syzbot


kernel BUG in ext4_mb_use_inode_pa (2)

Status: upstream: reported C repro on 2024/08/08 04:33
Subsystems: ext4
[Documentation on labels]
Reported-by: syzbot+d79019213609e7056a19@syzkaller.appspotmail.com
First crash: 330d, last: 23h26m
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [ext4?] kernel BUG in ext4_mb_use_inode_pa (2) 0 (2) 2024/09/06 04:42
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream kernel BUG in ext4_mb_use_inode_pa ext4 C error done 2 1000d 1000d 22/29 fixed on 2023/02/24 13:50
Last patch testing requests (2)
Created Duration User Patch Repo Result
2025/03/11 17:03 31m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci report log
2025/02/04 01:53 15m retest repro upstream report log

Sample crash report:
EXT4-fs error (device loop0): ext4_mb_mark_diskspace_used:4113: comm syz-executor314: Allocating blocks 1-17 which overlap fs metadata
------------[ cut here ]------------
kernel BUG at fs/ext4/mballoc.c:4685!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5318 Comm: syz-executor314 Not tainted 6.15.0-syzkaller-12141-gec7714e49479 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:ext4_mb_use_inode_pa+0x6c1/0x720 fs/ext4/mballoc.c:4685
Code: e8 d4 57 ab ff 48 ba 00 00 00 00 00 fc ff df e9 da fa ff ff e8 30 e6 47 ff 90 0f 0b e8 28 e6 47 ff 90 0f 0b e8 20 e6 47 ff 90 <0f> 0b e8 18 e6 47 ff 90 0f 0b 48 8b 0c 24 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc9000d3cf3c8 EFLAGS: 00010293
RAX: ffffffff827875b0 RBX: 00000000ffffffff RCX: ffff888035674880
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000001
RBP: 1ffff11008d2a23d R08: ffff8880468298a3 R09: 1ffff11008d05314
R10: dffffc0000000000 R11: ffffed1008d05315 R12: 0000000000000004
R13: 0000000000000002 R14: 1ffff11008d05317 R15: ffff8880468298b8
FS:  00007efeefd106c0(0000) GS:ffff88808d255000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efeefd10d58 CR3: 0000000044136000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ext4_mb_use_preallocated+0x660/0x13f0 fs/ext4/mballoc.c:4902
 ext4_mb_new_blocks+0x5b4/0x46a0 fs/ext4/mballoc.c:6206
 ext4_ext_map_blocks+0x161a/0x6ac0 fs/ext4/extents.c:4383
 ext4_map_create_blocks fs/ext4/inode.c:609 [inline]
 ext4_map_blocks+0x931/0x18d0 fs/ext4/inode.c:813
 ext4_alloc_file_blocks+0x3b8/0xc60 fs/ext4/extents.c:4538
 ext4_zero_range+0x39b/0xb90 fs/ext4/extents.c:4618
 ext4_fallocate+0x74c/0xcd0 fs/ext4/extents.c:4790
 vfs_fallocate+0x6a0/0x830 fs/open.c:341
 ksys_fallocate fs/open.c:365 [inline]
 __do_sys_fallocate fs/open.c:370 [inline]
 __se_sys_fallocate fs/open.c:368 [inline]
 __x64_sys_fallocate+0xc0/0x110 fs/open.c:368
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7efeefd7c649
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 81 18 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007efeefd10218 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007efeefe03618 RCX: 00007efeefd7c649
RDX: 0000000000000fff RSI: 0000000000000011 RDI: 0000000000000004
RBP: 00007efeefe03610 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000008800000 R11: 0000000000000246 R12: 00007efeefdd0614
R13: 6273752f7665642f R14: 0000200000000080 R15: 00002000000002c0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_mb_use_inode_pa+0x6c1/0x720 fs/ext4/mballoc.c:4685
Code: e8 d4 57 ab ff 48 ba 00 00 00 00 00 fc ff df e9 da fa ff ff e8 30 e6 47 ff 90 0f 0b e8 28 e6 47 ff 90 0f 0b e8 20 e6 47 ff 90 <0f> 0b e8 18 e6 47 ff 90 0f 0b 48 8b 0c 24 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc9000d3cf3c8 EFLAGS: 00010293
RAX: ffffffff827875b0 RBX: 00000000ffffffff RCX: ffff888035674880
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000001
RBP: 1ffff11008d2a23d R08: ffff8880468298a3 R09: 1ffff11008d05314
R10: dffffc0000000000 R11: ffffed1008d05315 R12: 0000000000000004
R13: 0000000000000002 R14: 1ffff11008d05317 R15: ffff8880468298b8
FS:  00007efeefd106c0(0000) GS:ffff88808d255000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efeefd10d58 CR3: 0000000044136000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (101):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/06/05 21:26 upstream ec7714e49479 6b6b5f21 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2024/09/06 04:41 upstream ad618736883b 464ac2ed .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/02/23 10:17 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci a1c24ab82279 d34966d1 .config console log report syz / log [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci-upstream-gce-arm64 kernel BUG in ext4_mb_use_inode_pa
2024/08/04 04:29 upstream defaf1a2113a 1786a2a8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root kernel BUG in ext4_mb_use_inode_pa
2025/06/29 20:07 upstream afa9a6f4f574 fc9d8ee5 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/06/29 09:18 upstream dfba48a70cb6 fc9d8ee5 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/06/27 04:42 upstream f02769e7f272 803ce19b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/06/22 03:11 upstream 3f75bfff44be d6cdfb8a .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/06/20 14:47 upstream 41687a5c6f8b 804b3919 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/06/20 08:43 upstream 41687a5c6f8b ed3e87f7 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/06/19 05:45 upstream fb4d33ab452e ed3e87f7 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/06/15 03:43 upstream 4774cfe3543a 5f4b362d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/06/13 17:54 upstream 27605c8c0f69 1f72c409 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/06/09 12:00 upstream 19272b37aa4f 4826c28e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/06/09 03:48 upstream 939f15e640f1 4826c28e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/06/06 07:18 upstream e271ed52b344 6b6b5f21 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/06/05 19:55 upstream ec7714e49479 6b6b5f21 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/06/03 06:39 upstream 7f9039c524a3 a30356b7 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/06/01 23:25 upstream 7d4e49a77d99 3d2f584d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/06/01 10:36 upstream 4cb6c8af8591 3d2f584d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/05/29 23:36 upstream e0797d3b91de 3d2f584d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/05/26 16:20 upstream 0ff41df1cb26 06877188 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/05/25 06:35 upstream b1427432d3b6 ed351ea7 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/05/21 18:42 upstream 4a95bc121ccd f6063999 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/05/18 18:46 upstream 5723cc3450bc f41472b0 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/05/09 02:03 upstream 2c89c1b655c0 bb813bcc .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/05/08 14:51 upstream d76bb1ebb558 dbf35fa1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/05/08 03:33 upstream 707df3375124 dbf35fa1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/05/02 02:11 upstream 4f79eaa2ceac 51b137cd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/05/01 17:47 upstream 4f79eaa2ceac 51b137cd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/04/30 09:09 upstream 8bac8898fe39 85a5a23f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/04/25 16:15 upstream 02ddfb981de8 dea5c7e4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/04/22 08:48 upstream a33b5a08cbbd 2a20f901 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/04/19 09:01 upstream 3088d26962e8 2a20f901 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/04/17 11:21 upstream cfb2e2c57aef 552876f8 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/04/16 04:06 upstream 1a1d569a75f3 a95239b1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/04/15 08:25 upstream 834a4a689699 0bd6db41 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/04/13 15:24 upstream 7cdabafc0012 0bd6db41 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/04/13 14:00 upstream 7cdabafc0012 0bd6db41 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/04/08 06:41 upstream 0af2f6be1b42 a2ada0e7 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/04/08 02:12 upstream 0af2f6be1b42 a2ada0e7 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/04/05 01:55 upstream e48e99b6edf4 c53ea9c9 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/04/04 02:54 upstream a2cc6ff5ec8f d7ae3a11 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/04/03 18:19 upstream a2cc6ff5ec8f d7ae3a11 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/04/01 00:51 upstream 609706855d90 36d76a97 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2025/03/30 12:20 upstream 93d52288679e d3999433 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2024/10/28 20:44 upstream 819837584309 9efb3cc7 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2024/10/25 02:00 upstream 4e46774408d9 c79b8ca5 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2024/10/21 21:30 upstream 42f7652d3eb5 14517542 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2024/10/08 09:29 upstream 87d6aab2389e 402f1df0 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2024/09/30 02:41 upstream e7ed34365879 ba29ff75 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2024/09/27 22:20 upstream e477dba5442c 2b1784d6 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2024/09/25 07:43 upstream 68e5c7d4cefb 349a68c4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2024/09/17 10:44 upstream a430d95c5efa c673ca06 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2024/09/12 16:15 upstream 77f587896757 60e1a995 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2024/09/11 21:56 upstream 7c6a3a65ace7 ede7a22c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2024/09/10 20:48 upstream 8d8d276ba2fb e1ac59f4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2024/09/08 07:49 upstream d1f2d51b711a 9750182a .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2024/09/07 06:40 upstream b31c44928842 9750182a .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
2024/09/06 03:23 upstream ad618736883b 464ac2ed .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_mb_use_inode_pa
* Struck through repros no longer work on HEAD.