On Fri, Sep 30, 2016 at 01:42:17PM -0400, CAI Qian wrote: > [ 1599.151286] ------------[ cut here ]------------ > [ 1599.156457] WARNING: CPU: 37 PID: 95143 at lib/iov_iter.c:316 sanity+0x75/0x80 [snip] > [ 1599.344171] [<ffffffff813e9b45>] sanity+0x75/0x80 > [ 1599.349518] [<ffffffff813ec739>] copy_page_to_iter+0xf9/0x1e0 > [ 1599.356027] [<ffffffff8120691f>] shmem_file_read_iter+0x9f/0x340 > [ 1599.362829] [<ffffffff812bbeb9>] generic_file_splice_read+0xb9/0x1b0 > [ 1599.370015] [<ffffffff812bc206>] do_splice_to+0x76/0x90 > [ 1599.375941] [<ffffffff812bc2db>] splice_direct_to_actor+0xbb/0x220 > [ 1599.382935] [<ffffffff812bba80>] ? generic_pipe_buf_nosteal+0x10/0x10 > [ 1599.390220] [<ffffffff812bc4d8>] do_splice_direct+0x98/0xd0 > [ 1599.396537] [<ffffffff81281dd1>] do_sendfile+0x1d1/0x3b0 > [ 1599.402563] [<ffffffff81282973>] SyS_sendfile64+0x73/0xd0 > [ 1599.408685] [<ffffffff81003f8c>] do_syscall_64+0x6c/0x1e0 > [ 1599.414820] [<ffffffff817d927f>] entry_SYSCALL64_slow_path+0x25/0x25 IOW, sendfile from shmem... How easily is that reproduced (IOW, did you get any more of those)? -- To unsubscribe from this list: send the line "unsubscribe linux-xfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
