general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 1 PID: 17878 Comm: modprobe Not tainted 5.5.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:do_last fs/namei.c:3336 [inline] RIP: 0010:path_openat+0x281/0x3460 fs/namei.c:3607 Code: ff df 48 c1 ea 03 80 3c 02 00 0f 85 76 29 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5c 24 58 48 8d 7b 04 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 28 RSP: 0018:ffffc90001bf7a40 EFLAGS: 00010247 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff81c24369 RDX: 0000000000000000 RSI: ffffffff81c24376 RDI: 0000000000000004 RBP: ffffc90001bf7b90 R08: ffff88809067c040 R09: ffffed1012256ea1 R10: ffffed1012256ea0 R11: ffff8880912b7500 R12: ffff8880912b74a0 R13: ffff88809067c040 R14: ffffc90001bf7d98 R15: ffffc90001bf7bd0 FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b3002b000 CR3: 00000000a3493000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_filp_open+0x192/0x260 fs/namei.c:3637 do_sys_openat2+0x5eb/0x7e0 fs/open.c:1149 do_sys_open+0xf2/0x180 fs/open.c:1165 ksys_open include/linux/syscalls.h:1386 [inline] __do_sys_open fs/open.c:1171 [inline] __se_sys_open fs/open.c:1169 [inline] __x64_sys_open+0x7e/0xc0 fs/open.c:1169 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f3b563e41a7 Code: c3 66 90 c7 05 fa af 20 00 16 00 00 00 b8 ff ff ff ff c3 f7 d8 89 05 ec af 20 00 83 c8 ff c3 90 90 90 90 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8d 0d cd af 20 00 31 d2 48 29 c2 89 RSP: 002b:00007ffca5c30e88 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 000055b11d1205c1 RCX: 00007f3b563e41a7 RDX: 0000000000000001 RSI: 0000000000000000 RDI: 00007f3b563e8282 RBP: 0000000000000001 R08: 00007f3b565ef570 R09: 0000000000000000 R10: ffffffffffffffb0 R11: 0000000000000246 R12: 00007f3b565ef090 R13: 00007f3b565ee040 R14: 0000000000000000 R15: 00007f3b565ef570 Modules linked in: ---[ end trace 64aaf44bc652e726 ]--- RIP: 0010:do_last fs/namei.c:3336 [inline] RIP: 0010:path_openat+0x281/0x3460 fs/namei.c:3607 Code: ff df 48 c1 ea 03 80 3c 02 00 0f 85 76 29 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5c 24 58 48 8d 7b 04 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 28 RSP: 0018:ffffc90001bf7a40 EFLAGS: 00010247 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff81c24369 RDX: 0000000000000000 RSI: ffffffff81c24376 RDI: 0000000000000004 RBP: ffffc90001bf7b90 R08: ffff88809067c040 R09: ffffed1012256ea1 R10: ffffed1012256ea0 R11: ffff8880912b7500 R12: ffff8880912b74a0 R13: ffff88809067c040 R14: ffffc90001bf7d98 R15: ffffc90001bf7bd0 FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000029409b8 CR3: 00000000a3493000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400