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| author | Chuck Lever <chuck.lever@oracle.com> | 2020-09-20 13:46:25 -0400 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2020-09-21 10:13:25 -0400 |
| commit | 13a9a9d74d4d9689ad65938966dbc66386063648 (patch) | |
| tree | 8aaf12ccae1ba274d94c44a74d8e90209b251aba /net/ethernet | |
| parent | ba4f184e126b751d1bffad5897f263108befc780 (diff) | |
| download | linux-13a9a9d74d4d9689ad65938966dbc66386063648.tar.bz2 | |
SUNRPC: Fix svc_flush_dcache()
On platforms that implement flush_dcache_page(), a large NFS WRITE
triggers the WARN_ONCE in bvec_iter_advance():
Sep 20 14:01:05 klimt.1015granger.net kernel: Attempted to advance past end of bvec iter
Sep 20 14:01:05 klimt.1015granger.net kernel: WARNING: CPU: 0 PID: 1032 at include/linux/bvec.h:101 bvec_iter_advance.isra.0+0xa7/0x158 [sunrpc]
Sep 20 14:01:05 klimt.1015granger.net kernel: Call Trace:
Sep 20 14:01:05 klimt.1015granger.net kernel: svc_tcp_recvfrom+0x60c/0x12c7 [sunrpc]
Sep 20 14:01:05 klimt.1015granger.net kernel: ? bvec_iter_advance.isra.0+0x158/0x158 [sunrpc]
Sep 20 14:01:05 klimt.1015granger.net kernel: ? del_timer_sync+0x4b/0x55
Sep 20 14:01:05 klimt.1015granger.net kernel: ? test_bit+0x1d/0x27 [sunrpc]
Sep 20 14:01:05 klimt.1015granger.net kernel: svc_recv+0x1193/0x15e4 [sunrpc]
Sep 20 14:01:05 klimt.1015granger.net kernel: ? try_to_freeze.isra.0+0x6f/0x6f [sunrpc]
Sep 20 14:01:05 klimt.1015granger.net kernel: ? refcount_sub_and_test.constprop.0+0x13/0x40 [sunrpc]
Sep 20 14:01:05 klimt.1015granger.net kernel: ? svc_xprt_put+0x1e/0x29f [sunrpc]
Sep 20 14:01:05 klimt.1015granger.net kernel: ? svc_send+0x39f/0x3c1 [sunrpc]
Sep 20 14:01:05 klimt.1015granger.net kernel: nfsd+0x282/0x345 [nfsd]
Sep 20 14:01:05 klimt.1015granger.net kernel: ? __kthread_parkme+0x74/0xba
Sep 20 14:01:05 klimt.1015granger.net kernel: kthread+0x2ad/0x2bc
Sep 20 14:01:05 klimt.1015granger.net kernel: ? nfsd_destroy+0x124/0x124 [nfsd]
Sep 20 14:01:05 klimt.1015granger.net kernel: ? test_bit+0x1d/0x27
Sep 20 14:01:05 klimt.1015granger.net kernel: ? kthread_mod_delayed_work+0x115/0x115
Sep 20 14:01:05 klimt.1015granger.net kernel: ret_from_fork+0x22/0x30
Reported-by: He Zhe <zhe.he@windriver.com>
Fixes: ca07eda33e01 ("SUNRPC: Refactor svc_recvfrom()")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'net/ethernet')
0 files changed, 0 insertions, 0 deletions