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kernel BUG at fs/fat/inode.c:161!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 10679 Comm: syz-executor.5 Not tainted 4.14.302-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
task: ffff888047838080 task.stack: ffff888047060000
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:ffff8880470676d8 EFLAGS: 00010216
RAX: 0000000000040000 RBX: ffff88804f193888 RCX: ffffc90005dd1000
RDX: 0000000000000807 RSI: ffffffff81d001f7 RDI: ffff888045194ae8
RBP: ffff888045194ba0 R08: ffff888047067770 R09: 0000000000000000
R10: 0000000000000000 R11: ffff888047838080 R12: ffff888047f263c0
R13: 0000000000000000 R14: 0000000000000009 R15: 0000000000000001
FS:  00007fc5c546f700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd89961d18 CR3: 00000000a7ba9000 CR4: 00000000003406e0
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
 cont_expand_zero fs/buffer.c:2457 [inline]
 cont_write_begin+0x54b/0x740 fs/buffer.c:2487
 fat_write_begin+0x89/0x170 fs/fat/inode.c:222
 generic_cont_expand_simple+0xe1/0x130 fs/buffer.c:2388
 fat_cont_expand+0x71/0x280 fs/fat/file.c:198
 fat_setattr+0x8b8/0xbe0 fs/fat/file.c:477
 notify_change+0x56b/0xd10 fs/attr.c:315
 do_truncate+0xff/0x1a0 fs/open.c:63
 vfs_truncate+0x456/0x680 fs/open.c:120
 do_sys_truncate.part.0+0xdc/0xf0 fs/open.c:143
 do_sys_truncate fs/open.c:137 [inline]
 SYSC_truncate fs/open.c:155 [inline]
 SyS_truncate+0x23/0x40 fs/open.c:153
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x5e/0xd3
RIP: 0033:0x7fc5c6efd0d9
RSP: 002b:00007fc5c546f168 EFLAGS: 00000246 ORIG_RAX: 000000000000004c
RAX: ffffffffffffffda RBX: 00007fc5c701cf80 RCX: 00007fc5c6efd0d9
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000020000040
RBP: 00007fc5c6f58ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff46f26c7f R14: 00007fc5c546f300 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: ffff8880470676d8
RIP: fat_get_block+0x647/0x750 fs/fat/inode.c:176 RSP: ffff8880470676d8
---[ end trace b637ce6bd54ab58b ]---