EXT4-fs error (device loop0): ext4_ext_remove_space:2842: inode #16: comm syz-executor.0: path[1].p_hdr == NULL EXT4-fs (loop0): Remounting filesystem re[ 86.967968][ T4925] EXT4-fs (loop0): Remounting filesystem read-only BUG: unable to handle page fault for address: 00000000ffffffff #PF: supervisor instruction fetch in kernel mode #PF: error_code(0x0010) - not-present page PGD 17a547067 P4D 17a547067 PUD 0 Thread overran stack, or stack corrupted Oops: 0010 [#1] PREEMPT SMP CPU: 0 PID: 4925 Comm: syz-executor.0 Not tainted 6.1.100-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:0xffffffff Code: Unable to access opcode bytes at 0xffffffd5. RSP: 0018:ffffc90001c076d8 EFLAGS: 00010002 RAX: 0000000000000000 RBX: 81f42ad0ffffffff RCX: 0000000000000000 RDX: 00000000000003fd RSI: 0000000000000005 RDI: ffffffff865462a0 RBP: 0000000000000000 R08: ffffffff811a4534 R09: 0000000000000000 R10: 0000000000000000 R11: 2073662d34545845 R12: ffffffff865462a0 R13: 0000000000000000 R14: 862fc9f8ffffffff R15: 0000000000000010 FS: 00007f3f3c25e6c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000ffffffff CR3: 000000017a7bf000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: Modules linked in: CR2: 00000000ffffffff ---[ end trace 0000000000000000 ]--- RIP: 0010:0xffffffff Code: Unable to access opcode bytes at 0xffffffd5. RSP: 0018:ffffc90001c076d8 EFLAGS: 00010002 RAX: 0000000000000000 RBX: 81f42ad0ffffffff RCX: 0000000000000000 RDX: 00000000000003fd RSI: 0000000000000005 RDI: ffffffff865462a0 RBP: 0000000000000000 R08: ffffffff811a4534 R09: 0000000000000000 R10: 0000000000000000 R11: 2073662d34545845 R12: ffffffff865462a0 R13: 0000000000000000 R14: 862fc9f8ffffffff R15: 0000000000000010 FS: 00007f3f3c25e6c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000ffffffff CR3: 000000017a7bf000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400