From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Brad Love <brad@nextdimension.cc>,
Hans Verkuil <hans.verkuil@cisco.com>,
Mauro Carvalho Chehab <mchehab+samsung@kernel.org>,
Sasha Levin <sashal@kernel.org>
Subject: [PATCH 4.14 46/92] media: au0828: cannot kfree dev before usb disconnect
Date: Thu, 18 Apr 2019 19:57:04 +0200 [thread overview]
Message-ID: <20190418160434.152721181@linuxfoundation.org> (raw)
In-Reply-To: <20190418160430.325165109@linuxfoundation.org>
[ Upstream commit 4add7104919f9e94e0db03e234caeadbfcc02ea9 ]
If au0828_analog_register fails, the dev is kfree'd and then flow
jumps to done, which can call au0828_usb_disconnect. Since all USB
error codes are negative, au0828_usb_disconnect will be called. The
problem is au0828_usb_disconnect uses dev, if dev is NULL then there
is immediate oops encountered.
[ 7.454307] au0828: au0828_usb_probe() au0282_dev_register failed to register on V4L2
[ 7.454323] BUG: unable to handle kernel NULL pointer dereference at 0000000000000050
[ 7.454421] PGD 0 P4D 0
[ 7.454457] Oops: 0002 [#1] SMP PTI
[ 7.454500] CPU: 1 PID: 262 Comm: systemd-udevd Tainted: P O 4.18.3 #1
[ 7.454584] Hardware name: Google Panther/Panther, BIOS MattDevo 04/27/2015
[ 7.454670] RIP: 0010:_raw_spin_lock_irqsave+0x2c/0x50
[ 7.454725] Code: 44 00 00 55 48 89 e5 41 54 53 48 89 fb 9c 58 0f 1f 44 00 00 49 89 c4 fa 66 0f 1f 44 00 00 e8 db 23 1b ff 31 c0 ba 01 00 00 00 <f0> 0f b1 13 85 c0 75 08 4c 89 e0 5b 41 5c 5d c3 89 c6 48 89 df e8
[ 7.455004] RSP: 0018:ffff9130f53ef988 EFLAGS: 00010046
[ 7.455063] RAX: 0000000000000000 RBX: 0000000000000050 RCX: 0000000000000000
[ 7.455139] RDX: 0000000000000001 RSI: 0000000000000003 RDI: 0000000000000050
[ 7.455216] RBP: ffff9130f53ef998 R08: 0000000000000018 R09: 0000000000000090
[ 7.455292] R10: ffffed4cc53cb000 R11: ffffed4cc53cb108 R12: 0000000000000082
[ 7.455369] R13: ffff9130cf2c6188 R14: 0000000000000000 R15: 0000000000000018
[ 7.455447] FS: 00007f2ff8514cc0(0000) GS:ffff9130fcb00000(0000) knlGS:0000000000000000
[ 7.455535] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7.455597] CR2: 0000000000000050 CR3: 00000001753f0002 CR4: 00000000000606a0
[ 7.455675] Call Trace:
[ 7.455713] __wake_up_common_lock+0x65/0xc0
[ 7.455764] __wake_up+0x13/0x20
[ 7.455808] ir_lirc_unregister+0x57/0xe0 [rc_core]
[ 7.455865] rc_unregister_device+0xa0/0xc0 [rc_core]
[ 7.455935] au0828_rc_unregister+0x25/0x40 [au0828]
[ 7.455999] au0828_usb_disconnect+0x33/0x80 [au0828]
[ 7.456064] au0828_usb_probe.cold.16+0x8d/0x2aa [au0828]
[ 7.456130] usb_probe_interface+0xf1/0x300
[ 7.456184] driver_probe_device+0x2e3/0x460
[ 7.456235] __driver_attach+0xe4/0x110
[ 7.456282] ? driver_probe_device+0x460/0x460
[ 7.456335] bus_for_each_dev+0x74/0xb0
[ 7.456385] ? kmem_cache_alloc_trace+0x15d/0x1d0
[ 7.456441] driver_attach+0x1e/0x20
[ 7.456485] bus_add_driver+0x159/0x230
[ 7.456532] driver_register+0x70/0xc0
[ 7.456578] usb_register_driver+0x7f/0x140
[ 7.456626] ? 0xffffffffc0474000
[ 7.456674] au0828_init+0xbc/0x1000 [au0828]
[ 7.456725] do_one_initcall+0x4a/0x1c9
[ 7.456771] ? _cond_resched+0x19/0x30
[ 7.456817] ? kmem_cache_alloc_trace+0x15d/0x1d0
[ 7.456873] do_init_module+0x60/0x210
[ 7.456918] load_module+0x221b/0x2710
[ 7.456966] ? vfs_read+0xf5/0x120
[ 7.457010] __do_sys_finit_module+0xbd/0x120
[ 7.457061] ? __do_sys_finit_module+0xbd/0x120
[ 7.457115] __x64_sys_finit_module+0x1a/0x20
[ 7.457166] do_syscall_64+0x5b/0x110
[ 7.457210] entry_SYSCALL_64_after_hwframe+0x49/0xbe
Signed-off-by: Brad Love <brad@nextdimension.cc>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/media/usb/au0828/au0828-core.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/media/usb/au0828/au0828-core.c b/drivers/media/usb/au0828/au0828-core.c
index cd363a2100d4..257ae0d8cfe2 100644
--- a/drivers/media/usb/au0828/au0828-core.c
+++ b/drivers/media/usb/au0828/au0828-core.c
@@ -629,7 +629,6 @@ static int au0828_usb_probe(struct usb_interface *interface,
pr_err("%s() au0282_dev_register failed to register on V4L2\n",
__func__);
mutex_unlock(&dev->lock);
- kfree(dev);
goto done;
}
--
2.19.1
next prev parent reply other threads:[~2019-04-18 18:26 UTC|newest]
Thread overview: 100+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-18 17:56 [PATCH 4.14 00/92] 4.14.113-stable review Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 01/92] ARC: u-boot args: check that magic number is correct Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 02/92] arc: hsdk_defconfig: Enable CONFIG_BLK_DEV_RAM Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 03/92] perf/core: Restore mmap record type correctly Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 04/92] ext4: add missing brelse() in add_new_gdb_meta_bg() Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 05/92] ext4: report real fs size after failed resize Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 06/92] ALSA: echoaudio: add a check for ioremap_nocache Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 07/92] ALSA: sb8: add a check for request_region Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 08/92] auxdisplay: hd44780: Fix memory leak on ->remove() Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 09/92] IB/mlx4: Fix race condition between catas error reset and aliasguid flows Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 10/92] mmc: davinci: remove extraneous __init annotation Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 11/92] ALSA: opl3: fix mismatch between snd_opl3_drum_switch definition and declaration Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 12/92] thermal/intel_powerclamp: fix __percpu declaration of worker_data Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 13/92] thermal: bcm2835: Fix crash in bcm2835_thermal_debugfs Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 14/92] thermal/int340x_thermal: Add additional UUIDs Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 15/92] thermal/int340x_thermal: fix mode setting Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 16/92] thermal/intel_powerclamp: fix truncated kthread name Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 17/92] scsi: iscsi: flush running unbind operations when removing a session Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 18/92] x86/mm: Dont leak kernel addresses Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 19/92] tools/power turbostat: return the exit status of a command Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 20/92] perf list: Dont forget to drop the reference to the allocated thread_map Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 21/92] perf config: Fix an error in the config template documentation Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 22/92] perf config: Fix a memory leak in collect_config() Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 23/92] perf build-id: Fix memory leak in print_sdt_events() Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 24/92] perf top: Fix error handling in cmd_top() Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 25/92] perf hist: Add missing map__put() in error case Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 26/92] perf evsel: Free evsel->counts in perf_evsel__exit() Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 27/92] perf tests: Fix a memory leak of cpu_map object in the openat_syscall_event_on_all_cpus test Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 28/92] perf tests: Fix memory leak by expr__find_other() in test__expr() Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 29/92] perf tests: Fix a memory leak in test__perf_evsel__tp_sched_test() Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 30/92] irqchip/mbigen: Dont clear eventid when freeing an MSI Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 31/92] x86/hpet: Prevent potential NULL pointer dereference Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 32/92] x86/cpu/cyrix: Use correct macros for Cyrix calls on Geode processors Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 33/92] drm/nouveau/debugfs: Fix check of pm_runtime_get_sync failure Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 34/92] iommu/vt-d: Check capability before disabling protected memory Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 35/92] x86/hw_breakpoints: Make default case in hw_breakpoint_arch_parse() return an error Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 36/92] fix incorrect error code mapping for OBJECTID_NOT_FOUND Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 37/92] ext4: prohibit fstrim in norecovery mode Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 38/92] gpio: pxa: handle corner case of unprobed device Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 39/92] rsi: improve kernel thread handling to fix kernel panic Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 40/92] 9p: do not trust pdu content for stat item size Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 4.14 41/92] 9p locks: add mount option for lock retry interval Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 42/92] f2fs: fix to do sanity check with current segment number Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 43/92] netfilter: xt_cgroup: shrink size of v2 path Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 44/92] serial: uartps: console_setup() cant be placed to init section Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 45/92] powerpc/pseries: Remove prrn_work workqueue Greg Kroah-Hartman
2019-04-18 17:57 ` Greg Kroah-Hartman [this message]
2019-04-18 17:57 ` [PATCH 4.14 47/92] HID: i2c-hid: override HID descriptors for certain devices Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 48/92] ARM: samsung: Limit SAMSUNG_PM_CHECK config option to non-Exynos platforms Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 49/92] usbip: fix vhci_hcd controller counting Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 50/92] ACPI / SBS: Fix GPE storm on recent MacBookPros Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 51/92] KVM: nVMX: restore host state in nested_vmx_vmexit for VMFail Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 52/92] compiler.h: update definition of unreachable() Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 53/92] cifs: fallback to older infolevels on findfirst queryinfo retry Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 54/92] kernel: hung_task.c: disable on suspend Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 55/92] crypto: sha256/arm - fix crash bug in Thumb2 build Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 56/92] crypto: sha512/arm " Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 57/92] iommu/dmar: Fix buffer overflow during PCI bus notification Greg Kroah-Hartman
2019-04-18 18:14 ` Gustavo A. R. Silva
2019-04-18 17:57 ` [PATCH 4.14 58/92] soc/tegra: pmc: Drop locking from tegra_powergate_is_powered() Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 59/92] lkdtm: Print real addresses Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 60/92] lkdtm: Add tests for NULL pointer dereference Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 61/92] drm/panel: panel-innolux: set display off in innolux_panel_unprepare Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 62/92] crypto: axis - fix for recursive locking from bottom half Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 63/92] Revert "ACPI / EC: Remove old CLEAR_ON_RESUME quirk" Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 64/92] coresight: cpu-debug: Support for CA73 CPUs Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 65/92] drm/nouveau/volt/gf117: fix speedo readout register Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 66/92] ARM: 8839/1: kprobe: make patch_lock a raw_spinlock_t Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 67/92] drm/amdkfd: use init_mqd function to allocate object for hid_mqd (CI) Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 68/92] appletalk: Fix use-after-free in atalk_proc_exit Greg Kroah-Hartman
2019-04-18 20:14 ` Sudip Mukherjee
2019-04-19 13:39 ` Sasha Levin
2019-04-18 17:57 ` [PATCH 4.14 69/92] lib/div64.c: off by one in shift Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 70/92] include/linux/swap.h: use offsetof() instead of custom __swapoffset macro Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 71/92] bpf: fix use after free in bpf_evict_inode Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 72/92] dm: disable CRYPTO_TFM_REQ_MAY_SLEEP to fix a GFP_KERNEL recursion deadlock Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 73/92] bpf: reduce verifier memory consumption Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 74/92] bpf: fix verifier memory leaks Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 75/92] bpf: fix verifier NULL pointer dereference Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 76/92] bpf: fix stack state printing in verifier log Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 77/92] bpf: move {prev_,}insn_idx into verifier env Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 78/92] bpf: move tmp variable into ax register in interpreter Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 79/92] bpf: enable access to ax register also from verifier rewrite Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 80/92] bpf: restrict map value pointer arithmetic for unprivileged Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 81/92] bpf: restrict stack " Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 82/92] bpf: restrict unknown scalars of mixed signed bounds " Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 83/92] bpf: fix check_map_access smin_value test when pointer contains offset Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 84/92] bpf: prevent out of bounds speculation on pointer arithmetic Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 85/92] bpf: fix sanitation of alu op with pointer / scalar type from different paths Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 86/92] bpf: fix inner map masking to prevent oob under speculation Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 87/92] bpf: do not restore dst_reg when cur_state is freed Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 88/92] bpf: fix sanitation rewrite in case of non-pointers Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 89/92] bpf: Fix selftests are changes for CVE 2019-7308 Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 90/92] tools include: Adopt linux/bits.h Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 91/92] net: stmmac: Set dma ring length before enabling the DMA Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 4.14 92/92] [PATCH 4.19.y 2/2] mm: hide incomplete nr_indirectly_reclaimable in sysfs Greg Kroah-Hartman
2019-04-19 7:00 ` [PATCH 4.14 00/92] 4.14.113-stable review Naresh Kamboju
2019-04-19 10:08 ` Jon Hunter
2019-04-19 14:23 ` shuah
2019-04-19 19:39 ` Guenter Roeck
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