syzbot

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WARNING: CPU: 0 PID: 13416 at fs/ext4/inode.c:3373 ext4_invalidatepage+0xf5/0x380 fs/ext4/inode.c:3373
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 13416 Comm: syz-executor0 Not tainted 4.14.75+ #18
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0xb9/0x11b lib/dump_stack.c:53
 panic+0x1bf/0x3a4 kernel/panic.c:181
 __warn.cold.7+0x148/0x185 kernel/panic.c:542
 report_bug+0x1f7/0x26c lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 do_error_trap+0x1ba/0x2c0 arch/x86/kernel/traps.c:295
 invalid_op+0x18/0x40 arch/x86/entry/entry_64.S:944
RIP: 0010:ext4_invalidatepage+0xf5/0x380 fs/ext4/inode.c:3373
RSP: 0018:ffff8801d03d7680 EFLAGS: 00010212
RAX: 0000000000040000 RBX: ffffea0005ed8a40 RCX: 0000000000034005
RDX: ffffffff81739785 RSI: ffffc90002539000 RDI: ffffea0005ed8a70
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000001000
R13: ffff880178691150 R14: ffff8801983cbc90 R15: ffffea0005ed8a40
 do_invalidatepage mm/truncate.c:124 [inline]
 truncate_complete_page mm/truncate.c:144 [inline]
 truncate_inode_page+0x11e/0x260 mm/truncate.c:192
 truncate_inode_pages_range+0x2aa/0x10e0 mm/truncate.c:316
 truncate_inode_pages mm/truncate.c:429 [inline]
 truncate_pagecache+0x62/0x80 mm/truncate.c:757
 ext4_setattr+0x1545/0x2280 fs/ext4/inode.c:5521
 notify_change2+0xad7/0xdd0 fs/attr.c:315
 do_truncate2+0x10f/0x1c0 fs/open.c:63
 handle_truncate fs/namei.c:2998 [inline]
 do_last fs/namei.c:3417 [inline]
 path_openat+0xaea/0x23a0 fs/namei.c:3550
 do_filp_open+0x197/0x270 fs/namei.c:3584
 do_sys_open+0x2ef/0x580 fs/open.c:1071
 do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x457579
RSP: 002b:00007fba3a256c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 0000000000457579
RDX: 0000000000000000 RSI: 0000000040000100 RDI: 00000000200001c0
RBP: 000000000072bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fba3a2576d4
R13: 00000000004bdb43 R14: 00000000004cc688 R15: 00000000ffffffff
Kernel Offset: 0x27000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
Rebooting in 86400 seconds..