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general protection fault in mt_validate

Status: auto-obsoleted due to no activity on 2023/10/18 14:27
Subsystems: mm
[Documentation on labels]
Reported-by: syzbot+6c0c8f9846801f6fbec0@syzkaller.appspotmail.com
First crash: 322d, last: 310d
Cause bisection: failed (error log, bisect log)
  
Fix bisection: failed (error log, bisect log)
  
▶ ▼ Discussions (2)
Title Replies (including bot) Last reply
[syzbot] Monthly mm report (Jul 2023) 0 (1) 2023/07/10 12:44
[syzbot] [mm?] general protection fault in mt_validate 0 (1) 2023/07/02 01:26
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2023/10/18 14:00 27m retest repro upstream OK log
2023/08/27 16:37 29m retest repro upstream OK log
2023/08/27 16:37 44m retest repro upstream OK log
2023/08/27 16:37 44m retest repro upstream OK log
2023/08/27 16:37 30m retest repro upstream OK log
2023/08/22 12:32 42m (2) retest repro upstream OK log
2023/08/22 12:32 38m retest repro upstream OK log
2023/08/22 12:32 43m retest repro upstream OK log
2023/08/22 12:32 1h09m retest repro upstream OK log
2023/08/22 12:32 48m retest repro upstream OK log
▶ ▼ Cause bisection attempts (2)
Created Duration User Patch Repo Result
2023/07/27 22:00 12h19m bisect upstream error job log (0)
2023/07/04 01:06 12h29m bisect upstream error job log (0)
marked invalid by nogikh@google.com

Sample crash report:
RDX: 0000000000010000 RSI: 0000000000010000 RDI: 00007f8951937000
RBP: 00007f8951937000 R08: 0000000000000000 R09: 000000000000028b
R10: 0000000000010000 R11: 0000000000000246 R12: 00007f8959d786b8
R13: 00007f8959d78180 R14: 00007f8959d781c0 R15: 0030656c69662f2e
 </TASK>
general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 PID: 5230 Comm: syz-executor336 Not tainted 6.4.0-syzkaller-10173-ga901a3568fd2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
RIP: 0010:mas_validate_gaps lib/maple_tree.c:7002 [inline]
RIP: 0010:mt_validate+0x4117/0x5ca0 lib/maple_tree.c:7224
Code: 5f 11 db f6 4d 8d a7 a0 00 00 00 31 db 44 89 f0 48 89 44 24 38 48 8d 1c c3 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 fb c0 33 f7 48 8b 1b 48 89 df 4c 8b
RSP: 0018:ffffc900043cf7a0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006
RBP: ffffc900043cf990 R08: ffffffff8ab0e019 R09: 1ffffffff1d2f9d5
R10: dffffc0000000000 R11: fffffbfff1d2f9d6 R12: ffff888027ddf6a0
R13: ffff888027ddf600 R14: 0000000000000000 R15: ffff888027ddf600
FS:  00007f8959d78700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0aae94e095 CR3: 0000000076c47000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 validate_mm+0xe7/0x500 mm/mmap.c:300
 do_vmi_align_munmap+0x13b1/0x15c0 mm/mmap.c:2561
 do_vmi_munmap+0x24d/0x2d0 mm/mmap.c:2619
 __vm_munmap+0x230/0x450 mm/mmap.c:2899
 __do_sys_munmap mm/mmap.c:2916 [inline]
 __se_sys_munmap mm/mmap.c:2913 [inline]
 __x64_sys_munmap+0x69/0x80 mm/mmap.c:2913
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f8959dcc097
Code: 00 00 00 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb 85 66 2e 0f 1f 84 00 00 00 00 00 90 b8 0b 00 00 00 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:00007f8959d78168 EFLAGS: 00000246 ORIG_RAX: 000000000000000b
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8959dcc097
RDX: 0000000000010000 RSI: 0000000000010000 RDI: 00007f8951937000
RBP: 00007f8951937000 R08: 0000000000000000 R09: 000000000000028b
R10: 0000000000010000 R11: 0000000000000246 R12: 00007f8959d786b8
R13: 00007f8959d78180 R14: 00007f8959d781c0 R15: 0030656c69662f2e
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:mas_validate_gaps lib/maple_tree.c:7002 [inline]
RIP: 0010:mt_validate+0x4117/0x5ca0 lib/maple_tree.c:7224
Code: 5f 11 db f6 4d 8d a7 a0 00 00 00 31 db 44 89 f0 48 89 44 24 38 48 8d 1c c3 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 fb c0 33 f7 48 8b 1b 48 89 df 4c 8b
RSP: 0018:ffffc900043cf7a0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006
RBP: ffffc900043cf990 R08: ffffffff8ab0e019 R09: 1ffffffff1d2f9d5
R10: dffffc0000000000 R11: fffffbfff1d2f9d6 R12: ffff888027ddf6a0
R13: ffff888027ddf600 R14: 0000000000000000 R15: ffff888027ddf600
FS:  00007f8959d78700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0aae94e095 CR3: 0000000076c47000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	5f                   	pop    %rdi
   1:	11 db                	adc    %ebx,%ebx
   3:	f6 4d 8d a7          	testb  $0xa7,-0x73(%rbp)
   7:	a0 00 00 00 31 db 44 	movabs 0xf08944db31000000,%al
   e:	89 f0
  10:	48 89 44 24 38       	mov    %rax,0x38(%rsp)
  15:	48 8d 1c c3          	lea    (%rbx,%rax,8),%rbx
  19:	48 89 d8             	mov    %rbx,%rax
  1c:	48 c1 e8 03          	shr    $0x3,%rax
  20:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  27:	fc ff df
* 2a:	80 3c 08 00          	cmpb   $0x0,(%rax,%rcx,1) <-- trapping instruction
  2e:	74 08                	je     0x38
  30:	48 89 df             	mov    %rbx,%rdi
  33:	e8 fb c0 33 f7       	callq  0xf733c133
  38:	48 8b 1b             	mov    (%rbx),%rbx
  3b:	48 89 df             	mov    %rbx,%rdi
  3e:	4c                   	rex.WR
  3f:	8b                   	.byte 0x8b

Crashes (200):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/07/03 21:24 upstream a901a3568fd2 6e553898 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-smack-root general protection fault in mt_validate
2023/07/04 05:28 upstream a901a3568fd2 6e553898 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs general protection fault in mt_validate
2023/07/02 15:48 upstream dfab92f27c60 bfc47836 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs general protection fault in mt_validate
2023/07/02 09:15 upstream f8566aa4f176 bfc47836 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-selinux-root general protection fault in mt_validate
2023/07/02 08:56 upstream dfab92f27c60 bfc47836 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs general protection fault in mt_validate
2023/07/02 08:05 upstream dfab92f27c60 bfc47836 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs general protection fault in mt_validate
2023/07/02 05:52 upstream dfab92f27c60 bfc47836 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs general protection fault in mt_validate
2023/07/02 04:18 upstream f8566aa4f176 bfc47836 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-root general protection fault in mt_validate
2023/07/02 01:24 upstream f8566aa4f176 bfc47836 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-root general protection fault in mt_validate
2023/07/04 00:05 upstream a901a3568fd2 6e553898 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs KASAN: slab-out-of-bounds Read in mt_validate
2023/07/02 22:57 upstream 995b406c7e97 bfc47836 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs KASAN: slab-out-of-bounds Read in mt_validate
2023/07/02 19:58 upstream 995b406c7e97 bfc47836 .config console log report syz [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs general protection fault in mt_validate
2023/07/02 13:40 upstream dfab92f27c60 bfc47836 .config console log report syz [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs KASAN: slab-out-of-bounds Read in mt_validate
2023/07/04 06:31 upstream a901a3568fd2 6e553898 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs general protection fault in mt_validate
2023/07/04 03:05 upstream a901a3568fd2 6e553898 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root general protection fault in mt_validate
2023/07/04 01:44 upstream a901a3568fd2 6e553898 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs general protection fault in mt_validate
2023/07/03 22:02 upstream a901a3568fd2 6e553898 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in mt_validate
2023/07/03 19:35 upstream a901a3568fd2 6e553898 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs general protection fault in mt_validate
2023/07/03 18:20 upstream a901a3568fd2 49fef1e5 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in mt_validate
2023/07/03 14:48 upstream a901a3568fd2 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs general protection fault in mt_validate
2023/07/03 11:15 upstream a901a3568fd2 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs general protection fault in mt_validate
2023/07/03 10:01 upstream a901a3568fd2 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs general protection fault in mt_validate
2023/07/03 07:40 upstream a901a3568fd2 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root general protection fault in mt_validate
2023/07/03 05:27 upstream 995b406c7e97 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs general protection fault in mt_validate
2023/07/03 05:20 upstream 995b406c7e97 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs general protection fault in mt_validate
2023/07/03 01:52 upstream a901a3568fd2 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root general protection fault in mt_validate
2023/07/03 00:19 upstream 995b406c7e97 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in mt_validate
2023/07/02 22:08 upstream 995b406c7e97 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs general protection fault in mt_validate
2023/07/02 21:00 upstream 995b406c7e97 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root general protection fault in mt_validate
2023/07/02 17:59 upstream 995b406c7e97 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs general protection fault in mt_validate
2023/07/02 16:53 upstream 995b406c7e97 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in mt_validate
2023/07/02 14:44 upstream 995b406c7e97 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root general protection fault in mt_validate
2023/07/02 13:33 upstream 995b406c7e97 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in mt_validate
2023/07/02 11:06 upstream dfab92f27c60 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs general protection fault in mt_validate
2023/07/02 11:05 upstream 995b406c7e97 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root general protection fault in mt_validate
2023/07/02 10:54 upstream f8566aa4f176 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in mt_validate
2023/07/02 10:51 upstream dfab92f27c60 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs general protection fault in mt_validate
2023/07/02 10:34 upstream dfab92f27c60 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs general protection fault in mt_validate
2023/07/02 10:22 upstream dfab92f27c60 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs general protection fault in mt_validate
2023/07/02 09:44 upstream dfab92f27c60 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs general protection fault in mt_validate
2023/07/02 08:41 upstream dfab92f27c60 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs general protection fault in mt_validate
2023/07/02 08:40 upstream dfab92f27c60 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs general protection fault in mt_validate
2023/07/02 08:17 upstream f8566aa4f176 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in mt_validate
2023/07/02 08:03 upstream dfab92f27c60 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs general protection fault in mt_validate
2023/07/02 07:55 upstream f8566aa4f176 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in mt_validate
2023/07/02 07:17 upstream f8566aa4f176 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in mt_validate
2023/07/01 22:24 upstream f8566aa4f176 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce general protection fault in mt_validate
2023/06/21 23:33 upstream e660abd551f1 09ffe269 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in mt_validate
2023/07/03 17:00 upstream a901a3568fd2 6e553898 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 general protection fault in mt_validate
2023/07/02 11:53 upstream 995b406c7e97 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 general protection fault in mt_validate
2023/07/03 06:35 linux-next 296d53d8f84c bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in mt_validate
2023/07/04 04:16 upstream a901a3568fd2 6e553898 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: slab-out-of-bounds Read in mt_validate
2023/07/04 02:49 upstream a901a3568fd2 6e553898 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: slab-out-of-bounds Read in mt_validate
2023/07/03 23:34 upstream a901a3568fd2 6e553898 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: slab-out-of-bounds Read in mt_validate
2023/07/03 20:42 upstream a901a3568fd2 6e553898 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: slab-out-of-bounds Read in mt_validate
2023/07/03 13:13 upstream a901a3568fd2 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: slab-out-of-bounds Read in mt_validate
2023/07/03 12:11 upstream a901a3568fd2 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root KASAN: slab-out-of-bounds Read in mt_validate
2023/07/03 08:45 upstream a901a3568fd2 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: slab-out-of-bounds Read in mt_validate
2023/07/03 04:15 upstream 995b406c7e97 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: slab-out-of-bounds Read in mt_validate
2023/07/03 03:11 upstream 995b406c7e97 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: slab-out-of-bounds Read in mt_validate
2023/07/02 11:11 upstream dfab92f27c60 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: slab-out-of-bounds Read in mt_validate
2023/07/02 09:13 upstream dfab92f27c60 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: slab-out-of-bounds Read in mt_validate
2023/07/02 08:58 upstream dfab92f27c60 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs KASAN: slab-out-of-bounds Read in mt_validate
* Struck through repros no longer work on HEAD.