From: syzbot <syzbot+50f9bc7ab8eb224b7629@syzkaller.appspotmail.com>
To: linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org,
magiclinan@didiglobal.com, song@kernel.org,
syzkaller-bugs@googlegroups.com, xiao@kernel.org,
yukuai@fnnas.com, yukuai@fygo.io
Subject: [syzbot] [raid?] kernel BUG in find_zone
Date: Wed, 16 Sep 2026 05:57:39 -0700 [thread overview]
Message-ID: <6aaa9243.e91c2013.3bdb06.0000.GAE@google.com> (raw)
Hello,
syzbot found the following issue on:
HEAD commit: 50d05c7c76c9 Merge tag 'landlock-7.3-rc3' of git://git.ker..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=100769f9580000
kernel config: https://syzkaller.appspot.com/x/.config?x=85bc5cc2fc7394d9
dashboard link: https://syzkaller.appspot.com/bug?extid=50f9bc7ab8eb224b7629
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
userspace arch: i386
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-50d05c7c.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/303a0ade8f9e/vmlinux-50d05c7c.xz
kernel image: https://storage.googleapis.com/syzbot-assets/70b8ca71442b/bzImage-50d05c7c.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+50f9bc7ab8eb224b7629@syzkaller.appspotmail.com
------------[ cut here ]------------
kernel BUG at drivers/md/raid0.c:318!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 1 UID: 0 PID: 8386 Comm: syz.2.584 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:find_zone drivers/md/raid0.c:318 [inline]
RIP: 0010:find_zone.isra.0+0x129/0x150 drivers/md/raid0.c:305
Code: f9 48 89 e8 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 48 89 ef e8 a2 00 fe f9 e9 79 ff ff ff e8 c8 bf 8b f9 90 <0f> 0b 48 8b 3c 24 e8 8c 00 fe f9 e9 04 ff ff ff 48 89 df e8 7f 00
RSP: 0018:ffffc9000557f090 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff888022b34b00 RSI: ffffffff887fa208 RDI: ffff888022b34b00
RBP: ffff888042790b18 R08: 0000000000000004 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff888096a60000(0063) knlGS:00000000f53fdb40
CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000033863fff CR3: 0000000070ae4000 CR4: 0000000000352ef0
Call Trace:
<TASK>
raid0_map_submit_bio drivers/md/raid0.c:568 [inline]
raid0_make_request+0x299/0x1660 drivers/md/raid0.c:626
md_handle_request+0x824/0x1230 drivers/md/md.c:417
md_submit_bio+0x1e9/0x350 drivers/md/md.c:458
__submit_bio block/blk-core.c:681 [inline]
__submit_bio+0x20e/0x3d0 block/blk-core.c:670
__submit_bio_noacct block/blk-core.c:724 [inline]
submit_bio_noacct_nocheck+0x736/0xc00 block/blk-core.c:792
submit_bio_noacct+0xc93/0x2130 block/blk-core.c:925
blk_crypto_submit_bio include/linux/blk-crypto.h:212 [inline]
__bh_submit+0x7ce/0xaa0 fs/buffer.c:1132
bh_submit fs/buffer.c:1146 [inline]
block_read_full_folio+0x496/0x8c0 fs/buffer.c:2373
filemap_read_folio+0xfc/0x3b0 mm/filemap.c:2520
do_read_cache_folio+0x2d7/0x6b0 mm/filemap.c:4156
read_mapping_folio include/linux/pagemap.h:1015 [inline]
read_part_sector+0xd1/0x370 block/partitions/core.c:724
adfspart_check_ICS+0x91/0x7d0 block/partitions/acorn.c:357
check_partition block/partitions/core.c:143 [inline]
blk_add_partitions block/partitions/core.c:591 [inline]
bdev_disk_changed+0x7b1/0x1260 block/partitions/core.c:695
blkdev_get_whole+0x187/0x290 block/bdev.c:793
bdev_open+0x2c7/0xe40 block/bdev.c:1002
blkdev_open+0x34e/0x4f0 block/fops.c:674
do_dentry_open+0x6ab/0x14d0 fs/open.c:996
vfs_open+0x82/0x3f0 fs/open.c:1101
do_open fs/namei.c:4837 [inline]
path_openat+0x19fa/0x2440 fs/namei.c:5000
do_file_open+0x20e/0x430 fs/namei.c:5029
do_sys_openat2+0x10f/0x1e0 fs/open.c:1417
do_sys_open fs/open.c:1423 [inline]
__do_compat_sys_openat fs/open.c:1485 [inline]
__se_compat_sys_openat fs/open.c:1483 [inline]
__ia32_compat_sys_openat+0x12d/0x210 fs/open.c:1483
do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:79 [inline]
__do_fast_syscall_32+0x13a/0x8b0 arch/x86/entry/syscall_32.c:291
do_fast_syscall_32+0x32/0x70 arch/x86/entry/syscall_32.c:316
entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf700efec
Code: Unable to access opcode bytes at 0xf700efc2.
RSP: 002b:00000000f53fd50c EFLAGS: 00000292 ORIG_RAX: 0000000000000127
RAX: ffffffffffffffda RBX: 00000000ffffff9c RCX: 0000000080000300
RDX: 0000000000004002 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:find_zone drivers/md/raid0.c:318 [inline]
RIP: 0010:find_zone.isra.0+0x129/0x150 drivers/md/raid0.c:305
Code: f9 48 89 e8 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 48 89 ef e8 a2 00 fe f9 e9 79 ff ff ff e8 c8 bf 8b f9 90 <0f> 0b 48 8b 3c 24 e8 8c 00 fe f9 e9 04 ff ff ff 48 89 df e8 7f 00
RSP: 0018:ffffc9000557f090 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff888022b34b00 RSI: ffffffff887fa208 RDI: ffff888022b34b00
RBP: ffff888042790b18 R08: 0000000000000004 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff888096a60000(0063) knlGS:00000000f53fdb40
CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f5315ff4 CR3: 0000000070ae4000 CR4: 0000000000352ef0
---
This report is generated by a bot. It may contain errors.
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next reply other threads:[~2026-09-16 12:57 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-16 12:57 syzbot [this message]
2026-09-17 1:18 ` [syzbot] [raid?] kernel BUG in find_zone Zizhi Wo
2026-09-17 1:18 ` syzbot
2026-09-17 1:24 ` Zizhi Wo
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