syzbot


kernel BUG at fs/ext4/ext4.h:LINE!

Status: upstream: reported C repro on 2020/10/08 13:59
Subsystems: ext4
[Documentation on labels]
Reported-by: syzbot+c24787e72920213d5bcb@syzkaller.appspotmail.com
First crash: 1354d, last: 2d10h
Similar bugs (14)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-5-15 kernel BUG in ext4_mb_find_by_goal C error done 19 364d 403d 0/2 auto-obsoleted due to no activity on 2023/09/19 22:50
linux-4.19 kernel BUG at fs/ext4/ext4.h:LINE! ext4 C error 13 498d 1316d 0/1 upstream: reported C repro on 2020/11/15 12:08
android-5-10 kernel BUG in ext4_mb_find_by_goal C error done 31 362d 403d 2/2 fixed on 2023/08/16 20:51
android-6-1 kernel BUG in ext4_mb_find_by_goal origin:lts C error done 78 246d 403d 0/2 auto-obsoleted due to no activity on 2023/12/31 02:01
upstream kernel BUG at fs/ext4/ext4.h:LINE! ext4 1 1269d 1265d 0/27 auto-closed as invalid on 2021/05/01 06:31
android-5-10 kernel BUG in ext4_free_blocks 3 923d 956d 0/2 auto-closed as invalid on 2022/03/13 09:34
linux-4.14 kernel BUG in ext4_mb_load_buddy_gfp ext4 C 6 477d 1151d 0/1 upstream: reported C repro on 2021/04/29 16:39
android-5-10 kernel BUG in ext4_free_blocks (2) ext4 C error 25 419d 721d 2/2 fixed on 2023/05/04 14:51
upstream kernel BUG in ext4_get_group_info ext4 C error 237 406d 1039d 22/27 fixed on 2023/07/01 16:05
android-5-15 kernel BUG in ext4_mb_load_buddy_gfp (2) origin:upstream missing-backport C error done 24 367d 414d 0/2 upstream: reported C repro on 2023/05/06 10:12
android-6-1 kernel BUG in ext4_mb_load_buddy_gfp C error done 42 247d 403d 0/2 auto-obsoleted due to no activity on 2023/12/29 16:31
android-5-15 kernel BUG in ext4_mb_load_buddy_gfp ext4 C error 9 457d 574d 2/2 fixed on 2023/03/28 12:29
android-5-10 kernel BUG in ext4_mb_load_buddy_gfp C error 28 31d 416d 0/2 upstream: reported C repro on 2023/05/04 23:52
android-5-15 kernel BUG in ext4_free_blocks ext4 1 518d 518d 0/2 auto-obsoleted due to no activity on 2023/04/30 03:35
Last patch testing requests (10)
Created Duration User Patch Repo Result
2024/03/10 08:23 5m retest repro android12-5.4 report log
2024/03/10 08:23 11m retest repro android12-5.4 OK log
2024/03/10 08:23 14m retest repro android12-5.4 report log
2024/03/10 08:23 14m retest repro android12-5.4 report log
2024/02/25 07:23 16m retest repro android12-5.4 OK log
2024/02/25 07:23 30m retest repro android12-5.4 report log
2024/02/25 07:23 32m retest repro android12-5.4 OK log
2024/02/25 07:23 17m retest repro android12-5.4 OK log
2024/02/25 07:23 13m retest repro android12-5.4 report log
2024/02/11 04:04 26m retest repro android12-5.4 report log

Sample crash report:
EXT4-fs error (device loop0) in ext4_reserve_inode_write:6099: Corrupt filesystem
------------[ cut here ]------------
kernel BUG at fs/ext4/ext4.h:2984!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 366 Comm: syz-executor408 Not tainted 5.4.268-syzkaller-00012-gd0d34dcb02cc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:2984 [inline]
RIP: 0010:ext4_mb_find_by_goal+0xc10/0xc50 fs/ext4/mballoc.c:1826
Code: fc ff ff 89 d1 80 e1 07 80 c1 03 38 c1 0f 8c 0d fc ff ff 48 89 d7 e8 0f 85 c8 ff 48 8b 54 24 30 e9 fb fb ff ff e8 20 b1 98 ff <0f> 0b e8 49 69 6f ff e8 14 b1 98 ff 0f 0b e8 0d b1 98 ff 0f 0b e8
RSP: 0018:ffff8881dc78e8e0 EFLAGS: 00010293
RAX: ffffffff81cb9600 RBX: 0000000000000001 RCX: ffff8881dd2b1f80
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffff8881dc78e9f0 R08: ffffffff81cb8b29 R09: ffffed103d19cd33
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001
R13: ffff8881dc6a83f0 R14: 1ffff1103b8f1d2c R15: 1ffff1103b8d507e
FS:  0000555556b7a380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002004007f CR3: 00000001dc627000 CR4: 00000000003406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ext4_mb_regular_allocator+0x229/0x10d0 fs/ext4/mballoc.c:2129
 ext4_mb_new_blocks+0x59a/0x2d10 fs/ext4/mballoc.c:4596
 ext4_ext_map_blocks+0x1e70/0x7450 fs/ext4/extents.c:4511
 ext4_map_blocks+0xa2f/0x1ba0 fs/ext4/inode.c:661
 _ext4_get_block+0x21b/0x610 fs/ext4/inode.c:802
 ext4_block_write_begin+0x68a/0x1390 fs/ext4/inode.c:1213
 ext4_write_begin+0x5ba/0x1900 fs/ext4/inode.c:1351
 ext4_da_write_begin+0x4a3/0xfe0 fs/ext4/inode.c:3110
 generic_perform_write+0x2c7/0x560 mm/filemap.c:3450
 __generic_file_write_iter+0x224/0x530 mm/filemap.c:3579
 ext4_file_write_iter+0x499/0x10e0 fs/ext4/file.c:270
 call_write_iter include/linux/fs.h:1983 [inline]
 new_sync_write fs/read_write.c:483 [inline]
 __vfs_write+0x5d3/0x750 fs/read_write.c:496
 vfs_write+0x206/0x4e0 fs/read_write.c:558
 ksys_write+0x199/0x2c0 fs/read_write.c:611
 do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x5c/0xc1
Modules linked in:
---[ end trace b9cfabf4af726e7f ]---
RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:2984 [inline]
RIP: 0010:ext4_mb_find_by_goal+0xc10/0xc50 fs/ext4/mballoc.c:1826
Code: fc ff ff 89 d1 80 e1 07 80 c1 03 38 c1 0f 8c 0d fc ff ff 48 89 d7 e8 0f 85 c8 ff 48 8b 54 24 30 e9 fb fb ff ff e8 20 b1 98 ff <0f> 0b e8 49 69 6f ff e8 14 b1 98 ff 0f 0b e8 0d b1 98 ff 0f 0b e8
RSP: 0018:ffff8881dc78e8e0 EFLAGS: 00010293
RAX: ffffffff81cb9600 RBX: 0000000000000001 RCX: ffff8881dd2b1f80
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffff8881dc78e9f0 R08: ffffffff81cb8b29 R09: ffffed103d19cd33
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001
R13: ffff8881dc6a83f0 R14: 1ffff1103b8f1d2c R15: 1ffff1103b8d507e
FS:  0000555556b7a380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002004007f CR3: 00000001dc627000 CR4: 00000000003406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (417):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/04/07 03:53 android12-5.4 d0d34dcb02cc ca620dd8 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/04/06 11:31 android12-5.4 d0d34dcb02cc ca620dd8 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro #1] [mounted in repro #2] ci2-android-5-4-kasan kernel BUG in ext4_mb_load_buddy_gfp
2024/01/14 02:20 android12-5.4 57a39998c138 551587c1 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2023/12/25 21:21 android12-5.4 c0585bc7c835 fb427a07 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in ext4_mb_load_buddy_gfp
2023/07/14 04:27 android12-5.4 6d5c2c1877e5 55eda22f .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in ext4_mb_load_buddy_gfp
2023/06/25 05:43 android12-5.4 f5af01b60cfa 79782afc .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2023/06/15 06:21 android12-5.4 39a9b92e9828 76decb82 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2023/05/17 18:48 android12-5.4 f423d52eea72 eaac4681 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2023/05/05 01:07 android12-5.4 cf4e000017b8 518a39a6 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in ext4_mb_load_buddy_gfp
2023/03/20 01:30 android12-5.4 f4e4be09c27c 7939252e .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in ext4_mb_load_buddy_gfp
2023/03/19 02:20 android12-5.4 f4e4be09c27c 7939252e .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in ext4_mb_load_buddy_gfp
2023/03/15 05:12 android12-5.4 f4e4be09c27c 0d5c4377 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in ext4_mb_load_buddy_gfp
2021/03/27 06:23 android12-5.4 7af03784d889 a8529b82 .config console log report syz C ci2-android-5-4-kasan kernel BUG in ext4_mb_load_buddy_gfp
2023/09/09 21:22 android12-5.4 50533a8b511b 6654cf89 .config console log report syz [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in ext4_mb_load_buddy_gfp
2023/03/30 11:52 android12-5.4 da100c5e0cf5 f325deb0 .config strace log report syz [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in ext4_mb_load_buddy_gfp
2021/08/21 13:25 android12-5.4 3ce13296e72d b599f2fc .config console log report syz ci2-android-5-4-kasan kernel BUG in ext4_mb_load_buddy_gfp
2021/01/20 11:25 android12-5.4 e4139b2a81bd d4f4eca5 .config console log report syz ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2022/10/02 16:47 android12-5.4 3ee2a37108c8 feb56351 .config strace log report syz C [disk image] [vmlinux] ci2-android-5-4-kasan kernel BUG in ext4_mb_load_buddy_gfp
2022/07/04 02:33 android12-5.4 148e4ba7f4fc 1434eec0 .config strace log report syz C ci2-android-5-4-kasan kernel BUG in ext4_free_blocks
2023/10/03 13:19 android12-5.4 5f1cbd78af59 65faba36 .config console log report syz [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2023/02/02 08:20 android12-5.4 6a5ec6cea0cd 9a6f477c .config strace log report syz [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in ext4_mb_load_buddy_gfp
2024/06/21 16:04 android12-5.4 6f97bd951d82 edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/06/20 21:38 android12-5.4 6f97bd951d82 dac2aa43 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/06/19 01:26 android12-5.4 6f97bd951d82 639d6cdf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/06/18 18:59 android12-5.4 6f97bd951d82 639d6cdf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/06/18 17:58 android12-5.4 6f97bd951d82 639d6cdf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/06/16 23:51 android12-5.4 6f97bd951d82 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/06/15 17:59 android12-5.4 6f97bd951d82 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/06/13 19:23 android12-5.4 6f97bd951d82 a9616ff5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_load_buddy_gfp
2024/06/11 08:12 android12-5.4 dd432c37afcd b7d9eb04 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_load_buddy_gfp
2024/06/11 08:06 android12-5.4 dd432c37afcd b7d9eb04 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_load_buddy_gfp
2024/06/10 22:12 android12-5.4 dd432c37afcd 048c640a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/06/09 22:00 android12-5.4 dd432c37afcd 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_free_blocks
2024/06/08 14:53 android12-5.4 dd432c37afcd 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/06/08 00:58 android12-5.4 dd432c37afcd 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/06/07 15:27 android12-5.4 dd432c37afcd 121701b6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/06/07 13:02 android12-5.4 dd432c37afcd 121701b6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_free_blocks
2024/06/07 10:26 android12-5.4 dd432c37afcd 121701b6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_load_buddy_gfp
2024/06/06 03:11 android12-5.4 dd432c37afcd 121701b6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/06/05 09:26 android12-5.4 dd432c37afcd e1e2c66e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/06/04 22:18 android12-5.4 dd432c37afcd 11f2afa5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/06/02 21:50 android12-5.4 70fafe094510 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_free_blocks
2024/06/02 21:27 android12-5.4 70fafe094510 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_free_blocks
2024/06/02 15:36 android12-5.4 70fafe094510 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_free_blocks
2024/06/02 14:31 android12-5.4 70fafe094510 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_free_blocks
2024/06/01 21:25 android12-5.4 70fafe094510 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/05/31 18:10 android12-5.4 8322246edffa 0c378259 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/05/31 03:28 android12-5.4 8322246edffa 34889ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/05/31 01:46 android12-5.4 8322246edffa 34889ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/05/29 23:31 android12-5.4 8322246edffa 34889ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/05/28 23:59 android12-5.4 8322246edffa 34889ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/05/28 16:03 android12-5.4 8322246edffa f550015e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/05/27 14:38 android12-5.4 8322246edffa 761766e6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/05/27 12:23 android12-5.4 8322246edffa 761766e6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/05/27 03:56 android12-5.4 8322246edffa a10a183e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_load_buddy_gfp
2024/05/26 09:13 android12-5.4 8322246edffa a10a183e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/05/26 04:51 android12-5.4 8322246edffa a10a183e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/05/25 21:23 android12-5.4 8322246edffa a10a183e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/05/24 13:10 android12-5.4 51cf29fc2bfc 8f98448e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/05/23 06:08 android12-5.4 51cf29fc2bfc 4d098039 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/05/22 08:42 android12-5.4 51cf29fc2bfc 1014eca7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_load_buddy_gfp
2024/05/21 01:31 android12-5.4 51cf29fc2bfc c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/05/20 15:41 android12-5.4 51cf29fc2bfc c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/05/20 12:06 android12-5.4 51cf29fc2bfc c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/05/19 16:06 android12-5.4 51cf29fc2bfc c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_load_buddy_gfp
2024/05/18 15:13 android12-5.4 51cf29fc2bfc c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/05/17 11:19 android12-5.4 51cf29fc2bfc c2e07261 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2024/05/17 08:28 android12-5.4 51cf29fc2bfc c2e07261 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_mb_find_by_goal
2020/10/08 13:58 android12-5.4 54d2c66faf42 92390980 .config console log report info ci2-android-5-4-kasan
* Struck through repros no longer work on HEAD.