WARNING in __blkdev

Kernel	Title	Repro	Fix bisect	Count	Last	Reported	Patched	Status
upstream	WARNING in __blkdev_put fs			2	2019d	2018d	0/26	auto-closed as invalid on 2019/04/07 01:07
upstream	WARNING in __blkdev_put (2) fs	syz		3082	1711d	1718d	12/26	fixed on 2019/09/06 20:45
linux-4.19	WARNING in __blkdev_put	syz	error	1	575d	575d	0/1	upstream: reported syz repro on 2022/09/22 09:06

Buffer I/O error on dev loop1p1, logical block 1, async page read blk_update_request: I/O error, dev loop1, sector 1 Buffer I/O error on dev loop1p1, logical block 0, async page read Buffer I/O error on dev loop1p1, logical block 1, async page read ------------[ cut here ]------------ WARNING: CPU: 1 PID: 10600 at fs/block_dev.c:1584 __blkdev_put+0x6d6/0x840 fs/block_dev.c:1584 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 10600 Comm: syz-executor6 Not tainted 4.9.113-g47bbcd6 #10 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff88019ce67b60 ffffffff81eb32a9 ffffffff83c48980 00000000ffffffff 0000000000000000 0000000000000001 0000000000000630 ffff88019ce67c20 ffffffff81421a55 0000000041b58ab3 ffffffff843bb788 ffffffff81421896 Call Trace: [<ffffffff81eb32a9>] __dump_stack lib/dump_stack.c:15 [inline] [<ffffffff81eb32a9>] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [<ffffffff81421a55>] panic+0x1bf/0x3bc kernel/panic.c:179 [<ffffffff81421d41>] __warn.cold.9+0xc1/0x17f kernel/panic.c:542 [<ffffffff8113684c>] warn_slowpath_null+0x2c/0x40 kernel/panic.c:585 [<ffffffff816311d6>] __blkdev_put+0x6d6/0x840 fs/block_dev.c:1584 [<ffffffff81632125>] blkdev_put+0x85/0x560 fs/block_dev.c:1663 [<ffffffff8163268b>] blkdev_close+0x8b/0xb0 fs/block_dev.c:1670 [<ffffffff815782e3>] __fput+0x263/0x700 fs/file_table.c:208 [<ffffffff81578805>] ____fput+0x15/0x20 fs/file_table.c:244 [<ffffffff8119838c>] task_work_run+0x10c/0x180 kernel/task_work.c:116 [<ffffffff8100559c>] tracehook_notify_resume include/linux/tracehook.h:191 [inline] [<ffffffff8100559c>] exit_to_usermode_loop+0xfc/0x120 arch/x86/entry/common.c:161 [<ffffffff810064d4>] prepare_exit_to_usermode arch/x86/entry/common.c:191 [inline] [<ffffffff810064d4>] syscall_return_slowpath arch/x86/entry/common.c:260 [inline] [<ffffffff810064d4>] do_syscall_64+0x364/0x490 arch/x86/entry/common.c:287 [<ffffffff839f9f93>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..