syzbot


WARNING: zero-size vmalloc in ubi_read_volume_table

Status: upstream: reported C repro on 2024/04/01 16:50
Subsystems: mtd
[Documentation on labels]
Reported-by: syzbot+f516089d7815b10197c9@syzkaller.appspotmail.com
First crash: 21d, last: 21d
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [mtd?] WARNING: zero-size vmalloc in ubi_read_volume_table 2 (4) 2024/04/07 06:31
Last patch testing requests (4)
Created Duration User Patch Repo Result
2024/04/14 04:43 22m retest repro upstream error OK
2024/04/14 04:43 28m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci OK log
2024/04/02 06:53 22m eadavis@qq.com patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git fe46a7dd189e OK log
2024/04/02 04:11 1h18m eadavis@qq.com patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master error OK

Sample crash report:
ubi0: scanning is finished
ubi0: empty MTD device detected
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5062 at mm/vmalloc.c:3319 __vmalloc_node_range+0x1065/0x1540 mm/vmalloc.c:3319
Modules linked in:
CPU: 0 PID: 5062 Comm: syz-executor167 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:__vmalloc_node_range+0x1065/0x1540 mm/vmalloc.c:3319
Code: 48 8b 7d 08 e8 bc db ff ff 48 39 c5 0f 85 f3 02 00 00 e8 5e 9e b2 ff 48 89 ef e8 26 8f 02 00 e9 c2 f9 ff ff e8 4c 9e b2 ff 90 <0f> 0b 90 31 db e8 41 9e b2 ff 48 b8 00 00 00 00 00 fc ff df 4d 8d
RSP: 0018:ffffc900033df918 EFLAGS: 00010293
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffffff81da4ac2
RDX: ffff88801976da00 RSI: ffffffff81da5a64 RDI: 0000000000000007
RBP: ffffffff85f10bf9 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8ae00126 R12: 0000000000000000
R13: 1ffff9200067bf3e R14: 0000000000000000 R15: ffff88802ef1a600
FS:  000055556b89e380(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000045e620 CR3: 0000000022954000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __vmalloc_node mm/vmalloc.c:3457 [inline]
 vzalloc+0x6b/0x90 mm/vmalloc.c:3530
 create_empty_lvol drivers/mtd/ubi/vtbl.c:490 [inline]
 ubi_read_volume_table+0x639/0x2a30 drivers/mtd/ubi/vtbl.c:812
 ubi_attach+0x1a2f/0x4af0 drivers/mtd/ubi/attach.c:1601
 ubi_attach_mtd_dev+0x1659/0x3950 drivers/mtd/ubi/build.c:1000
 ctrl_cdev_ioctl+0x339/0x3d0 drivers/mtd/ubi/cdev.c:1043
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:904 [inline]
 __se_sys_ioctl fs/ioctl.c:890 [inline]
 __x64_sys_ioctl+0x193/0x220 fs/ioctl.c:890
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xd2/0x260 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fbab2531369
Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 00 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:00007ffcb56bd0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ffcb56bd298 RCX: 00007fbab2531369
RDX: 0000000020000504 RSI: 0000000040186f40 RDI: 0000000000000003
RBP: 00007fbab25a4610 R08: 0000000000000000 R09: 00007ffcb56bd298
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffcb56bd288 R14: 0000000000000001 R15: 0000000000000001
 </TASK>

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/03/30 18:16 upstream fe46a7dd189e 6baf5069 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING: zero-size vmalloc in ubi_read_volume_table
2024/03/30 19:05 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 707081b61156 6baf5069 .config console log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING: zero-size vmalloc in ubi_read_volume_table
2024/03/30 17:43 upstream fe46a7dd189e 6baf5069 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING: zero-size vmalloc in ubi_read_volume_table
* Struck through repros no longer work on HEAD.