{"id":"CVE-2024-56744","summary":"f2fs: fix to avoid potential deadlock in f2fs_record_stop_reason()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to avoid potential deadlock in f2fs_record_stop_reason()\n\nsyzbot reports deadlock issue of f2fs as below:\n\n======================================================\nWARNING: possible circular locking dependency detected\n6.12.0-rc3-syzkaller-00087-gc964ced77262 #0 Not tainted\n------------------------------------------------------\nkswapd0/79 is trying to acquire lock:\nffff888011824088 (&sbi-\u003esb_lock){++++}-{3:3}, at: f2fs_down_write fs/f2fs/f2fs.h:2199 [inline]\nffff888011824088 (&sbi-\u003esb_lock){++++}-{3:3}, at: f2fs_record_stop_reason+0x52/0x1d0 fs/f2fs/super.c:4068\n\nbut task is already holding lock:\nffff88804bd92610 (sb_internal#2){.+.+}-{0:0}, at: f2fs_evict_inode+0x662/0x15c0 fs/f2fs/inode.c:842\n\nwhich lock already depends on the new lock.\n\nthe existing dependency chain (in reverse order) is:\n\n-\u003e #2 (sb_internal#2){.+.+}-{0:0}:\n       lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825\n       percpu_down_read include/linux/percpu-rwsem.h:51 [inline]\n       __sb_start_write include/linux/fs.h:1716 [inline]\n       sb_start_intwrite+0x4d/0x1c0 include/linux/fs.h:1899\n       f2fs_evict_inode+0x662/0x15c0 fs/f2fs/inode.c:842\n       evict+0x4e8/0x9b0 fs/inode.c:725\n       f2fs_evict_inode+0x1a4/0x15c0 fs/f2fs/inode.c:807\n       evict+0x4e8/0x9b0 fs/inode.c:725\n       dispose_list fs/inode.c:774 [inline]\n       prune_icache_sb+0x239/0x2f0 fs/inode.c:963\n       super_cache_scan+0x38c/0x4b0 fs/super.c:223\n       do_shrink_slab+0x701/0x1160 mm/shrinker.c:435\n       shrink_slab+0x1093/0x14d0 mm/shrinker.c:662\n       shrink_one+0x43b/0x850 mm/vmscan.c:4818\n       shrink_many mm/vmscan.c:4879 [inline]\n       lru_gen_shrink_node mm/vmscan.c:4957 [inline]\n       shrink_node+0x3799/0x3de0 mm/vmscan.c:5937\n       kswapd_shrink_node mm/vmscan.c:6765 [inline]\n       balance_pgdat mm/vmscan.c:6957 [inline]\n       kswapd+0x1ca3/0x3700 mm/vmscan.c:7226\n       kthread+0x2f0/0x390 kernel/kthread.c:389\n       ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147\n       ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244\n\n-\u003e #1 (fs_reclaim){+.+.}-{0:0}:\n       lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825\n       __fs_reclaim_acquire mm/page_alloc.c:3834 [inline]\n       fs_reclaim_acquire+0x88/0x130 mm/page_alloc.c:3848\n       might_alloc include/linux/sched/mm.h:318 [inline]\n       prepare_alloc_pages+0x147/0x5b0 mm/page_alloc.c:4493\n       __alloc_pages_noprof+0x16f/0x710 mm/page_alloc.c:4722\n       alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265\n       alloc_pages_noprof mm/mempolicy.c:2345 [inline]\n       folio_alloc_noprof+0x128/0x180 mm/mempolicy.c:2352\n       filemap_alloc_folio_noprof+0xdf/0x500 mm/filemap.c:1010\n       do_read_cache_folio+0x2eb/0x850 mm/filemap.c:3787\n       read_mapping_folio include/linux/pagemap.h:1011 [inline]\n       f2fs_commit_super+0x3c0/0x7d0 fs/f2fs/super.c:4032\n       f2fs_record_stop_reason+0x13b/0x1d0 fs/f2fs/super.c:4079\n       f2fs_handle_critical_error+0x2ac/0x5c0 fs/f2fs/super.c:4174\n       f2fs_write_inode+0x35f/0x4d0 fs/f2fs/inode.c:785\n       write_inode fs/fs-writeback.c:1503 [inline]\n       __writeback_single_inode+0x711/0x10d0 fs/fs-writeback.c:1723\n       writeback_single_inode+0x1f3/0x660 fs/fs-writeback.c:1779\n       sync_inode_metadata+0xc4/0x120 fs/fs-writeback.c:2849\n       f2fs_release_file+0xa8/0x100 fs/f2fs/file.c:1941\n       __fput+0x23f/0x880 fs/file_table.c:431\n       task_work_run+0x24f/0x310 kernel/task_work.c:228\n       resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]\n       exit_to_user_mode_loop kernel/entry/common.c:114 [inline]\n       exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]\n       __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]\n       syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218\n       do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89\n       entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\n---truncated---","modified":"2026-05-18T05:57:20.932455922Z","published":"2024-12-29T11:30:11.816Z","related":["USN-7276-1","USN-7277-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/56xxx/CVE-2024-56744.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/1539a088b108996bcdaddb7775070b5163b14233"},{"type":"WEB","url":"https://git.kernel.org/stable/c/801092a2c9c251ef6a8678fcb8fcc1220474a697"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ecf4e6782b01fd578b565b3dd2be7bb0ac91082e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f10a890308a7cd8794e21f646f09827c6cb4bf5d"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/56xxx/CVE-2024-56744.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-56744"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"b62e71be2110d8b52bf5faf3c3ed7ca1a0c113a5"},{"fixed":"ecf4e6782b01fd578b565b3dd2be7bb0ac91082e"},{"fixed":"1539a088b108996bcdaddb7775070b5163b14233"},{"fixed":"801092a2c9c251ef6a8678fcb8fcc1220474a697"},{"fixed":"f10a890308a7cd8794e21f646f09827c6cb4bf5d"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0"},{"last_affected":"ed1d478bf838820201f3fb67a1748fdf15954ea4"}]}],"versions":["v6.4.3","v6.4","v6.4.2","v6.4-rc7","v6.4-rc1","v6.4.1","v6.4-rc6","v6.4-rc5","v6.4-rc3","v6.4-rc4","v6.4-rc2","v6.3","v6.3-rc1","v6.3-rc7","v6.3-rc2","v6.3-rc3","v6.3-rc5","v6.3-rc6","v6.3-rc4","v6.2-rc6","v6.2-rc1","v6.2","v6.2-rc2","v6.2-rc8","v6.2-rc5","v6.2-rc4","v6.2-rc7","v6.2-rc3","v6.1-rc1","v6.1","v6.1-rc8","v6.1-rc3","v6.1-rc6","v6.1-rc7","v6.1-rc4","v6.1-rc2","v6.1-rc5","v6.0-rc1","v6.0","v6.0-rc7","v6.0-rc3","v6.0-rc2","v6.0-rc6","v6.0-rc4","v6.0-rc5","v5.19","v5.19-rc1","v5.19-rc5","v5.19-rc8","v5.19-rc6","v5.18","v5.19-rc2","v5.19-rc7","v5.19-rc3","v5.19-rc4","v5.18-rc1","v5.18-rc7","v5.18-rc2","v5.18-rc5","v5.17","v5.18-rc4","v5.18-rc3","v5.18-rc6","v5.17-rc6","v5.17-rc4","v5.17-rc8","v5.17-rc7","v5.17-rc1","v5.17-rc3","v5.17-rc2","v5.17-rc5","v5.16","v5.16-rc1","v5.16-rc8","v5.16-rc5","v5.16-rc6","v5.16-rc7","v5.16-rc3","v5.16-rc2","v5.16-rc4","v5.15","v5.15-rc2","v5.15-rc1","v5.15-rc4","v5.15-rc7","v5.15-rc3","v5.15-rc5","v5.15-rc6","v5.14","v5.14-rc3","v5.14-rc1","v5.14-rc2","v5.14-rc7","v5.14-rc6","v5.13-rc1","v5.14-rc5","v5.14-rc4","v5.13","v5.13-rc6","v5.13-rc7","v5.13-rc3","v5.13-rc2","v5.13-rc4","v5.13-rc5","v5.12","v5.12-rc2","v5.12-rc1-dontuse","v5.12-rc1","v5.12-rc8","v5.12-rc3","v5.12-rc7","v5.12-rc5","v5.12-rc6","v5.12-rc4","v5.10","v5.11","v5.11-rc3","v5.11-rc7","v5.11-rc6","v5.11-rc5","v5.11-rc1","v5.11-rc4","v5.11-rc2","v5.10-rc1","v5.10-rc7","v5.10-rc4","v5.10-rc3","v5.10-rc6","v5.9","v5.10-rc2","v5.10-rc5","v5.9-rc1","v5.9-rc7","v5.9-rc8","v5.9-rc6","v5.9-rc4","v5.9-rc5","v5.9-rc3","v5.9-rc2","v5.8","v5.7","v5.8-rc2","v5.8-rc1","v5.8-rc7","v5.8-rc5","v5.8-rc3","v5.8-rc4","v5.8-rc6","v5.7-rc4","v5.7-rc7","v5.7-rc1","v5.7-rc3","v5.7-rc2","v5.7-rc5","v5.7-rc6","v5.6","v5.6-rc1","v5.6-rc7","v5.6-rc6","v5.6-rc3","v5.6-rc4","v5.6-rc2","v5.6-rc5","v5.5","v5.5-rc5","v5.5-rc7","v5.5-rc2","v5.5-rc1","v5.4","v5.5-rc4","v5.5-rc3","v5.5-rc6","v5.4-rc1","v5.4-rc6","v5.4-rc3","v5.4-rc4","v5.4-rc8","v5.4-rc7","v5.4-rc5","v5.3","v5.4-rc2","v5.3-rc5","v5.3-rc1","v5.3-rc2","v5.3-rc3","v5.3-rc8","v5.3-rc7","v5.3-rc4","v5.2","v5.3-rc6","v5.2-rc2","v5.2-rc7","v5.2-rc4","v5.2-rc1","v5.2-rc5","v5.2-rc6","v5.2-rc3","v5.1","v5.0-rc8","v5.1-rc7","v5.1-rc1","v5.1-rc6","v5.1-rc5","v5.0","v5.1-rc3","v5.1-rc2","v5.1-rc4","v5.0-rc1","v5.0-rc4","v5.0-rc3","v5.0-rc6","v5.0-rc7","v5.0-rc2","v5.0-rc5","v4.20-rc1","v4.19","v4.20","v4.20-rc7","v4.20-rc5","v4.20-rc6","v4.20-rc4","v4.20-rc2","v4.20-rc3","v4.19-rc2","v4.19-rc8","v4.19-rc4","v4.19-rc1","v4.19-rc7","v4.19-rc6","v4.19-rc5","v4.19-rc3","v4.18","v4.18-rc1","v4.18-rc8","v4.18-rc2","v4.18-rc5","v4.18-rc6","v4.18-rc7","v4.17","v4.18-rc3","v4.18-rc4","v4.17-rc1","v4.17-rc2","v4.17-rc7","v4.17-rc3","v4.17-rc4","v4.16","v4.17-rc6","v4.17-rc5","v4.16-rc7","v4.16-rc4","v4.16-rc1","v4.16-rc2","v4.16-rc5","v4.16-rc3","v4.16-rc6","v4.14","v4.15","v4.15-rc1","v4.15-rc4","v4.15-rc9","v4.15-rc8","v4.15-rc7","v4.15-rc3","v4.15-rc2","v4.15-rc5","v4.15-rc6","v4.14-rc1","v4.14-rc7","v4.14-rc3","v4.13","v4.14-rc8","v4.14-rc4","v4.14-rc6","v4.14-rc2","v4.14-rc5","v4.13-rc2","v4.13-rc1","v4.13-rc3","v4.13-rc7","v4.13-rc4","v4.13-rc5","v4.13-rc6","v4.12-rc1","v4.12","v4.12-rc5","v4.12-rc7","v4.12-rc6","v4.12-rc4","v4.12-rc2","v4.12-rc3","v4.11","v4.11-rc1","v4.11-rc6","v4.11-rc8","v4.11-rc7","v4.11-rc3","v4.11-rc5","v4.11-rc2","v4.11-rc4","v4.10","v4.9","v4.10-rc8","v4.10-rc3","v4.10-rc1","v4.10-rc7","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