WARNING: can't dereference registers at 1ffff11017480f90 for ip apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793 IPVS: ftp: loaded support on port[0] = 21 audit: type=1804 audit(1617178219.380:13): pid=10953 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.5" name="/root/syzkaller-testdir065824239/syzkaller.cgPFsu/29/bus" dev="sda1" ino=14053 res=1 print_req_error: I/O error, dev loop0, sector 0 audit: type=1804 audit(1617178220.080:14): pid=10990 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.5" name="/root/syzkaller-testdir065824239/syzkaller.cgPFsu/29/bus" dev="sda1" ino=14053 res=1 IPVS: ftp: loaded support on port[0] = 21 audit: type=1804 audit(1617178220.370:15): pid=11014 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.1" name="/root/syzkaller-testdir272790938/syzkaller.MTaeCn/31/bus" dev="sda1" ino=14077 res=1 audit: type=1804 audit(1617178220.400:16): pid=11014 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.1" name="/root/syzkaller-testdir272790938/syzkaller.MTaeCn/31/bus" dev="sda1" ino=14077 res=1 dlm: non-version read from control device 4096 print_req_error: I/O error, dev loop0, sector 0 syz-executor.5 uses old SIOCAX25GETINFO EXT4-fs (loop5): Unrecognized mount option "¼6Ü" or missing value EXT4-fs (loop5): failed to parse options in superblock: ¼6Ü EXT4-fs (loop5): mounting ext2 file system using the ext4 subsystem EXT4-fs (loop5): bad geometry: block count 128 exceeds size of device (2 blocks) isofs_fill_super: root inode is not a directory. Corrupted media? IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 isofs_fill_super: root inode is not a directory. Corrupted media? isofs_fill_super: root inode is not a directory. Corrupted media? print_req_error: I/O error, dev loop0, sector 0 isofs_fill_super: root inode is not a directory. Corrupted media? FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 1 print_req_error: I/O error, dev loop0, sector 0 print_req_error: I/O error, dev loop0, sector 0 CPU: 1 PID: 11291 Comm: syz-executor.2 Not tainted 4.14.228-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: print_req_error: I/O error, dev loop0, sector 0 __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x149 lib/fault-inject.c:149 Buffer I/O error on dev loop0, logical block 0, async page read should_fail_alloc_page mm/page_alloc.c:2898 [inline] prepare_alloc_pages mm/page_alloc.c:4131 [inline] __alloc_pages_nodemask+0x22c/0x2720 mm/page_alloc.c:4179 print_req_error: I/O error, dev loop0, sector 0 Buffer I/O error on dev loop0, logical block 0, async page read alloc_pages_current+0x155/0x260 mm/mempolicy.c:2113 alloc_pages include/linux/gfp.h:520 [inline] pte_alloc_one+0x15/0x100 arch/x86/mm/pgtable.c:30 do_fault_around+0x3f1/0x620 mm/memory.c:3680 print_req_error: I/O error, dev loop0, sector 0 do_read_fault mm/memory.c:3721 [inline] do_fault mm/memory.c:3852 [inline] handle_pte_fault mm/memory.c:4082 [inline] __handle_mm_fault+0x2b1f/0x4620 mm/memory.c:4206 handle_mm_fault+0x391/0x860 mm/memory.c:4243 Buffer I/O error on dev loop0, logical block 0, async page read __do_page_fault+0x549/0xad0 arch/x86/mm/fault.c:1442 print_req_error: I/O error, dev loop0, sector 0 page_fault+0x25/0x50 arch/x86/entry/entry_64.S:1123 RIP: 0010:__get_user_4+0x21/0x30 arch/x86/lib/getuser.S:78 Buffer I/O error on dev loop0, logical block 0, async page read RSP: 0018:ffff88804ec97bc8 EFLAGS: 00010202 RAX: 0000000020000183 RBX: 1ffff11009d92fcd RCX: ffffc90008520000 RDX: ffffffffffffffff RSI: ffffffff86941680 RDI: 0000000000000286 RBP: ffff88809e787000 R08: ffffffff8b9b7828 R09: 0000000000000000 R10: 0000000000000000 R11: ffff888093fe4580 R12: 0000000000000084 R13: 000000000000001d R14: 1ffff11009d92f85 R15: ffffffff8869ca80 print_req_error: I/O error, dev loop0, sector 0 sctp_getsockopt+0x1f9/0x4c70 net/sctp/socket.c:6882 Buffer I/O error on dev loop0, logical block 0, async page read print_req_error: I/O error, dev loop0, sector 0 Buffer I/O error on dev loop0, logical block 0, async page read SYSC_getsockopt net/socket.c:1896 [inline] SyS_getsockopt+0x102/0x1c0 net/socket.c:1878 print_req_error: I/O error, dev loop0, sector 24 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb Buffer I/O error on dev loop0, logical block 3, async page read RIP: 0033:0x466459 Buffer I/O error on dev loop0, logical block 0, async page read RSP: 002b:00007ffb66d07188 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459 RDX: 000000000000001d RSI: 0000000000000084 RDI: 0000000000000004 RBP: 00007ffb66d071d0 R08: 0000000020000180 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffe66d2151f R14: 00007ffb66d07300 R15: 0000000000022000 isofs_fill_super: root inode is not a directory. Corrupted media? FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 1 isofs_fill_super: root inode is not a directory. Corrupted media? CPU: 1 PID: 11363 Comm: syz-executor.2 Not tainted 4.14.228-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x149 lib/fault-inject.c:149 should_failslab+0xd6/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc+0x28e/0x3c0 mm/slab.c:3550 ptlock_alloc+0x1d/0x70 mm/memory.c:4836 ptlock_init include/linux/mm.h:1764 [inline] pgtable_page_ctor include/linux/mm.h:1798 [inline] pte_alloc_one+0x57/0x100 arch/x86/mm/pgtable.c:33 do_fault_around+0x3f1/0x620 mm/memory.c:3680 do_read_fault mm/memory.c:3721 [inline] do_fault mm/memory.c:3852 [inline] handle_pte_fault mm/memory.c:4082 [inline] __handle_mm_fault+0x2b1f/0x4620 mm/memory.c:4206 handle_mm_fault+0x391/0x860 mm/memory.c:4243 __do_page_fault+0x549/0xad0 arch/x86/mm/fault.c:1442 page_fault+0x25/0x50 arch/x86/entry/entry_64.S:1123 RIP: 0010:__get_user_4+0x21/0x30 arch/x86/lib/getuser.S:78 RSP: 0018:ffff888049647bc8 EFLAGS: 00010202 RAX: 0000000020000183 RBX: 1ffff110092c8fcd RCX: ffffc90008520000 RDX: ffffffffffffffff RSI: ffffffff86941680 RDI: 0000000000000286 RBP: ffff88809e61b800 R08: ffffffff8b9b7828 R09: 0000000000000000 R10: 0000000000000000 R11: ffff888093a3a480 R12: 0000000000000084 R13: 000000000000001d R14: 1ffff110092c8f85 R15: ffffffff8869ca80 sctp_getsockopt+0x1f9/0x4c70 net/sctp/socket.c:6882 SYSC_getsockopt net/socket.c:1896 [inline] SyS_getsockopt+0x102/0x1c0 net/socket.c:1878 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x466459 RSP: 002b:00007ffb66d07188 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459 RDX: 000000000000001d RSI: 0000000000000084 RDI: 0000000000000004 RBP: 00007ffb66d071d0 R08: 0000000020000180 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffe66d2151f R14: 00007ffb66d07300 R15: 0000000000022000 isofs_fill_super: root inode is not a directory. Corrupted media? UBIFS error (pid: 11376): cannot open "/dev/loop5", error -22 isofs_fill_super: root inode is not a directory. Corrupted media? IPVS: ftp: loaded support on port[0] = 21 isofs_fill_super: root inode is not a directory. Corrupted media? vxfs: unable to read disk superblock at 1 vxfs: unable to read disk superblock at 8 vxfs: can't find superblock.