From: syzbot <syzbot+506c8a2a115201881d45@syzkaller.appspotmail.com>
To: akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, mike.kravetz@oracle.com,
syzkaller-bugs@googlegroups.com
Subject: possible deadlock in sk_clone_lock
Date: Fri, 26 Feb 2021 13:08:20 -0800 [thread overview]
Message-ID: <000000000000f1c03b05bc43aadc@google.com> (raw)
Hello,
syzbot found the following issue on:
HEAD commit: 577c2835 Add linux-next specific files for 20210224
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=137cef82d00000
kernel config: https://syzkaller.appspot.com/x/.config?x=e9bb3d369b3bf49
dashboard link: https://syzkaller.appspot.com/bug?extid=506c8a2a115201881d45
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+506c8a2a115201881d45@syzkaller.appspotmail.com
=====================================================
WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected
5.11.0-next-20210224-syzkaller #0 Not tainted
-----------------------------------------------------
syz-executor.3/15411 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire:
ffffffff8c0a0e18 (hugetlb_lock){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:354 [inline]
ffffffff8c0a0e18 (hugetlb_lock){+.+.}-{2:2}, at: __free_huge_page+0x4cd/0xc10 mm/hugetlb.c:1390
and this task is already holding:
ffff88802391c720 (slock-AF_INET){+.-.}-{2:2}, at: spin_lock include/linux/spinlock.h:354 [inline]
ffff88802391c720 (slock-AF_INET){+.-.}-{2:2}, at: __tcp_close+0x6d9/0x1170 net/ipv4/tcp.c:2788
which would create a new lock dependency:
(slock-AF_INET){+.-.}-{2:2} -> (hugetlb_lock){+.+.}-{2:2}
but this new dependency connects a SOFTIRQ-irq-safe lock:
(slock-AF_INET){+.-.}-{2:2}
... which became SOFTIRQ-irq-safe at:
lock_acquire kernel/locking/lockdep.c:5510 [inline]
lock_acquire+0x1ab/0x730 kernel/locking/lockdep.c:5475
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:151
spin_lock include/linux/spinlock.h:354 [inline]
sk_clone_lock+0x296/0x1070 net/core/sock.c:1913
inet_csk_clone_lock+0x21/0x4c0 net/ipv4/inet_connection_sock.c:830
tcp_create_openreq_child+0x30/0x16d0 net/ipv4/tcp_minisocks.c:460
tcp_v4_syn_recv_sock+0x10c/0x1460 net/ipv4/tcp_ipv4.c:1526
tcp_check_req+0x616/0x1860 net/ipv4/tcp_minisocks.c:772
tcp_v4_rcv+0x221a/0x3780 net/ipv4/tcp_ipv4.c:2001
ip_protocol_deliver_rcu+0x5c/0x8a0 net/ipv4/ip_input.c:204
ip_local_deliver_finish+0x20a/0x370 net/ipv4/ip_input.c:231
NF_HOOK include/linux/netfilter.h:301 [inline]
NF_HOOK include/linux/netfilter.h:295 [inline]
ip_local_deliver+0x1b3/0x200 net/ipv4/ip_input.c:252
dst_input include/net/dst.h:458 [inline]
ip_sublist_rcv_finish+0x9a/0x2c0 net/ipv4/ip_input.c:551
ip_list_rcv_finish.constprop.0+0x514/0x6e0 net/ipv4/ip_input.c:601
ip_sublist_rcv net/ipv4/ip_input.c:609 [inline]
ip_list_rcv+0x34e/0x490 net/ipv4/ip_input.c:644
__netif_receive_skb_list_ptype net/core/dev.c:5408 [inline]
__netif_receive_skb_list_core+0x549/0x8e0 net/core/dev.c:5456
__netif_receive_skb_list net/core/dev.c:5508 [inline]
netif_receive_skb_list_internal+0x777/0xd70 net/core/dev.c:5618
gro_normal_list net/core/dev.c:5772 [inline]
gro_normal_list net/core/dev.c:5768 [inline]
napi_complete_done+0x1f1/0x820 net/core/dev.c:6474
virtqueue_napi_complete+0x2c/0xc0 drivers/net/virtio_net.c:334
virtnet_poll+0xae2/0xd90 drivers/net/virtio_net.c:1455
__napi_poll+0xaf/0x440 net/core/dev.c:6892
napi_poll net/core/dev.c:6959 [inline]
net_rx_action+0x801/0xb40 net/core/dev.c:7036
__do_softirq+0x29b/0x9f6 kernel/softirq.c:345
invoke_softirq kernel/softirq.c:221 [inline]
__irq_exit_rcu kernel/softirq.c:422 [inline]
irq_exit_rcu+0x134/0x200 kernel/softirq.c:434
common_interrupt+0xa4/0xd0 arch/x86/kernel/irq.c:240
asm_common_interrupt+0x1e/0x40 arch/x86/include/asm/idtentry.h:623
tomoyo_domain_quota_is_ok+0x2f1/0x550 security/tomoyo/util.c:1093
tomoyo_supervisor+0x2f2/0xf00 security/tomoyo/common.c:2089
tomoyo_audit_path_log security/tomoyo/file.c:168 [inline]
tomoyo_path_permission security/tomoyo/file.c:587 [inline]
tomoyo_path_permission+0x270/0x3a0 security/tomoyo/file.c:573
tomoyo_path_perm+0x39e/0x400 security/tomoyo/file.c:838
tomoyo_path_symlink+0x94/0xe0 security/tomoyo/tomoyo.c:200
security_path_symlink+0xdf/0x150 security/security.c:1119
do_symlinkat+0x123/0x300 fs/namei.c:4201
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xae
to a SOFTIRQ-irq-unsafe lock:
(hugetlb_lock){+.+.}-{2:2}
... which became SOFTIRQ-irq-unsafe at:
...
lock_acquire kernel/locking/lockdep.c:5510 [inline]
lock_acquire+0x1ab/0x730 kernel/locking/lockdep.c:5475
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:151
spin_lock include/linux/spinlock.h:354 [inline]
hugetlb_overcommit_handler+0x260/0x3e0 mm/hugetlb.c:3448
proc_sys_call_handler+0x336/0x610 fs/proc/proc_sysctl.c:591
call_write_iter include/linux/fs.h:1977 [inline]
new_sync_write+0x426/0x650 fs/read_write.c:519
vfs_write+0x796/0xa30 fs/read_write.c:606
ksys_write+0x12d/0x250 fs/read_write.c:659
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xae
other info that might help us debug this:
Possible interrupt unsafe locking scenario:
CPU0 CPU1
---- ----
lock(hugetlb_lock);
local_irq_disable();
lock(slock-AF_INET);
lock(hugetlb_lock);
<Interrupt>
lock(slock-AF_INET);
*** DEADLOCK ***
3 locks held by syz-executor.3/15411:
#0: ffff88802a56a190 (&sb->s_type->i_mutex_key#13){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:775 [inline]
#0: ffff88802a56a190 (&sb->s_type->i_mutex_key#13){+.+.}-{3:3}, at: __sock_release+0x86/0x280 net/socket.c:598
#1: ffff88802391c7a0 (sk_lock-AF_INET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1600 [inline]
#1: ffff88802391c7a0 (sk_lock-AF_INET){+.+.}-{0:0}, at: tcp_close+0x1e/0xc0 net/ipv4/tcp.c:2866
#2: ffff88802391c720 (slock-AF_INET){+.-.}-{2:2}, at: spin_lock include/linux/spinlock.h:354 [inline]
#2: ffff88802391c720 (slock-AF_INET){+.-.}-{2:2}, at: __tcp_close+0x6d9/0x1170 net/ipv4/tcp.c:2788
the dependencies between SOFTIRQ-irq-safe lock and the holding lock:
-> (slock-AF_INET){+.-.}-{2:2} {
HARDIRQ-ON-W at:
lock_acquire kernel/locking/lockdep.c:5510 [inline]
lock_acquire+0x1ab/0x730 kernel/locking/lockdep.c:5475
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline]
_raw_spin_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:175
spin_lock_bh include/linux/spinlock.h:359 [inline]
lock_sock_nested+0x40/0x120 net/core/sock.c:3063
lock_sock include/net/sock.h:1600 [inline]
inet_autobind+0x1a/0x190 net/ipv4/af_inet.c:180
inet_dgram_connect+0x1f5/0x2d0 net/ipv4/af_inet.c:578
__sys_connect_file+0x155/0x1a0 net/socket.c:1837
__sys_connect+0x161/0x190 net/socket.c:1854
__do_sys_connect net/socket.c:1864 [inline]
__se_sys_connect net/socket.c:1861 [inline]
__x64_sys_connect+0x6f/0xb0 net/socket.c:1861
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xae
IN-SOFTIRQ-W at:
lock_acquire kernel/locking/lockdep.c:5510 [inline]
lock_acquire+0x1ab/0x730 kernel/locking/lockdep.c:5475
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:151
spin_lock include/linux/spinlock.h:354 [inline]
sk_clone_lock+0x296/0x1070 net/core/sock.c:1913
inet_csk_clone_lock+0x21/0x4c0 net/ipv4/inet_connection_sock.c:830
tcp_create_openreq_child+0x30/0x16d0 net/ipv4/tcp_minisocks.c:460
tcp_v4_syn_recv_sock+0x10c/0x1460 net/ipv4/tcp_ipv4.c:1526
tcp_check_req+0x616/0x1860 net/ipv4/tcp_minisocks.c:772
tcp_v4_rcv+0x221a/0x3780 net/ipv4/tcp_ipv4.c:2001
ip_protocol_deliver_rcu+0x5c/0x8a0 net/ipv4/ip_input.c:204
ip_local_deliver_finish+0x20a/0x370 net/ipv4/ip_input.c:231
NF_HOOK include/linux/netfilter.h:301 [inline]
NF_HOOK include/linux/netfilter.h:295 [inline]
ip_local_deliver+0x1b3/0x200 net/ipv4/ip_input.c:252
dst_input include/net/dst.h:458 [inline]
ip_sublist_rcv_finish+0x9a/0x2c0 net/ipv4/ip_input.c:551
ip_list_rcv_finish.constprop.0+0x514/0x6e0 net/ipv4/ip_input.c:601
ip_sublist_rcv net/ipv4/ip_input.c:609 [inline]
ip_list_rcv+0x34e/0x490 net/ipv4/ip_input.c:644
__netif_receive_skb_list_ptype net/core/dev.c:5408 [inline]
__netif_receive_skb_list_core+0x549/0x8e0 net/core/dev.c:5456
__netif_receive_skb_list net/core/dev.c:5508 [inline]
netif_receive_skb_list_internal+0x777/0xd70 net/core/dev.c:5618
gro_normal_list net/core/dev.c:5772 [inline]
gro_normal_list net/core/dev.c:5768 [inline]
napi_complete_done+0x1f1/0x820 net/core/dev.c:6474
virtqueue_napi_complete+0x2c/0xc0 drivers/net/virtio_net.c:334
virtnet_poll+0xae2/0xd90 drivers/net/virtio_net.c:1455
__napi_poll+0xaf/0x440 net/core/dev.c:6892
napi_poll net/core/dev.c:6959 [inline]
net_rx_action+0x801/0xb40 net/core/dev.c:7036
__do_softirq+0x29b/0x9f6 kernel/softirq.c:345
invoke_softirq kernel/softirq.c:221 [inline]
__irq_exit_rcu kernel/softirq.c:422 [inline]
irq_exit_rcu+0x134/0x200 kernel/softirq.c:434
common_interrupt+0xa4/0xd0 arch/x86/kernel/irq.c:240
asm_common_interrupt+0x1e/0x40 arch/x86/include/asm/idtentry.h:623
tomoyo_domain_quota_is_ok+0x2f1/0x550 security/tomoyo/util.c:1093
tomoyo_supervisor+0x2f2/0xf00 security/tomoyo/common.c:2089
tomoyo_audit_path_log security/tomoyo/file.c:168 [inline]
tomoyo_path_permission security/tomoyo/file.c:587 [inline]
tomoyo_path_permission+0x270/0x3a0 security/tomoyo/file.c:573
tomoyo_path_perm+0x39e/0x400 security/tomoyo/file.c:838
tomoyo_path_symlink+0x94/0xe0 security/tomoyo/tomoyo.c:200
security_path_symlink+0xdf/0x150 security/security.c:1119
do_symlinkat+0x123/0x300 fs/namei.c:4201
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xae
INITIAL USE at:
lock_acquire kernel/locking/lockdep.c:5510 [inline]
lock_acquire+0x1ab/0x730 kernel/locking/lockdep.c:5475
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline]
_raw_spin_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:175
spin_lock_bh include/linux/spinlock.h:359 [inline]
lock_sock_nested+0x40/0x120 net/core/sock.c:3063
lock_sock include/net/sock.h:1600 [inline]
inet_autobind+0x1a/0x190 net/ipv4/af_inet.c:180
inet_dgram_connect+0x1f5/0x2d0 net/ipv4/af_inet.c:578
__sys_connect_file+0x155/0x1a0 net/socket.c:1837
__sys_connect+0x161/0x190 net/socket.c:1854
__do_sys_connect net/socket.c:1864 [inline]
__se_sys_connect net/socket.c:1861 [inline]
__x64_sys_connect+0x6f/0xb0 net/socket.c:1861
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xae
}
... key at: [<ffffffff901df860>] af_family_slock_keys+0x20/0x300
... acquired at:
lock_acquire kernel/locking/lockdep.c:5510 [inline]
lock_acquire+0x1ab/0x730 kernel/locking/lockdep.c:5475
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:151
spin_lock include/linux/spinlock.h:354 [inline]
__free_huge_page+0x4cd/0xc10 mm/hugetlb.c:1390
free_huge_page+0x31/0xb0 mm/hugetlb.c:1461
__put_page+0xf7/0x3e0 mm/swap.c:126
put_page include/linux/mm.h:1219 [inline]
__skb_frag_unref include/linux/skbuff.h:3085 [inline]
skb_release_data+0x465/0x750 net/core/skbuff.c:666
skb_release_all net/core/skbuff.c:725 [inline]
__kfree_skb+0x46/0x60 net/core/skbuff.c:739
sk_wmem_free_skb include/net/sock.h:1558 [inline]
tcp_rtx_queue_purge net/ipv4/tcp.c:2895 [inline]
tcp_write_queue_purge+0x44c/0x1250 net/ipv4/tcp.c:2908
tcp_v4_destroy_sock+0xf2/0x780 net/ipv4/tcp_ipv4.c:2219
inet_csk_destroy_sock+0x196/0x490 net/ipv4/inet_connection_sock.c:884
__tcp_close+0xd3e/0x1170 net/ipv4/tcp.c:2855
tcp_close+0x29/0xc0 net/ipv4/tcp.c:2867
inet_release+0x12e/0x280 net/ipv4/af_inet.c:431
__sock_release+0xcd/0x280 net/socket.c:599
sock_close+0x18/0x20 net/socket.c:1258
__fput+0x288/0x920 fs/file_table.c:280
task_work_run+0xdd/0x1a0 kernel/task_work.c:140
get_signal+0x1c89/0x2100 kernel/signal.c:2554
arch_do_signal_or_restart+0x2a8/0x1eb0 arch/x86/kernel/signal.c:811
handle_signal_work kernel/entry/common.c:147 [inline]
exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
exit_to_user_mode_prepare+0x148/0x250 kernel/entry/common.c:208
__syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline]
syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:301
entry_SYSCALL_64_after_hwframe+0x44/0xae
the dependencies between the lock to be acquired
and SOFTIRQ-irq-unsafe lock:
-> (hugetlb_lock){+.+.}-{2:2} {
HARDIRQ-ON-W at:
lock_acquire kernel/locking/lockdep.c:5510 [inline]
lock_acquire+0x1ab/0x730 kernel/locking/lockdep.c:5475
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:151
spin_lock include/linux/spinlock.h:354 [inline]
hugetlb_overcommit_handler+0x260/0x3e0 mm/hugetlb.c:3448
proc_sys_call_handler+0x336/0x610 fs/proc/proc_sysctl.c:591
call_write_iter include/linux/fs.h:1977 [inline]
new_sync_write+0x426/0x650 fs/read_write.c:519
vfs_write+0x796/0xa30 fs/read_write.c:606
ksys_write+0x12d/0x250 fs/read_write.c:659
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xae
SOFTIRQ-ON-W at:
lock_acquire kernel/locking/lockdep.c:5510 [inline]
lock_acquire+0x1ab/0x730 kernel/locking/lockdep.c:5475
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:151
spin_lock include/linux/spinlock.h:354 [inline]
hugetlb_overcommit_handler+0x260/0x3e0 mm/hugetlb.c:3448
proc_sys_call_handler+0x336/0x610 fs/proc/proc_sysctl.c:591
call_write_iter include/linux/fs.h:1977 [inline]
new_sync_write+0x426/0x650 fs/read_write.c:519
vfs_write+0x796/0xa30 fs/read_write.c:606
ksys_write+0x12d/0x250 fs/read_write.c:659
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xae
INITIAL USE at:
lock_acquire kernel/locking/lockdep.c:5510 [inline]
lock_acquire+0x1ab/0x730 kernel/locking/lockdep.c:5475
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:151
spin_lock include/linux/spinlock.h:354 [inline]
hugetlb_overcommit_handler+0x260/0x3e0 mm/hugetlb.c:3448
proc_sys_call_handler+0x336/0x610 fs/proc/proc_sysctl.c:591
call_write_iter include/linux/fs.h:1977 [inline]
new_sync_write+0x426/0x650 fs/read_write.c:519
vfs_write+0x796/0xa30 fs/read_write.c:606
ksys_write+0x12d/0x250 fs/read_write.c:659
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xae
}
... key at: [<ffffffff8c0a0e18>] hugetlb_lock+0x18/0x4240
... acquired at:
lock_acquire kernel/locking/lockdep.c:5510 [inline]
lock_acquire+0x1ab/0x730 kernel/locking/lockdep.c:5475
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:151
spin_lock include/linux/spinlock.h:354 [inline]
__free_huge_page+0x4cd/0xc10 mm/hugetlb.c:1390
free_huge_page+0x31/0xb0 mm/hugetlb.c:1461
__put_page+0xf7/0x3e0 mm/swap.c:126
put_page include/linux/mm.h:1219 [inline]
__skb_frag_unref include/linux/skbuff.h:3085 [inline]
skb_release_data+0x465/0x750 net/core/skbuff.c:666
skb_release_all net/core/skbuff.c:725 [inline]
__kfree_skb+0x46/0x60 net/core/skbuff.c:739
sk_wmem_free_skb include/net/sock.h:1558 [inline]
tcp_rtx_queue_purge net/ipv4/tcp.c:2895 [inline]
tcp_write_queue_purge+0x44c/0x1250 net/ipv4/tcp.c:2908
tcp_v4_destroy_sock+0xf2/0x780 net/ipv4/tcp_ipv4.c:2219
inet_csk_destroy_sock+0x196/0x490 net/ipv4/inet_connection_sock.c:884
__tcp_close+0xd3e/0x1170 net/ipv4/tcp.c:2855
tcp_close+0x29/0xc0 net/ipv4/tcp.c:2867
inet_release+0x12e/0x280 net/ipv4/af_inet.c:431
__sock_release+0xcd/0x280 net/socket.c:599
sock_close+0x18/0x20 net/socket.c:1258
__fput+0x288/0x920 fs/file_table.c:280
task_work_run+0xdd/0x1a0 kernel/task_work.c:140
get_signal+0x1c89/0x2100 kernel/signal.c:2554
arch_do_signal_or_restart+0x2a8/0x1eb0 arch/x86/kernel/signal.c:811
handle_signal_work kernel/entry/common.c:147 [inline]
exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
exit_to_user_mode_prepare+0x148/0x250 kernel/entry/common.c:208
__syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline]
syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:301
entry_SYSCALL_64_after_hwframe+0x44/0xae
stack backtrace:
CPU: 0 PID: 15411 Comm: syz-executor.3 Not tainted 5.11.0-next-20210224-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:79 [inline]
dump_stack+0xfa/0x151 lib/dump_stack.c:120
print_bad_irq_dependency kernel/locking/lockdep.c:2460 [inline]
check_irq_usage.cold+0x50d/0x744 kernel/locking/lockdep.c:2689
check_prev_add kernel/locking/lockdep.c:2940 [inline]
check_prevs_add kernel/locking/lockdep.c:3059 [inline]
validate_chain kernel/locking/lockdep.c:3674 [inline]
__lock_acquire+0x2b2c/0x54c0 kernel/locking/lockdep.c:4900
lock_acquire kernel/locking/lockdep.c:5510 [inline]
lock_acquire+0x1ab/0x730 kernel/locking/lockdep.c:5475
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:151
spin_lock include/linux/spinlock.h:354 [inline]
__free_huge_page+0x4cd/0xc10 mm/hugetlb.c:1390
free_huge_page+0x31/0xb0 mm/hugetlb.c:1461
__put_page+0xf7/0x3e0 mm/swap.c:126
put_page include/linux/mm.h:1219 [inline]
__skb_frag_unref include/linux/skbuff.h:3085 [inline]
skb_release_data+0x465/0x750 net/core/skbuff.c:666
skb_release_all net/core/skbuff.c:725 [inline]
__kfree_skb+0x46/0x60 net/core/skbuff.c:739
sk_wmem_free_skb include/net/sock.h:1558 [inline]
tcp_rtx_queue_purge net/ipv4/tcp.c:2895 [inline]
tcp_write_queue_purge+0x44c/0x1250 net/ipv4/tcp.c:2908
tcp_v4_destroy_sock+0xf2/0x780 net/ipv4/tcp_ipv4.c:2219
inet_csk_destroy_sock+0x196/0x490 net/ipv4/inet_connection_sock.c:884
__tcp_close+0xd3e/0x1170 net/ipv4/tcp.c:2855
tcp_close+0x29/0xc0 net/ipv4/tcp.c:2867
inet_release+0x12e/0x280 net/ipv4/af_inet.c:431
__sock_release+0xcd/0x280 net/socket.c:599
sock_close+0x18/0x20 net/socket.c:1258
__fput+0x288/0x920 fs/file_table.c:280
task_work_run+0xdd/0x1a0 kernel/task_work.c:140
get_signal+0x1c89/0x2100 kernel/signal.c:2554
arch_do_signal_or_restart+0x2a8/0x1eb0 arch/x86/kernel/signal.c:811
handle_signal_work kernel/entry/common.c:147 [inline]
exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
exit_to_user_mode_prepare+0x148/0x250 kernel/entry/common.c:208
__syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline]
syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:301
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x465ef9
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fbfc748c188 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: 0000000000005cd9 RBX: 000000000056bf60 RCX: 0000000000465ef9
RDX: ffffffffffffffd0 RSI: 0000000020000140 RDI: 0000000000000003
RBP: 00000000004bcd1c R08: 0000000000000000 R09: ffffffffffffff36
R10: 000000000401c005 R11: 0000000000000246 R12: 000000000056bf60
R13: 00007ffde63b79bf R14: 00007fbfc748c300 R15: 0000000000022000
---
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.
next reply other threads:[~2021-02-26 21:08 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-26 21:08 syzbot [this message]
2021-02-26 22:44 ` possible deadlock in sk_clone_lock Shakeel Butt
2021-02-26 23:14 ` Mike Kravetz
2021-02-27 0:00 ` Shakeel Butt
2021-03-01 12:11 ` Michal Hocko
2021-03-01 15:10 ` Shakeel Butt
2021-03-01 15:57 ` Michal Hocko
2021-03-01 16:39 ` Shakeel Butt
2021-03-01 17:23 ` Michal Hocko
2021-03-02 1:16 ` Mike Kravetz
2021-03-02 9:44 ` Michal Hocko
2021-03-02 14:11 ` Shakeel Butt
2021-03-02 14:29 ` Michal Hocko
2021-03-02 21:19 ` Mike Kravetz
2021-03-03 3:59 ` Shakeel Butt
2021-03-05 9:09 ` Michal Hocko
2021-03-03 8:03 ` Michal Hocko
2021-03-03 17:59 ` Paul E. McKenney
2021-03-04 9:58 ` Michal Hocko
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=000000000000f1c03b05bc43aadc@google.com \
--to=syzbot+506c8a2a115201881d45@syzkaller.appspotmail.com \
--cc=akpm@linux-foundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mike.kravetz@oracle.com \
--cc=syzkaller-bugs@googlegroups.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
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.