[v6.1] INFO: task hung in read_part_sector (2)

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Jun 8, 2024, 4:58:25 AMJun 8
to syzkaller...@googlegroups.com
Hello,

syzbot found the following issue on:

HEAD commit: 88690811da69 Linux 6.1.92
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=1300e896980000
kernel config: https://syzkaller.appspot.com/x/.config?x=ee57a613e7f5bf6c
dashboard link: https://syzkaller.appspot.com/bug?extid=2322e3738fc248d5f38c
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/8b45ba80e02a/disk-88690811.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/ca769d644800/vmlinux-88690811.xz
kernel image: https://storage.googleapis.com/syzbot-assets/26a1d8aecbf6/bzImage-88690811.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+2322e3...@syzkaller.appspotmail.com

INFO: task syz-executor.2:6348 blocked for more than 143 seconds.
Not tainted 6.1.92-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:24968 pid:6348 ppid:3570 flags:0x00004006
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5245 [inline]
__schedule+0x142d/0x4550 kernel/sched/core.c:6558
schedule+0xbf/0x180 kernel/sched/core.c:6634
io_schedule+0x88/0x100 kernel/sched/core.c:8786
folio_wait_bit_common+0x878/0x1290 mm/filemap.c:1296
folio_put_wait_locked mm/filemap.c:1465 [inline]
do_read_cache_folio+0xb9/0x810 mm/filemap.c:3580
read_mapping_folio include/linux/pagemap.h:797 [inline]
read_part_sector+0xcb/0x350 block/partitions/core.c:722
adfspart_check_POWERTEC+0xc4/0x8e0 block/partitions/acorn.c:454
check_partition block/partitions/core.c:146 [inline]
blk_add_partitions block/partitions/core.c:607 [inline]
bdev_disk_changed+0x79e/0x1460 block/partitions/core.c:693
blkdev_get_whole+0x2dd/0x360 block/bdev.c:687
blkdev_get_by_dev+0x321/0xa10 block/bdev.c:824
blkdev_open+0x12e/0x2e0 block/fops.c:500
do_dentry_open+0x7f9/0x10f0 fs/open.c:882
do_open fs/namei.c:3628 [inline]
path_openat+0x2644/0x2e60 fs/namei.c:3785
do_filp_open+0x230/0x480 fs/namei.c:3812
do_sys_openat2+0x13b/0x500 fs/open.c:1318
do_sys_open fs/open.c:1334 [inline]
__do_sys_openat fs/open.c:1350 [inline]
__se_sys_openat fs/open.c:1345 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1345
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81


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