Wind River Support Network

Description

In the Linux kernel, the following vulnerability has been resolved:EOL][EOL]f2fs: vm_unmap_ram() may be called from an invalid context[EOL][EOL]When testing F2FS with xfstests using UFS backed virtual disks the[EOL]kernel complains sometimes that f2fs_release_decomp_mem() calls[EOL]vm_unmap_ram() from an invalid context. Example trace from[EOL]f2fs/007 test:[EOL][EOL]f2fs/007 5s ...  [12:59:38][    8.902525] run fstests f2fs/007[EOL][   11.468026] BUG: sleeping function called from invalid context at mm/vmalloc.c:2978[EOL][   11.471849] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 68, name: irq/22-ufshcd[EOL][   11.475357] preempt_count: 1, expected: 0[EOL][   11.476970] RCU nest depth: 0, expected: 0[EOL][   11.478531] CPU: 0 UID: 0 PID: 68 Comm: irq/22-ufshcd Tainted: G        W           6.16.0-rc5-xfstests-ufs-g40f92e79b0aa #9 PREEMPT(none)[EOL][   11.478535] Tainted: [W]=WARN[EOL][   11.478536] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014[EOL][   11.478537] Call Trace:[EOL][   11.478543]  <TASK>[EOL][   11.478545]  dump_stack_lvl+0x4e/0x70[EOL][   11.478554]  __might_resched.cold+0xaf/0xbe[EOL][   11.478557]  vm_unmap_ram+0x21/0xb0[EOL][   11.478560]  f2fs_release_decomp_mem+0x59/0x80[EOL][   11.478563]  f2fs_free_dic+0x18/0x1a0[EOL][   11.478565]  f2fs_finish_read_bio+0xd7/0x290[EOL][   11.478570]  blk_update_request+0xec/0x3b0[EOL][   11.478574]  ? sbitmap_queue_clear+0x3b/0x60[EOL][   11.478576]  scsi_end_request+0x27/0x1a0[EOL][   11.478582]  scsi_io_completion+0x40/0x300[EOL][   11.478583]  ufshcd_mcq_poll_cqe_lock+0xa3/0xe0[EOL][   11.478588]  ufshcd_sl_intr+0x194/0x1f0[EOL][   11.478592]  ufshcd_threaded_intr+0x68/0xb0[EOL][   11.478594]  ? __pfx_irq_thread_fn+0x10/0x10[EOL][   11.478599]  irq_thread_fn+0x20/0x60[EOL][   11.478602]  ? __pfx_irq_thread_fn+0x10/0x10[EOL][   11.478603]  irq_thread+0xb9/0x180[EOL][   11.478605]  ? __pfx_irq_thread_dtor+0x10/0x10[EOL][   11.478607]  ? __pfx_irq_thread+0x10/0x10[EOL][   11.478609]  kthread+0x10a/0x230[EOL][   11.478614]  ? __pfx_kthread+0x10/0x10[EOL][   11.478615]  ret_from_fork+0x7e/0xd0[EOL][   11.478619]  ? __pfx_kthread+0x10/0x10[EOL][   11.478621]  ret_from_fork_asm+0x1a/0x30[EOL][   11.478623]  </TASK>[EOL][EOL]This patch modifies in_task() check inside f2fs_read_end_io() to also[EOL]check if interrupts are disabled. This ensures that pages are unmapped[EOL]asynchronously in an interrupt handler.

CREATE(Triage):(User=admin) [CVE-2025-39731 (https://nvd.nist.gov/vuln/detail/CVE-2025-39731)