Process accounting resumed ------------[ cut here ]------------ kernel BUG at fs/fat/inode.c:161! invalid opcode: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 0 PID: 11630 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: ffff88809897c6c0 task.stack: ffff88803be60000 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:ffff88803be675f0 EFLAGS: 00010216 RAX: 0000000000040000 RBX: ffff8880389022a0 RCX: ffffc90009cba000 RDX: 000000000000a636 RSI: ffffffff81d001f7 RDI: ffff8880a3eb3058 RBP: ffff8880a3eb3110 R08: ffff88803be67688 R09: 0000000000000000 R10: 0000000000000000 R11: ffff88809897c6c0 R12: ffff88808d4b6440 R13: 0000000000000000 R14: 000000000000000b R15: 0000000000000001 FS: 00007f652ae63700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f80c7294988 CR3: 000000009af35000 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 __kernel_write+0xf5/0x330 fs/read_write.c:501 do_acct_process+0xba6/0xfe0 kernel/acct.c:520 acct_pin_kill+0x27/0x100 kernel/acct.c:174 pin_kill+0x14a/0x650 fs/fs_pin.c:50 SYSC_acct kernel/acct.c:291 [inline] SyS_acct+0x5e9/0x850 kernel/acct.c:273 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f652c8f10c9 RSP: 002b:00007f652ae63168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a3 RAX: ffffffffffffffda RBX: 00007f652ca10f80 RCX: 00007f652c8f10c9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f652c94cae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff6cef6a2f R14: 00007f652ae63300 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: ffff88803be675f0 RIP: fat_get_block+0x647/0x750 fs/fat/inode.c:176 RSP: ffff88803be675f0 ---[ end trace 4294dd44aaf60f62 ]---