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: 1 PID: 10466 Comm: syz-executor1 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:locks_remove_flock+0x216/0x350 fs/locks.c:2567 Code: 00 0f 85 3a 01 00 00 48 8b 5b 98 48 85 db 74 3a e8 1f 41 92 ff 48 8d 7b 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 17 01 00 00 48 8b 5b 08 48 85 db 74 0d e8 f2 40 RSP: 0018:ffff880187d5f880 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffc90004571000 RDX: 0000000000000001 RSI: ffffffff81ed5c71 RDI: 0000000000000009 RBP: ffff880187d5fa60 R08: ffff8801c841e0c0 R09: ffffed003b5e5b67 R10: ffffed003b5e5b67 R11: ffff8801daf2db3b R12: ffff8801d20260c0 R13: ffff880187d5f8f8 R14: 1ffff10030fabf13 R15: dffffc0000000000 FS: 00007fa4e3414700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b3322a000 CR3: 00000001d2900000 CR4: 00000000001406e0 Call Trace: kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access 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:00007fa4e3413c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000124 RAX: 0000000000000005 RBX: 0000000000000003 RCX: 0000000000457569 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000003 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa4e34146d4 R13: 00000000004bdb4c R14: 00000000004cc968 R15: 00000000ffffffff Modules linked in: general protection fault: 0000 [#2] PREEMPT SMP KASAN kobject: 'loop4' (0000000047f66fdc): kobject_uevent_env CPU: 0 PID: 10455 Comm: syz-executor5 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:locks_remove_flock+0x216/0x350 fs/locks.c:2567 Code: 00 0f 85 3a 01 00 00 48 8b 5b 98 48 85 db 74 3a e8 1f 41 92 ff 48 8d 7b 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 17 01 00 00 48 8b 5b 08 48 85 db 74 0d e8 f2 40 kobject: 'loop4' (0000000047f66fdc): fill_kobj_path: path = '/devices/virtual/block/loop4' RSP: 0018:ffff880187877880 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000041b58ab3 RCX: ffffffff81ed555d RDX: 000000000836b157 RSI: ffffffff81ed5c71 RDI: 0000000041b58abb RBP: ffff880187877a60 R08: ffff8801ccc14140 R09: ffffed0038771b50 R10: ffffed0038771b50 R11: ffff8801c3b8da83 R12: ffff8801b9193000 kasan: CONFIG_KASAN_INLINE enabled R13: ffff8801878778f8 R14: 1ffff10030f0ef13 R15: dffffc0000000000 FS: 0000000001100940(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1090667db8 CR3: 00000001ba9fc000 CR4: 00000000001406f0 Call Trace: kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access kasan: GPF could be caused by NULL-ptr deref or user memory access 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: 0033:0x411021 Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 19 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007ffdc75f83b0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000411021 RDX: 0000001b31e20000 RSI: 0000000000732000 RDI: 0000000000000003 RBP: 0000000000000000 R08: ffffffff8139bb9a R09: 00000000abbee66b R10: 00007ffdc75f82e0 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000082 R15: 0000000000000005 Modules linked in: general protection fault: 0000 [#3] PREEMPT SMP KASAN CPU: 1 PID: 5700 Comm: udevd 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:locks_remove_flock+0x216/0x350 fs/locks.c:2567 Code: 00 0f 85 3a 01 00 00 48 8b 5b 98 48 85 db 74 3a e8 1f 41 92 ff 48 8d 7b 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 17 01 00 00 48 8b 5b 08 48 85 db 74 0d e8 f2 40 RSP: 0018:ffff8801be207880 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000041b58ab3 RCX: ffffffff81ed555d RDX: 000000000836b157 RSI: ffffffff81ed5c71 RDI: 0000000041b58abb RBP: ffff8801be207a60 R08: ffff8801d87d4500 R09: ffffed0038771b50 R10: ffffed0038771b50 R11: ffff8801c3b8da83 R12: ffff8801cdf48540 R13: ffff8801be2078f8 R14: 1ffff10037c40f13 R15: dffffc0000000000 FS: 00007f412cc137a0(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2fa29000 CR3: 00000001d88e4000 CR4: 00000000001406e0 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: 0033:0x7f412c31b2b0 Code: 40 75 0b 31 c0 48 83 c4 08 e9 0c ff ff ff 48 8d 3d c5 32 08 00 e8 c0 07 02 00 83 3d 45 a3 2b 00 00 75 10 b8 03 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 ce 8a 01 00 48 89 04 24 RSP: 002b:00007ffc3f335ea8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000acb250 RCX: 00007f412c31b2b0 RDX: 00007ffc3f339100 RSI: 0000000000000002 RDI: 0000000000000007 RBP: 0000000000625500 R08: 00007ffc3f3f40b0 R09: 00007ffc3f3f4080 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc3f335f80 R13: 0000000000000001 R14: 00007ffc3f335f14 R15: 0000000000acb250 Modules linked in: general protection fault: 0000 [#4] PREEMPT SMP KASAN CPU: 0 PID: 10461 Comm: syz-executor2 Tainted: G D 4.20.0-rc1-next-20181107+ #107 ---[ end trace 0982f4e3a8d66e34 ]--- Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:locks_remove_flock+0x216/0x350 fs/locks.c:2567 Code: 00 0f 85 3a 01 00 00 48 8b 5b 98 48 85 db 74 3a e8 1f 41 92 ff 48 8d 7b 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 17 01 00 00 48 8b 5b 08 48 85 db 74 0d e8 f2 40 RSP: 0018:ffff880188257880 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000041b58ab3 RCX: ffffffff81ed555d RDX: 000000000836b157 RSI: ffffffff81ed5c71 RDI: 0000000041b58abb RBP: ffff880188257a60 R08: ffff88018b764240 R09: ffffed0038771b50 RIP: 0010:locks_remove_flock+0x216/0x350 fs/locks.c:2567 R10: ffffed0038771b50 R11: ffff8801c3b8da83 R12: ffff8801cf009540 R13: ffff8801882578f8 R14: 1ffff1003104af13 R15: dffffc0000000000 FS: 0000000001e55940(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1090667db8 CR3: 00000001cc331000 CR4: 00000000001406f0 Call Trace: Code: 00 0f 85 3a 01 00 00 48 8b 5b 98 48 85 db 74 3a e8 1f 41 92 ff 48 8d 7b 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 17 01 00 00 48 8b 5b 08 48 85 db 74 0d e8 f2 40 RSP: 0018:ffff880187d5f880 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffc90004571000 locks_remove_file+0x148/0x5c0 fs/locks.c:2607 RDX: 0000000000000001 RSI: ffffffff81ed5c71 RDI: 0000000000000009 RBP: ffff880187d5fa60 R08: ffff8801c841e0c0 R09: ffffed003b5e5b67 __fput+0x2f0/0xa70 fs/file_table.c:271 kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access ____fput+0x15/0x20 fs/file_table.c:312 task_work_run+0x1e8/0x2a0 kernel/task_work.c:113 R10: ffffed003b5e5b67 R11: ffff8801daf2db3b R12: ffff8801d20260c0 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: 0033:0x411021 Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 19 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007fff4a938ff0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000411021 RDX: 0000000000000000 RSI: 0000000000730d08 RDI: 0000000000000004 RBP: 0000000000000000 R08: ffffffff8139bbe3 R09: 00000000abbee66b R10: 00007fff4a938f20 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000077 R15: 0000000000000002 Modules linked in: general protection fault: 0000 [#5] PREEMPT SMP KASAN ---[ end trace 0982f4e3a8d66e35 ]--- CPU: 1 PID: 10473 Comm: syz-executor4 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:locks_remove_flock+0x216/0x350 fs/locks.c:2567 Code: 00 0f 85 3a 01 00 00 48 8b 5b 98 48 85 db 74 3a e8 1f 41 92 ff 48 8d 7b 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 17 01 00 00 48 8b 5b 08 48 85 db 74 0d e8 f2 40 RIP: 0010:locks_remove_flock+0x216/0x350 fs/locks.c:2567 RSP: 0018:ffff88018b977880 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000041b58ab3 RCX: ffffffff81ed555d RDX: 000000000836b157 RSI: ffffffff81ed5c71 RDI: 0000000041b58abb RBP: ffff88018b977a60 R08: ffff880188404080 R09: ffffed0038771b50 R10: ffffed0038771b50 R11: ffff8801c3b8da83 R12: ffff8801d370d840 R13: ffff88018b9778f8 R14: 1ffff1003172ef13 R15: dffffc0000000000 FS: 000000000285d940(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2fa31000 CR3: 00000001c4108000 CR4: 00000000001406e0 Code: 00 0f 85 3a 01 00 00 48 8b 5b 98 48 85 db 74 3a e8 1f 41 92 ff 48 8d 7b 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 17 01 00 00 48 8b 5b 08 48 85 db 74 0d e8 f2 40 Call Trace: RSP: 0018:ffff880187d5f880 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffc90004571000 locks_remove_file+0x148/0x5c0 fs/locks.c:2607 RDX: 0000000000000001 RSI: ffffffff81ed5c71 RDI: 0000000000000009 RBP: ffff880187d5fa60 R08: ffff8801c841e0c0 R09: ffffed003b5e5b67 __fput+0x2f0/0xa70 fs/file_table.c:271 R10: ffffed003b5e5b67 R11: ffff8801daf2db3b R12: ffff8801d20260c0 R13: ffff880187d5f8f8 R14: 1ffff10030fabf13 R15: dffffc0000000000 ____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 FS: 0000000001100940(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 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 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 entry_SYSCALL_64_after_hwframe+0x49/0xbe CR2: 00007fa4e33d1db8 CR3: 00000001ba9fc000 CR4: 00000000001406f0 RIP: 0033:0x411021 Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 19 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007ffd8d0ba8c0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000411021 RDX: 0000000000000000 RSI: ffffffff87cef21d RDI: 0000000000000004