kernel/linux.git/arch/xtensa/platforms, branch v6.12.80

xtensa: simdisk: add input size check in proc_write_simdisk

2025-10-19T14:33:53+00:00

commit 5d5f08fd0cd970184376bee07d59f635c8403f63 upstream. A malicious user could pass an arbitrarily bad value to memdup_user_nul(), potentially causing kernel crash. This follows the same pattern as commit ee76746387f6 ("netdevsim: prevent bad user input in nsim_dev_health_break_write()") Fixes: b6c7e873daf7 ("xtensa: ISS: add host file-based simulated disk") Fixes: 16e5c1fc3604 ("convert a bunch of open-coded instances of memdup_user_nul()") Cc: stable@vger.kernel.org Signed-off-by: Miaoqian Lin Message-Id: <20250829083015.1992751-1-linmq006@gmail.com> Signed-off-by: Max Filippov Signed-off-by: Greg Kroah-Hartman

block: move the nonrot flag to queue_limits

2024-06-19T13:58:28+00:00

Move the nonrot flag into the queue_limits feature field so that it can be set atomically with the queue frozen. Use the chance to switch to defaulting to non-rotational and require the driver to opt into rotational, which matches the polarity of the sysfs interface. For the z2ram, ps3vram, 2x memstick, ubiblock and dcssblk the new rotational flag is not set as they clearly are not rotational despite this being a behavior change. There are some other drivers that unconditionally set the rotational flag to keep the existing behavior as they arguably can be used on rotational devices even if that is probably not their main use today (e.g. virtio_blk and drbd). The flag is automatically inherited in blk_stack_limits matching the existing behavior in dm and md. Signed-off-by: Christoph Hellwig Reviewed-by: Damien Le Moal Reviewed-by: Hannes Reinecke Link: https://lore.kernel.org/r/20240617060532.127975-15-hch@lst.de Signed-off-by: Jens Axboe

Merge tag 'xtensa-20240502' of https://github.com/jcmvbkbc/linux-xtensa

2024-05-02T17:41:28+00:00

Pull xtensa fixes from Max Filippov: - fix unused variable warning caused by empty flush_dcache_page() definition - fix stack unwinding on windowed noMMU XIP configurations - fix Coccinelle warning 'opportunity for min()' in xtensa ISS platform code * tag 'xtensa-20240502' of https://github.com/jcmvbkbc/linux-xtensa: xtensa: remove redundant flush_dcache_page and ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE macros tty: xtensa/iss: Use min() to fix Coccinelle warning xtensa: fix MAKE_PC_FROM_RA second argument

tty: xtensa/iss: Use min() to fix Coccinelle warning

2024-04-04T09:10:44+00:00

Inline strlen() and use min() to fix the following Coccinelle/coccicheck warning reported by minmax.cocci: WARNING opportunity for min() Signed-off-by: Thorsten Blum Message-Id: <20240404075811.6936-3-thorsten.blum@toblux.com> Reviewed-by: Jiri Slaby Signed-off-by: Max Filippov

block: pass a queue_limits argument to blk_alloc_disk

2024-02-19T23:58:23+00:00

Pass a queue_limits to blk_alloc_disk and apply it if non-NULL. This will allow allocating queues with valid queue limits instead of setting the values one at a time later. Also change blk_alloc_disk to return an ERR_PTR instead of just NULL which can't distinguish errors. Signed-off-by: Christoph Hellwig Reviewed-by: Dan Williams Reviewed-by: Himanshu Madhani Link: https://lore.kernel.org/r/20240215071055.2201424-2-hch@lst.de Signed-off-by: Jens Axboe

tty: xtensa/iss: use u8

2023-12-08T11:02:38+00:00

Switch character types to u8. To conform to characters in the rest of the tty layer. Signed-off-by: "Jiri Slaby (SUSE)" Cc: Chris Zankel Cc: Max Filippov Link: https://lore.kernel.org/r/20231206073712.17776-28-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman

xtensa: iss/network: make functions static

2023-09-20T12:03:21+00:00

Make 2 functions static to prevent build warnings: arch/xtensa/platforms/iss/network.c:204:16: warning: no previous prototype for 'tuntap_protocol' [-Wmissing-prototypes] 204 | unsigned short tuntap_protocol(struct sk_buff *skb) arch/xtensa/platforms/iss/network.c:444:6: warning: no previous prototype for 'iss_net_user_timer_expire' [-Wmissing-prototypes] 444 | void iss_net_user_timer_expire(struct timer_list *unused) Fixes: 7282bee78798 ("xtensa: Architecture support for Tensilica Xtensa Part 8") Fixes: d8479a21a98b ("xtensa: Convert timers to use timer_setup()") Signed-off-by: Randy Dunlap Cc: Chris Zankel Cc: Max Filippov Message-Id: <20230920052139.10570-14-rdunlap@infradead.org> Signed-off-by: Max Filippov

tty: make tty_operations::write()'s count size_t

2023-08-11T19:12:46+00:00

Unify with the rest of the code. Use size_t for counts and ssize_t for retval. Signed-off-by: "Jiri Slaby (SUSE)" Link: https://lore.kernel.org/r/20230810091510.13006-30-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman

tty: propagate u8 data to tty_operations::write()

2023-08-11T19:12:46+00:00

Data are now typed as u8. Propagate this change to tty_operations::write(). Signed-off-by: "Jiri Slaby (SUSE)" Cc: Richard Henderson Cc: Ivan Kokshaysky Cc: Matt Turner Cc: Geert Uytterhoeven Cc: Richard Weinberger Cc: Anton Ivanov Cc: Johannes Berg Cc: Chris Zankel Cc: Max Filippov Cc: Arnd Bergmann Cc: Vaibhav Gupta Cc: Jens Taprogge Cc: Karsten Keil Cc: Scott Branden Cc: Ulf Hansson Cc: "David S. Miller" Cc: Eric Dumazet Cc: Jakub Kicinski Cc: Paolo Abeni Cc: Heiko Carstens Cc: Vasily Gorbik Cc: Alexander Gordeev Cc: Christian Borntraeger Cc: Sven Schnelle Cc: David Lin Cc: Johan Hovold Cc: Alex Elder Cc: Laurentiu Tudor Cc: Jiri Kosina Cc: David Sterba Cc: Shawn Guo Cc: Sascha Hauer Cc: Pengutronix Kernel Team Cc: Fabio Estevam Cc: NXP Linux Team Cc: Arnaud Pouliquen Cc: Oliver Neukum Cc: Mathias Nyman Cc: Marcel Holtmann Cc: Johan Hedberg Cc: Luiz Augusto von Dentz Link: https://lore.kernel.org/r/20230810091510.13006-28-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman

tty: xtensa/iss: drop unneeded tty_operations hooks

2023-08-11T19:12:44+00:00

All ::flush_chars(), ::hangup(), and ::wait_until_sent() from struct tty_operations are optional. There is no need to provide them with empty bodies. tty_operations::put_char() needs not be provided if it is the same as tty_operations::write(tty, &ch, 1). So drop all of them. Signed-off-by: "Jiri Slaby (SUSE)" Cc: Chris Zankel Cc: Max Filippov Acked-by: Max Filippov Link: https://lore.kernel.org/r/20230810091510.13006-2-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman