syzbot


kernel BUG in __page_table_check_zero (2)

Status: upstream: reported C repro on 2024/10/31 04:54
Subsystems: mm
[Documentation on labels]
Reported-by: syzbot+ccc0e1cfdb72b664f0d8@syzkaller.appspotmail.com
First crash: 10d, last: 10h38m
Cause bisection: failed (error log, bisect log)
  
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [mm?] kernel BUG in __page_table_check_zero (2) 6 (8) 2024/11/05 21:30
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 kernel BUG in __page_table_check_zero origin:lts-only C inconclusive 3 46d 507d 0/3 upstream: reported C repro on 2023/06/18 21:38
upstream kernel BUG in __page_table_check_zero usb C error done 213 47d 535d 28/28 fixed on 2024/10/22 13:24
Last patch testing requests (1)
Created Duration User Patch Repo Result
2024/10/31 11:17 26m hdanton@sina.com git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git/ mm-hotfixes-unstable OK log

Sample crash report:
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 1a 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:00007ffede422258 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007ffede422280 RCX: 00007f69e1b3c569
RDX: 0000000002000005 RSI: 0000000000003000 RDI: 000000002001a000
RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000080000000
R10: 0000000000011012 R11: 0000000000000246 R12: 00007ffede42227c
R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001
 </TASK>
------------[ cut here ]------------
kernel BUG at mm/page_table_check.c:157!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 1 UID: 0 PID: 5850 Comm: syz-executor279 Not tainted 6.12.0-rc4-syzkaller-00261-g850925a8133c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__page_table_check_zero+0x274/0x350 mm/page_table_check.c:157
Code: c1 0f 8c 39 fe ff ff 48 89 df e8 87 28 f3 ff e9 2c fe ff ff e8 dd 6a 89 ff 90 0f 0b e8 d5 6a 89 ff 90 0f 0b e8 cd 6a 89 ff 90 <0f> 0b f3 0f 1e fa 4c 89 f6 48 81 e6 ff 0f 00 00 31 ff e8 95 6f 89
RSP: 0018:ffffc900046bf6d8 EFLAGS: 00010293
RAX: ffffffff820b7fa3 RBX: dffffc0000000000 RCX: ffff88802fc13c00
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88801e97380c
RBP: ffff88801e97380c R08: ffff88801e97380f R09: 1ffff11003d2e701
R10: dffffc0000000000 R11: ffffed1003d2e702 R12: ffff88801e9737c0
R13: 1ffffffff34887b4 R14: 0000000000000002 R15: 0000000000000000
FS:  0000555570714380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f69e1b92385 CR3: 0000000073ae6000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 page_table_check_free include/linux/page_table_check.h:41 [inline]
 free_pages_prepare mm/page_alloc.c:1109 [inline]
 free_unref_page+0xd0f/0xf20 mm/page_alloc.c:2638
 dec_usb_memory_use_count+0x259/0x350 drivers/usb/core/devio.c:198
 mmap_region+0x2180/0x2a30 mm/mmap.c:1574
 do_mmap+0x8f0/0x1000 mm/mmap.c:496
 vm_mmap_pgoff+0x1dd/0x3d0 mm/util.c:588
 ksys_mmap_pgoff+0x4eb/0x720 mm/mmap.c:542
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f69e1b3c569
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 1a 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:00007ffede422258 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007ffede422280 RCX: 00007f69e1b3c569
RDX: 0000000002000005 RSI: 0000000000003000 RDI: 000000002001a000
RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000080000000
R10: 0000000000011012 R11: 0000000000000246 R12: 00007ffede42227c
R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__page_table_check_zero+0x274/0x350 mm/page_table_check.c:157
Code: c1 0f 8c 39 fe ff ff 48 89 df e8 87 28 f3 ff e9 2c fe ff ff e8 dd 6a 89 ff 90 0f 0b e8 d5 6a 89 ff 90 0f 0b e8 cd 6a 89 ff 90 <0f> 0b f3 0f 1e fa 4c 89 f6 48 81 e6 ff 0f 00 00 31 ff e8 95 6f 89
RSP: 0018:ffffc900046bf6d8 EFLAGS: 00010293
RAX: ffffffff820b7fa3 RBX: dffffc0000000000 RCX: ffff88802fc13c00
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88801e97380c
RBP: ffff88801e97380c R08: ffff88801e97380f R09: 1ffff11003d2e701
R10: dffffc0000000000 R11: ffffed1003d2e702 R12: ffff88801e9737c0
R13: 1ffffffff34887b4 R14: 0000000000000002 R15: 0000000000000000
FS:  0000555570714380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f69e1b92385 CR3: 0000000073ae6000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess):
   0:	28 00                	sub    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	75 05                	jne    0xb
   6:	48 83 c4 28          	add    $0x28,%rsp
   a:	c3                   	ret
   b:	e8 a1 1a 00 00       	call   0x1ab1
  10:	90                   	nop
  11:	48 89 f8             	mov    %rdi,%rax
  14:	48 89 f7             	mov    %rsi,%rdi
  17:	48 89 d6             	mov    %rdx,%rsi
  1a:	48 89 ca             	mov    %rcx,%rdx
  1d:	4d 89 c2             	mov    %r8,%r10
  20:	4d 89 c8             	mov    %r9,%r8
  23:	4c 8b 4c 24 08       	mov    0x8(%rsp),%r9
  28:	0f 05                	syscall
* 2a:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax <-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 c7 c1 b8 ff ff ff 	mov    $0xffffffffffffffb8,%rcx
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Crashes (30):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/10/27 05:05 upstream 850925a8133c 65e8686b .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in __page_table_check_zero
2024/11/06 10:06 upstream 2e1b3cc9d7f7 3a465482 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root kernel BUG in __page_table_check_zero
2024/11/05 19:54 upstream 2e1b3cc9d7f7 509da429 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce kernel BUG in __page_table_check_zero
2024/11/05 13:53 upstream 2e1b3cc9d7f7 509da429 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce kernel BUG in __page_table_check_zero
2024/11/04 04:09 upstream a33ab3f94f51 f00eed24 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce kernel BUG in __page_table_check_zero
2024/11/03 11:57 upstream 3e5e6c9900c3 f00eed24 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce kernel BUG in __page_table_check_zero
2024/11/03 03:07 upstream 11066801dd4b f00eed24 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce kernel BUG in __page_table_check_zero
2024/11/03 02:51 upstream 11066801dd4b f00eed24 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in __page_table_check_zero
2024/11/03 02:06 upstream 11066801dd4b f00eed24 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root kernel BUG in __page_table_check_zero
2024/11/02 23:40 upstream 11066801dd4b f00eed24 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in __page_table_check_zero
2024/11/02 18:49 upstream 11066801dd4b f00eed24 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce kernel BUG in __page_table_check_zero
2024/11/02 14:02 upstream 11066801dd4b f00eed24 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in __page_table_check_zero
2024/11/02 08:43 upstream 11066801dd4b f00eed24 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root kernel BUG in __page_table_check_zero
2024/11/02 04:18 upstream 6c52d4da1c74 f00eed24 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root kernel BUG in __page_table_check_zero
2024/11/02 01:12 upstream 6c52d4da1c74 f00eed24 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce kernel BUG in __page_table_check_zero
2024/11/01 23:08 upstream 6c52d4da1c74 f00eed24 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce kernel BUG in __page_table_check_zero
2024/10/31 10:40 upstream 4236f913808c fb888278 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce kernel BUG in __page_table_check_zero
2024/10/31 10:27 upstream 4236f913808c fb888278 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce kernel BUG in __page_table_check_zero
2024/10/31 02:58 upstream 4236f913808c fb888278 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root kernel BUG in __page_table_check_zero
2024/10/30 19:51 upstream c1e939a21eb1 66aeb999 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root kernel BUG in __page_table_check_zero
2024/10/30 16:15 upstream c1e939a21eb1 66aeb999 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce kernel BUG in __page_table_check_zero
2024/10/30 13:37 upstream c1e939a21eb1 66aeb999 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in __page_table_check_zero
2024/10/30 08:54 upstream c1e939a21eb1 66aeb999 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce kernel BUG in __page_table_check_zero
2024/10/30 08:02 upstream c1e939a21eb1 66aeb999 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce kernel BUG in __page_table_check_zero
2024/10/29 16:31 upstream e42b1a9a2557 66aeb999 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce kernel BUG in __page_table_check_zero
2024/10/27 04:51 upstream 850925a8133c 65e8686b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in __page_table_check_zero
2024/11/06 14:54 upstream 2e1b3cc9d7f7 3a465482 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 kernel BUG in __page_table_check_zero
2024/11/06 08:42 upstream 2e1b3cc9d7f7 3a465482 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 kernel BUG in __page_table_check_zero
2024/11/05 16:04 upstream 2e1b3cc9d7f7 509da429 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 kernel BUG in __page_table_check_zero
2024/11/03 11:12 upstream 3e5e6c9900c3 f00eed24 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 kernel BUG in __page_table_check_zero
* Struck through repros no longer work on HEAD.