loop0: detected capacity change from 0 to 32768 BTRFS: device fsid 395ef67a-297e-477c-816d-cd80a5b93e5d devid 1 transid 8 /dev/loop0 (7:0) scanned by syz.0.0 (5329) BTRFS info (device loop0): first mount of filesystem 395ef67a-297e-477c-816d-cd80a5b93e5d BTRFS info (device loop0): using sha256 checksum algorithm BTRFS info (device loop0): enabling ssd optimizations BTRFS info (device loop0): turning on async discard BTRFS info (device loop0): enabling free space tree BTRFS info (device loop0): setting incompat feature flag for SIMPLE_QUOTA (0x10000) BTRFS warning (device loop0): to be deleted qgroup 0/5 has non-zero numbers, data 0 meta prealloc 0 meta pertrans 16384 ------------[ cut here ]------------ BTRFS: Transaction aborted (error -2) WARNING: fs/btrfs/extent-tree.c:3181 at do_free_extent_accounting fs/btrfs/extent-tree.c:3181 [inline], CPU#0: syz.0.0/5329 WARNING: fs/btrfs/extent-tree.c:3181 at __btrfs_free_extent+0x3c6e/0x4570 fs/btrfs/extent-tree.c:3554, CPU#0: syz.0.0/5329 Modules linked in: CPU: 0 UID: 0 PID: 5329 Comm: syz.0.0 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 RIP: 0010:do_free_extent_accounting fs/btrfs/extent-tree.c:3181 [inline] RIP: 0010:__btrfs_free_extent+0x3c70/0x4570 fs/btrfs/extent-tree.c:3554 Code: e9 c8 05 00 00 e8 30 58 c0 fd 84 c0 0f 84 f2 00 00 00 e8 53 4e db fd e9 b1 05 00 00 e8 49 4e db fd 48 8d 3d e2 a1 4f 0c 89 de <67> 48 0f b9 3a e9 c1 e0 ff ff e8 31 4e db fd eb 05 e8 2a 4e db fd RSP: 0018:ffffc9000e0a7480 EFLAGS: 00010287 RAX: ffffffff83ea85e7 RBX: 00000000fffffffe RCX: 0000000000100000 RDX: ffffc9000ef1a000 RSI: 00000000fffffffe RDI: ffffffff903a27d0 RBP: ffffc9000e0a7630 R08: ffff88803eb38000 R09: 0000000000000003 R10: 00000000fffffffb R11: 0000000000000002 R12: dffffc0000000000 R13: ffff8880479162f0 R14: 0000000000000000 R15: ffff888043144001 FS: 00007fbdd3ab16c0(0000) GS:ffff88808c87c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f86517be120 CR3: 0000000012410000 CR4: 0000000000352ef0 Call Trace: run_delayed_tree_ref fs/btrfs/extent-tree.c:1824 [inline] run_one_delayed_ref fs/btrfs/extent-tree.c:1851 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:2058 [inline] __btrfs_run_delayed_refs+0x1870/0x4710 fs/btrfs/extent-tree.c:2133 btrfs_run_delayed_refs+0xe6/0x3b0 fs/btrfs/extent-tree.c:2245 btrfs_commit_transaction+0xf91/0x2fc0 fs/btrfs/transaction.c:2480 btrfs_ioctl_set_fslabel+0x375/0x4f0 fs/btrfs/ioctl.c:4080 btrfs_ioctl+0x3a0/0xd10 fs/btrfs/ioctl.c:5157 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fbdd2b9ce59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fbdd3ab0fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fbdd2e15fa0 RCX: 00007fbdd2b9ce59 RDX: 00002000000001c0 RSI: 0000000041009432 RDI: 0000000000000005 RBP: 00007fbdd2c32d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fbdd2e16038 R14: 00007fbdd2e15fa0 R15: 00007ffc4c7b2008 ---------------- Code disassembly (best guess): 0: e9 c8 05 00 00 jmp 0x5cd 5: e8 30 58 c0 fd call 0xfdc0583a a: 84 c0 test %al,%al c: 0f 84 f2 00 00 00 je 0x104 12: e8 53 4e db fd call 0xfddb4e6a 17: e9 b1 05 00 00 jmp 0x5cd 1c: e8 49 4e db fd call 0xfddb4e6a 21: 48 8d 3d e2 a1 4f 0c lea 0xc4fa1e2(%rip),%rdi # 0xc4fa20a 28: 89 de mov %ebx,%esi * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: e9 c1 e0 ff ff jmp 0xffffe0f5 34: e8 31 4e db fd call 0xfddb4e6a 39: eb 05 jmp 0x40 3b: e8 2a 4e db fd call 0xfddb4e6a