kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 0 PID: 4541 Comm: syz-executor2 Not tainted 4.15.0-rc2+ #214 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__read_once_size include/linux/compiler.h:183 [inline] RIP: 0010:compound_head include/linux/page-flags.h:147 [inline] RIP: 0010:page_mapping+0xa4/0x530 mm/util.c:475 RSP: 0018:ffff8801c701f320 EFLAGS: 00010202 RAX: 0000000000000004 RBX: 1ffff10038e03e65 RCX: ffffffff8195002d RDX: 00000000000007d0 RSI: ffffc90001f1f000 RDI: 0000000000000000 RBP: ffff8801c701f470 R08: ffffed0038d1d8e4 R09: ffff8801c68ec700 R10: ffff8801cad89118 R11: ffffed0038d1d8e3 R12: 0000000000000000 R13: ffff8801c701f448 R14: dffffc0000000000 R15: 0000000000000020 FS: 00007f77262ba700(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002084d038 CR3: 00000001ca484000 CR4: 00000000001406f0 DR0: 0000000020000008 DR1: 0000000020000008 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: set_page_dirty+0xb9/0x5d0 mm/page-writeback.c:2544 rds_atomic_free_op+0xc2/0x330 net/rds/rdma.c:481 rds_message_purge net/rds/message.c:79 [inline] rds_message_put+0x53c/0x6b0 net/rds/message.c:91 rds_sendmsg+0x14ee/0x1f90 net/rds/send.c:1204 sock_sendmsg_nosec net/socket.c:636 [inline] sock_sendmsg+0xca/0x110 net/socket.c:646 ___sys_sendmsg+0x75b/0x8a0 net/socket.c:2026 __sys_sendmsg+0xe5/0x210 net/socket.c:2060 SYSC_sendmsg net/socket.c:2071 [inline] SyS_sendmsg+0x2d/0x50 net/socket.c:2067 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x452a39 RSP: 002b:00007f77262b9c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000007580d8 RCX: 0000000000452a39 RDX: 0000000000000000 RSI: 0000000020159fc8 RDI: 0000000000000016 RBP: 0000000000000020 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006ee3a0 R13: 00000000ffffffff R14: 00007f77262ba6d4 R15: 000000000000000d Code: f2 f2 f2 c7 40 14 00 f2 f2 f2 c7 40 18 f2 f2 f2 f2 c7 40 1c 00 f2 f2 f2 c7 40 20 f3 f3 f3 f3 e8 e3 37 db ff 4c 89 f8 48 c1 e8 03 <42> 80 3c 30 00 0f 85 41 04 00 00 4d 8d b5 00 ff ff ff 48 ba 00 RIP: __read_once_size include/linux/compiler.h:183 [inline] RSP: ffff8801c701f320 RIP: compound_head include/linux/page-flags.h:147 [inline] RSP: ffff8801c701f320 RIP: page_mapping+0xa4/0x530 mm/util.c:475 RSP: ffff8801c701f320 ---[ end trace 1833e46470977c86 ]--- Kernel panic - not syncing: Fatal exception Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..