general protection fault, probably for non-canonical address 0xe000080fe8c0715d: 0000 [#1] PREEMPT SMP KASAN KASAN: probably user-memory-access in range [0x0000607f46038ae8-0x0000607f46038aef] CPU: 0 PID: 8458 Comm: syz-executor793 Not tainted 5.10.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:j1939_ndev_to_priv net/can/j1939/main.c:219 [inline] RIP: 0010:j1939_priv_get_by_ndev_locked net/can/j1939/main.c:231 [inline] RIP: 0010:j1939_priv_get_by_ndev net/can/j1939/main.c:243 [inline] RIP: 0010:j1939_netdev_notify+0x115/0x320 net/can/j1939/main.c:353 Code: 00 74 08 48 89 df e8 ba 1e 48 f9 48 8b 1b 48 85 db 0f 84 f0 00 00 00 4c 89 64 24 08 48 81 c3 28 60 00 00 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 df e8 8c 1e 48 f9 4c 8b 23 4d 85 e4 0f RSP: 0018:ffffc90000eefd68 EFLAGS: 00010202 RAX: 00000c0fe8c0715d RBX: 0000607f46038ae8 RCX: ffff88801aacd040 RDX: ffff88801aacd040 RSI: 0000000000000118 RDI: 0000000000000118 RBP: 0000000000000118 R08: ffffffff8870585d R09: fffff520001ddfa5 R10: fffff520001ddfa5 R11: 0000000000000000 R12: 0000000000000010 R13: 1ffff1100433b848 R14: dffffc0000000000 R15: ffff8880219dc244 FS: 0000000000ee2880(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000080 CR3: 0000000011969000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: notifier_call_chain kernel/notifier.c:83 [inline] raw_notifier_call_chain+0xe7/0x170 kernel/notifier.c:410 call_netdevice_notifiers_info net/core/dev.c:2022 [inline] call_netdevice_notifiers_extack net/core/dev.c:2034 [inline] call_netdevice_notifiers+0xeb/0x150 net/core/dev.c:2048 __tun_chr_ioctl+0x2337/0x4860 drivers/net/tun.c:3093 vfs_ioctl fs/ioctl.c:48 [inline] __do_sys_ioctl fs/ioctl.c:753 [inline] __se_sys_ioctl+0xfb/0x170 fs/ioctl.c:739 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x440359 Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 0f 83 7b 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffca62897c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440359 RDX: 0000000000000118 RSI: 00000000400454cd RDI: 0000000000000003 RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401b60 R13: 0000000000401bf0 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace ad4621c7c2384608 ]--- RIP: 0010:j1939_ndev_to_priv net/can/j1939/main.c:219 [inline] RIP: 0010:j1939_priv_get_by_ndev_locked net/can/j1939/main.c:231 [inline] RIP: 0010:j1939_priv_get_by_ndev net/can/j1939/main.c:243 [inline] RIP: 0010:j1939_netdev_notify+0x115/0x320 net/can/j1939/main.c:353 Code: 00 74 08 48 89 df e8 ba 1e 48 f9 48 8b 1b 48 85 db 0f 84 f0 00 00 00 4c 89 64 24 08 48 81 c3 28 60 00 00 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 df e8 8c 1e 48 f9 4c 8b 23 4d 85 e4 0f RSP: 0018:ffffc90000eefd68 EFLAGS: 00010202 RAX: 00000c0fe8c0715d RBX: 0000607f46038ae8 RCX: ffff88801aacd040 RDX: ffff88801aacd040 RSI: 0000000000000118 RDI: 0000000000000118 RBP: 0000000000000118 R08: ffffffff8870585d R09: fffff520001ddfa5 R10: fffff520001ddfa5 R11: 0000000000000000 R12: 0000000000000010 R13: 1ffff1100433b848 R14: dffffc0000000000 R15: ffff8880219dc244 FS: 0000000000ee2880(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000080 CR3: 0000000011969000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400