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kernel BUG at fs/buffer.c:605!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 5827 Comm: syz-executor.0 Not tainted 4.14.178-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8882046a24c0 task.stack: ffff88820d990000
RIP: 0010:mark_buffer_dirty_inode fs/buffer.c:605 [inline]
RIP: 0010:mark_buffer_dirty_inode+0x2d8/0x3a0 fs/buffer.c:596
RSP: 0018:ffff88820d9970d0 EFLAGS: 00010212
RAX: 0000000000040000 RBX: ffff88804d395b28 RCX: ffffc90005e62000
RDX: 0000000000036798 RSI: ffffffff8196cc18 RDI: ffff88805c348f10
RBP: ffff88805c348db0 R08: 0000000000000001 R09: 0000000000000003
R10: ffff8882046a2dc0 R11: ffff8882046a24c0 R12: ffff8880a6f89b68
R13: 0000000000000000 R14: ffff8880a8881e40 R15: ffff88820d9971a0
FS:  00007ffb7fa61700(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002951cbb6 CR3: 000000002e05d000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 fat_free_clusters+0x2fc/0x750 fs/fat/fatent.c:596
 fat_add_cluster+0xb5/0xc0 fs/fat/inode.c:107
 __fat_get_block fs/fat/inode.c:147 [inline]
 fat_get_block+0x28f/0x750 fs/fat/inode.c:176
 __block_write_begin_int+0x337/0x1030 fs/buffer.c:2038
 __block_write_begin fs/buffer.c:2088 [inline]
 block_write_begin+0x58/0x260 fs/buffer.c:2147
 cont_write_begin+0x3f0/0x710 fs/buffer.c:2497
 fat_write_begin+0x89/0x110 fs/fat/inode.c:222
 generic_perform_write+0x1c9/0x420 mm/filemap.c:3047
 __generic_file_write_iter+0x429/0x590 mm/filemap.c:3140
 generic_file_write_iter+0x2fa/0x650 mm/filemap.c:3200
 call_write_iter include/linux/fs.h:1778 [inline]
 new_sync_write fs/read_write.c:469 [inline]
 __vfs_write+0x44e/0x630 fs/read_write.c:482
 __kernel_write+0xf5/0x330 fs/read_write.c:501
 write_pipe_buf+0x143/0x1b0 fs/splice.c:797
 splice_from_pipe_feed fs/splice.c:502 [inline]
 __splice_from_pipe+0x332/0x740 fs/splice.c:626
 splice_from_pipe+0xc6/0x120 fs/splice.c:661
 default_file_splice_write+0x37/0x80 fs/splice.c:809
 do_splice_from fs/splice.c:851 [inline]
 direct_splice_actor+0x115/0x160 fs/splice.c:1018
 splice_direct_to_actor+0x27e/0x730 fs/splice.c:973
binder: 5843:5851 ioctl c0306201 20000540 returned -14
 do_splice_direct+0x164/0x210 fs/splice.c:1061
binder: BINDER_SET_CONTEXT_MGR already set
 do_sendfile+0x469/0xaf0 fs/read_write.c:1441
 SYSC_sendfile64 fs/read_write.c:1502 [inline]
 SyS_sendfile64+0xff/0x110 fs/read_write.c:1488
binder: 5843:5851 ioctl 40046207 0 returned -16
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45c829
RSP: 002b:00007ffb7fa60c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00000000004fc2e0 RCX: 000000000045c829
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000001c500 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000008dc R14: 00000000004cb816 R15: 00007ffb7fa616d4
Code: fa 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 75 4d 48 89 6b 58 4c 89 ef e8 82 05 aa 04 e9 20 fe ff ff e8 88 79 c3 ff <0f> 0b 4c 89 ff e8 3e ce ec ff e9 05 fe ff ff e8 34 ce ec ff e9 
RIP: mark_buffer_dirty_inode fs/buffer.c:605 [inline] RSP: ffff88820d9970d0
RIP: mark_buffer_dirty_inode+0x2d8/0x3a0 fs/buffer.c:596 RSP: ffff88820d9970d0
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
binder: 5871:5877 ioctl c0306201 20000540 returned -14
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
---[ end trace 8043caef89b72b14 ]---