kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 11291 Comm: syz-executor.3 Not tainted 5.3.0-rc7+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:j1939_sk_send_loop net/can/j1939/socket.c:983 [inline] RIP: 0010:j1939_sk_sendmsg+0x596/0x1260 net/can/j1939/socket.c:1100 Code: 84 6b 07 00 00 48 8b 8d 50 ff ff ff b8 f9 06 00 00 48 81 f9 f9 06 00 00 48 0f 46 c1 48 89 85 68 ff ff ff 48 8b 85 38 ff ff ff <80> 38 00 0f 85 36 09 00 00 48 8b 85 48 ff ff ff 48 8b 58 48 48 8b RSP: 0018:ffff88808195f9e0 EFLAGS: 00010283 RAX: dffffc0000000009 RBX: 0000000000000000 RCX: 0000000000000009 RDX: 1ffffffff10653d4 RSI: ffff88808195fe88 RDI: ffffffff88329ea0 RBP: ffff88808195faf0 R08: 0000000000000006 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809bdc4340 R13: ffff88809bdc4888 R14: 0000000000000000 R15: dffffc0000000000 FS: 00007fd368dfc700(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000075c000 CR3: 00000000985cf000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg+0xb5/0xf0 net/socket.c:657 ___sys_sendmsg+0x647/0x950 net/socket.c:2311 __sys_sendmsg+0xd9/0x180 net/socket.c:2356 __do_sys_sendmsg net/socket.c:2365 [inline] __se_sys_sendmsg net/socket.c:2363 [inline] __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2363 do_syscall_64+0xd0/0x540 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a219 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fd368dfbc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a219 RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000003 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd368dfc6d4 R13: 00000000004c8692 R14: 00000000004dec20 R15: 00000000ffffffff Modules linked in: ---[ end trace 3fff0a5584e80471 ]--- RIP: 0010:j1939_sk_send_loop net/can/j1939/socket.c:983 [inline] RIP: 0010:j1939_sk_sendmsg+0x596/0x1260 net/can/j1939/socket.c:1100 Code: 84 6b 07 00 00 48 8b 8d 50 ff ff ff b8 f9 06 00 00 48 81 f9 f9 06 00 00 48 0f 46 c1 48 89 85 68 ff ff ff 48 8b 85 38 ff ff ff <80> 38 00 0f 85 36 09 00 00 48 8b 85 48 ff ff ff 48 8b 58 48 48 8b RSP: 0018:ffff88808195f9e0 EFLAGS: 00010283 RAX: dffffc0000000009 RBX: 0000000000000000 RCX: 0000000000000009 RDX: 1ffffffff10653d4 RSI: ffff88808195fe88 RDI: ffffffff88329ea0 RBP: ffff88808195faf0 R08: 0000000000000006 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809bdc4340 R13: ffff88809bdc4888 R14: 0000000000000000 R15: dffffc0000000000 FS: 00007fd368dfc700(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000075c000 CR3: 00000000985cf000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400