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: 14652 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:locks_remove_flock+0x216/0x350 fs/locks.c:2567 kobject: 'loop5' (000000002a0dca3a): kobject_uevent_env 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:ffff88018b59f880 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000041b58ab3 RCX: ffffffff81ed555d RDX: 000000000836b157 RSI: ffffffff81ed5c71 RDI: 0000000041b58abb RBP: ffff88018b59fa60 R08: ffff88018b630580 R09: ffffed003b5c5b67 R10: ffffed003b5c5b67 R11: ffff8801dae2db3b R12: ffff8801b8ae9540 R13: ffff88018b59f8f8 R14: 1ffff100316b3f13 R15: dffffc0000000000 FS: 000000000295c940(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004cc998 CR3: 00000001c7393000 CR4: 00000000001406e0 kobject: 'loop5' (000000002a0dca3a): fill_kobj_path: path = '/devices/virtual/block/loop5' Call Trace: kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access kobject: 'loop1' (00000000fbd62615): kobject_uevent_env 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:00007ffed5e40440 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000006 RCX: 0000000000411021 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 0000000000000000 R08: ffffffff813858ef R09: 00000000abbee66b R10: 00007ffed5e40370 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 00000000000000f0 R15: 0000000000000000 Modules linked in: general protection fault: 0000 [#2] PREEMPT SMP KASAN CPU: 0 PID: 14648 Comm: syz-executor3 Tainted: G D 4.20.0-rc1-next-20181107+ #107 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 kasan: CONFIG_KASAN_INLINE enabled RIP: 0010:locks_remove_flock+0x216/0x350 fs/locks.c:2567 kasan: CONFIG_KASAN_INLINE enabled 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:ffff88018321f880 EFLAGS: 00010202 kasan: GPF could be caused by NULL-ptr deref or user memory access RAX: dffffc0000000000 RBX: 0000000041b58ab3 RCX: ffffffff81ed555d RDX: 000000000836b157 RSI: ffffffff81ed5c71 RDI: 0000000041b58abb RBP: ffff88018321fa60 R08: ffff8801cb208440 R09: ffffed0038267b3b R10: ffffed0038267b3b R11: ffff8801c133d9db R12: ffff8801bdce3000 R13: ffff88018321f8f8 R14: 1ffff10030643f13 R15: dffffc0000000000 FS: 0000000002867940(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b31026000 CR3: 00000001bcc10000 CR4: 00000000001406f0 Call Trace: 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:00007ffc66c98540 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000411021 RDX: 0000001b2c920000 RSI: ffffffff87d1d4ba RDI: 0000000000000003 RBP: 0000000000000000 R08: ffffffff816d578c R09: 00000000b6447e4a R10: 00007ffc66c98470 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000122 R15: 0000000000000003 Modules linked in: general protection fault: 0000 [#3] PREEMPT SMP KASAN CPU: 1 PID: 14679 Comm: syz-executor4 Tainted: G D 4.20.0-rc1-next-20181107+ #107 kobject: 'loop5' (000000002a0dca3a): kobject_uevent_env 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:ffff880187377870 EFLAGS: 00010216 RAX: 0000000000040000 RBX: 2038203639206920 RCX: ffffc9000a7b2000 RDX: 00000000000000fd RSI: ffffffff81ed5c9e RDI: ffff8801873778f8 RBP: ffff880187377a60 R08: ffff8801c43b42c0 R09: fffffbfff1322588 R10: fffffbfff1322588 R11: ffffffff89912c43 R12: ffff8801cdb51340 R13: ffff8801873778f8 R14: 1ffff10030e6ef13 R15: dffffc0000000000 FS: 00007f4bc5427700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4bc53e4db8 CR3: 00000001cbc36000 CR4: 00000000001406e0 Call Trace: kobject: 'loop1' (00000000fbd62615): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (000000002a0dca3a): fill_kobj_path: path = '/devices/virtual/block/loop5' locks_remove_file+0x148/0x5c0 fs/locks.c:2607 kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access __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:00007f4bc5426c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000021 RAX: 0000000000000006 RBX: 0000000000000002 RCX: 0000000000457569 RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000005 RBP: 000000000072bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4bc54276d4 R13: 00000000004bdb47 R14: 00000000004cc950 R15: 00000000ffffffff Modules linked in: general protection fault: 0000 [#4] PREEMPT SMP KASAN CPU: 0 PID: 5694 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 ---[ end trace eeb2eb16eddcee39 ]--- 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:ffff8801b6887880 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000041b58ab3 RCX: ffffffff81ed555d RDX: 000000000836b157 RSI: ffffffff81ed5c71 RDI: 0000000041b58abb RBP: ffff8801b6887a60 R08: ffff8801d80b0140 R09: ffffed0038267b3b RIP: 0010:locks_remove_flock+0x216/0x350 fs/locks.c:2567 R10: ffffed0038267b3b R11: ffff8801c133d9db R12: ffff8801bb6d8ac0 R13: ffff8801b68878f8 R14: 1ffff10036d10f13 R15: dffffc0000000000 FS: 00007f6878ee67a0(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b3102f000 CR3: 00000001d8219000 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 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: 0033:0x7f68785ee2b0 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:00007ffd61354898 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000001146250 RCX: 00007f68785ee2b0 RDX: 00007ffd61357af0 RSI: 0000000000000002 RDI: 0000000000000007 RBP: 0000000000625500 R08: 00007ffd613680b0 R09: 00007ffd61368080 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd61354970 R13: 0000000000000001 R14: 00007ffd61354904 R15: 0000000001146250 Modules linked in: general protection fault: 0000 [#5] PREEMPT SMP KASAN kasan: CONFIG_KASAN_INLINE enabled CPU: 1 PID: 14672 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 kasan: GPF could be caused by NULL-ptr deref or user memory access RSP: 0018:ffff88018a0c7880 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000041b58ab3 RCX: ffffffff81ed555d RDX: 000000000836b157 RSI: ffffffff81ed5c71 RDI: 0000000041b58abb RBP: ffff88018a0c7a60 R08: ffff8801d29d6280 R09: 00000000bca5fffb R10: 00000000a8936d98 R11: ffff8801d29d6280 R12: ffff8801cd96a2c0 R13: ffff88018a0c78f8 R14: 1ffff10031418f13 R15: dffffc0000000000 FS: 00000000012f8940(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004cd340 CR3: 00000001cbc36000 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: 0033:0x411021 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:00007ffd403eaa40 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000411021 RDX: 0000000000000000 RSI: 0000000000730458 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00007ffd403ea970 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000103 R15: 0000000000000004 Modules linked in: general protection fault: 0000 [#6] PREEMPT SMP KASAN CPU: 0 PID: 3591 Comm: udevd Tainted: G D 4.20.0-rc1-next-20181107+ #107 RSP: 0018:ffff88018b59f880 EFLAGS: 00010202 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RAX: dffffc0000000000 RBX: 0000000041b58ab3 RCX: ffffffff81ed555d 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:ffff8801c1f17880 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000041b58ab3 RCX: ffffffff81ed555d RDX: 000000000836b157 RSI: ffffffff81ed5c71 RDI: 0000000041b58abb RBP: ffff8801c1f17a60 R08: ffff8801c1f0e640 R09: ffffed0038267b3b RDX: 000000000836b157 RSI: ffffffff81ed5c71 RDI: 0000000041b58abb R10: ffffed0038267b3b R11: ffff8801c133d9db R12: ffff8801bb6d85c0 R13: ffff8801c1f178f8 R14: 1ffff100383e2f13 R15: dffffc0000000000 FS: 00007f6878ee67a0(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 RBP: ffff88018b59fa60 R08: ffff88018b630580 R09: ffffed003b5c5b67 CR2: 00007ffd61357af0 CR3: 00000001c1eba000 CR4: 00000000001406f0 Call Trace: R10: ffffed003b5c5b67 R11: ffff8801dae2db3b R12: ffff8801b8ae9540 R13: ffff88018b59f8f8 R14: 1ffff100316b3f13 R15: dffffc0000000000 locks_remove_file+0x148/0x5c0 fs/locks.c:2607 FS: 000000000295c940(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 __fput+0x2f0/0xa70 fs/file_table.c:271 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 ---[ end trace eeb2eb16eddcee3a ]--- ____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 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 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f68785ee2b0 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:00007ffd61354898 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000001146250 RCX: 00007f68785ee2b0 RDX: 00007ffd61357af0 RSI: 0000000000000002 RDI: 0000000000000007 CR2: 0000001b31035000 CR3: 00000001c7393000 CR4: 00000000001406e0 RBP: 0000000000625500 R08: 00007ffd613680b0 R09: 00007ffd61368080