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Julien Massot 68e5579f4d media: ti: j721e-csi2rx: fix list_del corruption commit `ae42c6fe53` upstream. If ti_csi2rx_start_dma() fails in ti_csi2rx_dma_callback(), the buffer is marked done with VB2_BUF_STATE_ERROR but is not removed from the DMA queue. This causes the same buffer to be retried in the next iteration, resulting in a double list_del() and eventual list corruption. Fix this by removing the buffer from the queue before calling vb2_buffer_done() on error. This resolves a crash due to list_del corruption: [ 37.811243] j721e-csi2rx 30102000.ticsi2rx: Failed to queue the next buffer for DMA [ 37.832187] slab kmalloc-2k start ffff00000255b000 pointer offset 1064 size 2048 [ 37.839761] list_del corruption. next->prev should be ffff00000255bc28, but was ffff00000255d428. (next=ffff00000255b428) [ 37.850799] ------------[ cut here ]------------ [ 37.855424] kernel BUG at lib/list_debug.c:65! [ 37.859876] Internal error: Oops - BUG: 00000000f2000800 [#1] SMP [ 37.866061] Modules linked in: i2c_dev usb_f_rndis u_ether libcomposite dwc3 udc_core usb_common aes_ce_blk aes_ce_cipher ghash_ce gf128mul sha1_ce cpufreq_dt dwc3_am62 phy_gmii_sel sa2ul [ 37.882830] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.16.0-rc3+ #28 VOLUNTARY [ 37.890851] Hardware name: Bosch STLA-GSRV2-B0 (DT) [ 37.895737] pstate: 600000c5 (nZCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 37.902703] pc : __list_del_entry_valid_or_report+0xdc/0x114 [ 37.908390] lr : __list_del_entry_valid_or_report+0xdc/0x114 [ 37.914059] sp : ffff800080003db0 [ 37.917375] x29: ffff800080003db0 x28: 0000000000000007 x27: ffff800080e50000 [ 37.924521] x26: 0000000000000000 x25: ffff0000016abb50 x24: dead000000000122 [ 37.931666] x23: ffff0000016abb78 x22: ffff0000016ab080 x21: ffff800080003de0 [ 37.938810] x20: ffff00000255bc00 x19: ffff00000255b800 x18: 000000000000000a [ 37.945956] x17: 20747562202c3832 x16: 6362353532303030 x15: 0720072007200720 [ 37.953101] x14: 0720072007200720 x13: 0720072007200720 x12: 00000000ffffffea [ 37.960248] x11: ffff800080003b18 x10: 00000000ffffefff x9 : ffff800080f5b568 [ 37.967396] x8 : ffff800080f5b5c0 x7 : 0000000000017fe8 x6 : c0000000ffffefff [ 37.974542] x5 : ffff00000fea6688 x4 : 0000000000000000 x3 : 0000000000000000 [ 37.981686] x2 : 0000000000000000 x1 : ffff800080ef2b40 x0 : 000000000000006d [ 37.988832] Call trace: [ 37.991281] __list_del_entry_valid_or_report+0xdc/0x114 (P) [ 37.996959] ti_csi2rx_dma_callback+0x84/0x1c4 [ 38.001419] udma_vchan_complete+0x1e0/0x344 [ 38.005705] tasklet_action_common+0x118/0x310 [ 38.010163] tasklet_action+0x30/0x3c [ 38.013832] handle_softirqs+0x10c/0x2e0 [ 38.017761] __do_softirq+0x14/0x20 [ 38.021256] ____do_softirq+0x10/0x20 [ 38.024931] call_on_irq_stack+0x24/0x60 [ 38.028873] do_softirq_own_stack+0x1c/0x40 [ 38.033064] __irq_exit_rcu+0x130/0x15c [ 38.036909] irq_exit_rcu+0x10/0x20 [ 38.040403] el1_interrupt+0x38/0x60 [ 38.043987] el1h_64_irq_handler+0x18/0x24 [ 38.048091] el1h_64_irq+0x6c/0x70 [ 38.051501] default_idle_call+0x34/0xe0 (P) [ 38.055783] do_idle+0x1f8/0x250 [ 38.059021] cpu_startup_entry+0x34/0x3c [ 38.062951] rest_init+0xb4/0xc0 [ 38.066186] console_on_rootfs+0x0/0x6c [ 38.070031] __primary_switched+0x88/0x90 [ 38.074059] Code: b00037e0 91378000 f9400462 97e9bf49 (d4210000) [ 38.080168] ---[ end trace 0000000000000000 ]--- [ 38.084795] Kernel panic - not syncing: Oops - BUG: Fatal exception in interrupt [ 38.092197] SMP: stopping secondary CPUs [ 38.096139] Kernel Offset: disabled [ 38.099631] CPU features: 0x0000,00002000,02000801,0400420b [ 38.105202] Memory Limit: none [ 38.108260] ---[ end Kernel panic - not syncing: Oops - BUG: Fatal exception in interrupt ]--- Fixes: `b4a3d877dc` ("media: ti: Add CSI2RX support for J721E") Cc: stable@vger.kernel.org Suggested-by: Sjoerd Simons <sjoerd@collabora.com> Signed-off-by: Sjoerd Simons <sjoerd@collabora.com> Signed-off-by: Julien Massot <julien.massot@collabora.com> Reviewed-by: Jai Luthra <jai.luthra@linux.dev> Tested-by: Dirk Behme <dirk.behme@de.bosch.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		History 2025-08-15 12:14:14 +02:00
arch	MIPS: mm: tlb-r4k: Uniquify TLB entries on init	2025-08-15 12:14:13 +02:00
block	block: ensure discard_granularity is zero when discard is not supported	2025-08-15 12:14:05 +02:00
certs	sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3	2024-09-20 19:52:48 +03:00
crypto	crypto: ecdsa - Harden against integer overflows in DIV_ROUND_UP()	2025-07-17 18:37:24 +02:00
Documentation	netlink: specs: ethtool: fix module EEPROM input/output arguments	2025-08-15 12:14:05 +02:00
drivers	media: ti: j721e-csi2rx: fix list_del corruption	2025-08-15 12:14:14 +02:00
fs	smb: server: Fix extension string in ksmbd_extract_shortname()	2025-08-15 12:14:11 +02:00
include	net: usbnet: Avoid potential RCU stall on LINK_CHANGE event	2025-08-15 12:14:12 +02:00
init	io_uring: fix breakage in EXPERT menu	2025-08-15 12:13:32 +02:00
io_uring	io_uring/poll: fix POLLERR handling	2025-07-24 08:56:23 +02:00
ipc	ipc: fix to protect IPCS lookups using RCU	2025-06-27 11:11:22 +01:00
kernel	perf/core: Prevent VMA split of buffer mappings	2025-08-15 12:14:09 +02:00
lib	lib/alloc_tag: do not acquire non-existent lock in alloc_tag_top_users()	2025-07-17 18:37:14 +02:00
LICENSES	LICENSES: add 0BSD license text	2024-09-01 20:43:24 -07:00
mm	mm: swap: fix potential buffer overflow in setup_clusters()	2025-08-15 12:14:14 +02:00
net	vsock: Do not allow binding to VMADDR_PORT_ANY	2025-08-15 12:14:09 +02:00
rust	rust: use `#[used(compiler)]` to fix build and `modpost` with Rust >= 1.89.0	2025-07-24 08:56:37 +02:00
samples	samples: mei: Fix building on musl libc	2025-08-15 12:13:38 +02:00
scripts	kconfig: qconf: fix ConfigList::updateListAllforAll()	2025-08-15 12:14:03 +02:00
security	apparmor: Fix unaligned memory accesses in KUnit test	2025-08-15 12:13:59 +02:00
sound	ALSA: hda/realtek - Fix mute LED for HP Victus 16-d1xxx (MB 8A26)	2025-08-15 12:14:13 +02:00
tools	selftests/bpf: Fix build error with llvm 19	2025-08-15 12:14:10 +02:00
usr	kbuild: hdrcheck: fix cross build with clang	2025-03-13 13:02:18 +01:00
virt	KVM: Allow CPU to reschedule while setting per-page memory attributes	2025-07-17 18:37:08 +02:00
.clang-format	clang-format: Update with v6.11-rc1's `for_each` macro list	2024-08-02 13:20:31 +02:00
.clippy.toml	rust: give Clippy the minimum supported Rust version	2025-08-01 09:48:44 +01:00
.cocciconfig	scripts: add Linux .cocciconfig for coccinelle	2016-07-22 12:13:39 +02:00
.editorconfig	.editorconfig: remove trim_trailing_whitespace option	2024-06-13 16:47:52 +02:00
.get_maintainer.ignore	Add Jeff Kirsher to .get_maintainer.ignore	2024-03-08 11:36:54 +00:00
.gitattributes	.gitattributes: set diff driver for Rust source code files	2023-05-31 17:48:25 +02:00
.gitignore	rust: introduce `.clippy.toml`	2025-03-13 13:01:42 +01:00
.mailmap	mailmap: add entry for Thorsten Blum	2024-11-07 14:14:59 -08:00
.rustfmt.toml	rust: add `.rustfmt.toml`	2022-09-28 09:02:20 +02:00
COPYING	COPYING: state that all contributions really are covered by this file	2020-02-10 13:32:20 -08:00
CREDITS	MAINTAINERS: Remove self from DSA entry	2024-11-03 12:52:38 -08:00
Kbuild	Kbuild updates for v6.1	2022-10-10 12:00:45 -07:00
Kconfig	kbuild: ensure full rebuild when the compiler is updated	2020-05-12 13:28:33 +09:00
MAINTAINERS	MAINTAINERS: Update Alexey Makhalov's email address	2025-05-22 14:29:46 +02:00
Makefile	Linux 6.12.41	2025-08-01 09:48:47 +01:00
README	README: Fix spelling	2024-03-18 03:36:32 -06:00

README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.