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: 15256 Comm: syz-executor.1 Not tainted 5.4.0-rc6+ #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:988 [inline] RIP: 0010:j1939_sk_sendmsg+0x6d6/0x1450 net/can/j1939/socket.c:1105 Code: e8 1f f1 f3 fa 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 60 ff ff ff 48 8b 85 20 ff ff ff <80> 38 00 0f 85 fa 0a 00 00 48 8b 85 40 ff ff ff 48 8b 58 48 48 8b RSP: 0018:ffff8880812cfa28 EFLAGS: 00010297 RAX: dffffc0000000009 RBX: 00000000000001f3 RCX: 00000000000001f3 RDX: 0000000000000000 RSI: ffffffff867f33c1 RDI: 0000000000000007 RBP: ffff8880812cfb40 R08: ffff888091df60c0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff8880a8d17510 R14: 0000000000000000 R15: 0000000000000000 FS: 00007fe7b4e58700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4e447c8518 CR3: 0000000097ed7000 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+0xd7/0x130 net/socket.c:657 ___sys_sendmsg+0x803/0x920 net/socket.c:2311 __sys_sendmsg+0x105/0x1d0 net/socket.c:2356 __do_sys_sendmsg net/socket.c:2365 [inline] __se_sys_sendmsg net/socket.c:2363 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2363 do_syscall_64+0xfa/0x760 arch/x86/entry/common.c:290 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:00007fe7b4e57c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a219 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000004 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe7b4e586d4 R13: 00000000004c804e R14: 00000000004de4d0 R15: 00000000ffffffff Modules linked in: ---[ end trace 6e60be9b4db2affd ]--- RIP: 0010:j1939_sk_send_loop net/can/j1939/socket.c:988 [inline] RIP: 0010:j1939_sk_sendmsg+0x6d6/0x1450 net/can/j1939/socket.c:1105 Code: e8 1f f1 f3 fa 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 60 ff ff ff 48 8b 85 20 ff ff ff <80> 38 00 0f 85 fa 0a 00 00 48 8b 85 40 ff ff ff 48 8b 58 48 48 8b RSP: 0018:ffff8880812cfa28 EFLAGS: 00010297 RAX: dffffc0000000009 RBX: 00000000000001f3 RCX: 00000000000001f3 RDX: 0000000000000000 RSI: ffffffff867f33c1 RDI: 0000000000000007 RBP: ffff8880812cfb40 R08: ffff888091df60c0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff8880a8d17510 R14: 0000000000000000 R15: 0000000000000000 FS: 00007fe7b4e58700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd08c8af68 CR3: 0000000097ed7000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400