------------[ cut here ]------------ WARNING: CPU: 1 PID: 3751 at fs/btrfs/space-info.h:122 btrfs_space_info_update_bytes_may_use+0x524/0x820 fs/btrfs/space-info.h:122 Modules linked in: CPU: 1 PID: 3751 Comm: syz-executor.3 Not tainted 6.1.0-rc6-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 RIP: 0010:btrfs_space_info_update_bytes_may_use+0x524/0x820 fs/btrfs/space-info.h:122 Code: fd e9 77 fb ff ff e8 2b 77 fb fd 4d 89 e6 48 89 de 49 f7 de 4c 89 f7 e8 6a 73 fb fd 49 39 de 0f 86 b5 fc ff ff e8 0c 77 fb fd <0f> 0b 31 db e9 af fc ff ff e8 fe 76 fb fd 48 8d 7d 18 be ff ff ff RSP: 0018:ffffc90003d77a98 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 00000000000df000 RCX: 0000000000000000 RDX: ffff88801cee8000 RSI: ffffffff8384a304 RDI: 0000000000000006 RBP: ffff88801c531800 R08: 0000000000000006 R09: 00000000000e0000 R10: 00000000000df000 R11: 0000000000000000 R12: fffffffffff20000 R13: ffff88801c531860 R14: 00000000000e0000 R15: 0000000000000008 FS: 0000000000000000(0000) GS:ffff88802c700000(0063) knlGS:0000000056d8c380 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000011e0210 CR3: 00000000740cc000 CR4: 0000000000150ee0 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:154 [inline] block_rsv_release_bytes fs/btrfs/block-rsv.c:151 [inline] btrfs_block_rsv_release+0x519/0x650 fs/btrfs/block-rsv.c:295 btrfs_release_global_block_rsv+0x26/0x2e0 fs/btrfs/block-rsv.c:463 btrfs_free_block_groups+0x958/0x1110 fs/btrfs/block-group.c:4051 close_ctree+0xd1b/0xdc7 fs/btrfs/disk-io.c:4710 generic_shutdown_super+0x158/0x410 fs/super.c:492 kill_anon_super+0x3a/0x60 fs/super.c:1086 btrfs_kill_super+0x3c/0x50 fs/btrfs/super.c:2441 deactivate_locked_super+0x98/0x160 fs/super.c:332 deactivate_super+0xb1/0xd0 fs/super.c:363 cleanup_mnt+0x2ae/0x3d0 fs/namespace.c:1186 task_work_run+0x16f/0x270 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x23c/0x250 kernel/entry/common.c:203 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:296 __do_fast_syscall_32+0x72/0xf0 arch/x86/entry/common.c:181 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x70/0x82 RIP: 0023:0xf7f69549 Code: 03 74 c0 01 10 05 03 74 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 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:00000000ffe0c49c EFLAGS: 00000296 ORIG_RAX: 0000000000000034 RAX: 0000000000000000 RBX: 00000000ffe0c540 RCX: 000000000000000a RDX: 00000000f734d000 RSI: 0000000000000000 RDI: 00000000f72a253f RBP: 00000000ffe0c540 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess): 0: 03 74 c0 01 add 0x1(%rax,%rax,8),%esi 4: 10 05 03 74 b8 01 adc %al,0x1b87403(%rip) # 0x1b8740d a: 10 06 adc %al,(%rsi) c: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 10: 10 07 adc %al,(%rdi) 12: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi 16: 10 08 adc %cl,(%rax) 18: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1c: 00 00 add %al,(%rax) 1e: 00 00 add %al,(%rax) 20: 00 51 52 add %dl,0x52(%rcx) 23: 55 push %rbp 24: 89 e5 mov %esp,%ebp 26: 0f 34 sysenter 28: cd 80 int $0x80 * 2a: 5d pop %rbp <-- trapping instruction 2b: 5a pop %rdx 2c: 59 pop %rcx 2d: c3 retq 2e: 90 nop 2f: 90 nop 30: 90 nop 31: 90 nop 32: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 39: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi