Hello,
syzbot found the following crash on:
HEAD commit: ff4fb475cea8 Merge branch 'btf-uapi-cleanups'
git tree: bpf-next
console output: https://syzkaller.appspot.com/x/log.txt?x=12b3d577800000
kernel config: https://syzkaller.appspot.com/x/.config?x=b632d8e2c2ab2c1
dashboard link: https://syzkaller.appspot.com/bug?extid=31025a5f3f7650081204
compiler: gcc (GCC) 8.0.1 20180413 (experimental)
syzkaller repro:https://syzkaller.appspot.com/x/repro.syz?x=109a2f37800000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=171a727b800000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: [email protected]
==================================================================
BUG: KASAN: use-after-free in cmpxchg_size
include/asm-generic/atomic-instrumented.h:355 [inline]
BUG: KASAN: use-after-free in bpf_tcp_close+0x6f5/0xf80
kernel/bpf/sockmap.c:265
Write of size 8 at addr ffff8801ca277680 by task syz-executor749/9723
CPU: 0 PID: 9723 Comm: syz-executor749 Not tainted 4.17.0-rc4+ #19
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1b9/0x294 lib/dump_stack.c:113
print_address_description+0x6c/0x20b mm/kasan/report.c:256
kasan_report_error mm/kasan/report.c:354 [inline]
kasan_report.cold.7+0x242/0x2fe mm/kasan/report.c:412
check_memory_region_inline mm/kasan/kasan.c:260 [inline]
check_memory_region+0x13e/0x1b0 mm/kasan/kasan.c:267
kasan_check_write+0x14/0x20 mm/kasan/kasan.c:278
cmpxchg_size include/asm-generic/atomic-instrumented.h:355 [inline]
bpf_tcp_close+0x6f5/0xf80 kernel/bpf/sockmap.c:265
inet_release+0x104/0x1f0 net/ipv4/af_inet.c:427
inet6_release+0x50/0x70 net/ipv6/af_inet6.c:459
sock_release+0x96/0x1b0 net/socket.c:594
sock_close+0x16/0x20 net/socket.c:1149
__fput+0x34d/0x890 fs/file_table.c:209
____fput+0x15/0x20 fs/file_table.c:243
task_work_run+0x1e4/0x290 kernel/task_work.c:113
exit_task_work include/linux/task_work.h:22 [inline]
do_exit+0x1aee/0x2730 kernel/exit.c:865
do_group_exit+0x16f/0x430 kernel/exit.c:968
__do_sys_exit_group kernel/exit.c:979 [inline]
__se_sys_exit_group kernel/exit.c:977 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:977
do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x440a59
RSP: 002b:00007ffdadf92488 EFLAGS: 00000206 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440a59
RDX: 0000000000440a59 RSI: 0000000000000020 RDI: 0000000000000000
RBP: 0000000000000000 R08: 00000000004002c8 R09: 0000000000401ea0
R10: 00000000004002c8 R11: 0000000000000206 R12: 000000000001b5ac
R13: 0000000000401ea0 R14: 0000000000000000 R15: 0000000000000000
Allocated by task 9723:
save_stack+0x43/0xd0 mm/kasan/kasan.c:448
set_track mm/kasan/kasan.c:460 [inline]
kasan_kmalloc+0xc4/0xe0 mm/kasan/kasan.c:553
__do_kmalloc_node mm/slab.c:3682 [inline]
__kmalloc_node+0x47/0x70 mm/slab.c:3689
kmalloc_node include/linux/slab.h:554 [inline]
bpf_map_area_alloc+0x3f/0x90 kernel/bpf/syscall.c:144
sock_map_alloc+0x376/0x410 kernel/bpf/sockmap.c:1555
find_and_alloc_map kernel/bpf/syscall.c:126 [inline]
map_create+0x393/0x1010 kernel/bpf/syscall.c:448
__do_sys_bpf kernel/bpf/syscall.c:2128 [inline]
__se_sys_bpf kernel/bpf/syscall.c:2105 [inline]
__x64_sys_bpf+0x300/0x4f0 kernel/bpf/syscall.c:2105
do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
entry_SYSCALL_64_after_hwframe+0x49/0xbe
Freed by task 4521:
save_stack+0x43/0xd0 mm/kasan/kasan.c:448
set_track mm/kasan/kasan.c:460 [inline]
__kasan_slab_free+0x11a/0x170 mm/kasan/kasan.c:521
kasan_slab_free+0xe/0x10 mm/kasan/kasan.c:528
__cache_free mm/slab.c:3498 [inline]
kfree+0xd9/0x260 mm/slab.c:3813
kvfree+0x61/0x70 mm/util.c:440
bpf_map_area_free+0x15/0x20 kernel/bpf/syscall.c:155
sock_map_remove_complete kernel/bpf/sockmap.c:1443 [inline]
sock_map_free+0x408/0x540 kernel/bpf/sockmap.c:1619
bpf_map_free_deferred+0xba/0xf0 kernel/bpf/syscall.c:259
process_one_work+0xc1e/0x1b50 kernel/workqueue.c:2145
worker_thread+0x1cc/0x1440 kernel/workqueue.c:2279
kthread+0x345/0x410 kernel/kthread.c:238
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412
The buggy address belongs to the object at ffff8801ca277680
which belongs to the cache kmalloc-1024 of size 1024
The buggy address is located 0 bytes inside of
1024-byte region [ffff8801ca277680, ffff8801ca277a80)
The buggy address belongs to the page:
page:ffffea0007289d80 count:1 mapcount:0 mapping:ffff8801ca276000 index:0x0
compound_mapcount: 0
flags: 0x2fffc0000008100(slab|head)
raw: 02fffc0000008100 ffff8801ca276000 0000000000000000 0000000100000007
raw: ffffea0006d12b20 ffffea000763bba0 ffff8801da800ac0 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff8801ca277580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff8801ca277600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
> ffff8801ca277680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8801ca277700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8801ca277780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
---
This bug 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 [email protected].
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#bug-status-tracking for how to communicate with
syzbot.
syzbot can test patches for this bug, for details see:
https://goo.gl/tpsmEJ#testing-patches
[ +John ]
On 05/27/2018 10:06 PM, syzbot wrote:
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit: ff4fb475cea8 Merge branch 'btf-uapi-cleanups'
> git tree: bpf-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=12b3d577800000
> kernel config: https://syzkaller.appspot.com/x/.config?x=b632d8e2c2ab2c1
> dashboard link: https://syzkaller.appspot.com/bug?extid=31025a5f3f7650081204
> compiler: gcc (GCC) 8.0.1 20180413 (experimental)
> syzkaller repro:https://syzkaller.appspot.com/x/repro.syz?x=109a2f37800000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=171a727b800000
>
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: [email protected]
Should be fixed by: https://patchwork.ozlabs.org/patch/920695/
> ==================================================================
> BUG: KASAN: use-after-free in cmpxchg_size include/asm-generic/atomic-instrumented.h:355 [inline]
> BUG: KASAN: use-after-free in bpf_tcp_close+0x6f5/0xf80 kernel/bpf/sockmap.c:265
> Write of size 8 at addr ffff8801ca277680 by task syz-executor749/9723
>
> CPU: 0 PID: 9723 Comm: syz-executor749 Not tainted 4.17.0-rc4+ #19
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
> Call Trace:
> __dump_stack lib/dump_stack.c:77 [inline]
> dump_stack+0x1b9/0x294 lib/dump_stack.c:113
> print_address_description+0x6c/0x20b mm/kasan/report.c:256
> kasan_report_error mm/kasan/report.c:354 [inline]
> kasan_report.cold.7+0x242/0x2fe mm/kasan/report.c:412
> check_memory_region_inline mm/kasan/kasan.c:260 [inline]
> check_memory_region+0x13e/0x1b0 mm/kasan/kasan.c:267
> kasan_check_write+0x14/0x20 mm/kasan/kasan.c:278
> cmpxchg_size include/asm-generic/atomic-instrumented.h:355 [inline]
> bpf_tcp_close+0x6f5/0xf80 kernel/bpf/sockmap.c:265
> inet_release+0x104/0x1f0 net/ipv4/af_inet.c:427
> inet6_release+0x50/0x70 net/ipv6/af_inet6.c:459
> sock_release+0x96/0x1b0 net/socket.c:594
> sock_close+0x16/0x20 net/socket.c:1149
> __fput+0x34d/0x890 fs/file_table.c:209
> ____fput+0x15/0x20 fs/file_table.c:243
> task_work_run+0x1e4/0x290 kernel/task_work.c:113
> exit_task_work include/linux/task_work.h:22 [inline]
> do_exit+0x1aee/0x2730 kernel/exit.c:865
> do_group_exit+0x16f/0x430 kernel/exit.c:968
> __do_sys_exit_group kernel/exit.c:979 [inline]
> __se_sys_exit_group kernel/exit.c:977 [inline]
> __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:977
> do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
> entry_SYSCALL_64_after_hwframe+0x49/0xbe
> RIP: 0033:0x440a59
> RSP: 002b:00007ffdadf92488 EFLAGS: 00000206 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440a59
> RDX: 0000000000440a59 RSI: 0000000000000020 RDI: 0000000000000000
> RBP: 0000000000000000 R08: 00000000004002c8 R09: 0000000000401ea0
> R10: 00000000004002c8 R11: 0000000000000206 R12: 000000000001b5ac
> R13: 0000000000401ea0 R14: 0000000000000000 R15: 0000000000000000
>
> Allocated by task 9723:
> save_stack+0x43/0xd0 mm/kasan/kasan.c:448
> set_track mm/kasan/kasan.c:460 [inline]
> kasan_kmalloc+0xc4/0xe0 mm/kasan/kasan.c:553
> __do_kmalloc_node mm/slab.c:3682 [inline]
> __kmalloc_node+0x47/0x70 mm/slab.c:3689
> kmalloc_node include/linux/slab.h:554 [inline]
> bpf_map_area_alloc+0x3f/0x90 kernel/bpf/syscall.c:144
> sock_map_alloc+0x376/0x410 kernel/bpf/sockmap.c:1555
> find_and_alloc_map kernel/bpf/syscall.c:126 [inline]
> map_create+0x393/0x1010 kernel/bpf/syscall.c:448
> __do_sys_bpf kernel/bpf/syscall.c:2128 [inline]
> __se_sys_bpf kernel/bpf/syscall.c:2105 [inline]
> __x64_sys_bpf+0x300/0x4f0 kernel/bpf/syscall.c:2105
> do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
> entry_SYSCALL_64_after_hwframe+0x49/0xbe
>
> Freed by task 4521:
> save_stack+0x43/0xd0 mm/kasan/kasan.c:448
> set_track mm/kasan/kasan.c:460 [inline]
> __kasan_slab_free+0x11a/0x170 mm/kasan/kasan.c:521
> kasan_slab_free+0xe/0x10 mm/kasan/kasan.c:528
> __cache_free mm/slab.c:3498 [inline]
> kfree+0xd9/0x260 mm/slab.c:3813
> kvfree+0x61/0x70 mm/util.c:440
> bpf_map_area_free+0x15/0x20 kernel/bpf/syscall.c:155
> sock_map_remove_complete kernel/bpf/sockmap.c:1443 [inline]
> sock_map_free+0x408/0x540 kernel/bpf/sockmap.c:1619
> bpf_map_free_deferred+0xba/0xf0 kernel/bpf/syscall.c:259
> process_one_work+0xc1e/0x1b50 kernel/workqueue.c:2145
> worker_thread+0x1cc/0x1440 kernel/workqueue.c:2279
> kthread+0x345/0x410 kernel/kthread.c:238
> ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412
>
> The buggy address belongs to the object at ffff8801ca277680
> which belongs to the cache kmalloc-1024 of size 1024
> The buggy address is located 0 bytes inside of
> 1024-byte region [ffff8801ca277680, ffff8801ca277a80)
> The buggy address belongs to the page:
> page:ffffea0007289d80 count:1 mapcount:0 mapping:ffff8801ca276000 index:0x0 compound_mapcount: 0
> flags: 0x2fffc0000008100(slab|head)
> raw: 02fffc0000008100 ffff8801ca276000 0000000000000000 0000000100000007
> raw: ffffea0006d12b20 ffffea000763bba0 ffff8801da800ac0 0000000000000000
> page dumped because: kasan: bad access detected
>
> Memory state around the buggy address:
> ffff8801ca277580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
> ffff8801ca277600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>> ffff8801ca277680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
> ^
> ffff8801ca277700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
> ffff8801ca277780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
> ==================================================================
>
>
> ---
> This bug 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 [email protected].
>
> syzbot will keep track of this bug report. See:
> https://goo.gl/tpsmEJ#bug-status-tracking for how to communicate with syzbot.
> syzbot can test patches for this bug, for details see:
> https://goo.gl/tpsmEJ#testing-patches
On Mon, May 28, 2018 at 12:15 AM, Daniel Borkmann <[email protected]> wrote:
> [ +John ]
>
> On 05/27/2018 10:06 PM, syzbot wrote:
>> Hello,
>>
>> syzbot found the following crash on:
>>
>> HEAD commit: ff4fb475cea8 Merge branch 'btf-uapi-cleanups'
>> git tree: bpf-next
>> console output: https://syzkaller.appspot.com/x/log.txt?x=12b3d577800000
>> kernel config: https://syzkaller.appspot.com/x/.config?x=b632d8e2c2ab2c1
>> dashboard link: https://syzkaller.appspot.com/bug?extid=31025a5f3f7650081204
>> compiler: gcc (GCC) 8.0.1 20180413 (experimental)
>> syzkaller repro:https://syzkaller.appspot.com/x/repro.syz?x=109a2f37800000
>> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=171a727b800000
>>
>> IMPORTANT: if you fix the bug, please add the following tag to the commit:
>> Reported-by: [email protected]
>
> Should be fixed by: https://patchwork.ozlabs.org/patch/920695/
#syz fix: bpf: sockhash fix race with bpf_tcp_close and map delete
>> ==================================================================
>> BUG: KASAN: use-after-free in cmpxchg_size include/asm-generic/atomic-instrumented.h:355 [inline]
>> BUG: KASAN: use-after-free in bpf_tcp_close+0x6f5/0xf80 kernel/bpf/sockmap.c:265
>> Write of size 8 at addr ffff8801ca277680 by task syz-executor749/9723
>>
>> CPU: 0 PID: 9723 Comm: syz-executor749 Not tainted 4.17.0-rc4+ #19
>> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
>> Call Trace:
>> __dump_stack lib/dump_stack.c:77 [inline]
>> dump_stack+0x1b9/0x294 lib/dump_stack.c:113
>> print_address_description+0x6c/0x20b mm/kasan/report.c:256
>> kasan_report_error mm/kasan/report.c:354 [inline]
>> kasan_report.cold.7+0x242/0x2fe mm/kasan/report.c:412
>> check_memory_region_inline mm/kasan/kasan.c:260 [inline]
>> check_memory_region+0x13e/0x1b0 mm/kasan/kasan.c:267
>> kasan_check_write+0x14/0x20 mm/kasan/kasan.c:278
>> cmpxchg_size include/asm-generic/atomic-instrumented.h:355 [inline]
>> bpf_tcp_close+0x6f5/0xf80 kernel/bpf/sockmap.c:265
>> inet_release+0x104/0x1f0 net/ipv4/af_inet.c:427
>> inet6_release+0x50/0x70 net/ipv6/af_inet6.c:459
>> sock_release+0x96/0x1b0 net/socket.c:594
>> sock_close+0x16/0x20 net/socket.c:1149
>> __fput+0x34d/0x890 fs/file_table.c:209
>> ____fput+0x15/0x20 fs/file_table.c:243
>> task_work_run+0x1e4/0x290 kernel/task_work.c:113
>> exit_task_work include/linux/task_work.h:22 [inline]
>> do_exit+0x1aee/0x2730 kernel/exit.c:865
>> do_group_exit+0x16f/0x430 kernel/exit.c:968
>> __do_sys_exit_group kernel/exit.c:979 [inline]
>> __se_sys_exit_group kernel/exit.c:977 [inline]
>> __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:977
>> do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
>> entry_SYSCALL_64_after_hwframe+0x49/0xbe
>> RIP: 0033:0x440a59
>> RSP: 002b:00007ffdadf92488 EFLAGS: 00000206 ORIG_RAX: 00000000000000e7
>> RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440a59
>> RDX: 0000000000440a59 RSI: 0000000000000020 RDI: 0000000000000000
>> RBP: 0000000000000000 R08: 00000000004002c8 R09: 0000000000401ea0
>> R10: 00000000004002c8 R11: 0000000000000206 R12: 000000000001b5ac
>> R13: 0000000000401ea0 R14: 0000000000000000 R15: 0000000000000000
>>
>> Allocated by task 9723:
>> save_stack+0x43/0xd0 mm/kasan/kasan.c:448
>> set_track mm/kasan/kasan.c:460 [inline]
>> kasan_kmalloc+0xc4/0xe0 mm/kasan/kasan.c:553
>> __do_kmalloc_node mm/slab.c:3682 [inline]
>> __kmalloc_node+0x47/0x70 mm/slab.c:3689
>> kmalloc_node include/linux/slab.h:554 [inline]
>> bpf_map_area_alloc+0x3f/0x90 kernel/bpf/syscall.c:144
>> sock_map_alloc+0x376/0x410 kernel/bpf/sockmap.c:1555
>> find_and_alloc_map kernel/bpf/syscall.c:126 [inline]
>> map_create+0x393/0x1010 kernel/bpf/syscall.c:448
>> __do_sys_bpf kernel/bpf/syscall.c:2128 [inline]
>> __se_sys_bpf kernel/bpf/syscall.c:2105 [inline]
>> __x64_sys_bpf+0x300/0x4f0 kernel/bpf/syscall.c:2105
>> do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
>> entry_SYSCALL_64_after_hwframe+0x49/0xbe
>>
>> Freed by task 4521:
>> save_stack+0x43/0xd0 mm/kasan/kasan.c:448
>> set_track mm/kasan/kasan.c:460 [inline]
>> __kasan_slab_free+0x11a/0x170 mm/kasan/kasan.c:521
>> kasan_slab_free+0xe/0x10 mm/kasan/kasan.c:528
>> __cache_free mm/slab.c:3498 [inline]
>> kfree+0xd9/0x260 mm/slab.c:3813
>> kvfree+0x61/0x70 mm/util.c:440
>> bpf_map_area_free+0x15/0x20 kernel/bpf/syscall.c:155
>> sock_map_remove_complete kernel/bpf/sockmap.c:1443 [inline]
>> sock_map_free+0x408/0x540 kernel/bpf/sockmap.c:1619
>> bpf_map_free_deferred+0xba/0xf0 kernel/bpf/syscall.c:259
>> process_one_work+0xc1e/0x1b50 kernel/workqueue.c:2145
>> worker_thread+0x1cc/0x1440 kernel/workqueue.c:2279
>> kthread+0x345/0x410 kernel/kthread.c:238
>> ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412
>>
>> The buggy address belongs to the object at ffff8801ca277680
>> which belongs to the cache kmalloc-1024 of size 1024
>> The buggy address is located 0 bytes inside of
>> 1024-byte region [ffff8801ca277680, ffff8801ca277a80)
>> The buggy address belongs to the page:
>> page:ffffea0007289d80 count:1 mapcount:0 mapping:ffff8801ca276000 index:0x0 compound_mapcount: 0
>> flags: 0x2fffc0000008100(slab|head)
>> raw: 02fffc0000008100 ffff8801ca276000 0000000000000000 0000000100000007
>> raw: ffffea0006d12b20 ffffea000763bba0 ffff8801da800ac0 0000000000000000
>> page dumped because: kasan: bad access detected
>>
>> Memory state around the buggy address:
>> ffff8801ca277580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>> ffff8801ca277600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>>> ffff8801ca277680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>> ^
>> ffff8801ca277700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>> ffff8801ca277780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>> ==================================================================
>>
>>
>> ---
>> This bug 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 [email protected].
>>
>> syzbot will keep track of this bug report. See:
>> https://goo.gl/tpsmEJ#bug-status-tracking for how to communicate with syzbot.
>> syzbot can test patches for this bug, for details see:
>> https://goo.gl/tpsmEJ#testing-patches
>
> --
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> For more options, visit https://groups.google.com/d/optout.
On 06/07/2018 09:58 AM, Dmitry Vyukov wrote:
> On Mon, May 28, 2018 at 12:15 AM, Daniel Borkmann <[email protected]> wrote:
>> [ +John ]
>>
>> On 05/27/2018 10:06 PM, syzbot wrote:
>>> Hello,
>>>
>>> syzbot found the following crash on:
>>>
>>> HEAD commit: ff4fb475cea8 Merge branch 'btf-uapi-cleanups'
>>> git tree: bpf-next
>>> console output: https://syzkaller.appspot.com/x/log.txt?x=12b3d577800000
>>> kernel config: https://syzkaller.appspot.com/x/.config?x=b632d8e2c2ab2c1
>>> dashboard link: https://syzkaller.appspot.com/bug?extid=31025a5f3f7650081204
>>> compiler: gcc (GCC) 8.0.1 20180413 (experimental)
>>> syzkaller repro:https://syzkaller.appspot.com/x/repro.syz?x=109a2f37800000
>>> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=171a727b800000
>>>
>>> IMPORTANT: if you fix the bug, please add the following tag to the commit:
>>> Reported-by: [email protected]
>>
>> Should be fixed by: https://patchwork.ozlabs.org/patch/920695/
>
> #syz fix: bpf: sockhash fix race with bpf_tcp_close and map delete
>
Same here 'bpf: sockhash fix race with bpf_tcp_close and map delete"
was dropped and a new fix will be posted shortly.
Thanks!
John