------------[ cut here ]------------ WARNING: CPU: 0 PID: 4695 at fs/attr.c:211 notify_change2+0xae2/0xd90 fs/attr.c:211 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 4695 Comm: syz-executor.0 Not tainted 4.9.171+ #49 ffff8801c737f430 ffffffff81b4fb61 0000000000000000 ffffffff82a39c20 00000000ffffffff 0000000000000000 0000000000000009 ffff8801c737f510 ffffffff813f96aa 0000000041b58ab3 ffffffff82e2efd2 ffffffff813f94d1 Call Trace: [<000000009c6e7315>] __dump_stack lib/dump_stack.c:15 [inline] [<000000009c6e7315>] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [<0000000084179453>] panic+0x1d9/0x3bd kernel/panic.c:180 [<000000006aca0b74>] __warn.cold+0x2f/0x2f kernel/panic.c:546 [<00000000a39fad6b>] warn_slowpath_null+0x2d/0x40 kernel/panic.c:589 [<00000000ea85e65b>] notify_change2+0xae2/0xd90 fs/attr.c:211 [<00000000a34c6521>] __remove_privs fs/inode.c:1793 [inline] [<00000000a34c6521>] file_remove_privs+0x285/0x4b0 fs/inode.c:1815 [<000000002528aaf2>] __generic_file_write_iter+0x157/0x530 mm/filemap.c:3010 [<0000000043038ad7>] blkdev_write_iter fs/block_dev.c:1726 [inline] [<0000000043038ad7>] blkdev_write_iter+0x1bb/0x370 fs/block_dev.c:1706 [<0000000033fb3ff6>] vfs_iter_write+0x2e2/0x580 fs/read_write.c:390 [<00000000bcbb1ba3>] iter_file_splice_write+0x5a9/0xb10 fs/splice.c:768 [<0000000031e5ef0d>] do_splice_from fs/splice.c:870 [inline] [<0000000031e5ef0d>] direct_splice_actor+0x126/0x1a0 fs/splice.c:1037 [<000000002fd4b034>] splice_direct_to_actor+0x2c8/0x820 fs/splice.c:992 [<00000000a5d0aa55>] do_splice_direct+0x1a5/0x260 fs/splice.c:1080 [<00000000918e986b>] do_sendfile+0x503/0xc00 fs/read_write.c:1401 [<00000000a857091a>] SYSC_sendfile64 fs/read_write.c:1462 [inline] [<00000000a857091a>] SyS_sendfile64+0x145/0x160 fs/read_write.c:1448 [<000000005c8c2699>] do_syscall_64+0x1ad/0x570 arch/x86/entry/common.c:285 [<000000006ffa772e>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Kernel Offset: disabled Rebooting in 86400 seconds..