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loop3: detected capacity change from 0 to 7 ===================================================== BUG: KMSAN: uninit-value in fat_get_short_entry fs/fat/dir.c:875 [inline] BUG: KMSAN: uninit-value in fat_subdirs+0x24b/0x460 fs/fat/dir.c:939 fat_get_short_entry fs/fat/dir.c:875 [inline] fat_subdirs+0x24b/0x460 fs/fat/dir.c:939 fat_read_root+0x92f/0xac0 fs/fat/inode.c:1413 fat_fill_super+0x6e5b/0x7ff0 fs/fat/inode.c:1860 vfat_fill_super+0xa6/0xc0 fs/fat/namei_vfat.c:1051 mount_bdev+0x626/0x920 fs/super.c:1370 vfat_mount+0xc9/0xe0 fs/fat/namei_vfat.c:1058 legacy_get_tree+0x163/0x2e0 fs/fs_context.c:610 vfs_get_tree+0xd8/0x5d0 fs/super.c:1500 do_new_mount+0x7b5/0x16f0 fs/namespace.c:2988 path_mount+0x1021/0x28b0 fs/namespace.c:3318 do_mount fs/namespace.c:3331 [inline] __do_sys_mount fs/namespace.c:3539 [inline] __se_sys_mount+0x8a8/0x9d0 fs/namespace.c:3516 __ia32_sys_mount+0x157/0x1b0 fs/namespace.c:3516 do_syscall_32_irqs_on arch/x86/entry/common.c:114 [inline] __do_fast_syscall_32+0x96/0xf0 arch/x86/entry/common.c:180 do_fast_syscall_32+0x34/0x70 arch/x86/entry/common.c:205 do_SYSENTER_32+0x1b/0x20 arch/x86/entry/common.c:248 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was created at: __alloc_pages+0xbbf/0x1090 mm/page_alloc.c:5409 alloc_pages+0x8a5/0xb80 folio_alloc+0x7b/0x180 mm/mempolicy.c:2201 filemap_alloc_folio mm/filemap.c:1036 [inline] __filemap_get_folio+0xee2/0x1b20 mm/filemap.c:1951 pagecache_get_page+0xc6/0x3a0 mm/folio-compat.c:125 find_or_create_page include/linux/pagemap.h:489 [inline] grow_dev_page+0x1b6/0xe00 fs/buffer.c:949 grow_buffers fs/buffer.c:1014 [inline] __getblk_slow fs/buffer.c:1041 [inline] __getblk_gfp+0x410/0x620 fs/buffer.c:1334 __bread_gfp+0xb3/0x810 fs/buffer.c:1379 sb_bread include/linux/buffer_head.h:303 [inline] fat_fill_super+0x38d2/0x7ff0 fs/fat/inode.c:1685 vfat_fill_super+0xa6/0xc0 fs/fat/namei_vfat.c:1051 mount_bdev+0x626/0x920 fs/super.c:1370 vfat_mount+0xc9/0xe0 fs/fat/namei_vfat.c:1058 legacy_get_tree+0x163/0x2e0 fs/fs_context.c:610 vfs_get_tree+0xd8/0x5d0 fs/super.c:1500 do_new_mount+0x7b5/0x16f0 fs/namespace.c:2988 path_mount+0x1021/0x28b0 fs/namespace.c:3318 do_mount fs/namespace.c:3331 [inline] __do_sys_mount fs/namespace.c:3539 [inline] __se_sys_mount+0x8a8/0x9d0 fs/namespace.c:3516 __ia32_sys_mount+0x157/0x1b0 fs/namespace.c:3516 do_syscall_32_irqs_on arch/x86/entry/common.c:114 [inline] __do_fast_syscall_32+0x96/0xf0 arch/x86/entry/common.c:180 do_fast_syscall_32+0x34/0x70 arch/x86/entry/common.c:205 do_SYSENTER_32+0x1b/0x20 arch/x86/entry/common.c:248 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c CPU: 1 PID: 5570 Comm: syz-executor.3 Tainted: G W 5.16.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 =====================================================
Manager | Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Title |
---|---|---|---|---|---|---|---|---|---|---|---|
ci-upstream-kmsan-gce-386 | 2021/12/21 16:11 | https://github.com/google/kmsan.git master | 81c325bbf94e | a938f0b8 | .config | log | report | info | KMSAN: uninit-value in fat_subdirs |