KASAN: use-after-free Read in afs_deactivate_cell (2)
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syzbot
Sep 21, 2020, 6:33:18 AM9/21/20
to dhow...@redhat.com, linu...@lists.infradead.org, linux-...@vger.kernel.org, syzkall...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 325d0eab Merge branch 'akpm' (patches from Andrew)
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=15ec729b900000
kernel config: https://syzkaller.appspot.com/x/.config?x=8d39f8ae68f9dcd5
dashboard link: https://syzkaller.appspot.com/bug?extid=a5e4946b04d6ca8fa5f3
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+a5e494...@syzkaller.appspotmail.com
==================================================================
BUG: KASAN: use-after-free in __hlist_del include/linux/list.h:826 [inline]
BUG: KASAN: use-after-free in hlist_del_rcu include/linux/rculist.h:487 [inline]
BUG: KASAN: use-after-free in afs_deactivate_cell+0x165/0x1a0 fs/afs/cell.c:647
Read of size 8 at addr ffff888090699880 by task kworker/0:3/7433
CPU: 0 PID: 7433 Comm: kworker/0:3 Not tainted 5.9.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: afs afs_manage_cell
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x198/0x1fd lib/dump_stack.c:118
print_address_description.constprop.0.cold+0xae/0x497 mm/kasan/report.c:383
__kasan_report mm/kasan/report.c:513 [inline]
kasan_report.cold+0x1f/0x37 mm/kasan/report.c:530
__hlist_del include/linux/list.h:826 [inline]
hlist_del_rcu include/linux/rculist.h:487 [inline]
afs_deactivate_cell+0x165/0x1a0 fs/afs/cell.c:647
afs_manage_cell+0x326/0x11c0 fs/afs/cell.c:721
process_one_work+0x94c/0x1670 kernel/workqueue.c:2269
process_scheduled_works kernel/workqueue.c:2331 [inline]
worker_thread+0x82b/0x1120 kernel/workqueue.c:2417
kthread+0x3b5/0x4a0 kernel/kthread.c:292
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
Allocated by task 19085:
kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48
kasan_set_track mm/kasan/common.c:56 [inline]
__kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:461
kmem_cache_alloc_trace+0x174/0x300 mm/slab.c:3550
kmalloc include/linux/slab.h:554 [inline]
kzalloc include/linux/slab.h:666 [inline]
afs_alloc_cell fs/afs/cell.c:151 [inline]
afs_lookup_cell+0x5c8/0x1440 fs/afs/cell.c:262
afs_parse_source fs/afs/super.c:290 [inline]
afs_parse_param+0x404/0x8c0 fs/afs/super.c:326
vfs_parse_fs_param fs/fs_context.c:117 [inline]
vfs_parse_fs_param+0x203/0x550 fs/fs_context.c:98
vfs_parse_fs_string+0xe6/0x150 fs/fs_context.c:161
generic_parse_monolithic+0x16f/0x1f0 fs/fs_context.c:201
do_new_mount fs/namespace.c:2871 [inline]
path_mount+0x133f/0x20a0 fs/namespace.c:3192
do_mount fs/namespace.c:3205 [inline]
__do_sys_mount fs/namespace.c:3413 [inline]
__se_sys_mount fs/namespace.c:3390 [inline]
__x64_sys_mount+0x27f/0x300 fs/namespace.c:3390
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Freed by task 9:
kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48
kasan_set_track+0x1c/0x30 mm/kasan/common.c:56
kasan_set_free_info+0x1b/0x30 mm/kasan/generic.c:355
__kasan_slab_free+0xd8/0x120 mm/kasan/common.c:422
__cache_free mm/slab.c:3418 [inline]
kfree+0x10e/0x2b0 mm/slab.c:3756
rcu_do_batch kernel/rcu/tree.c:2428 [inline]
rcu_core+0x5ca/0x1130 kernel/rcu/tree.c:2656
__do_softirq+0x1f8/0xb23 kernel/softirq.c:298
Last call_rcu():
kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48
kasan_record_aux_stack+0x82/0xb0 mm/kasan/generic.c:346
__call_rcu kernel/rcu/tree.c:2894 [inline]
call_rcu+0x15e/0x7c0 kernel/rcu/tree.c:2968
afs_manage_cell+0x250/0x11c0 fs/afs/cell.c:751
process_one_work+0x94c/0x1670 kernel/workqueue.c:2269
worker_thread+0x64c/0x1120 kernel/workqueue.c:2415
kthread+0x3b5/0x4a0 kernel/kthread.c:292
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
The buggy address belongs to the object at ffff888090699800
which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 128 bytes inside of
1024-byte region [ffff888090699800, ffff888090699c00)
The buggy address belongs to the page:
page:00000000d3e3a7d0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x90699
flags: 0xfffe0000000200(slab)
raw: 00fffe0000000200 ffffea0002558fc8 ffffea0001240988 ffff8880aa040700
raw: 0000000000000000 ffff888090699000 0000000100000002 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff888090699780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff888090699800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888090699880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888090699900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888090699980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
---
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 syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following issue on:
HEAD commit: 325d0eab Merge branch 'akpm' (patches from Andrew)
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=15ec729b900000
kernel config: https://syzkaller.appspot.com/x/.config?x=8d39f8ae68f9dcd5
dashboard link: https://syzkaller.appspot.com/bug?extid=a5e4946b04d6ca8fa5f3
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+a5e494...@syzkaller.appspotmail.com
==================================================================
BUG: KASAN: use-after-free in __hlist_del include/linux/list.h:826 [inline]
BUG: KASAN: use-after-free in hlist_del_rcu include/linux/rculist.h:487 [inline]
BUG: KASAN: use-after-free in afs_deactivate_cell+0x165/0x1a0 fs/afs/cell.c:647
Read of size 8 at addr ffff888090699880 by task kworker/0:3/7433
CPU: 0 PID: 7433 Comm: kworker/0:3 Not tainted 5.9.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: afs afs_manage_cell
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x198/0x1fd lib/dump_stack.c:118
print_address_description.constprop.0.cold+0xae/0x497 mm/kasan/report.c:383
__kasan_report mm/kasan/report.c:513 [inline]
kasan_report.cold+0x1f/0x37 mm/kasan/report.c:530
__hlist_del include/linux/list.h:826 [inline]
hlist_del_rcu include/linux/rculist.h:487 [inline]
afs_deactivate_cell+0x165/0x1a0 fs/afs/cell.c:647
afs_manage_cell+0x326/0x11c0 fs/afs/cell.c:721
process_one_work+0x94c/0x1670 kernel/workqueue.c:2269
process_scheduled_works kernel/workqueue.c:2331 [inline]
worker_thread+0x82b/0x1120 kernel/workqueue.c:2417
kthread+0x3b5/0x4a0 kernel/kthread.c:292
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
Allocated by task 19085:
kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48
kasan_set_track mm/kasan/common.c:56 [inline]
__kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:461
kmem_cache_alloc_trace+0x174/0x300 mm/slab.c:3550
kmalloc include/linux/slab.h:554 [inline]
kzalloc include/linux/slab.h:666 [inline]
afs_alloc_cell fs/afs/cell.c:151 [inline]
afs_lookup_cell+0x5c8/0x1440 fs/afs/cell.c:262
afs_parse_source fs/afs/super.c:290 [inline]
afs_parse_param+0x404/0x8c0 fs/afs/super.c:326
vfs_parse_fs_param fs/fs_context.c:117 [inline]
vfs_parse_fs_param+0x203/0x550 fs/fs_context.c:98
vfs_parse_fs_string+0xe6/0x150 fs/fs_context.c:161
generic_parse_monolithic+0x16f/0x1f0 fs/fs_context.c:201
do_new_mount fs/namespace.c:2871 [inline]
path_mount+0x133f/0x20a0 fs/namespace.c:3192
do_mount fs/namespace.c:3205 [inline]
__do_sys_mount fs/namespace.c:3413 [inline]
__se_sys_mount fs/namespace.c:3390 [inline]
__x64_sys_mount+0x27f/0x300 fs/namespace.c:3390
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Freed by task 9:
kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48
kasan_set_track+0x1c/0x30 mm/kasan/common.c:56
kasan_set_free_info+0x1b/0x30 mm/kasan/generic.c:355
__kasan_slab_free+0xd8/0x120 mm/kasan/common.c:422
__cache_free mm/slab.c:3418 [inline]
kfree+0x10e/0x2b0 mm/slab.c:3756
rcu_do_batch kernel/rcu/tree.c:2428 [inline]
rcu_core+0x5ca/0x1130 kernel/rcu/tree.c:2656
__do_softirq+0x1f8/0xb23 kernel/softirq.c:298
Last call_rcu():
kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48
kasan_record_aux_stack+0x82/0xb0 mm/kasan/generic.c:346
__call_rcu kernel/rcu/tree.c:2894 [inline]
call_rcu+0x15e/0x7c0 kernel/rcu/tree.c:2968
afs_manage_cell+0x250/0x11c0 fs/afs/cell.c:751
process_one_work+0x94c/0x1670 kernel/workqueue.c:2269
worker_thread+0x64c/0x1120 kernel/workqueue.c:2415
kthread+0x3b5/0x4a0 kernel/kthread.c:292
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
The buggy address belongs to the object at ffff888090699800
which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 128 bytes inside of
1024-byte region [ffff888090699800, ffff888090699c00)
The buggy address belongs to the page:
page:00000000d3e3a7d0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x90699
flags: 0xfffe0000000200(slab)
raw: 00fffe0000000200 ffffea0002558fc8 ffffea0001240988 ffff8880aa040700
raw: 0000000000000000 ffff888090699000 0000000100000002 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff888090699780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff888090699800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888090699880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888090699900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888090699980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
---
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 syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot
Sep 30, 2020, 4:25:16 AM9/30/20
to dhow...@redhat.com, linu...@lists.infradead.org, linux-...@vger.kernel.org, syzkall...@googlegroups.com
syzbot has found a reproducer for the following issue on:
HEAD commit: 49e7e3e9 Add linux-next specific files for 20200929
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=12fbf387900000
kernel config: https://syzkaller.appspot.com/x/.config?x=b823d07e241e7aee
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14ba5be3900000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+a5e494...@syzkaller.appspotmail.com
==================================================================
BUG: KASAN: use-after-free in __hlist_del include/linux/list.h:826 [inline]
BUG: KASAN: use-after-free in hlist_del_rcu include/linux/rculist.h:514 [inline]
CPU: 0 PID: 2653 Comm: kworker/0:3 Not tainted 5.9.0-rc7-next-20200929-syzkaller #0
print_address_description.constprop.0.cold+0xae/0x497 mm/kasan/report.c:385
__kasan_report mm/kasan/report.c:545 [inline]
kasan_report.cold+0x1f/0x37 mm/kasan/report.c:562
__hlist_del include/linux/list.h:826 [inline]
hlist_del_rcu include/linux/rculist.h:514 [inline]
worker_thread+0x64c/0x1120 kernel/workqueue.c:2415
kthread+0x3af/0x4a0 kernel/kthread.c:292
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
Allocated by task 7905:
path_mount+0x1266/0x1e70 fs/namespace.c:3227
__do_sys_mount fs/namespace.c:3438 [inline]
__se_sys_mount fs/namespace.c:3411 [inline]
__x64_sys_mount+0x278/0x2f0 fs/namespace.c:3411
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Freed by task 2653:
kfree+0x10e/0x2a0 mm/slab.c:3758
rcu_do_batch kernel/rcu/tree.c:2481 [inline]
rcu_core+0x645/0x1240 kernel/rcu/tree.c:2715
__do_softirq+0x203/0xab6 kernel/softirq.c:298
Last call_rcu():
kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48
kasan_record_aux_stack+0x82/0xb0 mm/kasan/generic.c:346
__call_rcu kernel/rcu/tree.c:2957 [inline]
call_rcu+0x15e/0x7d0 kernel/rcu/tree.c:3030
afs_manage_cell+0x250/0x11c0 fs/afs/cell.c:751
process_one_work+0x933/0x15a0 kernel/workqueue.c:2269
worker_thread+0x64c/0x1120 kernel/workqueue.c:2415
kthread+0x3af/0x4a0 kernel/kthread.c:292
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
The buggy address belongs to the object at ffff888093021000
flags: 0xfffe0000000200(slab)
raw: 00fffe0000000200 ffffea0002992c48 ffffea000249fd08 ffff8880aa040700
raw: 0000000000000000 ffff888093021000 0000000100000002 0000000000000000
ffff888093021000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888093021080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888093021100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888093021180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
HEAD commit: 49e7e3e9 Add linux-next specific files for 20200929
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=12fbf387900000
kernel config: https://syzkaller.appspot.com/x/.config?x=b823d07e241e7aee
dashboard link: https://syzkaller.appspot.com/bug?extid=a5e4946b04d6ca8fa5f3
compiler: gcc (GCC) 10.1.0-syz 20200507
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=173c446d900000
compiler: gcc (GCC) 10.1.0-syz 20200507
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14ba5be3900000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+a5e494...@syzkaller.appspotmail.com
==================================================================
BUG: KASAN: use-after-free in __hlist_del include/linux/list.h:826 [inline]
BUG: KASAN: use-after-free in afs_deactivate_cell+0x165/0x1a0 fs/afs/cell.c:647
Read of size 8 at addr ffff888093021080 by task kworker/0:3/2653
CPU: 0 PID: 2653 Comm: kworker/0:3 Not tainted 5.9.0-rc7-next-20200929-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: afs afs_manage_cell
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x198/0x1fb lib/dump_stack.c:118
Workqueue: afs afs_manage_cell
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
print_address_description.constprop.0.cold+0xae/0x497 mm/kasan/report.c:385
__kasan_report mm/kasan/report.c:545 [inline]
kasan_report.cold+0x1f/0x37 mm/kasan/report.c:562
__hlist_del include/linux/list.h:826 [inline]
hlist_del_rcu include/linux/rculist.h:514 [inline]
afs_deactivate_cell+0x165/0x1a0 fs/afs/cell.c:647
afs_manage_cell+0x326/0x11c0 fs/afs/cell.c:721
process_one_work+0x933/0x15a0 kernel/workqueue.c:2269
afs_manage_cell+0x326/0x11c0 fs/afs/cell.c:721
worker_thread+0x64c/0x1120 kernel/workqueue.c:2415
kthread+0x3af/0x4a0 kernel/kthread.c:292
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
Allocated by task 7905:
kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48
kasan_set_track mm/kasan/common.c:56 [inline]
__kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:461
kmem_cache_alloc_trace+0x1a0/0x480 mm/slab.c:3552
kasan_set_track mm/kasan/common.c:56 [inline]
__kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:461
kmalloc include/linux/slab.h:554 [inline]
kzalloc include/linux/slab.h:666 [inline]
afs_alloc_cell fs/afs/cell.c:151 [inline]
afs_lookup_cell+0x5b8/0x1450 fs/afs/cell.c:262
kzalloc include/linux/slab.h:666 [inline]
afs_alloc_cell fs/afs/cell.c:151 [inline]
afs_parse_source fs/afs/super.c:290 [inline]
afs_parse_param+0x404/0x8c0 fs/afs/super.c:326
vfs_parse_fs_param fs/fs_context.c:117 [inline]
vfs_parse_fs_param+0x203/0x550 fs/fs_context.c:98
vfs_parse_fs_string+0xe6/0x150 fs/fs_context.c:161
generic_parse_monolithic+0x16f/0x1f0 fs/fs_context.c:201
do_new_mount fs/namespace.c:2892 [inline]
afs_parse_param+0x404/0x8c0 fs/afs/super.c:326
vfs_parse_fs_param fs/fs_context.c:117 [inline]
vfs_parse_fs_param+0x203/0x550 fs/fs_context.c:98
vfs_parse_fs_string+0xe6/0x150 fs/fs_context.c:161
generic_parse_monolithic+0x16f/0x1f0 fs/fs_context.c:201
path_mount+0x1266/0x1e70 fs/namespace.c:3227
__do_sys_mount fs/namespace.c:3438 [inline]
__se_sys_mount fs/namespace.c:3411 [inline]
__x64_sys_mount+0x278/0x2f0 fs/namespace.c:3411
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Freed by task 2653:
kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48
kasan_set_track+0x1c/0x30 mm/kasan/common.c:56
kasan_set_free_info+0x1b/0x30 mm/kasan/generic.c:355
__kasan_slab_free+0xd8/0x120 mm/kasan/common.c:422
__cache_free mm/slab.c:3420 [inline]
kasan_set_track+0x1c/0x30 mm/kasan/common.c:56
kasan_set_free_info+0x1b/0x30 mm/kasan/generic.c:355
__kasan_slab_free+0xd8/0x120 mm/kasan/common.c:422
kfree+0x10e/0x2a0 mm/slab.c:3758
rcu_do_batch kernel/rcu/tree.c:2481 [inline]
rcu_core+0x645/0x1240 kernel/rcu/tree.c:2715
__do_softirq+0x203/0xab6 kernel/softirq.c:298
Last call_rcu():
kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48
kasan_record_aux_stack+0x82/0xb0 mm/kasan/generic.c:346
call_rcu+0x15e/0x7d0 kernel/rcu/tree.c:3030
afs_manage_cell+0x250/0x11c0 fs/afs/cell.c:751
process_one_work+0x933/0x15a0 kernel/workqueue.c:2269
worker_thread+0x64c/0x1120 kernel/workqueue.c:2415
kthread+0x3af/0x4a0 kernel/kthread.c:292
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
The buggy address belongs to the object at ffff888093021000
which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 128 bytes inside of
1024-byte region [ffff888093021000, ffff888093021400)
The buggy address is located 128 bytes inside of
The buggy address belongs to the page:
page:00000000fb0f011a refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x93021
flags: 0xfffe0000000200(slab)
raw: 00fffe0000000200 ffffea0002992c48 ffffea000249fd08 ffff8880aa040700
raw: 0000000000000000 ffff888093021000 0000000100000002 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff888093020f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
Memory state around the buggy address:
ffff888093021000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888093021080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888093021100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888093021180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
syzbot
Sep 30, 2020, 3:03:05 PM9/30/20
to dhow...@redhat.com, linu...@lists.infradead.org, linux-...@vger.kernel.org, linux-...@vger.kernel.org, syzkall...@googlegroups.com, vi...@zeniv.linux.org.uk
syzbot has bisected this issue to:
commit 13fcc6837049f1bd76d57e9abc217a91fdbad764
Author: David Howells <dhow...@redhat.com>
Date: Thu Nov 1 23:07:27 2018 +0000
afs: Add fs_context support
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13ea9ea7900000
start commit: 49e7e3e9 Add linux-next specific files for 20200929
git tree: linux-next
final oops: https://syzkaller.appspot.com/x/report.txt?x=101a9ea7900000
console output: https://syzkaller.appspot.com/x/log.txt?x=17ea9ea7900000
Fixes: 13fcc6837049 ("afs: Add fs_context support")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
commit 13fcc6837049f1bd76d57e9abc217a91fdbad764
Author: David Howells <dhow...@redhat.com>
Date: Thu Nov 1 23:07:27 2018 +0000
afs: Add fs_context support
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13ea9ea7900000
start commit: 49e7e3e9 Add linux-next specific files for 20200929
git tree: linux-next
final oops: https://syzkaller.appspot.com/x/report.txt?x=101a9ea7900000
console output: https://syzkaller.appspot.com/x/log.txt?x=17ea9ea7900000
kernel config: https://syzkaller.appspot.com/x/.config?x=b823d07e241e7aee
dashboard link: https://syzkaller.appspot.com/bug?extid=a5e4946b04d6ca8fa5f3
dashboard link: https://syzkaller.appspot.com/bug?extid=a5e4946b04d6ca8fa5f3
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=173c446d900000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14ba5be3900000
Reported-by: syzbot+a5e494...@syzkaller.appspotmail.com
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14ba5be3900000
Fixes: 13fcc6837049 ("afs: Add fs_context support")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
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