general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 0 PID: 16846 Comm: syz-executor.1 Not tainted 5.18.0-rc6-syzkaller-00009-gfeb9c5e19e91 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:hlist_add_head_rcu include/linux/rculist.h:587 [inline] RIP: 0010:can_rx_register+0x365/0x6a0 net/can/af_can.c:477 Code: ee 03 49 89 4f 30 80 3c 16 00 0f 85 e3 02 00 00 48 8b 4c 24 18 48 89 c6 48 ba 00 00 00 00 00 fc ff df 48 c1 ee 03 49 89 4f 38 <80> 3c 16 00 0f 85 aa 02 00 00 48 ba 00 00 00 00 00 fc ff df 4c 89 RSP: 0018:ffffc90004b2fc10 EFLAGS: 00010202 RAX: 0000000000000008 RBX: 0000000000000000 RCX: ffff888028732000 RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff8880759e11f8 RBP: ffff888020254ac0 R08: 0000000000000000 R09: 0000000000000003 R10: ffffffff8843ead9 R11: 0000000000000000 R12: 0000000000000000 R13: 1ffff92000965f87 R14: ffff888041043948 R15: ffff8880759e11c0 FS: 00007fe2067f1700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6b3fed6a58 CR3: 000000001b6f5000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: raw_enable_filters+0xe2/0x200 net/can/raw.c:193 raw_enable_allfilters+0x82/0x290 net/can/raw.c:259 raw_bind+0x2ba/0xb50 net/can/raw.c:455 __sys_bind+0x1e9/0x250 net/socket.c:1697 __do_sys_bind net/socket.c:1708 [inline] __se_sys_bind net/socket.c:1706 [inline] __x64_sys_bind+0x6f/0xb0 net/socket.c:1706 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fe2056890e9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fe2067f1168 EFLAGS: 00000246 ORIG_RAX: 0000000000000031 RAX: ffffffffffffffda RBX: 00007fe20579bf60 RCX: 00007fe2056890e9 RDX: 0000000000000010 RSI: 0000000020000040 RDI: 0000000000000004 RBP: 00007fe2056e308d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc4f71e12f R14: 00007fe2067f1300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:hlist_add_head_rcu include/linux/rculist.h:587 [inline] RIP: 0010:can_rx_register+0x365/0x6a0 net/can/af_can.c:477 Code: ee 03 49 89 4f 30 80 3c 16 00 0f 85 e3 02 00 00 48 8b 4c 24 18 48 89 c6 48 ba 00 00 00 00 00 fc ff df 48 c1 ee 03 49 89 4f 38 <80> 3c 16 00 0f 85 aa 02 00 00 48 ba 00 00 00 00 00 fc ff df 4c 89 RSP: 0018:ffffc90004b2fc10 EFLAGS: 00010202 RAX: 0000000000000008 RBX: 0000000000000000 RCX: ffff888028732000 RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff8880759e11f8 RBP: ffff888020254ac0 R08: 0000000000000000 R09: 0000000000000003 R10: ffffffff8843ead9 R11: 0000000000000000 R12: 0000000000000000 R13: 1ffff92000965f87 R14: ffff888041043948 R15: ffff8880759e11c0 FS: 00007fe2067f1700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6b3fed6a58 CR3: 000000001b6f5000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: ee out %al,(%dx) 1: 03 49 89 add -0x77(%rcx),%ecx 4: 4f 30 80 3c 16 00 0f rex.WRXB xor %r8b,0xf00163c(%r8) b: 85 e3 test %esp,%ebx d: 02 00 add (%rax),%al f: 00 48 8b add %cl,-0x75(%rax) 12: 4c 24 18 rex.WR and $0x18,%al 15: 48 89 c6 mov %rax,%rsi 18: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 1f: fc ff df 22: 48 c1 ee 03 shr $0x3,%rsi 26: 49 89 4f 38 mov %rcx,0x38(%r15) * 2a: 80 3c 16 00 cmpb $0x0,(%rsi,%rdx,1) <-- trapping instruction 2e: 0f 85 aa 02 00 00 jne 0x2de 34: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 3b: fc ff df 3e: 4c rex.WR 3f: 89 .byte 0x89