* [syzbot] BUG: unable to handle kernel paging request in ovl_set_acl
@ 2022-11-02 16:35 syzbot
2022-11-03 2:35 ` syzbot
0 siblings, 1 reply; 5+ messages in thread
From: syzbot @ 2022-11-02 16:35 UTC (permalink / raw)
To: linux-kernel, linux-unionfs, miklos, syzkaller-bugs
Hello,
syzbot found the following issue on:
HEAD commit: 61c3426aca2c Add linux-next specific files for 20221102
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=178f72ac880000
kernel config: https://syzkaller.appspot.com/x/.config?x=acb529cc910d907c
dashboard link: https://syzkaller.appspot.com/bug?extid=3f6ef1c4586bb6fd1f61
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/cc56d88dd6a3/disk-61c3426a.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/5921b65b080f/vmlinux-61c3426a.xz
kernel image: https://storage.googleapis.com/syzbot-assets/39cbd355fedd/bzImage-61c3426a.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+3f6ef1c4586bb6fd1f61@syzkaller.appspotmail.com
BUG: unable to handle page fault for address: ffffffffffffffc3
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD bc8f067 P4D bc8f067 PUD bc91067 PMD 0
Oops: 0002 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 25127 Comm: syz-executor.4 Not tainted 6.1.0-rc3-next-20221102-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
RIP: 0010:arch_atomic_fetch_sub arch/x86/include/asm/atomic.h:190 [inline]
RIP: 0010:atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:177 [inline]
RIP: 0010:__refcount_sub_and_test include/linux/refcount.h:272 [inline]
RIP: 0010:__refcount_dec_and_test include/linux/refcount.h:315 [inline]
RIP: 0010:refcount_dec_and_test include/linux/refcount.h:333 [inline]
RIP: 0010:posix_acl_release include/linux/posix_acl.h:57 [inline]
RIP: 0010:posix_acl_release include/linux/posix_acl.h:55 [inline]
RIP: 0010:ovl_set_or_remove_acl fs/overlayfs/inode.c:624 [inline]
RIP: 0010:ovl_set_acl+0x730/0x910 fs/overlayfs/inode.c:685
Code: a3 24 ff 4c 89 ff 49 89 c4 e8 cc 2f 81 fe 4d 85 e4 74 7f e8 52 e9 ac fe be 04 00 00 00 4c 89 e7 bb ff ff ff ff e8 60 7a f9 fe <f0> 41 0f c1 1c 24 bf 01 00 00 00 89 de e8 fe e5 ac fe 83 fb 01 0f
RSP: 0018:ffffc9001264fad8 EFLAGS: 00010246
RAX: 0000000000000001 RBX: 00000000ffffffff RCX: ffffffff82cff810
RDX: fffffbfffffffff9 RSI: 0000000000000004 RDI: ffffffffffffffc3
RBP: ffff88804ebd2bc0 R08: 0000000000000001 R09: ffffffffffffffc6
R10: fffffbfffffffff8 R11: 0000000000000001 R12: ffffffffffffffc3
R13: ffff88804e8985f8 R14: 1ffff920024c9f60 R15: ffff88801f580100
FS: 00007fb9df1ff700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffc3 CR3: 000000004dcf4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
set_posix_acl+0x257/0x320 fs/posix_acl.c:957
vfs_remove_acl+0x272/0x630 fs/posix_acl.c:1209
removexattr+0x12a/0x1b0 fs/xattr.c:894
path_removexattr+0x174/0x1a0 fs/xattr.c:910
__do_sys_removexattr fs/xattr.c:924 [inline]
__se_sys_removexattr fs/xattr.c:921 [inline]
__x64_sys_removexattr+0x55/0x80 fs/xattr.c:921
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fb9dfe8b5a9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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:00007fb9df1ff168 EFLAGS: 00000246 ORIG_RAX: 00000000000000c5
RAX: ffffffffffffffda RBX: 00007fb9dffabf80 RCX: 00007fb9dfe8b5a9
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000020000000
RBP: 00007fb9dfee67b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdbc7f682f R14: 00007fb9df1ff300 R15: 0000000000022000
</TASK>
Modules linked in:
CR2: ffffffffffffffc3
---[ end trace 0000000000000000 ]---
RIP: 0010:arch_atomic_fetch_sub arch/x86/include/asm/atomic.h:190 [inline]
RIP: 0010:atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:177 [inline]
RIP: 0010:__refcount_sub_and_test include/linux/refcount.h:272 [inline]
RIP: 0010:__refcount_dec_and_test include/linux/refcount.h:315 [inline]
RIP: 0010:refcount_dec_and_test include/linux/refcount.h:333 [inline]
RIP: 0010:posix_acl_release include/linux/posix_acl.h:57 [inline]
RIP: 0010:posix_acl_release include/linux/posix_acl.h:55 [inline]
RIP: 0010:ovl_set_or_remove_acl fs/overlayfs/inode.c:624 [inline]
RIP: 0010:ovl_set_acl+0x730/0x910 fs/overlayfs/inode.c:685
Code: a3 24 ff 4c 89 ff 49 89 c4 e8 cc 2f 81 fe 4d 85 e4 74 7f e8 52 e9 ac fe be 04 00 00 00 4c 89 e7 bb ff ff ff ff e8 60 7a f9 fe <f0> 41 0f c1 1c 24 bf 01 00 00 00 89 de e8 fe e5 ac fe 83 fb 01 0f
RSP: 0018:ffffc9001264fad8 EFLAGS: 00010246
RAX: 0000000000000001 RBX: 00000000ffffffff RCX: ffffffff82cff810
RDX: fffffbfffffffff9 RSI: 0000000000000004 RDI: ffffffffffffffc3
RBP: ffff88804ebd2bc0 R08: 0000000000000001 R09: ffffffffffffffc6
R10: fffffbfffffffff8 R11: 0000000000000001 R12: ffffffffffffffc3
R13: ffff88804e8985f8 R14: 1ffff920024c9f60 R15: ffff88801f580100
FS: 00007fb9df1ff700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffc3 CR3: 000000004dcf4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: a3 24 ff 4c 89 ff 49 movabs %eax,0xc48949ff894cff24
7: 89 c4
9: e8 cc 2f 81 fe callq 0xfe812fda
e: 4d 85 e4 test %r12,%r12
11: 74 7f je 0x92
13: e8 52 e9 ac fe callq 0xfeace96a
18: be 04 00 00 00 mov $0x4,%esi
1d: 4c 89 e7 mov %r12,%rdi
20: bb ff ff ff ff mov $0xffffffff,%ebx
25: e8 60 7a f9 fe callq 0xfef97a8a
* 2a: f0 41 0f c1 1c 24 lock xadd %ebx,(%r12) <-- trapping instruction
30: bf 01 00 00 00 mov $0x1,%edi
35: 89 de mov %ebx,%esi
37: e8 fe e5 ac fe callq 0xfeace63a
3c: 83 fb 01 cmp $0x1,%ebx
3f: 0f .byte 0xf
---
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: [syzbot] BUG: unable to handle kernel paging request in ovl_set_acl
2022-11-02 16:35 [syzbot] BUG: unable to handle kernel paging request in ovl_set_acl syzbot
@ 2022-11-03 2:35 ` syzbot
2022-11-03 7:25 ` Christian Brauner
0 siblings, 1 reply; 5+ messages in thread
From: syzbot @ 2022-11-03 2:35 UTC (permalink / raw)
To: linux-kernel, linux-unionfs, miklos, syzkaller-bugs
syzbot has found a reproducer for the following issue on:
HEAD commit: 61c3426aca2c Add linux-next specific files for 20221102
git tree: linux-next
console+strace: https://syzkaller.appspot.com/x/log.txt?x=118e21de880000
kernel config: https://syzkaller.appspot.com/x/.config?x=acb529cc910d907c
dashboard link: https://syzkaller.appspot.com/bug?extid=3f6ef1c4586bb6fd1f61
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1620a689880000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=153fb2a9880000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/cc56d88dd6a3/disk-61c3426a.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/5921b65b080f/vmlinux-61c3426a.xz
kernel image: https://storage.googleapis.com/syzbot-assets/39cbd355fedd/bzImage-61c3426a.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+3f6ef1c4586bb6fd1f61@syzkaller.appspotmail.com
BUG: unable to handle page fault for address: ffffffffffffffc3
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD bc8f067 P4D bc8f067 PUD bc91067 PMD 0
Oops: 0002 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 5240 Comm: syz-executor244 Not tainted 6.1.0-rc3-next-20221102-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
RIP: 0010:arch_atomic_fetch_sub arch/x86/include/asm/atomic.h:190 [inline]
RIP: 0010:atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:177 [inline]
RIP: 0010:__refcount_sub_and_test include/linux/refcount.h:272 [inline]
RIP: 0010:__refcount_dec_and_test include/linux/refcount.h:315 [inline]
RIP: 0010:refcount_dec_and_test include/linux/refcount.h:333 [inline]
RIP: 0010:posix_acl_release include/linux/posix_acl.h:57 [inline]
RIP: 0010:posix_acl_release include/linux/posix_acl.h:55 [inline]
RIP: 0010:ovl_set_or_remove_acl fs/overlayfs/inode.c:624 [inline]
RIP: 0010:ovl_set_acl+0x730/0x910 fs/overlayfs/inode.c:685
Code: a3 24 ff 4c 89 ff 49 89 c4 e8 cc 2f 81 fe 4d 85 e4 74 7f e8 52 e9 ac fe be 04 00 00 00 4c 89 e7 bb ff ff ff ff e8 60 7a f9 fe <f0> 41 0f c1 1c 24 bf 01 00 00 00 89 de e8 fe e5 ac fe 83 fb 01 0f
RSP: 0018:ffffc90003c0fad8 EFLAGS: 00010246
RAX: 0000000000000001 RBX: 00000000ffffffff RCX: ffffffff82cff810
RDX: fffffbfffffffff9 RSI: 0000000000000004 RDI: ffffffffffffffc3
RBP: ffff888078a5ca48 R08: 0000000000000001 R09: ffffffffffffffc6
R10: fffffbfffffffff8 R11: 0000000000000001 R12: ffffffffffffffc3
R13: ffff8880764ba330 R14: 1ffff92000781f60 R15: ffff888024e04f00
FS: 0000555555b7c300(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffc3 CR3: 0000000026941000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
set_posix_acl+0x257/0x320 fs/posix_acl.c:957
vfs_remove_acl+0x272/0x630 fs/posix_acl.c:1209
removexattr+0x12a/0x1b0 fs/xattr.c:894
path_removexattr+0x174/0x1a0 fs/xattr.c:910
__do_sys_removexattr fs/xattr.c:924 [inline]
__se_sys_removexattr fs/xattr.c:921 [inline]
__x64_sys_removexattr+0x55/0x80 fs/xattr.c:921
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f653cc6fbf9
Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffffec22658 EFLAGS: 00000246 ORIG_RAX: 00000000000000c5
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f653cc6fbf9
RDX: 00007f653cc6fbf9 RSI: 0000000020000040 RDI: 0000000020000000
RBP: 00007f653cc33da0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020000280 R11: 0000000000000246 R12: 00007f653cc33e30
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
</TASK>
Modules linked in:
CR2: ffffffffffffffc3
---[ end trace 0000000000000000 ]---
RIP: 0010:arch_atomic_fetch_sub arch/x86/include/asm/atomic.h:190 [inline]
RIP: 0010:atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:177 [inline]
RIP: 0010:__refcount_sub_and_test include/linux/refcount.h:272 [inline]
RIP: 0010:__refcount_dec_and_test include/linux/refcount.h:315 [inline]
RIP: 0010:refcount_dec_and_test include/linux/refcount.h:333 [inline]
RIP: 0010:posix_acl_release include/linux/posix_acl.h:57 [inline]
RIP: 0010:posix_acl_release include/linux/posix_acl.h:55 [inline]
RIP: 0010:ovl_set_or_remove_acl fs/overlayfs/inode.c:624 [inline]
RIP: 0010:ovl_set_acl+0x730/0x910 fs/overlayfs/inode.c:685
Code: a3 24 ff 4c 89 ff 49 89 c4 e8 cc 2f 81 fe 4d 85 e4 74 7f e8 52 e9 ac fe be 04 00 00 00 4c 89 e7 bb ff ff ff ff e8 60 7a f9 fe <f0> 41 0f c1 1c 24 bf 01 00 00 00 89 de e8 fe e5 ac fe 83 fb 01 0f
RSP: 0018:ffffc90003c0fad8 EFLAGS: 00010246
RAX: 0000000000000001 RBX: 00000000ffffffff RCX: ffffffff82cff810
RDX: fffffbfffffffff9 RSI: 0000000000000004 RDI: ffffffffffffffc3
RBP: ffff888078a5ca48 R08: 0000000000000001 R09: ffffffffffffffc6
R10: fffffbfffffffff8 R11: 0000000000000001 R12: ffffffffffffffc3
R13: ffff8880764ba330 R14: 1ffff92000781f60 R15: ffff888024e04f00
FS: 0000555555b7c300(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffc3 CR3: 0000000026941000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: a3 24 ff 4c 89 ff 49 movabs %eax,0xc48949ff894cff24
7: 89 c4
9: e8 cc 2f 81 fe callq 0xfe812fda
e: 4d 85 e4 test %r12,%r12
11: 74 7f je 0x92
13: e8 52 e9 ac fe callq 0xfeace96a
18: be 04 00 00 00 mov $0x4,%esi
1d: 4c 89 e7 mov %r12,%rdi
20: bb ff ff ff ff mov $0xffffffff,%ebx
25: e8 60 7a f9 fe callq 0xfef97a8a
* 2a: f0 41 0f c1 1c 24 lock xadd %ebx,(%r12) <-- trapping instruction
30: bf 01 00 00 00 mov $0x1,%edi
35: 89 de mov %ebx,%esi
37: e8 fe e5 ac fe callq 0xfeace63a
3c: 83 fb 01 cmp $0x1,%ebx
3f: 0f .byte 0xf
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [syzbot] BUG: unable to handle kernel paging request in ovl_set_acl
2022-11-03 2:35 ` syzbot
@ 2022-11-03 7:25 ` Christian Brauner
2022-11-03 11:40 ` syzbot
0 siblings, 1 reply; 5+ messages in thread
From: Christian Brauner @ 2022-11-03 7:25 UTC (permalink / raw)
To: syzbot; +Cc: linux-kernel, linux-unionfs, miklos, syzkaller-bugs
On Wed, Nov 02, 2022 at 07:35:42PM -0700, syzbot wrote:
> syzbot has found a reproducer for the following issue on:
>
> HEAD commit: 61c3426aca2c Add linux-next specific files for 20221102
> git tree: linux-next
> console+strace: https://syzkaller.appspot.com/x/log.txt?x=118e21de880000
> kernel config: https://syzkaller.appspot.com/x/.config?x=acb529cc910d907c
> dashboard link: https://syzkaller.appspot.com/bug?extid=3f6ef1c4586bb6fd1f61
> compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1620a689880000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=153fb2a9880000
>
> Downloadable assets:
> disk image: https://storage.googleapis.com/syzbot-assets/cc56d88dd6a3/disk-61c3426a.raw.xz
> vmlinux: https://storage.googleapis.com/syzbot-assets/5921b65b080f/vmlinux-61c3426a.xz
> kernel image: https://storage.googleapis.com/syzbot-assets/39cbd355fedd/bzImage-61c3426a.xz
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+3f6ef1c4586bb6fd1f61@syzkaller.appspotmail.com
#syz test: https://git.kernel.org/pub/scm/linux/kernel/git/vfs/idmapping.git/ 5b52aebef8954cadff29918bb61d7fdc7be07837
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [syzbot] BUG: unable to handle kernel paging request in ovl_set_acl
2022-11-03 7:25 ` Christian Brauner
@ 2022-11-03 11:40 ` syzbot
2022-11-03 14:23 ` Christian Brauner
0 siblings, 1 reply; 5+ messages in thread
From: syzbot @ 2022-11-03 11:40 UTC (permalink / raw)
To: brauner, linux-kernel, linux-unionfs, miklos, syzkaller-bugs
Hello,
syzbot tried to test the proposed patch but the build/boot failed:
ut Driver Registering...
[ 7.160509][ T1] Key type cifs.spnego registered
[ 7.161598][ T1] Key type cifs.idmap registered
[ 7.162926][ T1] ntfs: driver 2.1.32 [Flags: R/W].
[ 7.165563][ T1] ntfs3: Max link count 4000
[ 7.167071][ T1] ntfs3: Enabled Linux POSIX ACLs support
[ 7.167935][ T1] ntfs3: Read-only LZX/Xpress compression included
[ 7.170325][ T1] efs: 1.0a - http://aeschi.ch.eu.org/efs/
[ 7.171768][ T1] jffs2: version 2.2. (NAND) (SUMMARY) © 2001-2006 Red Hat, Inc.
[ 7.177918][ T1] romfs: ROMFS MTD (C) 2007 Red Hat, Inc.
[ 7.179712][ T1] QNX4 filesystem 0.2.3 registered.
[ 7.180796][ T1] qnx6: QNX6 filesystem 1.0.0 registered.
[ 7.182825][ T1] fuse: init (API version 7.37)
[ 7.188322][ T1] orangefs_debugfs_init: called with debug mask: :none: :0:
[ 7.190047][ T1] orangefs_init: module version upstream loaded
[ 7.192129][ T1] JFS: nTxBlock = 8192, nTxLock = 65536
[ 7.210458][ T1] SGI XFS with ACLs, security attributes, realtime, quota, fatal assert, debug enabled
[ 7.225322][ T1] 9p: Installing v9fs 9p2000 file system support
[ 7.228885][ T1] NILFS version 2 loaded
[ 7.230107][ T1] befs: version: 0.9.3
[ 7.232727][ T1] ocfs2: Registered cluster interface o2cb
[ 7.235500][ T1] ocfs2: Registered cluster interface user
[ 7.237529][ T1] OCFS2 User DLM kernel interface loaded
[ 7.250453][ T1] gfs2: GFS2 installed
[ 7.264209][ T1] ceph: loaded (mds proto 32)
[ 7.278952][ T1] NET: Registered PF_ALG protocol family
[ 7.280354][ T1] xor: automatically using best checksumming function avx
[ 7.281560][ T1] async_tx: api initialized (async)
[ 7.282618][ T1] Key type asymmetric registered
[ 7.283598][ T1] Asymmetric key parser 'x509' registered
[ 7.284695][ T1] Asymmetric key parser 'pkcs8' registered
[ 7.285759][ T1] Key type pkcs7_test registered
[ 7.290183][ T1] alg: self-tests for CTR-KDF (hmac(sha256)) passed
[ 7.291911][ T1] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 240)
[ 7.294225][ T1] io scheduler mq-deadline registered
[ 7.295495][ T1] io scheduler kyber registered
[ 7.297344][ T1] io scheduler bfq registered
[ 7.309105][ T1] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0
[ 7.346741][ T1] ACPI: button: Power Button [PWRF]
[ 7.349041][ T1] input: Sleep Button as /devices/LNXSYSTM:00/LNXSLPBN:00/input/input1
[ 7.351595][ T1] ACPI: button: Sleep Button [SLPF]
[ 7.377641][ T1] ACPI: \_SB_.LNKC: Enabled at IRQ 11
[ 7.378625][ T1] virtio-pci 0000:00:03.0: virtio_pci: leaving for legacy driver
[ 7.396163][ T1] ACPI: \_SB_.LNKD: Enabled at IRQ 10
[ 7.397343][ T1] virtio-pci 0000:00:04.0: virtio_pci: leaving for legacy driver
[ 7.417084][ T1] ACPI: \_SB_.LNKB: Enabled at IRQ 10
[ 7.418128][ T1] virtio-pci 0000:00:06.0: virtio_pci: leaving for legacy driver
[ 7.431573][ T1] virtio-pci 0000:00:07.0: virtio_pci: leaving for legacy driver
[ 7.467042][ T220] kworker/u4:1 (220) used greatest stack depth: 27056 bytes left
[ 7.472746][ T221] kworker/u4:1 (221) used greatest stack depth: 26960 bytes left
[ 7.880988][ T1] N_HDLC line discipline registered with maxframe=4096
[ 7.882545][ T1] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[ 7.884539][ T1] 00:03: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A
[ 7.893541][ T1] 00:04: ttyS1 at I/O 0x2f8 (irq = 3, base_baud = 115200) is a 16550A
[ 7.903006][ T1] 00:05: ttyS2 at I/O 0x3e8 (irq = 6, base_baud = 115200) is a 16550A
[ 7.910260][ T1] 00:06: ttyS3 at I/O 0x2e8 (irq = 7, base_baud = 115200) is a 16550A
[ 7.930315][ T1] Non-volatile memory driver v1.3
[ 7.944423][ T1] Linux agpgart interface v0.103
[ 7.947331][ T1] ACPI: bus type drm_connector registered
[ 7.954182][ T1] [drm] Initialized vgem 1.0.0 20120112 for vgem on minor 0
[ 7.964299][ T1] [drm] Initialized vkms 1.0.0 20180514 for vkms on minor 1
[ 8.028476][ T1] Console: switching to colour frame buffer device 128x48
[ 8.046434][ T1] platform vkms: [drm] fb0: vkmsdrmfb frame buffer device
[ 8.047778][ T1] usbcore: registered new interface driver udl
[ 8.112535][ T1] brd: module loaded
[ 8.178418][ T1] loop: module loaded
[ 8.269685][ T1] zram: Added device: zram0
[ 8.277914][ T1] null_blk: disk nullb0 created
[ 8.279227][ T1] null_blk: module loaded
[ 8.280291][ T1] Guest personality initialized and is inactive
[ 8.282253][ T1] VMCI host device registered (name=vmci, major=10, minor=119)
[ 8.283868][ T1] Initialized host personality
[ 8.285398][ T1] usbcore: registered new interface driver rtsx_usb
[ 8.288036][ T1] usbcore: registered new interface driver viperboard
[ 8.290550][ T1] usbcore: registered new interface driver dln2
[ 8.292673][ T1] usbcore: registered new interface driver pn533_usb
[ 8.299242][ T1] nfcsim 0.2 initialized
[ 8.300323][ T1] usbcore: registered new interface driver port100
[ 8.301868][ T1] usbcore: registered new interface driver nfcmrvl
[ 8.308006][ T1] Loading iSCSI transport class v2.0-870.
[ 8.345112][ T1] scsi host0: Virtio SCSI HBA
[ 8.389808][ T1] st: Version 20160209, fixed bufsize 32768, s/g segs 256
[ 8.394047][ T11] scsi 0:0:1:0: Direct-Access Google PersistentDisk 1 PQ: 0 ANSI: 6
[ 8.427169][ T1] Rounding down aligned max_sectors from 4294967295 to 4294967288
[ 8.430280][ T1] db_root: cannot open: /etc/target
[ 8.432877][ T1] slram: not enough parameters.
[ 8.441807][ T1] ftl_cs: FTL header not found.
[ 8.500648][ T1] wireguard: WireGuard 1.0.0 loaded. See www.wireguard.com for information.
[ 8.502726][ T1] wireguard: Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
[ 8.505442][ T1] eql: Equalizer2002: Simon Janes (simon@ncm.com) and David S. Miller (davem@redhat.com)
[ 8.516453][ T1] MACsec IEEE 802.1AE
[ 8.525424][ T1] tun: Universal TUN/TAP device driver, 1.6
[ 8.571093][ T1] ------------[ cut here ]------------
[ 8.572622][ T1] WARNING: CPU: 0 PID: 1 at include/linux/cpumask.h:110 __netif_set_xps_queue+0x88e/0x1f30
[ 8.574863][ T1] Modules linked in:
[ 8.575981][ T1] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.1.0-rc1-syzkaller-00034-g5b52aebef895 #0
[ 8.578509][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
[ 8.581053][ T1] RIP: 0010:__netif_set_xps_queue+0x88e/0x1f30
[ 8.582714][ T1] Code: fa 48 c7 c2 a0 a8 f4 8a be 2e 0a 00 00 48 c7 c7 40 a7 f4 8a c6 05 c2 40 74 06 01 e8 52 ca f1 01 e9 ef fd ff ff e8 d2 81 24 fa <0f> 0b e9 8e fa ff ff 8b 6c 24 38 e8 c2 81 24 fa 49 8d 7c 24 04 48
[ 8.587669][ T1] RSP: 0000:ffffc90000067898 EFLAGS: 00010293
[ 8.589339][ T1] RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000000000000
[ 8.591592][ T1] RDX: ffff88813fe50000 RSI: ffffffff875805ae RDI: 0000000000000004
[ 8.593717][ T1] RBP: 0000000000000002 R08: 0000000000000004 R09: 0000000000000002
[ 8.595628][ T1] R10: 0000000000000002 R11: 000000000008c07e R12: ffff88801ce1c280
[ 8.597437][ T1] R13: 0000000000000003 R14: ffff88801ce1c298 R15: 0000000000000002
[ 8.599572][ T1] FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
[ 8.601992][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8.603566][ T1] CR2: ffff88823ffff000 CR3: 000000000bc8e000 CR4: 00000000003506f0
[ 8.605629][ T1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8.607162][ T1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8.608617][ T1] Call Trace:
[ 8.609378][ T1] <TASK>
[ 8.610085][ T1] ? vp_bus_name+0xc0/0xc0
[ 8.611086][ T1] virtnet_set_affinity+0x4f0/0x750
[ 8.612333][ T1] ? skb_recv_done+0x120/0x120
[ 8.613675][ T1] virtnet_probe+0x12ae/0x31e0
[ 8.614678][ T1] ? virtnet_find_vqs+0xc30/0xc30
[ 8.615861][ T1] virtio_dev_probe+0x577/0x870
[ 8.617108][ T1] ? virtio_features_ok+0x1e0/0x1e0
[ 8.618369][ T1] really_probe+0x249/0xb90
[ 8.619549][ T1] __driver_probe_device+0x1df/0x4d0
[ 8.621025][ T1] driver_probe_device+0x4c/0x1a0
[ 8.622503][ T1] __driver_attach+0x1d0/0x550
[ 8.623795][ T1] ? __device_attach_driver+0x2e0/0x2e0
[ 8.625384][ T1] bus_for_each_dev+0x147/0x1d0
[ 8.626734][ T1] ? subsys_dev_iter_exit+0x20/0x20
[ 8.628079][ T1] bus_add_driver+0x4c9/0x640
[ 8.629430][ T1] driver_register+0x220/0x3a0
[ 8.630693][ T1] ? veth_init+0x11/0x11
[ 8.631946][ T1] virtio_net_driver_init+0x93/0xd2
[ 8.633254][ T1] do_one_initcall+0x13d/0x780
[ 8.634741][ T1] ? trace_event_raw_event_initcall_level+0x1f0/0x1f0
[ 8.636673][ T1] ? parameq+0x140/0x170
[ 8.637876][ T1] kernel_init_freeable+0x6ff/0x788
[ 8.639145][ T1] ? rest_init+0x270/0x270
[ 8.640483][ T1] kernel_init+0x1a/0x1d0
[ 8.641440][ T1] ? rest_init+0x270/0x270
[ 8.642564][ T1] ret_from_fork+0x1f/0x30
[ 8.643863][ T1] </TASK>
[ 8.644754][ T1] Kernel panic - not syncing: panic_on_warn set ...
[ 8.646087][ T1] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.1.0-rc1-syzkaller-00034-g5b52aebef895 #0
[ 8.646528][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
[ 8.646528][ T1] Call Trace:
[ 8.646528][ T1] <TASK>
[ 8.646528][ T1] dump_stack_lvl+0xcd/0x134
[ 8.646528][ T1] panic+0x2c8/0x622
[ 8.646528][ T1] ? panic_print_sys_info.part.0+0x110/0x110
[ 8.646528][ T1] ? __warn.cold+0x24b/0x350
[ 8.646528][ T1] ? __netif_set_xps_queue+0x88e/0x1f30
[ 8.646528][ T1] __warn.cold+0x25c/0x350
[ 8.646528][ T1] ? __netif_set_xps_queue+0x88e/0x1f30
[ 8.646528][ T1] report_bug+0x1bc/0x210
[ 8.646528][ T1] handle_bug+0x3c/0x70
[ 8.646528][ T1] exc_invalid_op+0x14/0x40
[ 8.646528][ T1] asm_exc_invalid_op+0x16/0x20
[ 8.646528][ T1] RIP: 0010:__netif_set_xps_queue+0x88e/0x1f30
[ 8.646528][ T1] Code: fa 48 c7 c2 a0 a8 f4 8a be 2e 0a 00 00 48 c7 c7 40 a7 f4 8a c6 05 c2 40 74 06 01 e8 52 ca f1 01 e9 ef fd ff ff e8 d2 81 24 fa <0f> 0b e9 8e fa ff ff 8b 6c 24 38 e8 c2 81 24 fa 49 8d 7c 24 04 48
[ 8.646528][ T1] RSP: 0000:ffffc90000067898 EFLAGS: 00010293
[ 8.646528][ T1] RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000000000000
[ 8.646528][ T1] RDX: ffff88813fe50000 RSI: ffffffff875805ae RDI: 0000000000000004
[ 8.646528][ T1] RBP: 0000000000000002 R08: 0000000000000004 R09: 0000000000000002
[ 8.646528][ T1] R10: 0000000000000002 R11: 000000000008c07e R12: ffff88801ce1c280
[ 8.646528][ T1] R13: 0000000000000003 R14: ffff88801ce1c298 R15: 0000000000000002
[ 8.646528][ T1] ? __netif_set_xps_queue+0x88e/0x1f30
[ 8.646528][ T1] ? __netif_set_xps_queue+0x88e/0x1f30
[ 8.646528][ T1] ? vp_bus_name+0xc0/0xc0
[ 8.646528][ T1] virtnet_set_affinity+0x4f0/0x750
[ 8.646528][ T1] ? skb_recv_done+0x120/0x120
[ 8.646528][ T1] virtnet_probe+0x12ae/0x31e0
[ 8.646528][ T1] ? virtnet_find_vqs+0xc30/0xc30
[ 8.646528][ T1] virtio_dev_probe+0x577/0x870
[ 8.646528][ T1] ? virtio_features_ok+0x1e0/0x1e0
[ 8.646528][ T1] really_probe+0x249/0xb90
[ 8.694969][ T1] __driver_probe_device+0x1df/0x4d0
[ 8.694969][ T1] driver_probe_device+0x4c/0x1a0
[ 8.694969][ T1] __driver_attach+0x1d0/0x550
[ 8.694969][ T1] ? __device_attach_driver+0x2e0/0x2e0
[ 8.699777][ T1090] sd 0:0:1:0: [sda] 4194304 512-byte logical blocks: (2.15 GB/2.00 GiB)
[ 8.699831][ T1090] sd 0:0:1:0: [sda] 4096-byte physical blocks
[ 8.699980][ T1090] sd 0:0:1:0: [sda] Write Protect is off
[ 8.700013][ T1090] sd 0:0:1:0: [sda] Mode Sense: 1f 00 00 08
[ 8.700333][ T1090] sd 0:0:1:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 8.703866][ T1] bus_for_each_dev+0x147/0x1d0
[ 8.703866][ T1] ? subsys_dev_iter_exit+0x20/0x20
[ 8.711881][ T11] sd 0:0:1:0: Attached scsi generic sg0 type 0
[ 8.711687][ T1] bus_add_driver+0x4c9/0x640
[ 8.711687][ T1] driver_register+0x220/0x3a0
[ 8.715821][ T1] ? veth_init+0x11/0x11
[ 8.715821][ T1] virtio_net_driver_init+0x93/0xd2
[ 8.715821][ T1] do_one_initcall+0x13d/0x780
[ 8.715821][ T1] ? trace_event_raw_event_initcall_level+0x1f0/0x1f0
[ 8.715821][ T1] ? parameq+0x140/0x170
[ 8.715821][ T1] kernel_init_freeable+0x6ff/0x788
[ 8.715821][ T1] ? rest_init+0x270/0x270
[ 8.715821][ T1] kernel_init+0x1a/0x1d0
[ 8.715821][ T1] ? rest_init+0x270/0x270
[ 8.715821][ T1] ret_from_fork+0x1f/0x30
[ 8.715821][ T1] </TASK>
[ 8.715821][ T1] Kernel Offset: disabled
[ 8.715821][ T1] Rebooting in 86400 seconds..
syzkaller build log:
go env (err=<nil>)
GO111MODULE="auto"
GOARCH="amd64"
GOBIN=""
GOCACHE="/syzkaller/.cache/go-build"
GOENV="/syzkaller/.config/go/env"
GOEXE=""
GOEXPERIMENT=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOINSECURE=""
GOMODCACHE="/syzkaller/jobs/linux/gopath/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="linux"
GOPATH="/syzkaller/jobs/linux/gopath"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/usr/local/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64"
GOVCS=""
GOVERSION="go1.17"
GCCGO="gccgo"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD="/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/go.mod"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build1866141968=/tmp/go-build -gno-record-gcc-switches"
git status (err=<nil>)
HEAD detached at 08977f5d5
nothing to commit, working tree clean
tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
Makefile:32: run command via tools/syz-env for best compatibility, see:
Makefile:33: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env
go list -f '{{.Stale}}' ./sys/syz-sysgen | grep -q false || go install ./sys/syz-sysgen
make .descriptions
tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
bin/syz-sysgen
touch .descriptions
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=08977f5d5e344fa0ac0b80af0b72fc3f1468d6a5 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20221101-102309'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-fuzzer github.com/google/syzkaller/syz-fuzzer
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=08977f5d5e344fa0ac0b80af0b72fc3f1468d6a5 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20221101-102309'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=08977f5d5e344fa0ac0b80af0b72fc3f1468d6a5 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20221101-102309'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-stress github.com/google/syzkaller/tools/syz-stress
mkdir -p ./bin/linux_amd64
gcc -o ./bin/linux_amd64/syz-executor executor/executor.cc \
-m64 -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-stringop-overflow -Wno-array-bounds -Wno-format-overflow -static-pie -fpermissive -w -DGOOS_linux=1 -DGOARCH_amd64=1 \
-DHOSTGOOS_linux=1 -DGIT_REVISION=\"08977f5d5e344fa0ac0b80af0b72fc3f1468d6a5\"
Error text is too large and was truncated, full error text is at:
https://syzkaller.appspot.com/x/error.txt?x=14d2420a880000
Tested on:
commit: 5b52aebe ovl: call posix_acl_release() after error che..
git tree: https://git.kernel.org/pub/scm/linux/kernel/git/vfs/idmapping.git/
kernel config: https://syzkaller.appspot.com/x/.config?x=551658738d0ad6d
dashboard link: https://syzkaller.appspot.com/bug?extid=3f6ef1c4586bb6fd1f61
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
Note: no patches were applied.
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [syzbot] BUG: unable to handle kernel paging request in ovl_set_acl
2022-11-03 11:40 ` syzbot
@ 2022-11-03 14:23 ` Christian Brauner
0 siblings, 0 replies; 5+ messages in thread
From: Christian Brauner @ 2022-11-03 14:23 UTC (permalink / raw)
To: syzbot; +Cc: linux-kernel, linux-unionfs, miklos, syzkaller-bugs
On Thu, Nov 03, 2022 at 04:40:22AM -0700, syzbot wrote:
> Hello,
>
> syzbot tried to test the proposed patch but the build/boot failed:
Unrelated failure. I've reproduced the issue manually and verified that
the patch I wanted to test fixes it. Patch is in the relevant branch an
in for-next:
https://git.kernel.org/pub/scm/linux/kernel/git/vfs/idmapping.git/commit/?h=fs.acl.rework&id=5b52aebef8954cadff29918bb61d7fdc7be07837
This is only relevant for the next mw so nothing in ovl in mainline.
Fwiw, this is the fix:
From 5b52aebef8954cadff29918bb61d7fdc7be07837 Mon Sep 17 00:00:00 2001
From: Christian Brauner <brauner@kernel.org>
Date: Thu, 3 Nov 2022 08:18:46 +0100
Subject: [PATCH] ovl: call posix_acl_release() after error checking
The current placement of posix_acl_release() in ovl_set_or_remove_acl()
means it can be called on an error pointer instead of actual acls.
Fix this by moving the posix_acl_release() call after the error handling.
Fixes: 0e641857322f ("ovl: implement set acl method") # mainline only
Reported-by: syzbot+3f6ef1c4586bb6fd1f61@syzkaller.appspotmail.com
Signed-off-by: Christian Brauner (Microsoft) <brauner@kernel.org>
---
fs/overlayfs/inode.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c
index 77a77fd7a77b..ee6dfa577c93 100644
--- a/fs/overlayfs/inode.c
+++ b/fs/overlayfs/inode.c
@@ -621,11 +621,11 @@ static int ovl_set_or_remove_acl(struct dentry *dentry, struct inode *inode,
real_acl = vfs_get_acl(mnt_user_ns(realpath.mnt), realdentry,
acl_name);
revert_creds(old_cred);
- posix_acl_release(real_acl);
if (IS_ERR(real_acl)) {
err = PTR_ERR(real_acl);
goto out_drop_write;
}
+ posix_acl_release(real_acl);
}
if (!upperdentry) {
--
2.34.1
^ permalink raw reply related [flat|nested] 5+ messages in thread
end of thread, other threads:[~2022-11-03 14:23 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-11-02 16:35 [syzbot] BUG: unable to handle kernel paging request in ovl_set_acl syzbot
2022-11-03 2:35 ` syzbot
2022-11-03 7:25 ` Christian Brauner
2022-11-03 11:40 ` syzbot
2022-11-03 14:23 ` Christian Brauner
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.