------------[ cut here ]------------ kernel BUG at fs/fat/inode.c:161! invalid opcode: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 0 PID: 10280 Comm: syz-executor.3 Not tainted 4.14.302-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 task: ffff8880512565c0 task.stack: ffff888052620000 RIP: 0010:__fat_get_block fs/fat/inode.c:161 [inline] RIP: 0010:fat_get_block+0x647/0x750 fs/fat/inode.c:176 RSP: 0018:ffff8880526277c0 EFLAGS: 00010216 RAX: 0000000000040000 RBX: ffff88804b9595e8 RCX: ffffc90009aff000 RDX: 00000000000003bc RSI: ffffffff81d001f7 RDI: ffff8880520395a0 RBP: ffff888052039658 R08: ffff888052627858 R09: 0000000000000000 R10: 0000000000000000 R11: ffff8880512565c0 R12: ffff8880508b43c0 R13: 0000000000000000 R14: 000000000000000b R15: 0000000000000001 FS: 00007fc48cd64700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002000e000 CR3: 00000000b4f3f000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __block_write_begin_int+0x35c/0x11d0 fs/buffer.c:2038 __block_write_begin fs/buffer.c:2088 [inline] block_write_begin+0x58/0x270 fs/buffer.c:2147 cont_write_begin+0x4a3/0x740 fs/buffer.c:2497 fat_write_begin+0x89/0x170 fs/fat/inode.c:222 generic_perform_write+0x1d5/0x430 mm/filemap.c:3055 __generic_file_write_iter+0x227/0x590 mm/filemap.c:3180 generic_file_write_iter+0x36f/0x650 mm/filemap.c:3208 call_write_iter include/linux/fs.h:1780 [inline] new_sync_write fs/read_write.c:469 [inline] __vfs_write+0x44c/0x630 fs/read_write.c:482 vfs_write+0x17f/0x4d0 fs/read_write.c:544 SYSC_write fs/read_write.c:590 [inline] SyS_write+0xf2/0x210 fs/read_write.c:582 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7fc48e7f20d9 RSP: 002b:00007fc48cd64168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fc48e911f80 RCX: 00007fc48e7f20d9 RDX: 0000000000000008 RSI: 0000000020000180 RDI: 0000000000000004 RBP: 00007fc48e84dae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc6be2dabf R14: 00007fc48cd64300 R15: 0000000000022000 Code: 19 af ff e9 bd fa ff ff 48 8b 7c 24 20 e8 82 18 af ff e9 f4 fb ff ff 48 8b 7c 24 38 e8 83 17 af ff e9 52 fe ff ff e8 49 58 85 ff <0f> 0b e8 42 58 85 ff 0f 0b e8 3b 19 af ff e9 b1 fa ff ff 48 8b RIP: __fat_get_block fs/fat/inode.c:161 [inline] RSP: ffff8880526277c0 RIP: fat_get_block+0x647/0x750 fs/fat/inode.c:176 RSP: ffff8880526277c0 ---[ end trace ecc5a8f140f3768f ]---