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: 9729 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:proc_kill_sb+0x4d/0x110 fs/proc/root.c:267 Code: c1 ea 03 80 3c 02 00 0f 85 ad 00 00 00 49 8b ac 24 68 06 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7d 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 a1 00 00 00 4c 8b 6d 08 4d 85 ed 74 0d e8 cb 51 RSP: 0018:ffffc90001677d60 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffc90001eb9000 RDX: 0000000000000001 RSI: ffffffff81e37c9d RDI: 0000000000000008 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff8c347a2f R11: fffffbfff1868f45 R12: ffff8880590c2000 R13: 00000000fffffff4 R14: 0000000000000000 R15: ffff8880590c2068 FS: 00007f1537c4b700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c001d51004 CR3: 00000000a7d72000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: deactivate_locked_super+0x8c/0xf0 fs/super.c:335 vfs_get_super+0x258/0x2d0 fs/super.c:1212 vfs_get_tree+0x89/0x2f0 fs/super.c:1547 vfs_fsconfig_locked+0x22c/0x3c0 fs/fsopen.c:232 __do_sys_fsconfig fs/fsopen.c:439 [inline] __se_sys_fsconfig fs/fsopen.c:314 [inline] __x64_sys_fsconfig+0x621/0x860 fs/fsopen.c:314 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x49/0xb3 RIP: 0033:0x45ca69 Code: 0d b7 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 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f1537c4ac78 EFLAGS: 00000246 ORIG_RAX: 00000000000001af RAX: ffffffffffffffda RBX: 00000000004dc600 RCX: 000000000045ca69 RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000004 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 R13: 00000000000000d4 R14: 00000000004d1e80 R15: 00007f1537c4b6d4 Modules linked in: ---[ end trace 28a92310c02a002c ]--- RIP: 0010:proc_kill_sb+0x4d/0x110 fs/proc/root.c:267 Code: c1 ea 03 80 3c 02 00 0f 85 ad 00 00 00 49 8b ac 24 68 06 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7d 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 a1 00 00 00 4c 8b 6d 08 4d 85 ed 74 0d e8 cb 51 RSP: 0018:ffffc90001677d60 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffc90001eb9000 RDX: 0000000000000001 RSI: ffffffff81e37c9d RDI: 0000000000000008 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff8c347a2f R11: fffffbfff1868f45 R12: ffff8880590c2000 R13: 00000000fffffff4 R14: 0000000000000000 R15: ffff8880590c2068 FS: 00007f1537c4b700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000556951967160 CR3: 00000000a7d72000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400