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: 2434 Comm: syz-executor.4 Not tainted 5.9.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:jffs2_parse_param+0x141/0x330 fs/jffs2/super.c:206 Code: 48 c1 ea 03 4d 63 fc 80 3c 02 00 0f 85 de 01 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 75 00 49 8d 7e 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 c8 01 00 00 4d 8b 76 08 4c 89 ff 4c 89 f6 e8 d6 RSP: 0018:ffffc90016bb7b78 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff888049bdbc00 RCX: ffffc90010d96000 RDX: 0000000000000001 RSI: ffffffff82882096 RDI: 0000000000000008 RBP: 1ffff92002d76f6f R08: 0000000000000001 R09: 0000000000000003 R10: 00000000003fffff R11: 0000000000000000 R12: 0000000000000000 R13: ffff88803aa40000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f05a6a2f700(0000) GS:ffff8880ae400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000768000 CR3: 000000004a729000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: vfs_parse_fs_param fs/fs_context.c:117 [inline] vfs_parse_fs_param+0x203/0x550 fs/fs_context.c:98 vfs_parse_fs_string+0xe6/0x150 fs/fs_context.c:161 generic_parse_monolithic+0x16f/0x1f0 fs/fs_context.c:201 do_new_mount fs/namespace.c:2871 [inline] path_mount+0x133f/0x20a0 fs/namespace.c:3192 do_mount fs/namespace.c:3205 [inline] __do_sys_mount fs/namespace.c:3413 [inline] __se_sys_mount fs/namespace.c:3390 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3390 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x46004a Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 fd 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 da 89 fb ff c3 66 0f 1f 84 00 00 00 00 00 RSP: 002b:00007f05a6a2ea88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f05a6a2eb20 RCX: 000000000046004a RDX: 0000000020001300 RSI: 0000000020001340 RDI: 0000000000000000 RBP: 00007f05a6a2eae0 R08: 00007f05a6a2eb20 R09: 0000000020001300 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020001300 R13: 0000000020001340 R14: 0000000000000000 R15: 00000000200024c0 Modules linked in: ---[ end trace dbd3acd6ae893f23 ]--- RIP: 0010:jffs2_parse_param+0x141/0x330 fs/jffs2/super.c:206 Code: 48 c1 ea 03 4d 63 fc 80 3c 02 00 0f 85 de 01 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 75 00 49 8d 7e 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 c8 01 00 00 4d 8b 76 08 4c 89 ff 4c 89 f6 e8 d6 RSP: 0018:ffffc90016bb7b78 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff888049bdbc00 RCX: ffffc90010d96000 RDX: 0000000000000001 RSI: ffffffff82882096 RDI: 0000000000000008 RBP: 1ffff92002d76f6f R08: 0000000000000001 R09: 0000000000000003 R10: 00000000003fffff R11: 0000000000000000 R12: 0000000000000000 R13: ffff88803aa40000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f05a6a2f700(0000) GS:ffff8880ae400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000001590004 CR3: 000000004a729000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400