WARNING: CPU: 0 PID: 22354 at fs/attr.c:211 notify_change2+0xae2/0xd90 fs/attr.c:211 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 22354 Comm: syz-executor.1 Not tainted 4.9.181+ #9 ffff8801b21af430 ffffffff81b57e21 0000000000000000 ffffffff82a3a960 00000000ffffffff 0000000000000000 0000000000000009 ffff8801b21af510 ffffffff813fd5da 0000000041b58ab3 ffffffff82e312d2 ffffffff813fd401 Call Trace: [<0000000052597270>] __dump_stack lib/dump_stack.c:15 [inline] [<0000000052597270>] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [<00000000e1e20405>] panic+0x1d9/0x3bd kernel/panic.c:180 [<000000007c2e8bc3>] __warn.cold+0x2f/0x2f kernel/panic.c:546 [<0000000018b98f55>] warn_slowpath_null+0x2d/0x40 kernel/panic.c:589 [<0000000059d445e5>] notify_change2+0xae2/0xd90 fs/attr.c:211 [<00000000728b8b0c>] __remove_privs fs/inode.c:1793 [inline] [<00000000728b8b0c>] file_remove_privs+0x285/0x4b0 fs/inode.c:1815 [<0000000087f18c04>] __generic_file_write_iter+0x157/0x530 mm/filemap.c:3010 [<00000000cb8aaf5f>] blkdev_write_iter fs/block_dev.c:1726 [inline] [<00000000cb8aaf5f>] blkdev_write_iter+0x1bb/0x370 fs/block_dev.c:1706 [<0000000015d9ba97>] vfs_iter_write+0x2e2/0x580 fs/read_write.c:390 [<000000002abb516b>] iter_file_splice_write+0x5a9/0xb10 fs/splice.c:768 [<00000000ba241982>] do_splice_from fs/splice.c:870 [inline] [<00000000ba241982>] direct_splice_actor+0x126/0x1a0 fs/splice.c:1037 [<000000006977ca86>] splice_direct_to_actor+0x2c8/0x820 fs/splice.c:992 [<00000000921da643>] do_splice_direct+0x1a5/0x260 fs/splice.c:1080 [<000000007d40fb57>] do_sendfile+0x503/0xc00 fs/read_write.c:1402 [<000000003e80bb62>] SYSC_sendfile64 fs/read_write.c:1463 [inline] [<000000003e80bb62>] SyS_sendfile64+0x145/0x160 fs/read_write.c:1449 [<0000000048af2f28>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288 [<0000000066ef2e36>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Kernel Offset: disabled Rebooting in 86400 seconds..