syzbot


WARNING in attr_data_get_block

Status: upstream: reported on 2022/11/01 18:01
Reported-by: syzbot+02b932550da4a4ee1dae@syzkaller.appspotmail.com
First crash: 29d, last: 29d

Sample crash report:
------------[ cut here ]------------
DEBUG_RWSEMS_WARN_ON(sem->magic != sem): count = 0x100, magic = 0x0, owner = 0xffff88802168d7c1, curr 0xffff88802168d7c0, list not empty
WARNING: CPU: 0 PID: 32351 at kernel/locking/rwsem.c:1335 __up_read+0x4f5/0x690 kernel/locking/rwsem.c:1335
Modules linked in:
CPU: 0 PID: 32351 Comm: syz-executor.1 Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
RIP: 0010:__up_read+0x4f5/0x690 kernel/locking/rwsem.c:1335
Code: c7 e0 78 8d 8a 48 c7 c6 e0 7a 8d 8a 48 8b 54 24 20 48 8b 4c 24 28 4d 89 f8 4c 8b 4c 24 30 31 c0 53 e8 0f 89 e8 ff 48 83 c4 08 <0f> 0b 48 bb 00 00 00 00 00 fc ff df 4c 8b 6c 24 18 e9 ba fb ff ff
RSP: 0018:ffffc90015c15e80 EFLAGS: 00010292
RAX: 3a348d4940a5a400 RBX: ffffffff8a8d79e0 RCX: 0000000000040000
RDX: ffffc90005131000 RSI: 0000000000006bc0 RDI: 0000000000006bc1
RBP: ffffc90015c15f50 R08: ffffffff816b8dfd R09: fffff52002b82b89
R10: fffff52002b82b89 R11: 1ffff92002b82b88 R12: ffff8880840cd2c8
R13: ffff8880840cd2b8 R14: 1ffff11010819a59 R15: ffff88802168d7c1
FS:  00007f4c6bb8b700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110f338967 CR3: 00000000345bc000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 attr_data_get_block+0x198/0x2370 fs/ntfs3/attrib.c:901
 ntfs_get_block_vbo+0x310/0xe40 fs/ntfs3/inode.c:564
 do_mpage_readpage+0x970/0x1c50 fs/mpage.c:208
 mpage_readahead+0x210/0x380 fs/mpage.c:361
 read_pages+0x169/0x9c0 mm/readahead.c:161
 page_cache_ra_unbounded+0x703/0x820 mm/readahead.c:270
 page_cache_sync_readahead include/linux/pagemap.h:1213 [inline]
 filemap_get_pages+0x465/0x10d0 mm/filemap.c:2581
 filemap_read+0x3cf/0xea0 mm/filemap.c:2675
 __kernel_read+0x3fc/0x830 fs/read_write.c:428
 integrity_kernel_read+0xac/0xf0 security/integrity/iint.c:199
 ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:485 [inline]
 ima_calc_file_shash security/integrity/ima/ima_crypto.c:516 [inline]
 ima_calc_file_hash+0x178f/0x1ca0 security/integrity/ima/ima_crypto.c:573
 ima_collect_measurement+0x444/0x8c0 security/integrity/ima/ima_api.c:292
 process_measurement+0xf4b/0x1bd0 security/integrity/ima/ima_main.c:337
 ima_file_check+0xd8/0x130 security/integrity/ima/ima_main.c:517
 do_open fs/namei.c:3559 [inline]
 path_openat+0x2642/0x2df0 fs/namei.c:3713
 do_file_open_root+0x339/0x790 fs/namei.c:3765
 file_open_root+0x234/0x290 fs/open.c:1290
 do_handle_open+0x565/0x950 fs/fhandle.c:232
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f4c6ae8b5a9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4c6bb8b168 EFLAGS: 00000246 ORIG_RAX: 0000000000000130
RAX: ffffffffffffffda RBX: 00007f4c6afabf80 RCX: 00007f4c6ae8b5a9
RDX: 0000000000020000 RSI: 0000000020000000 RDI: 0000000000000003
RBP: 00007f4c6aee67b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffddae2ed6f R14: 00007f4c6bb8b300 R15: 0000000000022000
 </TASK>

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-upstream-fs 2022/10/28 17:55 upstream b229b6ca5abb 8168b69e .config log report info WARNING in attr_data_get_block
* Struck through repros no longer work on HEAD.