Breno Leitao b144dc5a24 virtio_console: allocate the port_buffer with the caller's gfp ... put_chars() runs from the hvc console write path with preemption disabled, so it asks alloc_buf() for GFP_ATOMIC. Only the data buffer gets it: the struct port_buffer itself keeps the GFP_KERNEL default, so the allocation can enter direct reclaim and sleep. A write to /dev/kmsg on a CONFIG_DEBUG_ATOMIC_SLEEP kernel splats: BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:320 in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 1, name: virtme-ng-init preempt_count: 1, expected: 0 Preemption disabled at: [<ffffffff813fd90d>] vprintk_emit+0x17d/0x510 Call Trace: <TASK> dump_stack_lvl+0x69/0xa0 __might_resched+0x37a/0x4d0 __kmalloc_cache_noprof+0x94/0x5f0 put_chars+0x209/0x3e0 hvc_console_print+0x234/0x640 console_flush_all+0x4fc/0x950 console_unlock+0xbf/0x1b0 vprintk_emit+0x312/0x510 devkmsg_emit+0xba/0x110 devkmsg_write+0x21b/0x2e0 vfs_write+0x4dc/0x9d0 ksys_write+0x108/0x1e0 do_syscall_64+0xfa/0x460 </TASK> Pass gfp on to that allocation too. Fixes: fc220d6be3 ("virtio_console: refactor __send_to_port() buffer ownership") Signed-off-by: Breno Leitao <leitao@debian.org> Acked-by: Sungho Bae <baver.bae@lge.com> Tested-by: Florian Westphal <fw@strlen.de> Link: https://patch.msgid.link/20260810-serial-v1-1-abbe51602c13@debian.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2026-09-05 19:28:39 +02:00
..
agp	agp/amd-k7: Don't rely on address of pci_device_id	2026-07-28 11:18:24 -05:00
hw_random	This update includes the following changes:	2026-08-19 17:25:42 -07:00
ipmi	ipmi: Fix use-after-free of cmd_rcvr in _ipmi_destroy_user()	2026-08-25 18:55:02 -05:00
tpm	tpm-buf: Add TPM buffer support header for standalone reuse	2026-08-25 18:13:37 +03:00
xilinx_hwicap	char: xilinx_hwicap: unregister class on init errors	2026-07-17 16:22:57 +02:00
xillybus	char: xillybus: Remove redundant dev_err()	2026-07-17 16:23:18 +02:00
adi.c	char/adi: Use min_t(size_t,,) in adi_read() + adi_write()	2025-10-22 07:53:49 +02:00
apm-emulation.c	Convert 'alloc_obj' family to use the new default GFP_KERNEL argument	2026-02-21 17:09:51 -08:00
bsr.c	Convert 'alloc_obj' family to use the new default GFP_KERNEL argument	2026-02-21 17:09:51 -08:00
ds1620.c
dsp56k.c
hangcheck-timer.c	hangcheck-timer: fix coding style spacing	2025-11-26 15:11:15 +01:00
hpet.c	hpet: Check ACPI_COMPANION() against NULL at probe time	2026-05-23 13:47:34 +02:00
Kconfig	char: applicom: remove low-quality, unused driver	2026-05-23 13:47:34 +02:00
lp.c
Makefile	char: applicom: remove low-quality, unused driver	2026-05-23 13:47:34 +02:00
mem.c	mm/vma: eliminate mmap_action->error_hook, introduce error_override	2026-06-04 14:45:00 -07:00
misc_minor_kunit.c	initramfs_test: use test init/exit hooks to override init fs	2026-07-31 12:56:51 +02:00
misc.c	char: Use list_del_init() in misc_deregister() to reinitialize list pointer	2025-09-06 19:43:18 +02:00
nsc_gpio.c	char: remove unnecessary module_init/exit functions	2026-04-02 17:05:53 +02:00
nvram.c	char/nvram: Remove redundant nvram_mutex	2026-05-23 13:47:34 +02:00
nwbutton.c
nwbutton.h
nwflash.c
pc8736x_gpio.c
powernv-op-panel.c	char: powernv-op-panel: remove unnecessary reset of position pointer	2026-07-17 15:53:21 +02:00
ppdev.c	ppdev: prevent overflow when setting port timeout	2026-07-17 15:53:18 +02:00
ps3flash.c	Convert 'alloc_obj' family to use the new default GFP_KERNEL argument	2026-02-21 17:09:51 -08:00
random.c	random: vDSO: Remove ifdeffery	2026-03-11 15:22:49 +01:00
scx200_gpio.c
sonypi.c	sonypi: Stop setting acpi_device_name/class()	2026-07-09 16:44:07 +03:00
tlclk.c	tlclk: if sscanf() fails, fall back to 0, not random value	2026-07-17 14:53:45 +02:00
toshiba.c
ttyprintk.c
uv_mmtimer.c
virtio_console.c	virtio_console: allocate the port_buffer with the caller's gfp	2026-09-05 19:28:39 +02:00