WARNING in btrfs_commit

Kernel	Title	Rank 🛈	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	WARNING in btrfs_commit_transaction btrfs	-1	C	inconclusive	done	3	940d	1034d	22/29	fixed on 2023/02/24 13:50
linux-4.19	WARNING in btrfs_commit_transaction (2)	-1				1	997d	997d	0/1	auto-obsoleted due to no activity on 2023/04/08 10:50
linux-4.14	WARNING in btrfs_commit_transaction btrfs	-1	C			2	916d	1288d	0/1	upstream: reported C repro on 2022/02/21 07:21
linux-6.1	WARNING in btrfs_commit_transaction origin:upstream	-1	C			18	13d	691d	0/3	upstream: reported C repro on 2023/10/11 08:58
linux-6.6	WARNING in btrfs_commit_transaction	-1				2	68d	68d	0/2	upstream: reported on 2025/06/24 18:47
linux-5.15	WARNING in btrfs_commit_transaction origin:lts-only	-1	C		done	76	2d06h	868d	0/3	upstream: reported C repro on 2023/04/17 01:21
upstream	WARNING in btrfs_commit_transaction (2) btrfs	-1	C	done		1029	17h41m	879d	0/29	upstream: reported C repro on 2023/04/06 02:24

sysfs_warn_dup.cold+0x1c/0x29 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x228/0x280 fs/sysfs/dir.c:63 gfs2: fsid=syz:syz: error -17 adding sysfs files create_dir lib/kobject.c:88 [inline] kobject_add_internal+0x2a5/0x9c0 lib/kobject.c:247 kobject_add_varg lib/kobject.c:382 [inline] kobject_init_and_add+0x101/0x160 lib/kobject.c:453 WARNING: CPU: 1 PID: 25278 at fs/fs-writeback.c:2390 __writeback_inodes_sb_nr.cold+0x11/0x18 fs/fs-writeback.c:2390 Kernel panic - not syncing: panic_on_warn set ... gfs2_sys_fs_add+0x18e/0x440 fs/gfs2/sys.c:659 fill_super+0x1240/0x2550 fs/gfs2/ops_fstype.c:1103 gfs2_mount+0x4c0/0x5a0 fs/gfs2/ops_fstype.c:1316 mount_fs+0xa3/0x310 fs/super.c:1261 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2469 [inline] do_mount+0x113c/0x2f10 fs/namespace.c:2799 ksys_mount+0xcf/0x130 fs/namespace.c:3015 __do_sys_mount fs/namespace.c:3029 [inline] __se_sys_mount fs/namespace.c:3026 [inline] __x64_sys_mount+0xba/0x150 fs/namespace.c:3026 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x46797a Code: 48 c7 c2 bc ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f11d34a9fa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 000000000046797a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f11d34aa000 RBP: 00007f11d34aa040 R08: 00007f11d34aa040 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000 R13: 0000000020000100 R14: 00007f11d34aa000 R15: 0000000020000180 CPU: 1 PID: 25278 Comm: btrfs-transacti Not tainted 4.19.184-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 gfs2: fsid=syz:syz.0: jid=0: Looking at journal... Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 panic+0x26a/0x50e kernel/panic.c:186 __warn.cold+0x20/0x5a kernel/panic.c:541 report_bug+0x262/0x2b0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] fixup_bug arch/x86/kernel/traps.c:173 [inline] do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296 kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory. gfs2: fsid=syz:syz: error -17 adding sysfs files gfs2: fsid=syz:syz.0: jid=0: Done invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038 RIP: 0010:__writeback_inodes_sb_nr.cold+0x11/0x18 fs/fs-writeback.c:2390 Code: bb e8 9d 02 6f f9 48 c7 c7 a0 f3 74 88 e8 76 ea fe ff 0f 0b e9 6c 50 ba f9 e8 85 02 6f f9 48 c7 c7 a0 f3 74 88 e8 5e ea fe ff <0f> 0b e9 c0 72 ba f9 e8 6d 02 6f f9 48 c7 c7 a0 f3 74 88 e8 46 ea gfs2: fsid=syz:syz.0: first mount done, others may mount RSP: 0018:ffff88801f58fc48 EFLAGS: 00010286 RAX: 0000000000000024 RBX: 1ffff11003eb1f8b RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff814ddd51 RDI: ffffed1003eb1f7b RBP: ffff888043b80c00 R08: 0000000000000024 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000006400 R13: ffff88803e6da100 R14: ffff888043b80d30 R15: ffff88801f58fc88 btrfs_start_delalloc_flush fs/btrfs/transaction.c:1925 [inline] btrfs_commit_transaction+0x1bb1/0x2480 fs/btrfs/transaction.c:2076 transaction_kthread+0x385/0x490 fs/btrfs/disk-io.c:1794 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Kernel Offset: disabled Rebooting in 86400 seconds..