* aufs crash at au_set_fbstart in aufs3 (3.4 kernel).
@ 2018-07-16 21:29 Prasad Koya
2018-07-16 21:30 ` Prasad Koya
2018-07-17 2:11 ` Matthew Wilcox
0 siblings, 2 replies; 5+ messages in thread
From: Prasad Koya @ 2018-07-16 21:29 UTC (permalink / raw)
To: linux-fsdevel; +Cc: Junjiro Okajima
Hi
Has anyone run into this crash with aufs 3? We hit this in production.
Thank you.
<1>[45257161.254682] BUG: unable to handle kernel NULL pointer
dereference at 0000000000000038
<1>[45257161.351193] IP: [<ffffffff8117a5dc>] au_do_open_nondir+0x3b/0xaf
<4>[45257161.425916] PGD 80ffb067 PUD 2d20b067 PMD 0
<4>[45257161.425923] Oops: 0002 [#1] PREEMPT SMP
<4>[45257161.425930] CPU 1
<4>[45257161.425932] Modules linked in: arptable_filter arp_tables
dummy ipt_ULOG nf_conntrack_ipv6 nf_defrag_ipv6 ip6t_REJECT
ip6table_mangle
nf_conntrack_ipv4 nf_defrag_ipv4 xt_LOG xt_limit xt_hl xt_state
ipt_REJECT xt_multiport xt_tcpudp iptable_mangle msr sch_prio
kbfd(O) 8021q garp stp llc tun nf_conntrack_tftp iptable_raw
iptable_filter ip_tables xt_NOTRACK nf_conntrack xt_mark ip6table_raw
ip6table_filter ip6_tables x_tables scd(O) amd64_edac_mod k10temp
hwmon microcode kvm_amd kvm
<4>[45257161.425985]
<4>[45257161.425990] Pid: 29253, comm: sandy2 Tainted: P O
3.4.43.Ar-3379181.4167M #1
<4>[45257161.425996] RIP: 0010:[<ffffffff8117a5dc>]
[<ffffffff8117a5dc>] au_do_open_nondir+0x3b/0xaf
<4>[45257161.426004] RSP: 0018:ffff8800388b9c28 EFLAGS: 00210287
<4>[45257161.426007] RAX: 0000000000000000 RBX: ffff8800576263c0 RCX:
0000000000000001
<4>[45257161.426011] RDX: ffff8800576263c0 RSI: 0000000000000000 RDI:
ffff8800576263c0
<4>[45257161.426015] RBP: ffff8800388b9c48 R08: 0000000000000000 R09:
0000000000000000
<4>[45257161.426019] R10: ffff880104d1e500 R11: fefefefefefefeff R12:
0000000000000000
<4>[45257161.426022] R13: ffffffff8117a500 R14: ffff8800576263e8 R15:
0000000000080000
<4>[45257161.426027] FS: 0000000000000000(0000)
GS:ffff88013fb00000(0063) knlGS:00000000f73df8e0
<4>[45257161.426031] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033
<4>[45257161.426034] CR2: 0000000000000038 CR3: 000000003ee9c000 CR4:
00000000000007e0
<4>[45257161.426038] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
<4>[45257161.426041] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
0000000000000400
<4>[45257161.426046] Process sandy2 (pid: 29253, threadinfo
ffff8800388b8000, task ffff88003d9d5930)
<4>[45257161.426049] Stack:
<4>[45257161.426052] ffff8800388b9c48 ffff8800576263c0
ffff880072891df8 ffffffff8117a5a1
<4>[45257161.426059] ffff8800388b9c98 ffffffff811789cd
ffff8800388b9c78 ffffffff813eb090
<4>[45257161.426065] ffff88013f180000 ffff88013f180000
ffff8800576263c0 ffff8800576263c0
<4>[45257161.426072] Call Trace:
<4>[45257161.426077] [<ffffffff8117a5a1>] ? au_do_open_nondir+0x0/0xaf
<4>[45257161.426081] [<ffffffff811789cd>] au_do_open+0x57/0xaa
<4>[45257161.426088] [<ffffffff813eb090>] ? sub_preempt_count+0x92/0xa5
<4>[45257161.426093] [<ffffffff81179c5b>] ? aufs_open_nondir+0x0/0x80
<4>[45257161.426097] [<ffffffff81179c8e>] aufs_open_nondir+0x33/0x80
<4>[45257161.426103] [<ffffffff810a7945>] __dentry_open+0x158/0x275
<4>[45257161.426107] [<ffffffff810a7b1f>] nameidata_to_filp+0x5b/0x62
<4>[45257161.426113] [<ffffffff810b5854>] do_last+0x539/0x642
<4>[45257161.426118] [<ffffffff810b5a28>] path_openat+0xcb/0x361
<4>[45257161.426123] [<ffffffff810b5dad>] do_filp_open+0x38/0x84
<4>[45257161.426129] [<ffffffff813eb090>] ? sub_preempt_count+0x92/0xa5
<4>[45257161.426134] [<ffffffff813e8310>] ? _raw_spin_unlock+0x13/0x2e
<4>[45257161.426139] [<ffffffff810bfb9c>] ? alloc_fd+0xfb/0x10d
<4>[45257161.426144] [<ffffffff810a75f0>] do_sys_open+0x116/0x1af
<4>[45257161.426150] [<ffffffff810e4320>] compat_sys_open+0x16/0x18
<4>[45257161.426155] [<ffffffff813ee28b>] cstar_dispatch+0x7/0x1e
<4>[45257161.426158] Code: ec 08 4c 8b 47 18 4d 3b 40 18 49 8b 40 30
74 07 49 83 78 10 00 74 29 48 85 c0 75 31 eb 22 48 8b 83 c0 00 00 00
44 89 e6 48 89 df
<44> 88 68 38 e8 b0 e1 ff ff 48 89 df e8 b7 df ff ff 31 c0 eb 05
<1>[45257161.426218] RIP [<ffffffff8117a5dc>] au_do_open_nondir+0x3b/0xaf
<4>[45257161.501970] RSP <ffff8800388b9c28>
<0>[45257161.501974] Kernel version: 3.4.43 #1 SMP PREEMPT Fri Jul 22
13:33:33 PDT 2016
<4>[45257161.608848] CR2: 0000000000000038
<4>[45257161.425996] RIP: 0010:[<ffffffff8117a5dc>]
[<ffffffff8117a5dc>] au_do_open_nondir+0x3b/0xaf
28 int au_do_open_nondir(struct file *file, int flags)
29 {
30 int err;
31 aufs_bindex_t bindex;
32 struct file *h_file;
33 struct dentry *dentry;
34 struct au_finfo *finfo;
35
36 FiMustWriteLock(file);
37
38 dentry = file->f_dentry;
39 err = au_d_alive(dentry);
40 if (unlikely(err))
41 goto out;
42
43 finfo = au_fi(file);
44 memset(&finfo->fi_htop, 0, sizeof(finfo->fi_htop));
45 atomic_set(&finfo->fi_mmapped, 0);
46 bindex = au_dbstart(dentry);
47 h_file = au_h_open(dentry, bindex, flags, file);
48 if (IS_ERR(h_file))
49 err = PTR_ERR(h_file);
50 else {
51 au_set_fbstart(file, bindex); <========
crash in this macro
52 au_set_h_fptr(file, bindex, h_file);
53 au_update_figen(file);
54 /* todo: necessary? */
55 /* file->f_ra = h_file->f_ra; */
56 }
185 static inline void au_set_fbstart(struct file *file, aufs_bindex_t
bindex)
186 {
187 FiMustWriteLock(file);
188 au_fi(file)->fi_btop = bindex;
189 }
190
145 static inline struct au_finfo *au_fi(struct file *file)
146 {
147 return file->private_data;
148 }
struct inode *inode = d->d_inode;
err = 0;
if (unlikely(d_unhashed(d) || !inode || !inode->i_nlink))
ffffffff8117a5c1: 49 83 78 10 00 cmpq $0x0,0x10(%r8)
ffffffff8117a5c6: 74 29 je
ffffffff8117a5f1 <au_do_open_nondir+0x50>
err = 0;
if (!IS_ROOT(d))
err = au_d_hashed_positive(d);
else {
inode = d->d_inode;
if (unlikely(d_unlinked(d) || !inode ||
!inode->i_nlink))
ffffffff8117a5c8: 48 85 c0 test %rax,%rax
ffffffff8117a5cb: 75 31 jne
ffffffff8117a5fe <au_do_open_nondir+0x5d>
ffffffff8117a5cd: eb 22 jmp
ffffffff8117a5f1 <au_do_open_nondir+0x50>
}
static inline void au_set_fbstart(struct file *file, aufs_bindex_t
bindex)
{
FiMustWriteLock(file);
au_fi(file)->fi_btop = bindex;
ffffffff8117a5cf: 48 8b 83 c0 00 00 00 mov 0xc0(%rbx),%rax
h_file = au_h_open(dentry, bindex, flags, file);
if (IS_ERR(h_file))
err = PTR_ERR(h_file);
else {
au_set_fbstart(file, bindex);
au_set_h_fptr(file, bindex, h_file);
ffffffff8117a5d6: 44 89 e6 mov %r12d,%esi
ffffffff8117a5d9: 48 89 df mov %rbx,%rdi
ffffffff8117a5dc: 44 88 68 38 mov
%r13b,0x38(%rax) <============ crash point
ffffffff8117a5e0: e8 b0 e1 ff ff callq
ffffffff81178795 <au_set_h_fptr>
au_update_figen(file);
ffffffff8117a5e5: 48 89 df mov %rbx,%rdi
ffffffff8117a5e8: e8 b7 df ff ff callq
ffffffff811785a4 <au_update_figen>
ffffffff8117a5ed: 31 c0 xor %eax,%eax
ffffffff8117a5ef: eb 05 jmp
ffffffff8117a5f6 <au_do_open_nondir+0x55>
ffffffff8117a5f1: b8 fe ff ff ff mov
$0xfffffffe,%eax
/* file->f_ra = h_file->f_ra; */
}
Reading symbols from /tmp/vmlinux...done.
(gdb) list *(au_do_open_nondir+0x3b)
0xffffffff8117a5dc is in au_do_open_nondir
(/bld/kernel/rpmbuild/linux-3.4/fs/aufs/file.h:188).
warning: Source file is more recent than executable.
183 }
184
185 static inline void au_set_fbstart(struct file *file,
aufs_bindex_t bindex)
186 {
187 FiMustWriteLock(file);
188 au_fi(file)->fi_btop = bindex;
189 }
190
191 static inline void au_set_fbend_dir(struct file *file,
aufs_bindex_t bindex)
192 {
(gdb)
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: aufs crash at au_set_fbstart in aufs3 (3.4 kernel).
2018-07-16 21:29 aufs crash at au_set_fbstart in aufs3 (3.4 kernel) Prasad Koya
@ 2018-07-16 21:30 ` Prasad Koya
2018-07-17 14:29 ` J. R. Okajima
2018-07-17 2:11 ` Matthew Wilcox
1 sibling, 1 reply; 5+ messages in thread
From: Prasad Koya @ 2018-07-16 21:30 UTC (permalink / raw)
To: linux-fsdevel; +Cc: Junjiro Okajima, aufs-users
CC aufs-users.
On Mon, Jul 16, 2018 at 2:29 PM Prasad Koya <prasad.koya@gmail.com> wrote:
>
> Hi
>
> Has anyone run into this crash with aufs 3? We hit this in production.
>
> Thank you.
>
> <1>[45257161.254682] BUG: unable to handle kernel NULL pointer
> dereference at 0000000000000038
> <1>[45257161.351193] IP: [<ffffffff8117a5dc>] au_do_open_nondir+0x3b/0xaf
> <4>[45257161.425916] PGD 80ffb067 PUD 2d20b067 PMD 0
> <4>[45257161.425923] Oops: 0002 [#1] PREEMPT SMP
> <4>[45257161.425930] CPU 1
> <4>[45257161.425932] Modules linked in: arptable_filter arp_tables
> dummy ipt_ULOG nf_conntrack_ipv6 nf_defrag_ipv6 ip6t_REJECT
> ip6table_mangle
> nf_conntrack_ipv4 nf_defrag_ipv4 xt_LOG xt_limit xt_hl xt_state
> ipt_REJECT xt_multiport xt_tcpudp iptable_mangle msr sch_prio
> kbfd(O) 8021q garp stp llc tun nf_conntrack_tftp iptable_raw
> iptable_filter ip_tables xt_NOTRACK nf_conntrack xt_mark ip6table_raw
> ip6table_filter ip6_tables x_tables scd(O) amd64_edac_mod k10temp
> hwmon microcode kvm_amd kvm
> <4>[45257161.425985]
> <4>[45257161.425990] Pid: 29253, comm: sandy2 Tainted: P O
> 3.4.43.Ar-3379181.4167M #1
> <4>[45257161.425996] RIP: 0010:[<ffffffff8117a5dc>]
> [<ffffffff8117a5dc>] au_do_open_nondir+0x3b/0xaf
> <4>[45257161.426004] RSP: 0018:ffff8800388b9c28 EFLAGS: 00210287
> <4>[45257161.426007] RAX: 0000000000000000 RBX: ffff8800576263c0 RCX:
> 0000000000000001
> <4>[45257161.426011] RDX: ffff8800576263c0 RSI: 0000000000000000 RDI:
> ffff8800576263c0
> <4>[45257161.426015] RBP: ffff8800388b9c48 R08: 0000000000000000 R09:
> 0000000000000000
> <4>[45257161.426019] R10: ffff880104d1e500 R11: fefefefefefefeff R12:
> 0000000000000000
> <4>[45257161.426022] R13: ffffffff8117a500 R14: ffff8800576263e8 R15:
> 0000000000080000
> <4>[45257161.426027] FS: 0000000000000000(0000)
> GS:ffff88013fb00000(0063) knlGS:00000000f73df8e0
> <4>[45257161.426031] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033
> <4>[45257161.426034] CR2: 0000000000000038 CR3: 000000003ee9c000 CR4:
> 00000000000007e0
> <4>[45257161.426038] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
> 0000000000000000
> <4>[45257161.426041] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
> 0000000000000400
> <4>[45257161.426046] Process sandy2 (pid: 29253, threadinfo
> ffff8800388b8000, task ffff88003d9d5930)
> <4>[45257161.426049] Stack:
> <4>[45257161.426052] ffff8800388b9c48 ffff8800576263c0
> ffff880072891df8 ffffffff8117a5a1
> <4>[45257161.426059] ffff8800388b9c98 ffffffff811789cd
> ffff8800388b9c78 ffffffff813eb090
> <4>[45257161.426065] ffff88013f180000 ffff88013f180000
> ffff8800576263c0 ffff8800576263c0
> <4>[45257161.426072] Call Trace:
> <4>[45257161.426077] [<ffffffff8117a5a1>] ? au_do_open_nondir+0x0/0xaf
> <4>[45257161.426081] [<ffffffff811789cd>] au_do_open+0x57/0xaa
> <4>[45257161.426088] [<ffffffff813eb090>] ? sub_preempt_count+0x92/0xa5
> <4>[45257161.426093] [<ffffffff81179c5b>] ? aufs_open_nondir+0x0/0x80
> <4>[45257161.426097] [<ffffffff81179c8e>] aufs_open_nondir+0x33/0x80
> <4>[45257161.426103] [<ffffffff810a7945>] __dentry_open+0x158/0x275
> <4>[45257161.426107] [<ffffffff810a7b1f>] nameidata_to_filp+0x5b/0x62
> <4>[45257161.426113] [<ffffffff810b5854>] do_last+0x539/0x642
> <4>[45257161.426118] [<ffffffff810b5a28>] path_openat+0xcb/0x361
> <4>[45257161.426123] [<ffffffff810b5dad>] do_filp_open+0x38/0x84
> <4>[45257161.426129] [<ffffffff813eb090>] ? sub_preempt_count+0x92/0xa5
> <4>[45257161.426134] [<ffffffff813e8310>] ? _raw_spin_unlock+0x13/0x2e
> <4>[45257161.426139] [<ffffffff810bfb9c>] ? alloc_fd+0xfb/0x10d
> <4>[45257161.426144] [<ffffffff810a75f0>] do_sys_open+0x116/0x1af
> <4>[45257161.426150] [<ffffffff810e4320>] compat_sys_open+0x16/0x18
> <4>[45257161.426155] [<ffffffff813ee28b>] cstar_dispatch+0x7/0x1e
> <4>[45257161.426158] Code: ec 08 4c 8b 47 18 4d 3b 40 18 49 8b 40 30
> 74 07 49 83 78 10 00 74 29 48 85 c0 75 31 eb 22 48 8b 83 c0 00 00 00
> 44 89 e6 48 89 df
> <44> 88 68 38 e8 b0 e1 ff ff 48 89 df e8 b7 df ff ff 31 c0 eb 05
> <1>[45257161.426218] RIP [<ffffffff8117a5dc>] au_do_open_nondir+0x3b/0xaf
> <4>[45257161.501970] RSP <ffff8800388b9c28>
> <0>[45257161.501974] Kernel version: 3.4.43 #1 SMP PREEMPT Fri Jul 22
> 13:33:33 PDT 2016
> <4>[45257161.608848] CR2: 0000000000000038
>
> <4>[45257161.425996] RIP: 0010:[<ffffffff8117a5dc>]
> [<ffffffff8117a5dc>] au_do_open_nondir+0x3b/0xaf
>
> 28 int au_do_open_nondir(struct file *file, int flags)
> 29 {
> 30 int err;
> 31 aufs_bindex_t bindex;
> 32 struct file *h_file;
> 33 struct dentry *dentry;
> 34 struct au_finfo *finfo;
> 35
> 36 FiMustWriteLock(file);
> 37
> 38 dentry = file->f_dentry;
> 39 err = au_d_alive(dentry);
> 40 if (unlikely(err))
> 41 goto out;
> 42
> 43 finfo = au_fi(file);
> 44 memset(&finfo->fi_htop, 0, sizeof(finfo->fi_htop));
> 45 atomic_set(&finfo->fi_mmapped, 0);
> 46 bindex = au_dbstart(dentry);
> 47 h_file = au_h_open(dentry, bindex, flags, file);
> 48 if (IS_ERR(h_file))
> 49 err = PTR_ERR(h_file);
> 50 else {
> 51 au_set_fbstart(file, bindex); <========
> crash in this macro
> 52 au_set_h_fptr(file, bindex, h_file);
> 53 au_update_figen(file);
> 54 /* todo: necessary? */
> 55 /* file->f_ra = h_file->f_ra; */
> 56 }
>
> 185 static inline void au_set_fbstart(struct file *file, aufs_bindex_t
> bindex)
> 186 {
> 187 FiMustWriteLock(file);
> 188 au_fi(file)->fi_btop = bindex;
> 189 }
> 190
>
> 145 static inline struct au_finfo *au_fi(struct file *file)
> 146 {
> 147 return file->private_data;
> 148 }
>
>
>
> struct inode *inode = d->d_inode;
> err = 0;
> if (unlikely(d_unhashed(d) || !inode || !inode->i_nlink))
> ffffffff8117a5c1: 49 83 78 10 00 cmpq $0x0,0x10(%r8)
> ffffffff8117a5c6: 74 29 je
> ffffffff8117a5f1 <au_do_open_nondir+0x50>
> err = 0;
> if (!IS_ROOT(d))
> err = au_d_hashed_positive(d);
> else {
> inode = d->d_inode;
> if (unlikely(d_unlinked(d) || !inode ||
> !inode->i_nlink))
> ffffffff8117a5c8: 48 85 c0 test %rax,%rax
> ffffffff8117a5cb: 75 31 jne
> ffffffff8117a5fe <au_do_open_nondir+0x5d>
> ffffffff8117a5cd: eb 22 jmp
> ffffffff8117a5f1 <au_do_open_nondir+0x50>
> }
>
> static inline void au_set_fbstart(struct file *file, aufs_bindex_t
> bindex)
> {
> FiMustWriteLock(file);
> au_fi(file)->fi_btop = bindex;
> ffffffff8117a5cf: 48 8b 83 c0 00 00 00 mov 0xc0(%rbx),%rax
> h_file = au_h_open(dentry, bindex, flags, file);
> if (IS_ERR(h_file))
> err = PTR_ERR(h_file);
> else {
> au_set_fbstart(file, bindex);
> au_set_h_fptr(file, bindex, h_file);
> ffffffff8117a5d6: 44 89 e6 mov %r12d,%esi
> ffffffff8117a5d9: 48 89 df mov %rbx,%rdi
> ffffffff8117a5dc: 44 88 68 38 mov
> %r13b,0x38(%rax) <============ crash point
> ffffffff8117a5e0: e8 b0 e1 ff ff callq
> ffffffff81178795 <au_set_h_fptr>
> au_update_figen(file);
> ffffffff8117a5e5: 48 89 df mov %rbx,%rdi
> ffffffff8117a5e8: e8 b7 df ff ff callq
> ffffffff811785a4 <au_update_figen>
> ffffffff8117a5ed: 31 c0 xor %eax,%eax
> ffffffff8117a5ef: eb 05 jmp
> ffffffff8117a5f6 <au_do_open_nondir+0x55>
> ffffffff8117a5f1: b8 fe ff ff ff mov
> $0xfffffffe,%eax
> /* file->f_ra = h_file->f_ra; */
> }
>
>
> Reading symbols from /tmp/vmlinux...done.
> (gdb) list *(au_do_open_nondir+0x3b)
> 0xffffffff8117a5dc is in au_do_open_nondir
> (/bld/kernel/rpmbuild/linux-3.4/fs/aufs/file.h:188).
> warning: Source file is more recent than executable.
> 183 }
> 184
> 185 static inline void au_set_fbstart(struct file *file,
> aufs_bindex_t bindex)
> 186 {
> 187 FiMustWriteLock(file);
> 188 au_fi(file)->fi_btop = bindex;
> 189 }
> 190
> 191 static inline void au_set_fbend_dir(struct file *file,
> aufs_bindex_t bindex)
> 192 {
> (gdb)
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: aufs crash at au_set_fbstart in aufs3 (3.4 kernel).
2018-07-16 21:29 aufs crash at au_set_fbstart in aufs3 (3.4 kernel) Prasad Koya
2018-07-16 21:30 ` Prasad Koya
@ 2018-07-17 2:11 ` Matthew Wilcox
2018-07-17 2:46 ` Prasad Koya
1 sibling, 1 reply; 5+ messages in thread
From: Matthew Wilcox @ 2018-07-17 2:11 UTC (permalink / raw)
To: Prasad Koya; +Cc: linux-fsdevel, Junjiro Okajima
On Mon, Jul 16, 2018 at 02:29:14PM -0700, Prasad Koya wrote:
> 3.4.43.Ar-3379181.4167M #1
You should probably ask Arista about this. They'll probably tell you
that they don't support a kernel that's 5 years old.
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: aufs crash at au_set_fbstart in aufs3 (3.4 kernel).
2018-07-17 2:11 ` Matthew Wilcox
@ 2018-07-17 2:46 ` Prasad Koya
0 siblings, 0 replies; 5+ messages in thread
From: Prasad Koya @ 2018-07-17 2:46 UTC (permalink / raw)
To: willy; +Cc: linux-fsdevel, Junjiro Okajima, aufs-users
Hi Matthew
I work for Arista and we do support this kernel. Am trying to see if
any other aufs user has reported this bug in aufs3. I'm looking at
commits that went into aufs3-standalone but nothing that mentions this
crash. I'll keep looking.
On Mon, Jul 16, 2018 at 7:11 PM Matthew Wilcox <willy@infradead.org> wrote:
>
> On Mon, Jul 16, 2018 at 02:29:14PM -0700, Prasad Koya wrote:
> > 3.4.43.Ar-3379181.4167M #1
>
> You should probably ask Arista about this. They'll probably tell you
> that they don't support a kernel that's 5 years old.
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: aufs crash at au_set_fbstart in aufs3 (3.4 kernel).
2018-07-16 21:30 ` Prasad Koya
@ 2018-07-17 14:29 ` J. R. Okajima
0 siblings, 0 replies; 5+ messages in thread
From: J. R. Okajima @ 2018-07-17 14:29 UTC (permalink / raw)
To: Prasad Koya; +Cc: linux-fsdevel, aufs-users
Prasad Koya:
> > Has anyone run into this crash with aufs 3? We hit this in production.
:::
> > <1>[45257161.254682] BUG: unable to handle kernel NULL pointer
> > dereference at 0000000000000038
> > <1>[45257161.351193] IP: [<ffffffff8117a5dc>] au_do_open_nondir+0x3b/0xaf
I don't think it a good idea to post vger.kernel.org ML since aufs is
not mainlined. It is recommended to post aufs-users ML only, with these
info.
(from aufs README file)
----------------------------------------------------------------------
When you have any problems or strange behaviour in aufs, please let me
know with:
- /proc/mounts (instead of the output of mount(8))
- /sys/module/aufs/*
- /sys/fs/aufs/* (if you have them)
- /debug/aufs/* (if you have them)
- linux kernel version
if your kernel is not plain, for example modified by distributor,
the url where i can download its source is necessary too.
- aufs version which was printed at loading the module or booting the
system, instead of the date you downloaded.
- configuration (define/undefine CONFIG_AUFS_xxx)
- kernel configuration or /proc/config.gz (if you have it)
- behaviour which you think to be incorrect
- actual operation, reproducible one is better
- mailto: aufs-users at lists.sourceforge.net
----------------------------------------------------------------------
Last but not lease, as you surely know, aufs3.4 has been unsupported
since Nov 2013.
J. R. Okajima
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2018-07-17 15:02 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2018-07-16 21:29 aufs crash at au_set_fbstart in aufs3 (3.4 kernel) Prasad Koya
2018-07-16 21:30 ` Prasad Koya
2018-07-17 14:29 ` J. R. Okajima
2018-07-17 2:11 ` Matthew Wilcox
2018-07-17 2:46 ` Prasad Koya
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