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* general protection fault in security_inode_getattr
@ 2020-07-29 20:23 syzbot
  2020-08-24 19:37 ` syzbot
  2020-08-25  0:32 ` syzbot
  0 siblings, 2 replies; 5+ messages in thread
From: syzbot @ 2020-07-29 20:23 UTC (permalink / raw)
  To: andriin, ast, bpf, daniel, jmorris, john.fastabend, kafai,
	kpsingh, linux-kernel, linux-security-module, netdev, serge,
	songliubraving, syzkaller-bugs, yhs

Hello,

syzbot found the following issue on:

HEAD commit:    92ed3019 Linux 5.8-rc7
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=140003ac900000
kernel config:  https://syzkaller.appspot.com/x/.config?x=84f076779e989e69
dashboard link: https://syzkaller.appspot.com/bug?extid=f07cc9be8d1d226947ed
compiler:       gcc (GCC) 10.1.0-syz 20200507

Unfortunately, I don't have any reproducer for this issue yet.

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+f07cc9be8d1d226947ed@syzkaller.appspotmail.com

general protection fault, probably for non-canonical address 0xdffffc000000000c: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000060-0x0000000000000067]
CPU: 0 PID: 9214 Comm: syz-executor.3 Not tainted 5.8.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:d_backing_inode include/linux/dcache.h:549 [inline]
RIP: 0010:security_inode_getattr+0x46/0x140 security/security.c:1276
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 04 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5d 08 48 8d 7b 60 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 d7 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b
RSP: 0018:ffffc9000d41f638 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000f539000
RDX: 000000000000000c RSI: ffffffff8354f8ee RDI: 0000000000000060
RBP: ffffc9000d41f810 R08: 0000000000000001 R09: ffff88804edc2dc8
R10: 0000000000000000 R11: 00000000000ebc58 R12: ffff888089f10170
R13: ffffc9000d41f810 R14: 00000000000007ff R15: 0000000000000000
FS:  00007f3599717700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2c12c000 CR3: 0000000099919000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 vfs_getattr+0x22/0x60 fs/stat.c:121
 ovl_copy_up_one+0x13b/0x1870 fs/overlayfs/copy_up.c:850
 ovl_copy_up_flags+0x14b/0x1d0 fs/overlayfs/copy_up.c:931
 ovl_maybe_copy_up+0x140/0x190 fs/overlayfs/copy_up.c:963
 ovl_open+0xba/0x270 fs/overlayfs/file.c:147
 do_dentry_open+0x501/0x1290 fs/open.c:828
 do_open fs/namei.c:3243 [inline]
 path_openat+0x1bb9/0x2750 fs/namei.c:3360
 do_filp_open+0x17e/0x3c0 fs/namei.c:3387
 file_open_name+0x290/0x400 fs/open.c:1124
 acct_on+0x78/0x770 kernel/acct.c:207
 __do_sys_acct kernel/acct.c:286 [inline]
 __se_sys_acct kernel/acct.c:273 [inline]
 __x64_sys_acct+0xab/0x1f0 kernel/acct.c:273
 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:384
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45c369
Code: 8d b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 5b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f3599716c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a3
RAX: ffffffffffffffda RBX: 0000000000000700 RCX: 000000000045c369
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000440
RBP: 000000000078bf30 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bf0c
R13: 00007ffda41ffbef R14: 00007f35997179c0 R15: 000000000078bf0c
Modules linked in:
---[ end trace d1398a63985d3915 ]---
RIP: 0010:d_backing_inode include/linux/dcache.h:549 [inline]
RIP: 0010:security_inode_getattr+0x46/0x140 security/security.c:1276
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 04 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5d 08 48 8d 7b 60 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 d7 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b
RSP: 0018:ffffc9000d41f638 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000f539000
RDX: 000000000000000c RSI: ffffffff8354f8ee RDI: 0000000000000060
RBP: ffffc9000d41f810 R08: 0000000000000001 R09: ffff88804edc2dc8
R10: 0000000000000000 R11: 00000000000ebc58 R12: ffff888089f10170
R13: ffffc9000d41f810 R14: 00000000000007ff R15: 0000000000000000
FS:  00007f3599717700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000440 CR3: 0000000099919000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400


---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@googlegroups.com.

syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.

^ permalink raw reply	[flat|nested] 5+ messages in thread

* Re: general protection fault in security_inode_getattr
  2020-07-29 20:23 general protection fault in security_inode_getattr syzbot
@ 2020-08-24 19:37 ` syzbot
  2020-08-24 21:00   ` Ondrej Mosnacek
  2020-08-25  0:32 ` syzbot
  1 sibling, 1 reply; 5+ messages in thread
From: syzbot @ 2020-08-24 19:37 UTC (permalink / raw)
  To: andriin, ast, bpf, daniel, jmorris, john.fastabend, kafai,
	kpsingh, linux-kernel, linux-security-module, netdev, serge,
	songliubraving, syzkaller-bugs, yhs

syzbot has found a reproducer for the following issue on:

HEAD commit:    d012a719 Linux 5.9-rc2
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=14aa130e900000
kernel config:  https://syzkaller.appspot.com/x/.config?x=891ca5711a9f1650
dashboard link: https://syzkaller.appspot.com/bug?extid=f07cc9be8d1d226947ed
compiler:       clang version 10.0.0 (https://github.com/llvm/llvm-project/ c2443155a0fb245c8f17f2c1c72b6ea391e86e81)
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=104a650e900000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+f07cc9be8d1d226947ed@syzkaller.appspotmail.com

general protection fault, probably for non-canonical address 0xdffffc000000000d: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000068-0x000000000000006f]
CPU: 1 PID: 32288 Comm: syz-executor.3 Not tainted 5.9.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:d_backing_inode include/linux/dcache.h:549 [inline]
RIP: 0010:security_inode_getattr+0x42/0x140 security/security.c:1276
Code: 1b fe 49 8d 5e 08 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 bc b4 5b fe 48 8b 1b 48 83 c3 68 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 9f b4 5b fe 48 8b 1b 48 83 c3 0c
RSP: 0018:ffffc9000a017750 EFLAGS: 00010202
RAX: 000000000000000d RBX: 0000000000000068 RCX: ffff888093ec6180
RDX: 0000000000000000 RSI: ffffc9000a017860 RDI: ffffc9000a017850
RBP: ffffc9000a017850 R08: dffffc0000000000 R09: ffffc9000a017850
R10: fffff52001402f0c R11: 0000000000000000 R12: ffffc9000a017860
R13: 0000000000008401 R14: ffffc9000a017850 R15: dffffc0000000000
FS:  00007f292d4ef700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30920074 CR3: 00000000937fd000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 vfs_getattr+0x21/0x60 fs/stat.c:121
 ovl_copy_up_one fs/overlayfs/copy_up.c:850 [inline]
 ovl_copy_up_flags+0x2ef/0x2a00 fs/overlayfs/copy_up.c:931
 ovl_maybe_copy_up+0x154/0x180 fs/overlayfs/copy_up.c:963
 ovl_open+0xa2/0x200 fs/overlayfs/file.c:147
 do_dentry_open+0x7c8/0x1010 fs/open.c:817
 do_open fs/namei.c:3251 [inline]
 path_openat+0x2794/0x3840 fs/namei.c:3368
 do_filp_open+0x191/0x3a0 fs/namei.c:3395
 file_open_name+0x321/0x430 fs/open.c:1113
 acct_on kernel/acct.c:207 [inline]
 __do_sys_acct kernel/acct.c:286 [inline]
 __se_sys_acct+0x122/0x6f0 kernel/acct.c:273
 do_syscall_64+0x31/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45d579
Code: 5d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f292d4eec78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a3
RAX: ffffffffffffffda RBX: 0000000000000700 RCX: 000000000045d579
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040
RBP: 000000000118cf70 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c
R13: 00007ffc8e04bc4f R14: 00007f292d4ef9c0 R15: 000000000118cf4c
Modules linked in:
---[ end trace 7e4f1041b188e411 ]---
RIP: 0010:d_backing_inode include/linux/dcache.h:549 [inline]
RIP: 0010:security_inode_getattr+0x42/0x140 security/security.c:1276
Code: 1b fe 49 8d 5e 08 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 bc b4 5b fe 48 8b 1b 48 83 c3 68 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 9f b4 5b fe 48 8b 1b 48 83 c3 0c
RSP: 0018:ffffc9000a017750 EFLAGS: 00010202
RAX: 000000000000000d RBX: 0000000000000068 RCX: ffff888093ec6180
RDX: 0000000000000000 RSI: ffffc9000a017860 RDI: ffffc9000a017850
RBP: ffffc9000a017850 R08: dffffc0000000000 R09: ffffc9000a017850
R10: fffff52001402f0c R11: 0000000000000000 R12: ffffc9000a017860
R13: 0000000000008401 R14: ffffc9000a017850 R15: dffffc0000000000
FS:  00007f292d4ef700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fef820e7000 CR3: 00000000937fd000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400


^ permalink raw reply	[flat|nested] 5+ messages in thread

* Re: general protection fault in security_inode_getattr
  2020-08-24 19:37 ` syzbot
@ 2020-08-24 21:00   ` Ondrej Mosnacek
  0 siblings, 0 replies; 5+ messages in thread
From: Ondrej Mosnacek @ 2020-08-24 21:00 UTC (permalink / raw)
  To: syzbot
  Cc: andriin, Alexei Starovoitov, bpf, Daniel Borkmann, James Morris,
	john.fastabend, kafai, KP Singh, Linux kernel mailing list,
	Linux Security Module list, network dev, Serge E. Hallyn,
	songliubraving, syzkaller-bugs, yhs, linux-fsdevel,
	Miklos Szeredi, linux-unionfs

On Mon, Aug 24, 2020 at 9:37 PM syzbot
<syzbot+f07cc9be8d1d226947ed@syzkaller.appspotmail.com> wrote:
> syzbot has found a reproducer for the following issue on:

Looping in fsdevel and OverlayFS maintainers, as this seems to be
FS/OverlayFS related...

See also original report against 5.8-rc7:
https://lore.kernel.org/linux-security-module/0000000000008caae305ab9a5318@google.com/T/

>
> HEAD commit:    d012a719 Linux 5.9-rc2
> git tree:       upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=14aa130e900000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=891ca5711a9f1650
> dashboard link: https://syzkaller.appspot.com/bug?extid=f07cc9be8d1d226947ed
> compiler:       clang version 10.0.0 (https://github.com/llvm/llvm-project/ c2443155a0fb245c8f17f2c1c72b6ea391e86e81)
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=104a650e900000
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+f07cc9be8d1d226947ed@syzkaller.appspotmail.com
>
> general protection fault, probably for non-canonical address 0xdffffc000000000d: 0000 [#1] PREEMPT SMP KASAN
> KASAN: null-ptr-deref in range [0x0000000000000068-0x000000000000006f]
> CPU: 1 PID: 32288 Comm: syz-executor.3 Not tainted 5.9.0-rc2-syzkaller #0
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
> RIP: 0010:d_backing_inode include/linux/dcache.h:549 [inline]
> RIP: 0010:security_inode_getattr+0x42/0x140 security/security.c:1276
> Code: 1b fe 49 8d 5e 08 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 bc b4 5b fe 48 8b 1b 48 83 c3 68 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 9f b4 5b fe 48 8b 1b 48 83 c3 0c
> RSP: 0018:ffffc9000a017750 EFLAGS: 00010202
> RAX: 000000000000000d RBX: 0000000000000068 RCX: ffff888093ec6180
> RDX: 0000000000000000 RSI: ffffc9000a017860 RDI: ffffc9000a017850
> RBP: ffffc9000a017850 R08: dffffc0000000000 R09: ffffc9000a017850
> R10: fffff52001402f0c R11: 0000000000000000 R12: ffffc9000a017860
> R13: 0000000000008401 R14: ffffc9000a017850 R15: dffffc0000000000
> FS:  00007f292d4ef700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
> CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 0000001b30920074 CR3: 00000000937fd000 CR4: 00000000001506e0
> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
> Call Trace:
>  vfs_getattr+0x21/0x60 fs/stat.c:121
>  ovl_copy_up_one fs/overlayfs/copy_up.c:850 [inline]
>  ovl_copy_up_flags+0x2ef/0x2a00 fs/overlayfs/copy_up.c:931
>  ovl_maybe_copy_up+0x154/0x180 fs/overlayfs/copy_up.c:963
>  ovl_open+0xa2/0x200 fs/overlayfs/file.c:147
>  do_dentry_open+0x7c8/0x1010 fs/open.c:817
>  do_open fs/namei.c:3251 [inline]
>  path_openat+0x2794/0x3840 fs/namei.c:3368
>  do_filp_open+0x191/0x3a0 fs/namei.c:3395
>  file_open_name+0x321/0x430 fs/open.c:1113
>  acct_on kernel/acct.c:207 [inline]
>  __do_sys_acct kernel/acct.c:286 [inline]
>  __se_sys_acct+0x122/0x6f0 kernel/acct.c:273
>  do_syscall_64+0x31/0x70 arch/x86/entry/common.c:46
>  entry_SYSCALL_64_after_hwframe+0x44/0xa9
> RIP: 0033:0x45d579
> Code: 5d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00
> RSP: 002b:00007f292d4eec78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a3
> RAX: ffffffffffffffda RBX: 0000000000000700 RCX: 000000000045d579
> RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040
> RBP: 000000000118cf70 R08: 0000000000000000 R09: 0000000000000000
> R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c
> R13: 00007ffc8e04bc4f R14: 00007f292d4ef9c0 R15: 000000000118cf4c
> Modules linked in:
> ---[ end trace 7e4f1041b188e411 ]---
> RIP: 0010:d_backing_inode include/linux/dcache.h:549 [inline]
> RIP: 0010:security_inode_getattr+0x42/0x140 security/security.c:1276
> Code: 1b fe 49 8d 5e 08 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 bc b4 5b fe 48 8b 1b 48 83 c3 68 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 9f b4 5b fe 48 8b 1b 48 83 c3 0c
> RSP: 0018:ffffc9000a017750 EFLAGS: 00010202
> RAX: 000000000000000d RBX: 0000000000000068 RCX: ffff888093ec6180
> RDX: 0000000000000000 RSI: ffffc9000a017860 RDI: ffffc9000a017850
> RBP: ffffc9000a017850 R08: dffffc0000000000 R09: ffffc9000a017850
> R10: fffff52001402f0c R11: 0000000000000000 R12: ffffc9000a017860
> R13: 0000000000008401 R14: ffffc9000a017850 R15: dffffc0000000000
> FS:  00007f292d4ef700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
> CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 00007fef820e7000 CR3: 00000000937fd000 CR4: 00000000001506e0
> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>

-- 
Ondrej Mosnacek
Software Engineer, Platform Security - SELinux kernel
Red Hat, Inc.


^ permalink raw reply	[flat|nested] 5+ messages in thread

* Re: general protection fault in security_inode_getattr
  2020-07-29 20:23 general protection fault in security_inode_getattr syzbot
  2020-08-24 19:37 ` syzbot
@ 2020-08-25  0:32 ` syzbot
  2020-08-25  0:48   ` Yonghong Song
  1 sibling, 1 reply; 5+ messages in thread
From: syzbot @ 2020-08-25  0:32 UTC (permalink / raw)
  To: andriin, ast, bpf, daniel, jmorris, john.fastabend, kafai,
	kpsingh, linux-fsdevel, linux-kernel, linux-security-module,
	linux-unionfs, miklos, netdev, omosnace, serge, songliubraving,
	syzkaller-bugs, yhs

syzbot has bisected this issue to:

commit 35697c12d7ffd31a56d3c9604066a166b75d0169
Author: Yonghong Song <yhs@fb.com>
Date:   Thu Jan 16 17:40:04 2020 +0000

    selftests/bpf: Fix test_progs send_signal flakiness with nmi mode

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=13032139900000
start commit:   d012a719 Linux 5.9-rc2
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=10832139900000
console output: https://syzkaller.appspot.com/x/log.txt?x=17032139900000
kernel config:  https://syzkaller.appspot.com/x/.config?x=891ca5711a9f1650
dashboard link: https://syzkaller.appspot.com/bug?extid=f07cc9be8d1d226947ed
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=104a650e900000

Reported-by: syzbot+f07cc9be8d1d226947ed@syzkaller.appspotmail.com
Fixes: 35697c12d7ff ("selftests/bpf: Fix test_progs send_signal flakiness with nmi mode")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection

^ permalink raw reply	[flat|nested] 5+ messages in thread

* Re: general protection fault in security_inode_getattr
  2020-08-25  0:32 ` syzbot
@ 2020-08-25  0:48   ` Yonghong Song
  0 siblings, 0 replies; 5+ messages in thread
From: Yonghong Song @ 2020-08-25  0:48 UTC (permalink / raw)
  To: syzbot, andriin, ast, bpf, daniel, jmorris, john.fastabend,
	kafai, kpsingh, linux-fsdevel, linux-kernel,
	linux-security-module, linux-unionfs, miklos, netdev, omosnace,
	serge, songliubraving, syzkaller-bugs



On 8/24/20 5:32 PM, syzbot wrote:
> syzbot has bisected this issue to:
> 
> commit 35697c12d7ffd31a56d3c9604066a166b75d0169
> Author: Yonghong Song <yhs@fb.com>
> Date:   Thu Jan 16 17:40:04 2020 +0000
> 
>      selftests/bpf: Fix test_progs send_signal flakiness with nmi mode

The above patch changed file:
     tools/testing/selftests/bpf/prog_tests/send_signal.c
It is unlikely it caused the issue.

> 
> bisection log:  https://urldefense.proofpoint.com/v2/url?u=https-3A__syzkaller.appspot.com_x_bisect.txt-3Fx-3D13032139900000&d=DwIBaQ&c=5VD0RTtNlTh3ycd41b3MUw&r=DA8e1B5r073vIqRrFz7MRA&m=854z77F3pbTpgGUCFUwM1OSEUj4NbiNIZsaad0Xg4qc&s=Le6D_jfzkec28_qNhbUwMesaUeBGaKEG6RLN3ZCzE1s&e=
> start commit:   d012a719 Linux 5.9-rc2
> git tree:       upstream
> final oops:     https://urldefense.proofpoint.com/v2/url?u=https-3A__syzkaller.appspot.com_x_report.txt-3Fx-3D10832139900000&d=DwIBaQ&c=5VD0RTtNlTh3ycd41b3MUw&r=DA8e1B5r073vIqRrFz7MRA&m=854z77F3pbTpgGUCFUwM1OSEUj4NbiNIZsaad0Xg4qc&s=VbLXb22TgxAtiPQTEq0t5r0WgNDiFwstWKnme0tWBLE&e=
> console output: https://urldefense.proofpoint.com/v2/url?u=https-3A__syzkaller.appspot.com_x_log.txt-3Fx-3D17032139900000&d=DwIBaQ&c=5VD0RTtNlTh3ycd41b3MUw&r=DA8e1B5r073vIqRrFz7MRA&m=854z77F3pbTpgGUCFUwM1OSEUj4NbiNIZsaad0Xg4qc&s=yu72HnqjHzOTtJ5dyD7q0QW9sOwEO6pPHjeYTTutKdc&e=
> kernel config:  https://urldefense.proofpoint.com/v2/url?u=https-3A__syzkaller.appspot.com_x_.config-3Fx-3D891ca5711a9f1650&d=DwIBaQ&c=5VD0RTtNlTh3ycd41b3MUw&r=DA8e1B5r073vIqRrFz7MRA&m=854z77F3pbTpgGUCFUwM1OSEUj4NbiNIZsaad0Xg4qc&s=6cylIRBZjHQmgkJQoofuLN2XSifb-13qrrj58PQpBYs&e=
> dashboard link: https://urldefense.proofpoint.com/v2/url?u=https-3A__syzkaller.appspot.com_bug-3Fextid-3Df07cc9be8d1d226947ed&d=DwIBaQ&c=5VD0RTtNlTh3ycd41b3MUw&r=DA8e1B5r073vIqRrFz7MRA&m=854z77F3pbTpgGUCFUwM1OSEUj4NbiNIZsaad0Xg4qc&s=siCrm2aO-fzR3Nym_zaPQQnmxMlJo0bRj87zgm7o5mY&e=
> syz repro:      https://urldefense.proofpoint.com/v2/url?u=https-3A__syzkaller.appspot.com_x_repro.syz-3Fx-3D104a650e900000&d=DwIBaQ&c=5VD0RTtNlTh3ycd41b3MUw&r=DA8e1B5r073vIqRrFz7MRA&m=854z77F3pbTpgGUCFUwM1OSEUj4NbiNIZsaad0Xg4qc&s=yNEvyRe2bO4AKgq2UuJc32katp4k4UGKwMUDEBlhM7E&e=
> 
> Reported-by: syzbot+f07cc9be8d1d226947ed@syzkaller.appspotmail.com
> Fixes: 35697c12d7ff ("selftests/bpf: Fix test_progs send_signal flakiness with nmi mode")
> 
> For information about bisection process see: https://urldefense.proofpoint.com/v2/url?u=https-3A__goo.gl_tpsmEJ-23bisection&d=DwIBaQ&c=5VD0RTtNlTh3ycd41b3MUw&r=DA8e1B5r073vIqRrFz7MRA&m=854z77F3pbTpgGUCFUwM1OSEUj4NbiNIZsaad0Xg4qc&s=K4KdZK8rBgxDv4M9uwEndkCB4mCatTH-opwefN-0b-M&e=
> 

^ permalink raw reply	[flat|nested] 5+ messages in thread

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Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-07-29 20:23 general protection fault in security_inode_getattr syzbot
2020-08-24 19:37 ` syzbot
2020-08-24 21:00   ` Ondrej Mosnacek
2020-08-25  0:32 ` syzbot
2020-08-25  0:48   ` Yonghong Song

Linux-Security-Module Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-security-module/0 linux-security-module/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-security-module linux-security-module/ https://lore.kernel.org/linux-security-module \
		linux-security-module@vger.kernel.org
	public-inbox-index linux-security-module

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-security-module


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git