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Message-ID: <000000000000a89b3d060e876153@google.com> Date: Tue, 09 Jan 2024 10:21:22 -0800 From: syzbot <syzbot+82373528417bbb67ec62@...kaller.appspotmail.com> To: agruenba@...hat.com, gfs2@...ts.linux.dev, linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com Subject: [syzbot] [gfs2?] KMSAN: uninit-value in inode_go_dump (3) Hello, syzbot found the following issue on: HEAD commit: 2639772a11c8 get_maintainer: remove stray punctuation when.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=17090a91e80000 kernel config: https://syzkaller.appspot.com/x/.config?x=d4130d4bb32c48ef dashboard link: https://syzkaller.appspot.com/bug?extid=82373528417bbb67ec62 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: i386 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/8ce611d4ffb7/disk-2639772a.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/b5d39093f7c1/vmlinux-2639772a.xz kernel image: https://storage.googleapis.com/syzbot-assets/dfc8359e9375/bzImage-2639772a.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+82373528417bbb67ec62@...kaller.appspotmail.com gfs2: fsid=syz:syz.0: G: s:SH n:2/13 f:qobnN t:SH d:EX/0 a:0 v:0 r:3 m:20 p:1 gfs2: fsid=syz:syz.0: H: s:SH f:eEcH e:0 p:0 [(none)] init_inodes+0x125/0x510 fs/gfs2/ops_fstype.c:884 ===================================================== BUG: KMSAN: uninit-value in inode_go_dump+0x471/0x4b0 fs/gfs2/glops.c:549 inode_go_dump+0x471/0x4b0 fs/gfs2/glops.c:549 gfs2_dump_glock+0x2219/0x2340 fs/gfs2/glock.c:2373 gfs2_consist_inode_i+0x19f/0x220 fs/gfs2/util.c:456 gfs2_dinode_in fs/gfs2/glops.c:470 [inline] gfs2_inode_refresh+0xf42/0x1550 fs/gfs2/glops.c:490 inode_go_instantiate+0x6e/0xc0 fs/gfs2/glops.c:509 gfs2_instantiate+0x26f/0x4b0 fs/gfs2/glock.c:454 gfs2_glock_holder_ready fs/gfs2/glock.c:1319 [inline] gfs2_glock_wait+0x2a4/0x3e0 fs/gfs2/glock.c:1339 gfs2_glock_nq+0x1d9f/0x2a00 fs/gfs2/glock.c:1579 gfs2_glock_nq_init fs/gfs2/glock.h:237 [inline] init_journal+0x1208/0x38b0 fs/gfs2/ops_fstype.c:790 init_inodes+0x125/0x510 fs/gfs2/ops_fstype.c:884 gfs2_fill_super+0x3c05/0x42a0 fs/gfs2/ops_fstype.c:1263 get_tree_bdev+0x6b5/0x8f0 fs/super.c:1598 gfs2_get_tree+0x5c/0x340 fs/gfs2/ops_fstype.c:1341 vfs_get_tree+0xa5/0x520 fs/super.c:1771 do_new_mount+0x68d/0x1550 fs/namespace.c:3337 path_mount+0x73d/0x1f20 fs/namespace.c:3664 do_mount fs/namespace.c:3677 [inline] __do_sys_mount fs/namespace.c:3886 [inline] __se_sys_mount+0x725/0x810 fs/namespace.c:3863 __ia32_sys_mount+0xe3/0x150 fs/namespace.c:3863 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:321 do_fast_syscall_32+0x37/0x70 arch/x86/entry/common.c:346 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:384 entry_SYSENTER_compat_after_hwframe+0x70/0x7a Uninit was created at: __alloc_pages+0x9a4/0xe00 mm/page_alloc.c:4591 alloc_pages_mpol+0x62b/0x9d0 mm/mempolicy.c:2133 alloc_pages+0x1be/0x1e0 mm/mempolicy.c:2204 alloc_slab_page mm/slub.c:1870 [inline] allocate_slab mm/slub.c:2017 [inline] new_slab+0x421/0x1570 mm/slub.c:2070 ___slab_alloc+0x13db/0x33d0 mm/slub.c:3223 __slab_alloc mm/slub.c:3322 [inline] __slab_alloc_node mm/slub.c:3375 [inline] slab_alloc_node mm/slub.c:3468 [inline] slab_alloc mm/slub.c:3486 [inline] __kmem_cache_alloc_lru mm/slub.c:3493 [inline] kmem_cache_alloc_lru+0x552/0x970 mm/slub.c:3509 alloc_inode_sb include/linux/fs.h:2937 [inline] gfs2_alloc_inode+0x66/0x210 fs/gfs2/super.c:1554 alloc_inode+0x83/0x440 fs/inode.c:261 iget5_locked+0xa9/0x210 fs/inode.c:1271 gfs2_inode_lookup+0xbe/0x1440 fs/gfs2/inode.c:124 gfs2_lookup_root fs/gfs2/ops_fstype.c:460 [inline] init_sb+0xe62/0x1880 fs/gfs2/ops_fstype.c:527 gfs2_fill_super+0x327e/0x42a0 fs/gfs2/ops_fstype.c:1230 get_tree_bdev+0x6b5/0x8f0 fs/super.c:1598 gfs2_get_tree+0x5c/0x340 fs/gfs2/ops_fstype.c:1341 vfs_get_tree+0xa5/0x520 fs/super.c:1771 do_new_mount+0x68d/0x1550 fs/namespace.c:3337 path_mount+0x73d/0x1f20 fs/namespace.c:3664 do_mount fs/namespace.c:3677 [inline] __do_sys_mount fs/namespace.c:3886 [inline] __se_sys_mount+0x725/0x810 fs/namespace.c:3863 __ia32_sys_mount+0xe3/0x150 fs/namespace.c:3863 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:321 do_fast_syscall_32+0x37/0x70 arch/x86/entry/common.c:346 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:384 entry_SYSENTER_compat_after_hwframe+0x70/0x7a CPU: 0 PID: 6179 Comm: syz-executor.5 Not tainted 6.7.0-rc7-syzkaller-00051-g2639772a11c8 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 ===================================================== --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@...glegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
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