syzbot


WARNING in untrack_pfn

Status: auto-obsoleted due to no activity on 2023/08/21 02:48
Reported-by: syzbot+cf5c4eec7cbc76789db9@syzkaller.appspotmail.com
First crash: 586d, last: 578d
Similar bugs (9)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in untrack_pfn kernel C done error 128 240d 2312d 0/28 auto-obsoleted due to no activity on 2024/07/03 15:42
android-49 WARNING in untrack_pfn syz 35 1814d 2048d 0/3 public: reported syz repro on 2019/04/14 09:28
linux-5.15 WARNING in untrack_pfn origin:lts-only C done 7 20d 491d 0/3 upstream: reported C repro on 2023/07/19 07:05
linux-4.19 WARNING in untrack_pfn C error 24 673d 1935d 0/1 upstream: reported C repro on 2019/08/05 09:38
linux-4.14 WARNING in untrack_pfn C inconclusive 27 666d 1927d 0/1 upstream: reported C repro on 2019/08/13 08:40
android-44 WARNING in untrack_pfn C 211 2080d 2453d 0/2 closed as invalid on 2019/03/16 01:21
android-414 WARNING in untrack_pfn syz 1 2160d 2049d 0/1 public: reported syz repro on 2019/04/13 00:01
linux-6.1 WARNING in untrack_pfn (2) origin:lts-only C done 4 320d 444d 0/3 upstream: reported C repro on 2023/09/04 06:46
android-44 WARNING in untrack_pfn (2) C 71 1814d 2051d 0/2 public: reported C repro on 2019/04/11 08:44

Sample crash report:
RBP: 00007fae9bc131d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007fff057fd1ef R14: 00007fae9bc13300 R15: 0000000000022000
 </TASK>
------------[ cut here ]------------
WARNING: CPU: 0 PID: 1136 at arch/x86/mm/pat/memtype.c:1108 untrack_pfn+0x30e/0x490
Modules linked in:
CPU: 0 PID: 1136 Comm: syz-executor.0 Not tainted 6.1.25-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
RIP: 0010:untrack_pfn+0x30e/0x490 arch/x86/mm/pat/memtype.c:1108
Code: 8d 8c 24 a0 00 00 00 49 89 d8 e8 1d 74 8d 00 49 89 dd 89 c3 31 ff 89 c6 e8 3f 3e 4b 00 85 db 0f 84 b2 00 00 00 e8 d2 3a 4b 00 <0f> 0b 48 bb 00 00 00 00 00 fc ff df eb 4f 48 b8 00 00 00 00 00 fc
RSP: 0018:ffffc9000c557380 EFLAGS: 00010246
RAX: ffffffff813e541e RBX: 00000000ffffffea RCX: 0000000000040000
RDX: ffffc90003c21000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc9000c557490 R08: ffffffff813e5411 R09: ffffffff8a739aa5
R10: 0000000000000003 R11: ffff888029d41d40 R12: 1ffff11003920af3
R13: ffffc9000c557400 R14: dffffc0000000000 R15: ffff88801c905798
FS:  00007fae9bc13700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fae9bbf2718 CR3: 0000000083485000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 unmap_single_vma+0x1e3/0x290 mm/memory.c:1659
 unmap_vmas+0x3c4/0x560 mm/memory.c:1720
 exit_mmap+0x252/0x9f0 mm/mmap.c:3089
 __mmput+0x115/0x3c0 kernel/fork.c:1191
 mmput kernel/fork.c:1213 [inline]
 dup_mm+0x11f0/0x1610 kernel/fork.c:1548
 copy_mm+0xca/0x160 kernel/fork.c:1581
 copy_process+0x19a2/0x4020 kernel/fork.c:2259
 kernel_clone+0x222/0x920 kernel/fork.c:2679
 __do_sys_clone kernel/fork.c:2820 [inline]
 __se_sys_clone kernel/fork.c:2804 [inline]
 __x64_sys_clone+0x231/0x280 kernel/fork.c:2804
 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: 0033:0x7fae9ae8c169
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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:00007fae9bc13118 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fae9afabf80 RCX: 00007fae9ae8c169
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fae9bc131d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007fff057fd1ef R14: 00007fae9bc13300 R15: 0000000000022000
 </TASK>

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/04/23 02:47 linux-6.1.y f17b0ab65d17 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in untrack_pfn
2023/04/15 02:05 linux-6.1.y 0102425ac76b ec410564 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in untrack_pfn
* Struck through repros no longer work on HEAD.