Re: [lkp] [fs] 2e9d30b4bd: BUG: unable to handle kernel NULL pointer dereference at 0000000000000018
[[lkp] [fs] 2e9d30b4bd: BUG: unable to handle kernel NULL pointer dereference
at 0018] On 14/12/2015 (Mon 13:56) kernel test robot wrote:
> FYI, we noticed the below changes on
>
> git://internal_merge_and_test_tree
> revert-8ecb4258a962d2c917ed21e677a7032711c925bb-2e9d30b4bd5f390796313567371b70fbf1966e73
> commit 2e9d30b4bd5f390796313567371b70fbf1966e73 ("fs: make hugetlbfs/inode.c
> explicitly non-modular")
Thanks for the report; I was able to reproduce it and fix it. Will send
the fixed version shortly.
BTW, what is this "internal_merge_and_test_tree" based on? Does it
collect stuff from lkml directly? As far as I could tell this series
was not merged to any git.kernel.org branch; not even one of my own.
Paul.
--
>
>
> ++++
> || cb5bdfcd1a | 2e9d30b4bd |
> ++++
> | boot_successes | 2 | 0 |
> | boot_failures | 10 | 10 |
> | IP-Config:Auto-configuration_of_network_failed | 10 | 2 |
> | BUG:unable_to_handle_kernel| 0 | 8 |
> | Oops | 0 | 8 |
> | RIP:__lock_acquire | 0 | 8 |
> | Kernel_panic-not_syncing:Fatal_exception | 0 | 8 |
> | backtrace:do_mount | 0 | 8 |
> | backtrace:SyS_mount| 0 | 8 |
> ++++
>
>
>
> [9.212200] systemd-sysv-generator[126]: Ignoring K02urandom symlink in
> rc6.d, not generating urandom.service.
> [9.212226] systemd-sysv-generator[126]: Ignoring K07hwclock.sh symlink in
> rc6.d, not generating hwclock.service.
> [9.212258] systemd-sysv-generator[126]: Ignoring K01watchdog symlink in
> rc6.d, not generating watchdog.service.
> [9.597704] BUG: unable to handle kernel NULL pointer dereference at
> 0018
> [9.599081] IP: [] __lock_acquire+0x160/0x1a3f
> [9.600030] PGD 1b6a7067 PUD 1b711067 PMD 0
> [9.600942] Oops: [#1] PREEMPT DEBUG_PAGEALLOC
> [9.601890] Modules linked in:
> [9.602481] CPU: 0 PID: 139 Comm: mount Not tainted
> 4.4.0-rc4-9-g2e9d30b #1
> [9.603625] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
> Debian-1.8.2-1 04/01/2014
> [9.604965] task: 88001bcc ti: 88001b72 task.ti:
> 88001b72
> [9.615944] RIP: 0010:[] []
> __lock_acquire+0x160/0x1a3f
> [9.617290] RSP: 0018:88001b723890 EFLAGS: 00010002
> [9.618092] RAX: 0046 RBX: RCX:
>
> [9.619104] RDX: RSI: RDI:
> 0018
> [9.620116] RBP: 88001b723960 R08: 0001 R09:
> 0001
> [9.621157] R10: 88001b723980 R11: 1e27 R12:
>
> [9.622170] R13: 88001bcc R14: 0018 R15:
> 0001
> [9.623175] FS: 7f77a46bb840() GS:9322()
> knlGS:
> [9.624416] CS: 0010 DS: ES: CR0: 80050033
> [9.625264] CR2: 0018 CR3: 1b703000 CR4:
> 06f0
> [9.626268] Stack:
> [9.626673] 0400 0002 88001bcc
> 0002
> [9.628089] 9297f5b7 0001 8800
>
> [9.629496] 88001bcc 8800 928ae160
> 88001bcc
> [9.630941] Call Trace:
> [9.631404] [] ? deactivate_slab+0x41c/0x919
> [9.632286] [] ? mark_held_locks+0x5e/0x74
> [9.633136] [] ? get_page_from_freelist+0x819/0xd4f
> [9.634082] [] lock_acquire+0x121/0x1c2
> [9.634904] [] ? lock_acquire+0x121/0x1c2
> [9.635739] [] ? deactivate_slab+0x41c/0x919
> [9.636622] [] _raw_spin_lock+0x32/0x41
> [9.637453] [] ? deactivate_slab+0x41c/0x919
> [9.638316] [] deactivate_slab+0x41c/0x919
> [9.639162] [] ? print_context_stack+0x6a/0xb6
> [9.640040] [] ? preempt_count_sub+0x34/0x3f
> [9.640945] [] ? dump_trace+0x28a/0x2a2
> [9.641761] [] ? hugetlbfs_alloc_inode+0x99/0xcc
> [9.642667] [] ? hugetlbfs_alloc_inode+0x99/0xcc
> [9.643571] [] ? save_stack_trace+0x2a/0x45
> [9.61] [] ? set_track+0x63/0xd9
> [9.645247] [] ___slab_alloc+0x60b/0x658
> [9.6462
Re: [lkp] [fs] 2e9d30b4bd: BUG: unable to handle kernel NULL pointer dereference at 0000000000000018
[[lkp] [fs] 2e9d30b4bd: BUG: unable to handle kernel NULL pointer dereference
at 0018] On 14/12/2015 (Mon 13:56) kernel test robot wrote:
> FYI, we noticed the below changes on
>
> git://internal_merge_and_test_tree
> revert-8ecb4258a962d2c917ed21e677a7032711c925bb-2e9d30b4bd5f390796313567371b70fbf1966e73
> commit 2e9d30b4bd5f390796313567371b70fbf1966e73 ("fs: make hugetlbfs/inode.c
> explicitly non-modular")
Thanks for the report; I was able to reproduce it and fix it. Will send
the fixed version shortly.
BTW, what is this "internal_merge_and_test_tree" based on? Does it
collect stuff from lkml directly? As far as I could tell this series
was not merged to any git.kernel.org branch; not even one of my own.
Paul.
--
>
>
> ++++
> || cb5bdfcd1a | 2e9d30b4bd |
> ++++
> | boot_successes | 2 | 0 |
> | boot_failures | 10 | 10 |
> | IP-Config:Auto-configuration_of_network_failed | 10 | 2 |
> | BUG:unable_to_handle_kernel| 0 | 8 |
> | Oops | 0 | 8 |
> | RIP:__lock_acquire | 0 | 8 |
> | Kernel_panic-not_syncing:Fatal_exception | 0 | 8 |
> | backtrace:do_mount | 0 | 8 |
> | backtrace:SyS_mount| 0 | 8 |
> ++++
>
>
>
> [9.212200] systemd-sysv-generator[126]: Ignoring K02urandom symlink in
> rc6.d, not generating urandom.service.
> [9.212226] systemd-sysv-generator[126]: Ignoring K07hwclock.sh symlink in
> rc6.d, not generating hwclock.service.
> [9.212258] systemd-sysv-generator[126]: Ignoring K01watchdog symlink in
> rc6.d, not generating watchdog.service.
> [9.597704] BUG: unable to handle kernel NULL pointer dereference at
> 0018
> [9.599081] IP: [] __lock_acquire+0x160/0x1a3f
> [9.600030] PGD 1b6a7067 PUD 1b711067 PMD 0
> [9.600942] Oops: [#1] PREEMPT DEBUG_PAGEALLOC
> [9.601890] Modules linked in:
> [9.602481] CPU: 0 PID: 139 Comm: mount Not tainted
> 4.4.0-rc4-9-g2e9d30b #1
> [9.603625] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
> Debian-1.8.2-1 04/01/2014
> [9.604965] task: 88001bcc ti: 88001b72 task.ti:
> 88001b72
> [9.615944] RIP: 0010:[] []
> __lock_acquire+0x160/0x1a3f
> [9.617290] RSP: 0018:88001b723890 EFLAGS: 00010002
> [9.618092] RAX: 0046 RBX: RCX:
>
> [9.619104] RDX: RSI: RDI:
> 0018
> [9.620116] RBP: 88001b723960 R08: 0001 R09:
> 0001
> [9.621157] R10: 88001b723980 R11: 1e27 R12:
>
> [9.622170] R13: 88001bcc R14: 0018 R15:
> 0001
> [9.623175] FS: 7f77a46bb840() GS:9322()
> knlGS:
> [9.624416] CS: 0010 DS: ES: CR0: 80050033
> [9.625264] CR2: 0018 CR3: 1b703000 CR4:
> 06f0
> [9.626268] Stack:
> [9.626673] 0400 0002 88001bcc
> 0002
> [9.628089] 9297f5b7 0001 8800
>
> [9.629496] 88001bcc 8800 928ae160
> 88001bcc
> [9.630941] Call Trace:
> [9.631404] [] ? deactivate_slab+0x41c/0x919
> [9.632286] [] ? mark_held_locks+0x5e/0x74
> [9.633136] [] ? get_page_from_freelist+0x819/0xd4f
> [9.634082] [] lock_acquire+0x121/0x1c2
> [9.634904] [] ? lock_acquire+0x121/0x1c2
> [9.635739] [] ? deactivate_slab+0x41c/0x919
> [9.636622] [] _raw_spin_lock+0x32/0x41
> [9.637453] [] ? deactivate_slab+0x41c/0x919
> [9.638316] [] deactivate_slab+0x41c/0x919
> [9.639162] [] ? print_context_stack+0x6a/0xb6
> [9.640040] [] ? preempt_count_sub+0x34/0x3f
> [9.640945] [] ? dump_trace+0x28a/0x2a2
> [9.641761] [] ? hugetlbfs_alloc_inode+0x99/0xcc
> [9.642667] [] ? hugetlbfs_alloc_inode+0x99/0xcc
> [9.643571] [] ? save_stack_trace+0x2a/0x45
> [9.61] [] ? set_track+0x63/0xd9
> [9.645247] [] ___slab_alloc+0x60b/0x658
> [9.6462
[lkp] [fs] 2e9d30b4bd: BUG: unable to handle kernel NULL pointer dereference at 0000000000000018
FYI, we noticed the below changes on
git://internal_merge_and_test_tree
revert-8ecb4258a962d2c917ed21e677a7032711c925bb-2e9d30b4bd5f390796313567371b70fbf1966e73
commit 2e9d30b4bd5f390796313567371b70fbf1966e73 ("fs: make hugetlbfs/inode.c
explicitly non-modular")
++++
|| cb5bdfcd1a | 2e9d30b4bd |
++++
| boot_successes | 2 | 0 |
| boot_failures | 10 | 10 |
| IP-Config:Auto-configuration_of_network_failed | 10 | 2 |
| BUG:unable_to_handle_kernel| 0 | 8 |
| Oops | 0 | 8 |
| RIP:__lock_acquire | 0 | 8 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 8 |
| backtrace:do_mount | 0 | 8 |
| backtrace:SyS_mount| 0 | 8 |
++++
[9.212200] systemd-sysv-generator[126]: Ignoring K02urandom symlink in
rc6.d, not generating urandom.service.
[9.212226] systemd-sysv-generator[126]: Ignoring K07hwclock.sh symlink in
rc6.d, not generating hwclock.service.
[9.212258] systemd-sysv-generator[126]: Ignoring K01watchdog symlink in
rc6.d, not generating watchdog.service.
[9.597704] BUG: unable to handle kernel NULL pointer dereference at
0018
[9.599081] IP: [] __lock_acquire+0x160/0x1a3f
[9.600030] PGD 1b6a7067 PUD 1b711067 PMD 0
[9.600942] Oops: [#1] PREEMPT DEBUG_PAGEALLOC
[9.601890] Modules linked in:
[9.602481] CPU: 0 PID: 139 Comm: mount Not tainted 4.4.0-rc4-9-g2e9d30b
#1
[9.603625] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
Debian-1.8.2-1 04/01/2014
[9.604965] task: 88001bcc ti: 88001b72 task.ti:
88001b72
[9.615944] RIP: 0010:[] []
__lock_acquire+0x160/0x1a3f
[9.617290] RSP: 0018:88001b723890 EFLAGS: 00010002
[9.618092] RAX: 0046 RBX: RCX:
[9.619104] RDX: RSI: RDI: 0018
[9.620116] RBP: 88001b723960 R08: 0001 R09: 0001
[9.621157] R10: 88001b723980 R11: 1e27 R12:
[9.622170] R13: 88001bcc R14: 0018 R15: 0001
[9.623175] FS: 7f77a46bb840() GS:9322()
knlGS:
[9.624416] CS: 0010 DS: ES: CR0: 80050033
[9.625264] CR2: 0018 CR3: 1b703000 CR4: 06f0
[9.626268] Stack:
[9.626673] 0400 0002 88001bcc
0002
[9.628089] 9297f5b7 0001 8800
[9.629496] 88001bcc 8800 928ae160
88001bcc
[9.630941] Call Trace:
[9.631404] [] ? deactivate_slab+0x41c/0x919
[9.632286] [] ? mark_held_locks+0x5e/0x74
[9.633136] [] ? get_page_from_freelist+0x819/0xd4f
[9.634082] [] lock_acquire+0x121/0x1c2
[9.634904] [] ? lock_acquire+0x121/0x1c2
[9.635739] [] ? deactivate_slab+0x41c/0x919
[9.636622] [] _raw_spin_lock+0x32/0x41
[9.637453] [] ? deactivate_slab+0x41c/0x919
[9.638316] [] deactivate_slab+0x41c/0x919
[9.639162] [] ? print_context_stack+0x6a/0xb6
[9.640040] [] ? preempt_count_sub+0x34/0x3f
[9.640945] [] ? dump_trace+0x28a/0x2a2
[9.641761] [] ? hugetlbfs_alloc_inode+0x99/0xcc
[9.642667] [] ? hugetlbfs_alloc_inode+0x99/0xcc
[9.643571] [] ? save_stack_trace+0x2a/0x45
[9.61] [] ? set_track+0x63/0xd9
[9.645247] [] ___slab_alloc+0x60b/0x658
[9.646226] [] ? deactivate_slab+0x5/0x919
[9.647112] [] ? ___slab_alloc+0x60b/0x658
[9.648123] [] ? hugetlbfs_alloc_inode+0x99/0xcc
[9.649058] [] ? __lock_is_held+0x3b/0x56
[9.649917] [] __slab_alloc+0x44/0x78
[9.650955] [] ? ___slab_alloc+0x5/0x658
[9.651942] [] ? __slab_alloc+0x44/0x78
[9.653128] [] ? hugetlbfs_alloc_inode+0x99/0xcc
[9.654030] [] kmem_cache_alloc+0xb0/0x2e5
[9.654864] [] ? hugetlbfs_alloc_inode+0x99/0xcc
[9.655749] [] ? hugetlbfs_parse_options+0x2ae/0x2ae
[9.656911] [] hugetlbfs_alloc_inode+0x99/0xcc
[9.657785] [] ? hugetlbfs_parse_options+0x2ae/0x2ae
[9.658963] [] alloc_inode+0x1d/0x94
[9.659745] [] new_inode_pseudo+0x11/0x58
[9.660580] [] new_inode+0x16/0x2d
[9.661396] [] hugetlbfs_fill_super+0x168/0x237
[9.662310] [] mount_nodev+0x64/0xa1
[9.663106] [] hugetlbfs_mount+0x18/0x1a
[9.663943] []
[lkp] [fs] 2e9d30b4bd: BUG: unable to handle kernel NULL pointer dereference at 0000000000000018
FYI, we noticed the below changes on
git://internal_merge_and_test_tree
revert-8ecb4258a962d2c917ed21e677a7032711c925bb-2e9d30b4bd5f390796313567371b70fbf1966e73
commit 2e9d30b4bd5f390796313567371b70fbf1966e73 ("fs: make hugetlbfs/inode.c
explicitly non-modular")
++++
|| cb5bdfcd1a | 2e9d30b4bd |
++++
| boot_successes | 2 | 0 |
| boot_failures | 10 | 10 |
| IP-Config:Auto-configuration_of_network_failed | 10 | 2 |
| BUG:unable_to_handle_kernel| 0 | 8 |
| Oops | 0 | 8 |
| RIP:__lock_acquire | 0 | 8 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 8 |
| backtrace:do_mount | 0 | 8 |
| backtrace:SyS_mount| 0 | 8 |
++++
[9.212200] systemd-sysv-generator[126]: Ignoring K02urandom symlink in
rc6.d, not generating urandom.service.
[9.212226] systemd-sysv-generator[126]: Ignoring K07hwclock.sh symlink in
rc6.d, not generating hwclock.service.
[9.212258] systemd-sysv-generator[126]: Ignoring K01watchdog symlink in
rc6.d, not generating watchdog.service.
[9.597704] BUG: unable to handle kernel NULL pointer dereference at
0018
[9.599081] IP: [] __lock_acquire+0x160/0x1a3f
[9.600030] PGD 1b6a7067 PUD 1b711067 PMD 0
[9.600942] Oops: [#1] PREEMPT DEBUG_PAGEALLOC
[9.601890] Modules linked in:
[9.602481] CPU: 0 PID: 139 Comm: mount Not tainted 4.4.0-rc4-9-g2e9d30b
#1
[9.603625] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
Debian-1.8.2-1 04/01/2014
[9.604965] task: 88001bcc ti: 88001b72 task.ti:
88001b72
[9.615944] RIP: 0010:[] []
__lock_acquire+0x160/0x1a3f
[9.617290] RSP: 0018:88001b723890 EFLAGS: 00010002
[9.618092] RAX: 0046 RBX: RCX:
[9.619104] RDX: RSI: RDI: 0018
[9.620116] RBP: 88001b723960 R08: 0001 R09: 0001
[9.621157] R10: 88001b723980 R11: 1e27 R12:
[9.622170] R13: 88001bcc R14: 0018 R15: 0001
[9.623175] FS: 7f77a46bb840() GS:9322()
knlGS:
[9.624416] CS: 0010 DS: ES: CR0: 80050033
[9.625264] CR2: 0018 CR3: 1b703000 CR4: 06f0
[9.626268] Stack:
[9.626673] 0400 0002 88001bcc
0002
[9.628089] 9297f5b7 0001 8800
[9.629496] 88001bcc 8800 928ae160
88001bcc
[9.630941] Call Trace:
[9.631404] [] ? deactivate_slab+0x41c/0x919
[9.632286] [] ? mark_held_locks+0x5e/0x74
[9.633136] [] ? get_page_from_freelist+0x819/0xd4f
[9.634082] [] lock_acquire+0x121/0x1c2
[9.634904] [] ? lock_acquire+0x121/0x1c2
[9.635739] [] ? deactivate_slab+0x41c/0x919
[9.636622] [] _raw_spin_lock+0x32/0x41
[9.637453] [] ? deactivate_slab+0x41c/0x919
[9.638316] [] deactivate_slab+0x41c/0x919
[9.639162] [] ? print_context_stack+0x6a/0xb6
[9.640040] [] ? preempt_count_sub+0x34/0x3f
[9.640945] [] ? dump_trace+0x28a/0x2a2
[9.641761] [] ? hugetlbfs_alloc_inode+0x99/0xcc
[9.642667] [] ? hugetlbfs_alloc_inode+0x99/0xcc
[9.643571] [] ? save_stack_trace+0x2a/0x45
[9.61] [] ? set_track+0x63/0xd9
[9.645247] [] ___slab_alloc+0x60b/0x658
[9.646226] [] ? deactivate_slab+0x5/0x919
[9.647112] [] ? ___slab_alloc+0x60b/0x658
[9.648123] [] ? hugetlbfs_alloc_inode+0x99/0xcc
[9.649058] [] ? __lock_is_held+0x3b/0x56
[9.649917] [] __slab_alloc+0x44/0x78
[9.650955] [] ? ___slab_alloc+0x5/0x658
[9.651942] [] ? __slab_alloc+0x44/0x78
[9.653128] [] ? hugetlbfs_alloc_inode+0x99/0xcc
[9.654030] [] kmem_cache_alloc+0xb0/0x2e5
[9.654864] [] ? hugetlbfs_alloc_inode+0x99/0xcc
[9.655749] [] ? hugetlbfs_parse_options+0x2ae/0x2ae
[9.656911] [] hugetlbfs_alloc_inode+0x99/0xcc
[9.657785] [] ? hugetlbfs_parse_options+0x2ae/0x2ae
[9.658963] [] alloc_inode+0x1d/0x94
[9.659745] [] new_inode_pseudo+0x11/0x58
[9.660580] [] new_inode+0x16/0x2d
[9.661396] [] hugetlbfs_fill_super+0x168/0x237
[9.662310] [] mount_nodev+0x64/0xa1
[9.663106] [] hugetlbfs_mount+0x18/0x1a
[9.663943] []
