FAT-fs (loop5): Unrecognized mount option "" or missing value kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 23545 Comm: syz-executor0 Not tainted 4.20.0-rc1-next-20181107+ #107 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__x86_indirect_thunk_rbx+0x10/0x20 arch/x86/lib/retpoline.S:33 Code: 90 0f ae e8 eb f9 48 89 04 24 c3 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 e8 07 00 00 00 f3 90 0f ae e8 eb f9 48 89 1c 24 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 e8 07 00 00 00 f3 RSP: 0018:ffff8801bb63f870 EFLAGS: 00010216 RAX: 0000000000040000 RBX: 2038203639206920 RCX: ffffc900021cb000 RDX: 00000000000001dc RSI: ffffffff81ed5c9e RDI: ffff8801bb63f8f8 RBP: ffff8801bb63fa60 R08: ffff880184d04600 R09: ffffed003b5e5b67 R10: ffffed003b5e5b67 R11: ffff8801daf2db3b R12: ffff880185f33800 R13: ffff8801bb63f8f8 R14: 1ffff100376c7f13 R15: dffffc0000000000 FS: 00007f98d752d700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc516a6418 CR3: 00000001b8ac4000 CR4: 00000000001406f0 DR0: 00000000200001c0 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: locks_remove_file+0x148/0x5c0 fs/locks.c:2607 __fput+0x2f0/0xa70 fs/file_table.c:271 ____fput+0x15/0x20 fs/file_table.c:312 task_work_run+0x1e8/0x2a0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x318/0x380 arch/x86/entry/common.c:166 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457569 Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f98d752cc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000021 RAX: 0000000000000004 RBX: 0000000000000002 RCX: 0000000000457569 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f98d752d6d4 R13: 00000000004bdb47 R14: 00000000004cc950 R15: 00000000ffffffff Modules linked in: kobject: 'loop1' (0000000091fddf8a): kobject_uevent_env kobject: 'loop5' (0000000045a9c2a5): kobject_uevent_env kobject: 'loop1' (0000000091fddf8a): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (0000000045a9c2a5): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000bc6a22a2): kobject_uevent_env kobject: 'loop3' (00000000bc6a22a2): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (00000000e6e2860d): kobject_uevent_env FAT-fs (loop3): bogus number of reserved sectors kobject: 'loop4' (00000000e6e2860d): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop4' (00000000e6e2860d): kobject_uevent_env FAT-fs (loop3): Can't find a valid FAT filesystem kobject: 'loop1' (0000000091fddf8a): kobject_uevent_env kobject: 'loop1' (0000000091fddf8a): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000e6e2860d): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (0000000091fddf8a): kobject_uevent_env kobject: 'loop5' (0000000045a9c2a5): kobject_uevent_env kobject: 'loop5' (0000000045a9c2a5): kobject_uevent_env kobject: 'loop1' (0000000091fddf8a): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (0000000045a9c2a5): fill_kobj_path: path = '/devices/virtual/block/loop5' FAT-fs (loop5): Unrecognized mount option "" or missing value kobject: 'loop5' (0000000045a9c2a5): fill_kobj_path: path = '/devices/virtual/block/loop5' ---[ end trace 36c7e21c654412f9 ]--- FAT-fs (loop1): Unrecognized mount option "utf8=Tyshortname=win95" or missing value RIP: 0010:__x86_indirect_thunk_rbx+0x10/0x20 arch/x86/lib/retpoline.S:33 kobject: 'loop3' (00000000bc6a22a2): kobject_uevent_env kobject: 'loop4' (00000000e6e2860d): kobject_uevent_env kobject: 'loop2' (00000000186ebbd6): kobject_uevent_env kobject: 'loop4' (00000000e6e2860d): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (00000000bc6a22a2): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (0000000045a9c2a5): kobject_uevent_env kobject: 'loop2' (00000000186ebbd6): fill_kobj_path: path = '/devices/virtual/block/loop2' Code: 90 0f ae e8 eb f9 48 89 04 24 c3 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 e8 07 00 00 00 f3 90 0f ae e8 eb f9 48 89 1c 24 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 e8 07 00 00 00 f3 kobject: 'loop1' (0000000091fddf8a): kobject_uevent_env kobject: 'loop5' (0000000045a9c2a5): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000bc6a22a2): kobject_uevent_env kobject: 'loop3' (00000000bc6a22a2): kobject_uevent_env RSP: 0018:ffff8801bb63f870 EFLAGS: 00010216 kobject: 'loop3' (00000000bc6a22a2): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (00000000e6e2860d): kobject_uevent_env kobject: 'loop1' (0000000091fddf8a): fill_kobj_path: path = '/devices/virtual/block/loop1' RAX: 0000000000040000 RBX: 2038203639206920 RCX: ffffc900021cb000 kobject: 'loop3' (00000000bc6a22a2): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (00000000e6e2860d): kobject_uevent_env kobject: 'loop4' (00000000e6e2860d): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop4' (00000000e6e2860d): fill_kobj_path: path = '/devices/virtual/block/loop4' RDX: 00000000000001dc RSI: ffffffff81ed5c9e RDI: ffff8801bb63f8f8 kobject: 'loop5' (0000000045a9c2a5): kobject_uevent_env kasan: CONFIG_KASAN_INLINE enabled kobject: 'loop1' (0000000091fddf8a): kobject_uevent_env kasan: GPF could be caused by NULL-ptr deref or user memory access kobject: 'loop1' (0000000091fddf8a): fill_kobj_path: path = '/devices/virtual/block/loop1' RBP: ffff8801bb63fa60 R08: ffff880184d04600 R09: ffffed003b5e5b67 kobject: 'loop5' (0000000045a9c2a5): fill_kobj_path: path = '/devices/virtual/block/loop5' general protection fault: 0000 [#2] PREEMPT SMP KASAN kobject: 'loop2' (00000000186ebbd6): kobject_uevent_env CPU: 0 PID: 23570 Comm: syz-executor0 Tainted: G D 4.20.0-rc1-next-20181107+ #107 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__x86_indirect_thunk_rbx+0x10/0x20 arch/x86/lib/retpoline.S:33 Code: 90 0f ae e8 eb f9 48 89 04 24 c3 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 e8 07 00 00 00 f3 90 0f ae e8 eb f9 48 89 1c 24 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 e8 07 00 00 00 f3 kobject: 'loop2' (00000000186ebbd6): fill_kobj_path: path = '/devices/virtual/block/loop2' RSP: 0018:ffff8801c16b7870 EFLAGS: 00010212 RAX: 0000000000040000 RBX: 2038203639206920 RCX: ffffc90009b2e000 RDX: 00000000000000f2 RSI: ffffffff81ed5c9e RDI: ffff8801c16b78f8 RBP: ffff8801c16b7a60 R08: ffff8801be7d00c0 R09: 00000000bca5fffb R10: 00000000a8936d98 R11: ffff8801be7d00c0 R12: ffff8801c1ffc0c0 R13: ffff8801c16b78f8 R14: 1ffff100382d6f13 R15: dffffc0000000000 kobject: 'loop1' (0000000091fddf8a): kobject_uevent_env FS: 00007f98d74eb700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b31921000 CR3: 00000001b8ac4000 CR4: 00000000001406f0 DR0: 00000000200001c0 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 kobject: 'loop1' (0000000091fddf8a): fill_kobj_path: path = '/devices/virtual/block/loop1' Call Trace: kobject: 'loop5' (0000000045a9c2a5): kobject_uevent_env kobject: 'loop5' (0000000045a9c2a5): fill_kobj_path: path = '/devices/virtual/block/loop5' locks_remove_file+0x148/0x5c0 fs/locks.c:2607 kobject: 'loop4' (00000000e6e2860d): kobject_uevent_env kobject: 'loop4' (00000000e6e2860d): fill_kobj_path: path = '/devices/virtual/block/loop4' __fput+0x2f0/0xa70 fs/file_table.c:271 kobject: 'loop3' (00000000bc6a22a2): kobject_uevent_env kobject: 'loop3' (00000000bc6a22a2): fill_kobj_path: path = '/devices/virtual/block/loop3' ____fput+0x15/0x20 fs/file_table.c:312 kobject: 'loop1' (0000000091fddf8a): kobject_uevent_env task_work_run+0x1e8/0x2a0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x318/0x380 arch/x86/entry/common.c:166 kobject: 'loop1' (0000000091fddf8a): fill_kobj_path: path = '/devices/virtual/block/loop1' prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457569 Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f98d74eac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000021 RAX: 0000000000000005 RBX: 0000000000000002 RCX: 0000000000457569 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000003 RBP: 000000000072c040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f98d74eb6d4 R13: 00000000004bdb47 R14: 00000000004cc950 R15: 00000000ffffffff Modules linked in: kobject: 'loop5' (0000000045a9c2a5): kobject_uevent_env kobject: 'loop5' (0000000045a9c2a5): fill_kobj_path: path = '/devices/virtual/block/loop5' ---[ end trace 36c7e21c654412fa ]--- RIP: 0010:__x86_indirect_thunk_rbx+0x10/0x20 arch/x86/lib/retpoline.S:33 Code: 90 0f ae e8 eb f9 48 89 04 24 c3 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 e8 07 00 00 00 f3 90 0f ae e8 eb f9 48 89 1c 24 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 e8 07 00 00 00 f3 RSP: 0018:ffff8801bb63f870 EFLAGS: 00010216 RAX: 0000000000040000 RBX: 2038203639206920 RCX: ffffc900021cb000 FAT-fs (loop1): Unrecognized mount option "utf8=Tyshortname=win95" or missing value RDX: 00000000000001dc RSI: ffffffff81ed5c9e RDI: ffff8801bb63f8f8 RBP: ffff8801bb63fa60 R08: ffff880184d04600 R09: ffffed003b5e5b67 R10: ffffed003b5e5b67 R11: ffff8801daf2db3b R12: ffff880185f33800 R13: ffff8801bb63f8f8 R14: 1ffff100376c7f13 R15: dffffc0000000000 R10: ffffed003b5e5b67 R11: ffff8801daf2db3b R12: ffff880185f33800 kobject: 'loop4' (00000000e6e2860d): kobject_uevent_env FS: 00007f98d74eb700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 kobject: 'loop4' (00000000e6e2860d): fill_kobj_path: path = '/devices/virtual/block/loop4' CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 FAT-fs (loop5): bogus number of reserved sectors FAT-fs (loop5): Can't find a valid FAT filesystem kobject: 'loop2' (00000000186ebbd6): kobject_uevent_env R13: ffff8801bb63f8f8 R14: 1ffff100376c7f13 R15: dffffc0000000000 kobject: 'loop2' (00000000186ebbd6): fill_kobj_path: path = '/devices/virtual/block/loop2' FS: 00007f98d752d700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CR2: 00007f98d74c9db8 CR3: 00000001b8ac4000 CR4: 00000000001406f0 kobject: 'loop3' (00000000bc6a22a2): kobject_uevent_env DR0: 00000000200001c0 DR1: 0000000000000000 DR2: 0000000000000000 kobject: 'loop3' (00000000bc6a22a2): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (00000000e6e2860d): kobject_uevent_env kobject: 'loop5' (0000000045a9c2a5): kobject_uevent_env kobject: 'loop4' (00000000e6e2860d): kobject_uevent_env kobject: 'loop3' (00000000bc6a22a2): kobject_uevent_env kobject: 'loop4' (00000000e6e2860d): fill_kobj_path: path = '/devices/virtual/block/loop4' CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 kobject: 'loop1' (0000000091fddf8a): kobject_uevent_env kobject: 'loop5' (0000000045a9c2a5): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000bc6a22a2): fill_kobj_path: path = '/devices/virtual/block/loop3' DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 kobject: 'loop4' (00000000e6e2860d): fill_kobj_path: path = '/devices/virtual/block/loop4' CR2: 00000000007266ac CR3: 00000001b8ac4000 CR4: 00000000001406f0 kobject: 'loop5' (0000000045a9c2a5): kobject_uevent_env kobject: 'loop4' (00000000e6e2860d): kobject_uevent_env kobject: 'loop3' (00000000bc6a22a2): kobject_uevent_env kobject: 'loop1' (0000000091fddf8a): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (0000000045a9c2a5): fill_kobj_path: path = '/devices/virtual/block/loop5' FAT-fs (loop3): bogus number of reserved sectors kobject: 'loop3' (00000000bc6a22a2): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (00000000e6e2860d): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (00000000186ebbd6): kobject_uevent_env