netlink: 284 bytes leftover after parsing attributes in process `syz-executor.0'. 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 netlink: 284 bytes leftover after parsing attributes in process `syz-executor.4'. Modules linked in: CPU: 0 PID: 4837 Comm: syz-executor.5 Not tainted 4.14.225-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8880b425a680 task.stack: ffff88805aa80000 RIP: 0010:kobject_uevent_env+0xb2/0xf40 lib/kobject_uevent.c:355 RSP: 0018:ffff88805aa87bf0 EFLAGS: 00010206 RAX: 0000000000000018 RBX: 0000000000000002 RCX: 1ffff1101684b5f0 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000000000c0 RBP: ffff888096b9e6d0 R08: ffffffff8b9c3a50 R09: 0000000000000003 R10: 0000000000000000 R11: ffff8880b425a680 R12: 00000000000000a0 R13: dffffc0000000000 R14: ffff888096b9e5c8 R15: 00000000000000a0 FS: 000000000174b400(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000970004 CR3: 0000000052e8a000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: loop_clr_fd+0x59f/0xc20 drivers/block/loop.c:1069 __lo_release drivers/block/loop.c:1660 [inline] lo_release+0xff/0x190 drivers/block/loop.c:1678 __blkdev_put+0x5aa/0x800 fs/block_dev.c:1803 raw_release+0x122/0x160 drivers/char/raw.c:113 __fput+0x25f/0x7a0 fs/file_table.c:210 task_work_run+0x11f/0x190 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x41927b RSP: 002b:00007ffcdd6c5850 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 000000000041927b RDX: 00000000005715f8 RSI: 0000000000000080 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000570128 R10: 00007ffcdd6c5940 R11: 0000000000000293 R12: 000000000009d3d7 R13: 00000000000003e8 R14: 000000000056bf60 R15: 000000000009d3cb Code: 03 42 80 3c 28 00 0f 85 e4 0b 00 00 4d 8b 64 24 18 4d 85 e4 0f 84 01 0c 00 00 e8 ca f8 59 fa 49 8d 7c 24 20 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 0f 85 db 0b 00 00 49 8b 6c 24 20 48 85 ed 74 b0 RIP: kobject_uevent_env+0xb2/0xf40 lib/kobject_uevent.c:355 RSP: ffff88805aa87bf0 ---[ end trace c5f6629580d540a4 ]---