syzbot

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WARNING: CPU: 0 PID: 2349 at fs/ext4/inode.c:3264 ext4_invalidatepage+0x109/0x3a0 fs/ext4/inode.c:3264
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 2349 Comm: syz-executor4 Not tainted 4.9.132+ #51
 ffff8801c87f76f0 ffffffff81b371b9 ffffffff82a38c20 00000000ffffffff
 0000000000000000 0000000000000000 0000000000000cc0 ffff8801c87f77b0
 ffffffff813f6be5 0000000041b58ab3 ffffffff82e2996b ffffffff813f6a26
Call Trace:
 [<ffffffff81b371b9>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81b371b9>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff813f6be5>] panic+0x1bf/0x39f kernel/panic.c:179
 [<ffffffff813f6eb4>] __warn.cold.9+0xc1/0x17f kernel/panic.c:542
 [<ffffffff810dbfec>] warn_slowpath_null+0x2c/0x40 kernel/panic.c:585
 [<ffffffff816bffa9>] ext4_invalidatepage+0x109/0x3a0 fs/ext4/inode.c:3264
 [<ffffffff814406f5>] do_invalidatepage mm/truncate.c:99 [inline]
 [<ffffffff814406f5>] truncate_complete_page mm/truncate.c:119 [inline]
 [<ffffffff814406f5>] truncate_inode_page+0x125/0x260 mm/truncate.c:167
 [<ffffffff81440f18>] truncate_inode_pages_range+0x638/0x1060 mm/truncate.c:376
 [<ffffffff81441964>] truncate_inode_pages+0x24/0x30 mm/truncate.c:401
 [<ffffffff816ecd78>] swap_inode_boot_loader fs/ext4/ioctl.c:119 [inline]
 [<ffffffff816ecd78>] ext4_ioctl+0x1be8/0x3620 fs/ext4/ioctl.c:692
 [<ffffffff81546fdc>] vfs_ioctl fs/ioctl.c:43 [inline]
 [<ffffffff81546fdc>] file_ioctl fs/ioctl.c:493 [inline]
 [<ffffffff81546fdc>] do_vfs_ioctl+0x1ac/0x11a0 fs/ioctl.c:677
 [<ffffffff8154805f>] SYSC_ioctl fs/ioctl.c:694 [inline]
 [<ffffffff8154805f>] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:685
 [<ffffffff810056ef>] do_syscall_64+0x19f/0x550 arch/x86/entry/common.c:285
 [<ffffffff82803953>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Kernel Offset: disabled
Rebooting in 86400 seconds..