kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN Modules linked in: print_req_error: I/O error, dev loop1, sector 0 CPU: 0 PID: 30484 Comm: udevd Not tainted 4.14.169-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff888040a7e200 task.stack: ffff88820ed28000 RIP: 0010:do_last fs/namei.c:3269 [inline] RIP: 0010:path_openat+0x20b/0x3db0 fs/namei.c:3569 RSP: 0018:ffff88820ed2f868 EFLAGS: 00010247 SQUASHFS error: squashfs_read_data failed to read block 0x0 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0001020304050608 RDX: 0000000000000000 RSI: 1ffff11041da5efe RDI: 0000000000000004 RBP: ffff88820ed2f9c0 R08: ffff888040a7e200 R09: 0000000000000002 R10: 0000000000000000 R11: 0000000000000003 R12: ffff88820ed2fa00 R13: ffff88820ed2fa00 R14: ffff8880a6f6a460 R15: 0000000000000000 FS: 00007fb269a827a0(0000) GS:ffff8880aec00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000071d1b4 CR3: 0000000080aa5000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: squashfs: SQUASHFS error: unable to read squashfs_super_block do_filp_open+0x18e/0x250 fs/namei.c:3603 do_open_execat+0xe7/0x4a0 fs/exec.c:849 open_exec+0x37/0x70 fs/exec.c:881 load_elf_binary+0x77c/0x4d60 fs/binfmt_elf.c:767 search_binary_handler fs/exec.c:1638 [inline] search_binary_handler+0x149/0x6f0 fs/exec.c:1616 exec_binprm fs/exec.c:1680 [inline] do_execveat_common.isra.0+0x1000/0x1dd0 fs/exec.c:1802 do_execve fs/exec.c:1847 [inline] SYSC_execve fs/exec.c:1928 [inline] SyS_execve+0x39/0x50 fs/exec.c:1923 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x7fb269166207 RSP: 002b:00007fff80d6b458 EFLAGS: 00000202 ORIG_RAX: 000000000000003b RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 00007fb269166207 RDX: 0000000000899d40 RSI: 00007fff80d6b550 RDI: 00007fff80d6c560 RBP: 0000000000625500 R08: 00000000000028aa R09: 00000000000028aa R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000899d40 R13: 0000000000000007 R14: 0000000000846030 R15: 0000000000000005 Code: 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 03 30 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5e 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 RIP: do_last fs/namei.c:3269 [inline] RSP: ffff88820ed2f868 RIP: path_openat+0x20b/0x3db0 fs/namei.c:3569 RSP: ffff88820ed2f868 ---[ end trace ca1b365bacc2bf7b ]---