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Message-ID: <0000000000001bebd305ee5cd30e@google.com> Date: Sat, 26 Nov 2022 02:08:49 -0800 From: syzbot <syzbot+53b443b5c64221ee8bad@...kaller.appspotmail.com> To: chandan.babu@...cle.com, dchinner@...hat.com, djwong@...nel.org, linux-kernel@...r.kernel.org, linux-xfs@...r.kernel.org, syzkaller-bugs@...glegroups.com Subject: [syzbot] WARNING in xfs_bmapi_convert_delalloc Hello, syzbot found the following issue on: HEAD commit: a77d28d13789 Merge branch 'for-next/core' into for-kernelci git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci console output: https://syzkaller.appspot.com/x/log.txt?x=15cd6d45880000 kernel config: https://syzkaller.appspot.com/x/.config?x=c4c990190d758078 dashboard link: https://syzkaller.appspot.com/bug?extid=53b443b5c64221ee8bad compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: arm64 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/7c4b04ddbeb3/disk-a77d28d1.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/3ecedb0cf6ca/vmlinux-a77d28d1.xz kernel image: https://storage.googleapis.com/syzbot-assets/44c59c4393c7/Image-a77d28d1.gz.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+53b443b5c64221ee8bad@...kaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 0 PID: 3540 at fs/xfs/libxfs/xfs_bmap.c:4592 xfs_bmapi_convert_delalloc+0x67c/0x6b8 fs/xfs/libxfs/xfs_bmap.c:4592 Modules linked in: CPU: 0 PID: 3540 Comm: kworker/u4:11 Not tainted 6.1.0-rc6-syzkaller-32651-ga77d28d13789 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022 Workqueue: writeback wb_workfn (flush-7:1) pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : xfs_bmapi_convert_delalloc+0x67c/0x6b8 fs/xfs/libxfs/xfs_bmap.c:4592 lr : xfs_bmapi_convert_delalloc+0x67c/0x6b8 fs/xfs/libxfs/xfs_bmap.c:4592 sp : ffff800015c334a0 x29: ffff800015c33580 x28: 0000000000000000 x27: 0000000000000000 x26: ffff800015c334f0 x25: ffffffffffffffff x24: ffff000119443000 x23: ffff0001198af440 x22: ffff800015c338f8 x21: ffff00011aa80000 x20: 0000000000000000 x19: ffff0001198af400 x18: 00000000000000ea x17: ffff80000c0ed83c x16: 0000000000000000 x15: 0000000000000000 x14: 0000000000000000 x13: 0000000000000003 x12: ffff80000d601058 x11: ff80800008dd70f8 x10: 0000000000000000 x9 : ffff800008dd70f8 x8 : ffff0000f0c63480 x7 : ffff800008daa4cc x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff800008db0090 x2 : 0000000000000009 x1 : ffffffffffffffff x0 : ffffffffffffffff Call trace: xfs_bmapi_convert_delalloc+0x67c/0x6b8 fs/xfs/libxfs/xfs_bmap.c:4592 xfs_convert_blocks fs/xfs/xfs_aops.c:259 [inline] xfs_map_blocks+0x4a8/0x6d8 fs/xfs/xfs_aops.c:380 iomap_writepage_map+0x190/0x8cc fs/iomap/buffered-io.c:1360 iomap_do_writepage+0x1c0/0x560 fs/iomap/buffered-io.c:1523 write_cache_pages+0x35c/0x8bc mm/page-writeback.c:2360 iomap_writepages+0x44/0xec fs/iomap/buffered-io.c:1540 xfs_vm_writepages+0x94/0xd4 fs/xfs/xfs_aops.c:500 do_writepages+0x144/0x27c mm/page-writeback.c:2469 __writeback_single_inode+0x64/0x2e4 fs/fs-writeback.c:1587 writeback_sb_inodes+0x3e4/0x85c fs/fs-writeback.c:1870 wb_writeback+0x198/0x328 fs/fs-writeback.c:2044 wb_do_writeback+0xc8/0x384 fs/fs-writeback.c:2187 wb_workfn+0x70/0x15c fs/fs-writeback.c:2227 process_one_work+0x2d8/0x504 kernel/workqueue.c:2289 worker_thread+0x340/0x610 kernel/workqueue.c:2436 kthread+0x12c/0x158 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:863 irq event stamp: 21709788 hardirqs last enabled at (21709787): [<ffff80000992ed1c>] get_random_u32+0x20c/0x294 drivers/char/random.c:510 hardirqs last disabled at (21709788): [<ffff80000c0a4074>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (21709658): [<ffff8000080102e4>] _stext+0x2e4/0x37c softirqs last disabled at (21709557): [<ffff800008017c88>] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80 ---[ end trace 0000000000000000 ]--- XFS (loop1): page discard on page fffffc00047d3f00, inode 0x62c, pos 13258752. XFS (loop1): page discard on page fffffc00047d3f40, inode 0x62c, pos 13262848. XFS (loop1): page discard on page fffffc00047d3f80, inode 0x62c, pos 13266944. XFS (loop1): page discard on page fffffc00047d3fc0, inode 0x62c, pos 13271040. XFS (loop1): page discard on page fffffc0004742800, inode 0x62c, pos 13275136. XFS (loop1): page discard on page fffffc0004742840, inode 0x62c, pos 13279232. XFS (loop1): page discard on page fffffc0004742880, inode 0x62c, pos 13283328. XFS (loop1): page discard on page fffffc00047428c0, inode 0x62c, pos 13287424. XFS (loop1): page discard on page fffffc0004742900, inode 0x62c, pos 13291520. XFS (loop1): page discard on page fffffc0004742940, inode 0x62c, pos 13295616. --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@...glegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
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