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Anil Gurumurthy d70f71d4c9 scsi: qla2xxx: Delay module unload while fabric scan in progress 
commit 8890bf450e upstream.

System crash seen during load/unload test in a loop.

[105954.384919] RBP: ffff914589838dc0 R08: 0000000000000000 R09: 0000000000000086
[105954.384920] R10: 000000000000000f R11: ffffa31240904be5 R12: ffff914605f868e0
[105954.384921] R13: ffff914605f86910 R14: 0000000000008010 R15: 00000000ddb7c000
[105954.384923] FS:  0000000000000000(0000) GS:ffff9163fec40000(0000) knlGS:0000000000000000
[105954.384925] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[105954.384926] CR2: 000055d31ce1d6a0 CR3: 0000000119f5e001 CR4: 0000000000770ee0
[105954.384928] PKRU: 55555554
[105954.384929] Call Trace:
[105954.384931]  <IRQ>
[105954.384934]  qla24xx_sp_unmap+0x1f3/0x2a0 [qla2xxx]
[105954.384962]  ? qla_async_scan_sp_done+0x114/0x1f0 [qla2xxx]
[105954.384980]  ? qla24xx_els_ct_entry+0x4de/0x760 [qla2xxx]
[105954.384999]  ? __wake_up_common+0x80/0x190
[105954.385004]  ? qla24xx_process_response_queue+0xc2/0xaa0 [qla2xxx]
[105954.385023]  ? qla24xx_msix_rsp_q+0x44/0xb0 [qla2xxx]
[105954.385040]  ? __handle_irq_event_percpu+0x3d/0x190
[105954.385044]  ? handle_irq_event+0x58/0xb0
[105954.385046]  ? handle_edge_irq+0x93/0x240
[105954.385050]  ? __common_interrupt+0x41/0xa0
[105954.385055]  ? common_interrupt+0x3e/0xa0
[105954.385060]  ? asm_common_interrupt+0x22/0x40

The root cause of this was that there was a free (dma_free_attrs) in the
interrupt context.  There was a device discovery/fabric scan in
progress.  A module unload was issued which set the UNLOADING flag.  As
part of the discovery, after receiving an interrupt a work queue was
scheduled (which involved a work to be queued).  Since the UNLOADING
flag is set, the work item was not allocated and the mapped memory had
to be freed.  The free occurred in interrupt context leading to system
crash.  Delay the driver unload until the fabric scan is complete to
avoid the crash.

Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/all/202512090414.07Waorz0-lkp@intel.com/
Fixes: 783e0dc4f6 ("qla2xxx: Check for device state before unloading the driver.")
Cc: stable@vger.kernel.org
Signed-off-by: Anil Gurumurthy <agurumurthy@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani2024@gmail.com>
Link: https://patch.msgid.link/20251210101604.431868-8-njavali@marvell.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2026-02-16 10:18:45 +01:00
arch riscv: Sanitize syscall table indexing under speculation 2026-02-11 13:40:20 +01:00
block block,bfq: fix aux stat accumulation destination 2026-02-11 13:40:19 +01:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto crypto: authencesn - reject too-short AAD (assoclen<8) to match ESP/ESN spec 2026-01-30 10:28:39 +01:00
Documentation gpiolib-acpi: Update file references in the Documentation and MAINTAINERS 2026-02-11 13:40:29 +01:00
drivers scsi: qla2xxx: Delay module unload while fabric scan in progress 2026-02-16 10:18:45 +01:00
fs nilfs2: Fix potential block overflow that cause system hang 2026-02-16 10:18:44 +01:00
include net: tunnel: make skb_vlan_inet_prepare() return drop reasons 2026-02-12 13:14:56 +01:00
init init: handle bootloader identifier in kernel parameters 2025-10-19 16:33:50 +02:00
io_uring io_uring/rw: recycle buffers manually for non-mshot reads 2026-02-12 13:14:56 +01:00
ipc ipc: fix to protect IPCS lookups using RCU 2025-06-27 11:11:22 +01:00
kernel ring-buffer: Avoid softlockup in ring_buffer_resize() during memory free 2026-02-11 13:40:21 +01:00
lib procfs: avoid fetching build ID while holding VMA lock 2026-02-11 13:40:18 +01:00
LICENSES LICENSES: add 0BSD license text 2024-09-01 20:43:24 -07:00
mm mm, shmem: prevent infinite loop on truncate race 2026-02-11 13:40:17 +01:00
net ipv6: Fix ECMP sibling count mismatch when clearing RTF_ADDRCONF 2026-02-11 13:40:27 +01:00
rust rust: rbtree: fix documentation typo in CursorMut peek_next method 2026-02-06 16:55:44 +01:00
samples samples/ftrace: Adjust LoongArch register restore order in direct calls 2026-01-08 10:14:50 +01:00
scripts scripts: generate_rust_analyzer: Add compiler_builtins -> core dep 2026-02-06 16:55:47 +01:00
security keys/trusted_keys: fix handle passed to tpm_buf_append_name during unseal 2026-01-30 10:28:44 +01:00
sound ALSA: hda/realtek: Really fix headset mic for TongFang X6AR55xU. 2026-02-11 13:40:29 +01:00
tools vsock/test: verify socket options after setting them 2026-02-12 13:14:57 +01:00
usr kbuild: uapi: Strip comments before size type check 2025-11-13 15:34:35 -05:00
virt KVM: Don't clobber irqfd routing type when deassigning irqfd 2026-02-11 13:40:17 +01:00
.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 gpiolib-acpi: Update file references in the Documentation and MAINTAINERS 2026-02-11 13:40:29 +01:00
Makefile Linux 6.12.71 2026-02-12 13:14:57 +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.