syzbot


WARNING in btrfs_space_info_update_bytes_may_use

Status: upstream: reported C repro on 2023/04/07 20:54
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+49f99b4e95c9e4a5516d@syzkaller.appspotmail.com
First crash: 416d, last: 87d
Fix bisection: failed (error log, bisect log)
  
Bug presence (1)
Date Name Commit Repro Result
2023/05/07 upstream (ToT) fc4354c6e5c2 C [report] WARNING in btrfs_space_info_update_bytes_may_use
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in btrfs_space_info_update_bytes_may_use btrfs C done 2988 3d10h 574d 0/26 upstream: reported C repro on 2022/10/31 00:15
linux-6.1 WARNING in btrfs_space_info_update_bytes_may_use origin:upstream C 167 8d10h 436d 0/3 upstream: reported C repro on 2023/03/18 05:35

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 3535 at fs/btrfs/space-info.h:110 btrfs_space_info_update_bytes_may_use+0x294/0x5c0
Modules linked in:
CPU: 0 PID: 3535 Comm: syz-executor303 Not tainted 5.15.109-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
RIP: 0010:btrfs_space_info_update_bytes_may_use+0x294/0x5c0 fs/btrfs/space-info.h:110
Code: 25 00 00 74 08 4c 89 ff e8 59 84 49 fe 49 8b 1f 48 89 df 48 8b 6c 24 18 48 89 ee e8 f6 2b 00 fe 48 39 eb 73 14 e8 0c 2a 00 fe <0f> 0b 45 31 f6 43 80 7c 25 00 00 75 ac eb b2 e8 f8 29 00 fe 43 80
RSP: 0018:ffffc90002d1fb40 EFLAGS: 00010293
RAX: ffffffff837fb474 RBX: 00000000000cf000 RCX: ffff88801ea2d700
RDX: 0000000000000000 RSI: 00000000000d0000 RDI: 00000000000cf000
RBP: 00000000000d0000 R08: ffffffff837fb46a R09: fffffbfff1bc7466
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff11028ee820c R14: fffffffffff30000 R15: ffff888147741060
FS:  0000555556daa300(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffea4528f88 CR3: 00000000190bd000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 btrfs_space_info_free_bytes_may_use fs/btrfs/space-info.h:142 [inline]
 block_rsv_release_bytes fs/btrfs/block-rsv.c:150 [inline]
 btrfs_block_rsv_release+0x444/0x530 fs/btrfs/block-rsv.c:294
 btrfs_release_global_block_rsv+0x2f/0x250 fs/btrfs/block-rsv.c:450
 btrfs_free_block_groups+0x8ab/0xc90 fs/btrfs/block-group.c:3922
 close_ctree+0x6d6/0x886 fs/btrfs/disk-io.c:4498
 generic_shutdown_super+0x136/0x2c0 fs/super.c:475
 kill_anon_super+0x37/0x60 fs/super.c:1067
 btrfs_kill_super+0x3d/0x50 fs/btrfs/super.c:2391
 deactivate_locked_super+0xa0/0x110 fs/super.c:335
 cleanup_mnt+0x44e/0x500 fs/namespace.c:1143
 task_work_run+0x129/0x1a0 kernel/task_work.c:164
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:175
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:208
 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline]
 syscall_exit_to_user_mode+0x5d/0x250 kernel/entry/common.c:301
 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f707f71fe67
Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffea4529758 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f707f71fe67
RDX: 00007ffea4529819 RSI: 000000000000000a RDI: 00007ffea4529810
RBP: 00007ffea4529810 R08: 00000000ffffffff R09: 00007ffea45295f0
R10: 0000555556dab653 R11: 0000000000000202 R12: 00007ffea452a890
R13: 0000555556dab5f0 R14: 00007ffea4529780 R15: 0000000000000002
 </TASK>

Crashes (23):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/04/30 22:30 linux-5.15.y f48aeeaaa64c 62df2017 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan WARNING in btrfs_space_info_update_bytes_may_use
2024/02/29 12:41 linux-5.15.y 458ce51d0356 352ab904 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 WARNING in btrfs_space_info_update_bytes_may_use
2023/06/18 20:53 linux-5.15.y 471e639e59d1 f3921d4d .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 WARNING in btrfs_space_info_update_bytes_may_use
2023/07/30 05:26 linux-5.15.y 09996673e313 92476829 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan WARNING in btrfs_space_info_update_bytes_may_use
2023/11/02 02:49 linux-5.15.y 12952a23a5da 69904c9f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in btrfs_space_info_update_bytes_may_use
2023/09/23 03:43 linux-5.15.y 35ecaa3632bf 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in btrfs_space_info_update_bytes_may_use
2024/03/01 03:54 linux-5.15.y 458ce51d0356 352ab904 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in btrfs_space_info_update_bytes_may_use
2024/02/29 12:16 linux-5.15.y 458ce51d0356 352ab904 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in btrfs_space_info_update_bytes_may_use
2023/09/24 18:15 linux-5.15.y b911329317b4 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in btrfs_space_info_update_bytes_may_use
2023/07/19 04:30 linux-5.15.y d54cfc420586 022df2bb .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in btrfs_space_info_update_bytes_may_use
2023/04/16 07:17 linux-5.15.y 4fdad925aa1a ec410564 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in btrfs_space_info_update_bytes_may_use
2023/08/11 03:21 linux-5.15.y c275eaaaa342 da3c3ef8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in btrfs_space_info_update_bytes_may_use
2023/07/30 13:38 linux-5.15.y 09996673e313 92476829 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in btrfs_space_info_update_bytes_may_use
2023/07/28 12:30 linux-5.15.y 09996673e313 92476829 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in btrfs_space_info_update_bytes_may_use
2023/07/28 04:59 linux-5.15.y 09996673e313 92476829 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in btrfs_space_info_update_bytes_may_use
2023/07/25 02:41 linux-5.15.y 5c6a716301d9 b03242d7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in btrfs_space_info_update_bytes_may_use
2023/06/29 20:44 linux-5.15.y 4af60700a60c 134ddc02 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in btrfs_space_info_update_bytes_may_use
2023/06/14 09:39 linux-5.15.y 7349e40704a0 d2ee9228 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in btrfs_space_info_update_bytes_may_use
2023/05/24 03:03 linux-5.15.y 9d6bde853685 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in btrfs_space_info_update_bytes_may_use
2023/04/22 17:25 linux-5.15.y 3299fb36854f 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in btrfs_space_info_update_bytes_may_use
2023/04/09 02:55 linux-5.15.y d86dfc4d95cd 71147e29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in btrfs_space_info_update_bytes_may_use
2023/04/09 00:30 linux-5.15.y d86dfc4d95cd 71147e29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in btrfs_space_info_update_bytes_may_use
2023/04/07 20:54 linux-5.15.y d86dfc4d95cd f7ba566d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in btrfs_space_info_update_bytes_may_use
* Struck through repros no longer work on HEAD.