syzbot


WARNING in mb_find_extent

Status: upstream: reported C repro on 2022/12/30 07:58
Subsystems: ext4 (incorrect?)
Reported-by: syzbot+68223fe9f6c95ad43bed@syzkaller.appspotmail.com
First crash: 96d, last: 51d

Cause bisection: failed (error log, bisect log)

Fix bisection: failed (error log, bisect log)
similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 WARNING in mb_find_extent ext4 C 1 28d 90d 0/1 upstream: reported C repro on 2023/01/02 05:18

Sample crash report:
EXT4-fs: Warning: mounting with data=journal disables delayed allocation, dioread_nolock, O_DIRECT and fast_commit support!
EXT4-fs (loop0): orphan cleanup on readonly fs
------------[ cut here ]------------
WARNING: CPU: 1 PID: 5067 at fs/ext4/mballoc.c:1869 mb_find_extent+0x8a1/0xe30
Modules linked in:
CPU: 1 PID: 5067 Comm: syz-executor307 Not tainted 6.2.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:mb_find_extent+0x8a1/0xe30 fs/ext4/mballoc.c:1869
Code: 3c 30 00 74 08 48 89 ef e8 3c 2c a1 ff 48 8b 6d 00 48 89 ef 48 89 de e8 8d 86 4b ff 48 39 dd 0f 83 2e 01 00 00 e8 3f 84 4b ff <0f> 0b 48 8b 44 24 70 42 80 3c 30 00 74 08 4c 89 ef e8 09 2c a1 ff
RSP: 0018:ffffc90003c9e098 EFLAGS: 00010293
RAX: ffffffff82405731 RBX: 0000000000000041 RCX: ffff8880783457c0
RDX: 0000000000000000 RSI: 0000000000000041 RDI: 0000000000000040
RBP: 0000000000000040 R08: ffffffff82405723 R09: ffffed10053c9402
R10: ffffed10053c9402 R11: 1ffff110053c9401 R12: 0000000000000000
R13: ffffc90003c9e538 R14: dffffc0000000000 R15: ffffc90003c9e2cc
FS:  0000555556665300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056312f6796f8 CR3: 0000000022437000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ext4_mb_complex_scan_group+0x353/0x1100 fs/ext4/mballoc.c:2307
 ext4_mb_regular_allocator+0x1533/0x3860 fs/ext4/mballoc.c:2735
 ext4_mb_new_blocks+0xddf/0x3db0 fs/ext4/mballoc.c:5605
 ext4_ext_map_blocks+0x1868/0x6880 fs/ext4/extents.c:4286
 ext4_map_blocks+0xa49/0x1cc0 fs/ext4/inode.c:651
 ext4_getblk+0x1b9/0x770 fs/ext4/inode.c:864
 ext4_bread+0x2a/0x170 fs/ext4/inode.c:920
 ext4_quota_write+0x225/0x570 fs/ext4/super.c:7105
 write_blk fs/quota/quota_tree.c:64 [inline]
 get_free_dqblk+0x34a/0x6d0 fs/quota/quota_tree.c:130
 do_insert_tree+0x26b/0x1aa0 fs/quota/quota_tree.c:340
 do_insert_tree+0x722/0x1aa0 fs/quota/quota_tree.c:375
 do_insert_tree+0x722/0x1aa0 fs/quota/quota_tree.c:375
 do_insert_tree+0x722/0x1aa0 fs/quota/quota_tree.c:375
 dq_insert_tree fs/quota/quota_tree.c:401 [inline]
 qtree_write_dquot+0x3b6/0x530 fs/quota/quota_tree.c:420
 v2_write_dquot+0x11b/0x190 fs/quota/quota_v2.c:358
 dquot_acquire+0x348/0x670 fs/quota/dquot.c:444
 ext4_acquire_dquot+0x2dc/0x400 fs/ext4/super.c:6740
 dqget+0x999/0xdc0 fs/quota/dquot.c:914
 __dquot_initialize+0x3d0/0xcf0 fs/quota/dquot.c:1492
 ext4_process_orphan+0x57/0x2d0 fs/ext4/orphan.c:329
 ext4_orphan_cleanup+0xb60/0x1340 fs/ext4/orphan.c:474
 __ext4_fill_super fs/ext4/super.c:5516 [inline]
 ext4_fill_super+0x81cd/0x8700 fs/ext4/super.c:5644
 get_tree_bdev+0x400/0x620 fs/super.c:1282
 vfs_get_tree+0x88/0x270 fs/super.c:1489
 do_new_mount+0x289/0xad0 fs/namespace.c:3145
 do_mount fs/namespace.c:3488 [inline]
 __do_sys_mount fs/namespace.c:3697 [inline]
 __se_sys_mount+0x2d3/0x3c0 fs/namespace.c:3674
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f019e01bc1a
Code: 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 49 89 ca b8 a5 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:00007ffdd7fabed8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f019e01bc1a
RDX: 0000000020000040 RSI: 0000000020000500 RDI: 00007ffdd7fabee0
RBP: 00007ffdd7fabee0 R08: 00007ffdd7fabf20 R09: 0000000000002dd1
R10: 0000000000000047 R11: 0000000000000206 R12: 0000000000000004
R13: 00005555566652c0 R14: 00007ffdd7fabf20 R15: 0000000000000000
 </TASK>

Crashes (135):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Title
ci2-upstream-fs 2022/12/26 07:54 upstream 1b929c02afd3 9da18ae8 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] WARNING in mb_find_extent
ci2-upstream-fs 2023/01/14 12:15 upstream 97ec4d559d93 a63719e7 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-kasan-gce-selinux-root 2023/01/14 10:22 upstream d9fc1511728c 529798b0 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-qemu-upstream-386 2023/01/14 12:29 upstream 97ec4d559d93 a63719e7 .config console log report info WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/09 19:28 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci eaed33698e35 07980f9d .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/09 06:29 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci eaed33698e35 14a312c8 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/09 05:29 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci eaed33698e35 14a312c8 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/08 16:41 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci eaed33698e35 fc9c934e .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/08 15:36 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci eaed33698e35 fc9c934e .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/08 07:38 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci eaed33698e35 15c3d445 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/07 18:37 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci ca72d58361ee 15c3d445 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/07 15:52 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci ca72d58361ee 15c3d445 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/07 13:54 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci ca72d58361ee 7d00f0e1 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/07 03:16 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci ca72d58361ee 0a9c11b6 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/06 23:03 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci ca72d58361ee 0a9c11b6 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/06 17:41 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci ca72d58361ee 0a9c11b6 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/06 09:22 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci ca72d58361ee be607b78 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/06 08:40 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci ca72d58361ee be607b78 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/06 00:51 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci ca72d58361ee be607b78 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/05 21:07 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci ca72d58361ee be607b78 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/04 16:07 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci ca72d58361ee be607b78 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/03 17:41 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci ca72d58361ee 1b2f701a .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/03 06:59 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci ca72d58361ee 16d19e30 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/03 05:19 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci ca72d58361ee 16d19e30 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/02 19:30 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci ca72d58361ee 16d19e30 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/02 17:00 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci ca72d58361ee 16d19e30 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/02 15:07 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci ca72d58361ee 16d19e30 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/02 10:28 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci ca72d58361ee 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/02 04:58 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci ca72d58361ee 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/02 00:34 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci ca72d58361ee 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/01 23:33 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci ca72d58361ee 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/01 21:45 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci ca72d58361ee 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/01 18:32 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci f57a12aa375c 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/01 15:06 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci f57a12aa375c 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/01 11:59 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci f57a12aa375c 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/01 08:59 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci f57a12aa375c 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/01 07:28 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci f57a12aa375c 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/02/01 05:45 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci f57a12aa375c 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/01/31 20:37 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci f57a12aa375c 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/01/31 18:57 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci f57a12aa375c 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/01/31 16:04 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci c62c88e05937 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/01/31 12:19 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci c62c88e05937 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/01/31 08:08 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci c62c88e05937 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/01/31 07:08 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci c62c88e05937 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/01/31 02:26 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci c62c88e05937 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/01/31 01:25 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci c62c88e05937 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/01/30 18:25 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci c62c88e05937 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/01/30 15:27 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci c62c88e05937 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
ci-upstream-gce-arm64 2023/01/30 12:15 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci c62c88e05937 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in mb_find_extent
* Struck through repros no longer work on HEAD.