-- | 3.8 KB |
drm_atomic.h | -rw-r--r-- | 31.2 KB |
drm_atomic_helper.h | -rw-r--r-- | 10.6 KB |
drm_auth.h | -rw-r--r-- | 2.6 KB |
drm_blend.h | -rw-r--r-- | 2.0 KB |
drm_bridge.h | -rw-r--r-- | 9.9 KB |
drm_cache.h | -rw-r--r-- | 1.9 KB |
drm_color_mgmt.h | -rw-r--r-- | 1.6 KB |
drm_connector.h | -rw-r--r-- | 33.4 KB |
drm_crtc.h | -rw-r--r-- | 32.1 KB |
drm_crtc_helper.h | -rw-r--r-- | 3.2 KB |
drm_debugfs.h | -rw-r--r-- | 3.4 KB |
drm_debugfs_crc.h | -rw-r--r-- | 2.6 KB |
drm_displayid.h | -rw-r--r-- | 2.8 KB |
drm_dp_dual_mode_helper.h | -rw-r--r-- | 4.4 KB |
drm_dp_helper.h | -rw-r--r-- | 42.2 KB |
drm_dp_mst_helper.h | -rw-r--r-- | 16.4 KB |
drm_drv.h | -rw-r--r-- | 19.0 KB |
drm_edid.h | -rw-r--r-- | 14.7 KB |
drm_encoder.h | -rw-r--r-- | 7.9 KB |
drm_encoder_slave.h | -rw-r--r-- | 6.5 KB |
drm_fb_cma_helper.h | -rw-r--r-- | 1.9 KB |
drm_fb_helper.h | -rw-r--r-- | 14.8 KB |
drm_file.h | -rw-r--r-- | 10.6 KB |
drm_fixed.h | -rw-r--r-- | 4.7 KB |
drm_flip_work.h | -rw-r--r-- | 3.0 KB |
drm_fourcc.h | -rw-r--r-- | 2.8 KB |
drm_framebuffer.h | -rw-r--r-- | 9.6 KB |
drm_gem.h | -rw-r--r-- | 10.1 KB |
drm_gem_cma_helper.h | -rw-r--r-- | 3.5 KB |
drm_global.h | -rw-r--r-- | 1.9 KB |
drm_hashtab.h | -rw-r--r-- | 3.0 KB |
drm_ioctl.h | -rw-r--r-- | 6.2 KB |
drm_irq.h | -rw-r--r-- | 1.3 KB |
drm_legacy.h | -rw-r--r-- | 6.8 KB |
drm_mipi_dsi.h | -rw-r--r-- | 10.1 KB |
drm_mm.h | -rw-r--r-- | 16.5 KB |
drm_mode_config.h | -rw-r--r-- | 25.6 KB |
drm_mode_object.h | -rw-r--r-- | 5.6 KB |
drm_modes.h | -rw-r--r-- | 17.3 KB |
drm_modeset_helper.h | -rw-r--r-- | 1.6 KB |
drm_modeset_helper_vtables.h | -rw-r--r-- | 46.4 KB |
drm_modeset_lock.h | -rw-r--r-- | 3.9 KB |
drm_of.h | -rw-r--r-- | 2.3 KB |
drm_os_linux.h | -rw-r--r-- | 2.0 KB |
drm_panel.h | -rw-r--r-- | 7.0 KB |
drm_pci.h | -rw-r--r-- | 2.6 KB |
drm_pciids.h | -rw-r--r-- | 66.4 KB |
drm_plane.h | -rw-r--r-- | 19.6 KB |
drm_plane_helper.h | -rw-r--r-- | 3.2 KB |
drm_prime.h | -rw-r--r-- | 3.1 KB |
drm_print.h | -rw-r--r-- | 3.6 KB |
drm_property.h | -rw-r--r-- | 11.8 KB |
drm_rect.h | -rw-r--r-- | 5.9 KB |
drm_scdc_helper.h | -rw-r--r-- | 5.1 KB |
drm_simple_kms_helper.h | -rw-r--r-- | 4.0 KB |
drm_syncobj.h | -rw-r--r-- | 2.5 KB |
drm_sysfs.h | -rw-r--r-- | 248 bytes |
drm_vblank.h | -rw-r--r-- | 6.1 KB |
drm_vma_manager.h | -rw-r--r-- | 7.6 KB |
gma_drm.h | -rw-r--r-- | 1.0 KB |
i915_component.h | -rw-r--r-- | 4.1 KB |
i915_drm.h | -rw-r--r-- | 3.5 KB |
i915_pciids.h | -rw-r--r-- | 13.8 KB |
intel-gtt.h | -rw-r--r-- | 948 bytes |
intel_lpe_audio.h | -rw-r--r-- | 1.7 KB |
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