Hi Dave, On 08/11/17 02:52 PM, Dave Jones wrote: > kernel BUG at ./include/linux/scatterlist.h:189! > invalid opcode: 0000 [#1] SMP KASAN
... > Call Trace: > ? copy_page_to_iter+0x6c0/0x6c0 > tls_sw_sendmsg+0x6d8/0x9c0 > ? alloc_sg+0x510/0x510 > ? cyc2ns_read_end+0x10/0x10 > ? import_iovec+0xa8/0x1f0 > ? do_syscall_64+0x1bc/0x3e0 > ? entry_SYSCALL64_slow_path+0x25/0x25 > inet_sendmsg+0xce/0x310 ... > 186 static inline void sg_mark_end(struct scatterlist *sg) > 187 { > 188 #ifdef CONFIG_DEBUG_SG > 189 BUG_ON(sg->sg_magic != SG_MAGIC); > 190 #endif +added mellanox folks I haven't seen this one yet. The specific sequence of sendmsg/sendpage calls would probably be super helpful to nail it down Thanks