list_add double add: new=ffffea0001115dc8, prev=ffffffff9a437948, next=ffffea0001115dc8. ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:37! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 51 Comm: kworker/u4:4 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 Workqueue: btrfs-delalloc btrfs_work_helper RIP: 0010:__list_add_valid_or_report+0xa5/0x130 lib/list_debug.c:35 Code: 74 12 b0 01 5b 41 5c 41 5d 41 5e 41 5f 5d e9 52 a2 f8 06 cc 48 c7 c7 e0 cd 27 8c 4c 89 fe 4c 89 f2 48 89 d9 e8 fc 93 6d fc 90 <0f> 0b 48 c7 c7 c0 cb 27 8c e8 ed 93 6d fc 90 0f 0b 48 c7 c7 80 cc RSP: 0018:ffffc90000aef820 EFLAGS: 00010246 RAX: 0000000000000058 RBX: ffffea0001115dc8 RCX: 73daa393f1a8b600 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 1ffffd4000222bba R08: ffffc90000aef5a7 R09: 1ffff9200015deb4 R10: dffffc0000000000 R11: fffff5200015deb5 R12: 1ffffffff3486f29 R13: dffffc0000000000 R14: ffffffff9a437948 R15: ffffea0001115dc8 FS: 0000000000000000(0000) GS:ffff88808ca58000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5722bd8008 CR3: 0000000042656000 CR4: 0000000000352ef0 Call Trace: __list_add_valid include/linux/list.h:96 [inline] __list_add include/linux/list.h:158 [inline] list_add include/linux/list.h:177 [inline] btrfs_free_compr_folio+0x1e1/0x340 fs/btrfs/compression.c:218 cleanup_compressed_bio fs/btrfs/compression.h:150 [inline] btrfs_compress_bio+0x35a/0x6b0 fs/btrfs/compression.c:1047 compress_file_range+0x8df/0x19b0 fs/btrfs/inode.c:1023 btrfs_work_helper+0x38c/0xc80 fs/btrfs/async-thread.c:312 process_one_work kernel/workqueue.c:3275 [inline] process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358 worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__list_add_valid_or_report+0xa5/0x130 lib/list_debug.c:35 Code: 74 12 b0 01 5b 41 5c 41 5d 41 5e 41 5f 5d e9 52 a2 f8 06 cc 48 c7 c7 e0 cd 27 8c 4c 89 fe 4c 89 f2 48 89 d9 e8 fc 93 6d fc 90 <0f> 0b 48 c7 c7 c0 cb 27 8c e8 ed 93 6d fc 90 0f 0b 48 c7 c7 80 cc RSP: 0018:ffffc90000aef820 EFLAGS: 00010246 RAX: 0000000000000058 RBX: ffffea0001115dc8 RCX: 73daa393f1a8b600 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 1ffffd4000222bba R08: ffffc90000aef5a7 R09: 1ffff9200015deb4 R10: dffffc0000000000 R11: fffff5200015deb5 R12: 1ffffffff3486f29 R13: dffffc0000000000 R14: ffffffff9a437948 R15: ffffea0001115dc8 FS: 0000000000000000(0000) GS:ffff88808ca58000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5722bd8008 CR3: 0000000042656000 CR4: 0000000000352ef0