RDX: 0000000020000040 RSI: 0000000020000380 RDI: 0000000000000000 RBP: 00007f82b1bc3120 R08: 0000000020000400 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 0000000000000006 R14: 00007f82b215ff80 R15: 00007ffd2df4e428 BUG: kernel NULL pointer dereference, address: 0000000000000004 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 103346067 P4D 103346067 PUD 1096ae067 PMD 0 Oops: 0002 [#1] PREEMPT SMP CPU: 0 PID: 1855 Comm: syz-executor.0 Not tainted 6.6.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 RIP: 0010:autofs_fill_super+0x153/0x2c0 fs/autofs/inode.c:322 Code: 40 48 89 df be 02 00 00 00 e8 b9 25 e6 ff 48 c7 43 20 80 61 e4 81 48 c7 83 18 02 00 00 48 60 e4 81 48 89 6c 24 08 41 8b 45 00 <89> 43 04 41 8b 45 04 89 43 08 48 89 df e8 eb f9 e5 ff 48 85 c0 74 RSP: 0018:ffffc90001977de8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff820dbd67 RDI: ffffffff8210e835 RBP: ffff888101e59e00 R08: 0000000000000000 R09: ffffffff824c1760 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888105eb4000 R13: ffff88810aa66c40 R14: 00000000fffffff4 R15: ffff88810a67a900 FS: 00007f82b1bc36c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000004 CR3: 0000000103edf000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: vfs_get_super fs/super.c:1335 [inline] get_tree_nodev+0x52/0x80 fs/super.c:1354 vfs_get_tree+0x20/0xa0 fs/super.c:1750 do_new_mount+0x153/0x390 fs/namespace.c:3335 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount+0x14b/0x1b0 fs/namespace.c:3861 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x42/0x90 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f82b2040ae9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 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 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f82b1bc30c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f82b215ff80 RCX: 00007f82b2040ae9 RDX: 0000000020000040 RSI: 0000000020000380 RDI: 0000000000000000 RBP: 00007f82b1bc3120 R08: 0000000020000400 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 0000000000000006 R14: 00007f82b215ff80 R15: 00007ffd2df4e428 Modules linked in: CR2: 0000000000000004 ---[ end trace 0000000000000000 ]--- RIP: 0010:autofs_fill_super+0x153/0x2c0 fs/autofs/inode.c:322 Code: 40 48 89 df be 02 00 00 00 e8 b9 25 e6 ff 48 c7 43 20 80 61 e4 81 48 c7 83 18 02 00 00 48 60 e4 81 48 89 6c 24 08 41 8b 45 00 <89> 43 04 41 8b 45 04 89 43 08 48 89 df e8 eb f9 e5 ff 48 85 c0 74 RSP: 0018:ffffc90001977de8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff820dbd67 RDI: ffffffff8210e835 RBP: ffff888101e59e00 R08: 0000000000000000 R09: ffffffff824c1760 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888105eb4000 R13: ffff88810aa66c40 R14: 00000000fffffff4 R15: ffff88810a67a900 FS: 00007f82b1bc36c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000004 CR3: 0000000103edf000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 40 rex 1: 48 89 df mov %rbx,%rdi 4: be 02 00 00 00 mov $0x2,%esi 9: e8 b9 25 e6 ff call 0xffe625c7 e: 48 c7 43 20 80 61 e4 movq $0xffffffff81e46180,0x20(%rbx) 15: 81 16: 48 c7 83 18 02 00 00 movq $0xffffffff81e46048,0x218(%rbx) 1d: 48 60 e4 81 21: 48 89 6c 24 08 mov %rbp,0x8(%rsp) 26: 41 8b 45 00 mov 0x0(%r13),%eax * 2a: 89 43 04 mov %eax,0x4(%rbx) <-- trapping instruction 2d: 41 8b 45 04 mov 0x4(%r13),%eax 31: 89 43 08 mov %eax,0x8(%rbx) 34: 48 89 df mov %rbx,%rdi 37: e8 eb f9 e5 ff call 0xffe5fa27 3c: 48 85 c0 test %rax,%rax 3f: 74 .byte 0x74