------------[ cut here ]------------ kernel BUG at fs/btrfs/inode.c:977! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 1 UID: 0 PID: 752 Comm: kworker/u8:6 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 Workqueue: btrfs-delalloc btrfs_work_helper RIP: 0010:compress_file_range+0x1e27/0x2430 fs/btrfs/inode.c:977 Code: af 0c 01 e8 db 39 8a fd e9 55 fd ff ff e8 51 fc ae fd 48 c7 c6 20 1d 28 8c 48 89 df e8 a2 ab ff fd 90 0f 0b e8 3a fc ae fd 90 <0f> 0b e8 32 fc ae fd 48 8b 54 24 78 48 b8 00 00 00 00 00 fc ff df RSP: 0018:ffffc9000454fac0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000020000 RCX: ffffffff845b3929 RDX: ffff8880272e9f00 RSI: ffffffff845b42e6 RDI: ffff8880272e9f00 RBP: 00000000fffffff4 R08: 0000000000000005 R09: 0000000000000000 R10: 00000000fffffff4 R11: 0000000000000000 R12: 000000000001ffff R13: 0000000000000fea R14: ffff888068d78000 R15: 0000000000000016 FS: 0000000000000000(0000) GS:ffff888123ede000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c3ea6fb CR3: 000000001cbb3000 CR4: 0000000000350ef0 Call Trace: btrfs_work_helper+0x214/0xc70 fs/btrfs/async-thread.c:312 process_one_work+0xa23/0x1940 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x5ef/0xe50 kernel/workqueue.c:3486 kthread+0x370/0x450 kernel/kthread.c:436 ret_from_fork+0x72b/0xd50 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:compress_file_range+0x1e27/0x2430 fs/btrfs/inode.c:977 Code: af 0c 01 e8 db 39 8a fd e9 55 fd ff ff e8 51 fc ae fd 48 c7 c6 20 1d 28 8c 48 89 df e8 a2 ab ff fd 90 0f 0b e8 3a fc ae fd 90 <0f> 0b e8 32 fc ae fd 48 8b 54 24 78 48 b8 00 00 00 00 00 fc ff df RSP: 0018:ffffc9000454fac0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000020000 RCX: ffffffff845b3929 RDX: ffff8880272e9f00 RSI: ffffffff845b42e6 RDI: ffff8880272e9f00 RBP: 00000000fffffff4 R08: 0000000000000005 R09: 0000000000000000 R10: 00000000fffffff4 R11: 0000000000000000 R12: 000000000001ffff R13: 0000000000000fea R14: ffff888068d78000 R15: 0000000000000016 FS: 0000000000000000(0000) GS:ffff888123dde000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f16bf558fb0 CR3: 000000007c548000 CR4: 0000000000350ef0