From: Qian Cai <cai@redhat.com>
To: Matthew Wilcox <willy@infradead.org>
Cc: linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org,
"Darrick J ."@ml01.01.org, Wong@ml01.01.org,
" <darrick.wong@oracle.com>,
Christoph Hellwig <hch@infradead.org>,
"@ml01.01.org, linux-nvdimm@lists.01.org,
linux-kernel@vger.kernel.org, Dave Kleikamp <shaggy@kernel.org>,
jfs-discussion@lists.sourceforge.net,
Dave Chinner <dchinner@redhat.com>,
Stephen Rothwell <sfr@canb.auug.org.au>,
linux-next@vger.kernel.org
Subject: Re: [PATCH v2 5/9] iomap: Support arbitrarily many blocks per page
Date: Wed, 23 Sep 2020 12:55:00 -0400 [thread overview]
Message-ID: <ff8f882fe320e53f5f429fc9a9d4ed85410d7972.camel@redhat.com> (raw)
In-Reply-To: <20200923024859.GM32101@casper.infradead.org>
On Wed, 2020-09-23 at 03:48 +0100, Matthew Wilcox wrote:
> I'm out of ideas. Maybe I'll wake up with a better idea in the morning.
> I've been trying to reproduce this on x86 with a 1kB block size
> filesystem, and haven't been able to yet. Maybe I'll try to setup a
> powerpc cross-compilation environment tomorrow.
Another data point is that this can be reproduced on both arm64 and powerpc
(both have 64k-size pages) by running this LTP test case:
https://github.com/linux-test-project/ltp/blob/master/testcases/kernel/syscalls/preadv2/preadv203.c
[ 2397.723289] preadv203 (80525): drop_caches: 3
[ 2400.796402] XFS (loop0): Unmounting Filesystem
[ 2401.431293] ------------[ cut here ]------------
[ 2401.431411] WARNING: CPU: 0 PID: 80501 at fs/iomap/buffered-io.c:78 iomap_page_release+0x250/0x270
[ 2401.431435] Modules linked in: vfio_pci vfio_virqfd vfio_iommu_spapr_tce vfio vfio_spapr_eeh loop kvm_hv kvm ip_tables x_tables sd_mod bnx2x mdio ahci libahci tg3 libphy libata firmware_class dm_mirror dm_reg
ion_hash dm_log dm_mod
[ 2401.431534] CPU: 0 PID: 80501 Comm: preadv203 Not tainted 5.9.0-rc6-next-20200923+ #4
[ 2401.431567] NIP: c000000000473b30 LR: c0000000004739ec CTR: c000000000473e80
[ 2401.431590] REGS: c0000011a7bbf7a0 TRAP: 0700 Not tainted (5.9.0-rc6-next-20200923+)
[ 2401.431613] MSR: 9000000000029033 <SF,HV,EE,ME,IR,DR,RI,LE> CR: 44000244 XER: 20040000
[ 2401.431655] CFAR: c000000000473a24 IRQMASK: 0
GPR00: c00000000029b6a8 c0000011a7bbfa30 c000000007e87e00 0000000000000005
GPR04: 0000000000000000 0000000000000005 0000000000000005 0000000000000000
GPR08: c00c000806f1f587 087fff8000000037 0000000000000001 c00000000875e028
GPR12: c000000000473e80 c00000000c180000 0000000000000000 0000000000000000
GPR16: 0000000000000000 c0000011a7bbfbb0 c0000011a7bbfbc0 0000000000000000
GPR20: c000000000a4aad8 0000000000000000 0000000000000000 000000000000000f
GPR24: ffffffffffffffff c0000011a7bbfb38 c0000011a7bbfac0 0000000000000000
GPR28: 0000000000000001 c000000ea4fe0a28 0000000000000000 c00c0008071b46c0
[ 2401.431856] NIP [c000000000473b30] iomap_page_release+0x250/0x270
[ 2401.431878] LR [c0000000004739ec] iomap_page_release+0x10c/0x270
[ 2401.431899] Call Trace:
[ 2401.431926] [c0000011a7bbfa30] [c0000011a7bbfac0] 0xc0000011a7bbfac0 (unreliable)
[ 2401.431962] [c0000011a7bbfa70] [c00000000029b6a8] truncate_cleanup_page+0x188/0x2e0
[ 2401.431987] [c0000011a7bbfaa0] [c00000000029c62c] truncate_inode_pages_range+0x23c/0x9f0
[ 2401.432023] [c0000011a7bbfcc0] [c0000000003d9588] evict+0x1e8/0x200
[ 2401.432055] [c0000011a7bbfd00] [c0000000003c64b0] do_unlinkat+0x2d0/0x3a0
[ 2401.432081] [c0000011a7bbfdc0] [c00000000002a458] system_call_exception+0xf8/0x1d0
[ 2401.432097] [c0000011a7bbfe20] [c00000000000d0a8] system_call_common+0xe8/0x218
[ 2401.432120] Instruction dump:
[ 2401.432140] 3c82f8ba 388490b8 4be655b1 60000000 0fe00000 60000000 60000000 60000000
[ 2401.432176] 0fe00000 4bfffea8 60000000 60000000 <0fe00000> 4bfffef4 60000000 60000000
[ 2401.432213] CPU: 0 PID: 80501 Comm: preadv203 Not tainted 5.9.0-rc6-next-20200923+ #4
[ 2401.432245] Call Trace:
[ 2401.432255] [c0000011a7bbf590] [c000000000644778] dump_stack+0xec/0x144 (unreliable)
[ 2401.432284] [c0000011a7bbf5d0] [c0000000000b0a24] __warn+0xc4/0x144
[ 2401.432298] [c0000011a7bbf660] [c000000000643388] report_bug+0x108/0x1f0
[ 2401.432331] [c0000011a7bbf700] [c000000000021714] program_check_exception+0x104/0x2e0
[ 2401.432359] [c0000011a7bbf730] [c000000000009664] program_check_common_virt+0x2c4/0x310
[ 2401.432385] --- interrupt: 700 at iomap_page_release+0x250/0x270
LR = iomap_page_release+0x10c/0x270
[ 2401.432420] [c0000011a7bbfa30] [c0000011a7bbfac0] 0xc0000011a7bbfac0 (unreliable)
[ 2401.432446] [c0000011a7bbfa70] [c00000000029b6a8] truncate_cleanup_page+0x188/0x2e0
[ 2401.432470] [c0000011a7bbfaa0] [c00000000029c62c] truncate_inode_pages_range+0x23c/0x9f0
[ 2401.432505] [c0000011a7bbfcc0] [c0000000003d9588] evict+0x1e8/0x200
[ 2401.432528] [c0000011a7bbfd00] [c0000000003c64b0] do_unlinkat+0x2d0/0x3a0
[ 2401.432552] [c0000011a7bbfdc0] [c00000000002a458] system_call_exception+0xf8/0x1d0
[ 2401.432576] [c0000011a7bbfe20] [c00000000000d0a8] system_call_common+0xe8/0x218
[ 2401.432599] irq event stamp: 210662
[ 2401.432619] hardirqs last enabled at (210661): [<c0000000008d32bc>] _raw_spin_unlock_irq+0x3c/0x70
[ 2401.432652] hardirqs last disabled at (210662): [<c00000000000965c>] program_check_common_virt+0x2bc/0x310
[ 2401.432688] softirqs last enabled at (210280): [<c000000000547de4>] xfs_buf_find.isra.31+0xb54/0x1060
[ 2401.432722] softirqs last disabled at (210278): [<c0000000005476fc>] xfs_buf_find.isra.31+0x46c/0x1060
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next prev parent reply other threads:[~2020-09-23 16:55 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-10 23:46 [PATCH v2 0/9] THP iomap patches for 5.10 Matthew Wilcox (Oracle)
2020-09-10 23:46 ` [PATCH v2 1/9] iomap: Fix misplaced page flushing Matthew Wilcox (Oracle)
2020-09-10 23:47 ` [PATCH v2 2/9] fs: Introduce i_blocks_per_page Matthew Wilcox (Oracle)
2020-09-15 14:58 ` Dave Kleikamp
2020-09-15 15:40 ` David Laight
2020-09-15 15:49 ` Matthew Wilcox
2020-09-10 23:47 ` [PATCH v2 3/9] iomap: Use kzalloc to allocate iomap_page Matthew Wilcox (Oracle)
2020-09-10 23:47 ` [PATCH v2 4/9] iomap: Use bitmap ops to set uptodate bits Matthew Wilcox (Oracle)
2020-09-10 23:47 ` [PATCH v2 5/9] iomap: Support arbitrarily many blocks per page Matthew Wilcox (Oracle)
2020-09-11 5:36 ` Christoph Hellwig
2020-09-17 22:00 ` Darrick J. Wong
2020-09-22 16:23 ` Qian Cai
2020-09-22 17:05 ` Matthew Wilcox
2020-09-22 17:25 ` Qian Cai
2020-09-23 1:06 ` Qian Cai
2020-09-23 2:48 ` Matthew Wilcox
2020-09-23 5:00 ` Darrick J. Wong
2020-09-23 18:59 ` Matthew Wilcox
2020-09-23 16:55 ` Qian Cai [this message]
2020-09-24 1:07 ` Matthew Wilcox
2020-09-10 23:47 ` [PATCH v2 6/9] iomap: Convert read_count to read_bytes_pending Matthew Wilcox (Oracle)
2020-09-11 5:36 ` Christoph Hellwig
2020-09-17 22:02 ` Darrick J. Wong
2020-09-10 23:47 ` [PATCH v2 7/9] iomap: Convert write_count to write_bytes_pending Matthew Wilcox (Oracle)
2020-09-17 22:02 ` Darrick J. Wong
2020-09-10 23:47 ` [PATCH v2 8/9] iomap: Convert iomap_write_end types Matthew Wilcox (Oracle)
2020-09-17 22:03 ` Darrick J. Wong
2020-09-10 23:47 ` [PATCH v2 9/9] iomap: Change calling convention for zeroing Matthew Wilcox (Oracle)
2020-09-11 6:42 ` Christoph Hellwig
2020-09-17 22:05 ` Darrick J. Wong
2020-09-17 22:11 ` Matthew Wilcox
2020-09-17 22:18 ` Darrick J. Wong
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