------------[ cut here ]------------ WARNING: CPU: 2 PID: 5227 at fs/btrfs/space-info.h:199 btrfs_space_info_update_bytes_may_use fs/btrfs/space-info.h:199 [inline] WARNING: CPU: 2 PID: 5227 at fs/btrfs/space-info.h:199 btrfs_space_info_update_bytes_may_use+0x44d/0x5a0 fs/btrfs/space-info.h:199 Modules linked in: CPU: 2 PID: 5227 Comm: syz-executor.3 Not tainted 6.8.0-rc6-syzkaller-00194-g17ba56605bfd #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:btrfs_space_info_update_bytes_may_use fs/btrfs/space-info.h:199 [inline] RIP: 0010:btrfs_space_info_update_bytes_may_use+0x44d/0x5a0 fs/btrfs/space-info.h:199 Code: e9 65 fc ff ff e8 63 a8 e8 fd 49 89 ee 4c 89 e6 49 f7 de 4c 89 f7 e8 a2 a2 e8 fd 4d 39 f4 0f 83 78 fd ff ff e8 44 a8 e8 fd 90 <0f> 0b 90 31 ed e9 70 fd ff ff e8 34 a8 e8 fd 48 8d 7b 18 be ff ff RSP: 0018:ffffc90003c57ac0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff888047013000 RCX: ffffffff83a33c0e RDX: ffff888018c18000 RSI: ffffffff83a33c1c RDI: 0000000000000006 RBP: ffffffffffea0000 R08: 0000000000000006 R09: 0000000000160000 R10: 000000000015f000 R11: 0000000000000001 R12: 000000000015f000 R13: ffff888047013060 R14: 0000000000160000 R15: 0000000000000005 FS: 0000000000000000(0000) GS:ffff88802c400000(0063) knlGS:00000000582bb400 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000c0165cd000 CR3: 000000004a650000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: btrfs_space_info_free_bytes_may_use fs/btrfs/space-info.h:231 [inline] block_rsv_release_bytes fs/btrfs/block-rsv.c:154 [inline] btrfs_block_rsv_release+0x5ac/0x6c0 fs/btrfs/block-rsv.c:295 btrfs_release_global_block_rsv+0x26/0x2f0 fs/btrfs/block-rsv.c:451 btrfs_free_block_groups+0xbbc/0x13e0 fs/btrfs/block-group.c:4414 close_ctree+0xa51/0xf90 fs/btrfs/disk-io.c:4384 generic_shutdown_super+0x159/0x3d0 fs/super.c:641 kill_anon_super+0x3a/0x60 fs/super.c:1225 btrfs_kill_super+0x3b/0x50 fs/btrfs/super.c:2093 deactivate_locked_super+0xbe/0x1a0 fs/super.c:472 deactivate_super+0xde/0x100 fs/super.c:505 cleanup_mnt+0x222/0x450 fs/namespace.c:1267 task_work_run+0x14f/0x250 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:108 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline] syscall_exit_to_user_mode+0x278/0x2a0 kernel/entry/common.c:212 __do_fast_syscall_32+0x8c/0x120 arch/x86/entry/common.c:324 do_fast_syscall_32+0x33/0x80 arch/x86/entry/common.c:346 entry_SYSENTER_compat_after_hwframe+0x7c/0x86 RIP: 0023:0xf72d9579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000ffe33f28 EFLAGS: 00000292 ORIG_RAX: 0000000000000034 RAX: 0000000000000000 RBX: 00000000ffe33fd0 RCX: 000000000000000a RDX: 00000000f742fff4 RSI: 00000000f73803bd RDI: 00000000ffe35074 RBP: 00000000ffe33fd0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 10 06 adc %al,(%rsi) 2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 6: 10 07 adc %al,(%rdi) 8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi c: 10 08 adc %cl,(%rax) e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1e: 00 51 52 add %dl,0x52(%rcx) 21: 55 push %rbp 22: 89 e5 mov %esp,%ebp 24: 0f 34 sysenter 26: cd 80 int $0x80 * 28: 5d pop %rbp <-- trapping instruction 29: 5a pop %rdx 2a: 59 pop %rcx 2b: c3 ret 2c: 90 nop 2d: 90 nop 2e: 90 nop 2f: 90 nop 30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi