INFO: task syz-executor.1:5907 can't die for more than 143 seconds.
task:syz-executor.1 state:D stack:25200 pid: 5907 ppid: 6895 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:3772 [inline]
__schedule+0xec5/0x2200 kernel/sched/core.c:4521
schedule+0xcf/0x270 kernel/sched/core.c:4599
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:4658
__mutex_lock_common kernel/locking/mutex.c:1033 [inline]
__mutex_lock+0x3e2/0x10e0 kernel/locking/mutex.c:1103
tcf_action_init_1+0x747/0x990 net/sched/act_api.c:966
tcf_action_init+0x265/0x4b0 net/sched/act_api.c:1041
tcf_action_add+0xd9/0x360 net/sched/act_api.c:1454
tc_ctl_action+0x33a/0x440 net/sched/act_api.c:1507
rtnetlink_rcv_msg+0x44e/0xad0 net/core/rtnetlink.c:5563
netlink_rcv_skb+0x15a/0x430 net/netlink/af_netlink.c:2489
netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline]
netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1330
netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1919
sock_sendmsg_nosec net/socket.c:651 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:671
____sys_sendmsg+0x6e8/0x810 net/socket.c:2362
___sys_sendmsg+0xf3/0x170 net/socket.c:2416
__sys_sendmsg+0xe5/0x1b0 net/socket.c:2449
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45dea9
Code: Bad RIP value.
RSP: 002b:00007f2595e8bc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000002e600 RCX: 000000000045dea9
RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000003
RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c
R13: 00007fff4507fcef R14: 00007f2595e8c9c0 R15: 000000000118bf2c
INFO: task syz-executor.1:5907 blocked for more than 144 seconds.
Not tainted 5.9.0-rc7-next-20201002-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:25200 pid: 5907 ppid: 6895 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:3772 [inline]
__schedule+0xec5/0x2200 kernel/sched/core.c:4521
schedule+0xcf/0x270 kernel/sched/core.c:4599
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:4658
__mutex_lock_common kernel/locking/mutex.c:1033 [inline]
__mutex_lock+0x3e2/0x10e0 kernel/locking/mutex.c:1103
tcf_action_init_1+0x747/0x990 net/sched/act_api.c:966
tcf_action_init+0x265/0x4b0 net/sched/act_api.c:1041
tcf_action_add+0xd9/0x360 net/sched/act_api.c:1454
tc_ctl_action+0x33a/0x440 net/sched/act_api.c:1507
rtnetlink_rcv_msg+0x44e/0xad0 net/core/rtnetlink.c:5563
netlink_rcv_skb+0x15a/0x430 net/netlink/af_netlink.c:2489
netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline]
netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1330
netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1919
sock_sendmsg_nosec net/socket.c:651 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:671
____sys_sendmsg+0x6e8/0x810 net/socket.c:2362
___sys_sendmsg+0xf3/0x170 net/socket.c:2416
__sys_sendmsg+0xe5/0x1b0 net/socket.c:2449
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45dea9
Code: Bad RIP value.
RSP: 002b:00007f2595e8bc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000002e600 RCX: 000000000045dea9
RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000003
RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c
R13: 00007fff4507fcef R14: 00007f2595e8c9c0 R15: 000000000118bf2c
INFO: task syz-executor.1:5917 can't die for more than 145 seconds.
task:syz-executor.1 state:R running task stack:25272 pid: 5917 ppid: 6895 flags:0x00004006
Call Trace:
INFO: task syz-executor.1:5941 can't die for more than 145 seconds.
task:syz-executor.1 state:D stack:28224 pid: 5941 ppid: 6895 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:3772 [inline]
__schedule+0xec5/0x2200 kernel/sched/core.c:4521
schedule+0xcf/0x270 kernel/sched/core.c:4599
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:4658
__mutex_lock_common kernel/locking/mutex.c:1033 [inline]
__mutex_lock+0x3e2/0x10e0 kernel/locking/mutex.c:1103
rtnl_lock net/core/rtnetlink.c:72 [inline]
rtnetlink_rcv_msg+0x3f9/0xad0 net/core/rtnetlink.c:5560
netlink_rcv_skb+0x15a/0x430 net/netlink/af_netlink.c:2489
netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline]
netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1330
netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1919
sock_sendmsg_nosec net/socket.c:651 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:671
____sys_sendmsg+0x6e8/0x810 net/socket.c:2362
___sys_sendmsg+0xf3/0x170 net/socket.c:2416
__sys_sendmsg+0xe5/0x1b0 net/socket.c:2449
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45dea9
Code: Bad RIP value.
RSP: 002b:00007f2595e49c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000002e600 RCX: 000000000045dea9
RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000003
RBP: 000000000118c0b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118c07c
R13: 00007fff4507fcef R14: 00007f2595e4a9c0 R15: 000000000118c07c
INFO: task syz-executor.1:5941 blocked for more than 146 seconds.
Not tainted 5.9.0-rc7-next-20201002-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:28224 pid: 5941 ppid: 6895 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:3772 [inline]
__schedule+0xec5/0x2200 kernel/sched/core.c:4521
schedule+0xcf/0x270 kernel/sched/core.c:4599
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:4658
__mutex_lock_common kernel/locking/mutex.c:1033 [inline]
__mutex_lock+0x3e2/0x10e0 kernel/locking/mutex.c:1103
rtnl_lock net/core/rtnetlink.c:72 [inline]
rtnetlink_rcv_msg+0x3f9/0xad0 net/core/rtnetlink.c:5560
netlink_rcv_skb+0x15a/0x430 net/netlink/af_netlink.c:2489
netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline]
netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1330
netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1919
sock_sendmsg_nosec net/socket.c:651 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:671
____sys_sendmsg+0x6e8/0x810 net/socket.c:2362
___sys_sendmsg+0xf3/0x170 net/socket.c:2416
__sys_sendmsg+0xe5/0x1b0 net/socket.c:2449
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45dea9
Code: Bad RIP value.
RSP: 002b:00007f2595e49c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000002e600 RCX: 000000000045dea9
RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000003
RBP: 000000000118c0b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118c07c
R13: 00007fff4507fcef R14: 00007f2595e4a9c0 R15: 000000000118c07c
INFO: task syz-executor.0:5921 can't die for more than 146 seconds.
task:syz-executor.0 state:D stack:28224 pid: 5921 ppid: 6893 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:3772 [inline]
__schedule+0xec5/0x2200 kernel/sched/core.c:4521
schedule+0xcf/0x270 kernel/sched/core.c:4599
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:4658
__mutex_lock_common kernel/locking/mutex.c:1033 [inline]
__mutex_lock+0x3e2/0x10e0 kernel/locking/mutex.c:1103
rtnl_lock net/core/rtnetlink.c:72 [inline]
rtnetlink_rcv_msg+0x3f9/0xad0 net/core/rtnetlink.c:5560
netlink_rcv_skb+0x15a/0x430 net/netlink/af_netlink.c:2489
netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline]
netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1330
netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1919
sock_sendmsg_nosec net/socket.c:651 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:671
____sys_sendmsg+0x6e8/0x810 net/socket.c:2362
___sys_sendmsg+0xf3/0x170 net/socket.c:2416
__sys_sendmsg+0xe5/0x1b0 net/socket.c:2449
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45dea9
Code: Bad RIP value.
RSP: 002b:00007ff083f49c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000002e5c0 RCX: 000000000045dea9
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000005
RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c
R13: 00007ffc963f99df R14: 00007ff083f4a9c0 R15: 000000000118bf2c
INFO: task syz-executor.0:5921 blocked for more than 147 seconds.
Not tainted 5.9.0-rc7-next-20201002-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:28224 pid: 5921 ppid: 6893 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:3772 [inline]
__schedule+0xec5/0x2200 kernel/sched/core.c:4521
schedule+0xcf/0x270 kernel/sched/core.c:4599
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:4658
__mutex_lock_common kernel/locking/mutex.c:1033 [inline]
__mutex_lock+0x3e2/0x10e0 kernel/locking/mutex.c:1103
rtnl_lock net/core/rtnetlink.c:72 [inline]
rtnetlink_rcv_msg+0x3f9/0xad0 net/core/rtnetlink.c:5560
netlink_rcv_skb+0x15a/0x430 net/netlink/af_netlink.c:2489
netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline]
netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1330
netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1919
sock_sendmsg_nosec net/socket.c:651 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:671
____sys_sendmsg+0x6e8/0x810 net/socket.c:2362
___sys_sendmsg+0xf3/0x170 net/socket.c:2416
__sys_sendmsg+0xe5/0x1b0 net/socket.c:2449
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45dea9
Code: Bad RIP value.
RSP: 002b:00007ff083f49c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000002e5c0 RCX: 000000000045dea9
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000005
RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c
R13: 00007ffc963f99df R14: 00007ff083f4a9c0 R15: 000000000118bf2c
INFO: task syz-executor.4:5944 can't die for more than 148 seconds.
task:syz-executor.4 state:D stack:27976 pid: 5944 ppid: 6901 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:3772 [inline]
__schedule+0xec5/0x2200 kernel/sched/core.c:4521
schedule+0xcf/0x270 kernel/sched/core.c:4599
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:4658
__mutex_lock_common kernel/locking/mutex.c:1033 [inline]
__mutex_lock+0x3e2/0x10e0 kernel/locking/mutex.c:1103
sock_do_ioctl+0x1f2/0x2d0 net/socket.c:1060
sock_ioctl+0x3d5/0x770 net/socket.c:1198
vfs_ioctl fs/ioctl.c:48 [inline]
__do_sys_ioctl fs/ioctl.c:753 [inline]
__se_sys_ioctl fs/ioctl.c:739 [inline]
__x64_sys_ioctl+0x193/0x200 fs/ioctl.c:739
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45dea9
Code: Bad RIP value.
RSP: 002b:00007fca49307c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000013180 RCX: 000000000045dea9
RDX: 0000000000400200 RSI: 0000000000008912 RDI: 0000000000000005
RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c
R13: 00007ffcdf0c7abf R14: 00007fca493089c0 R15: 000000000118bf2c
INFO: task syz-executor.4:5944 blocked for more than 148 seconds.
Not tainted 5.9.0-rc7-next-20201002-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:27976 pid: 5944 ppid: 6901 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:3772 [inline]
__schedule+0xec5/0x2200 kernel/sched/core.c:4521
schedule+0xcf/0x270 kernel/sched/core.c:4599
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:4658
__mutex_lock_common kernel/locking/mutex.c:1033 [inline]
__mutex_lock+0x3e2/0x10e0 kernel/locking/mutex.c:1103
sock_do_ioctl+0x1f2/0x2d0 net/socket.c:1060
sock_ioctl+0x3d5/0x770 net/socket.c:1198
vfs_ioctl fs/ioctl.c:48 [inline]
__do_sys_ioctl fs/ioctl.c:753 [inline]
__se_sys_ioctl fs/ioctl.c:739 [inline]
__x64_sys_ioctl+0x193/0x200 fs/ioctl.c:739
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45dea9
Code: Bad RIP value.
RSP: 002b:00007fca49307c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000013180 RCX: 000000000045dea9
RDX: 0000000000400200 RSI: 0000000000008912 RDI: 0000000000000005
RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c
R13: 00007ffcdf0c7abf R14: 00007fca493089c0 R15: 000000000118bf2c
Showing all locks held in the system:
2 locks held by kworker/u4:3/101:
1 lock held by khungtaskd/1180:
#0: ffffffff8a554ae0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6242
1 lock held by in:imklog/6567:
#0: ffff888096e463b0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:930
2 locks held by agetty/6795:
#0: ffff888095e22098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:266
#1: ffffc900013302e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x223/0x1a70 drivers/tty/n_tty.c:2156
3 locks held by kworker/0:11/15137:
#0: ffff8880994a2538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff8880994a2538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
#0: ffff8880994a2538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
#0: ffff8880994a2538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline]
#0: ffff8880994a2538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline]
#0: ffff8880994a2538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 kernel/workqueue.c:2240
#1: ffffc90005357da8 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 kernel/workqueue.c:2244
#2: ffffffff8b6d16c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4568
4 locks held by kworker/u4:1/28265:
#0: ffff8880a9012138 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff8880a9012138 ((wq_completion)netns){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
#0: ffff8880a9012138 ((wq_completion)netns){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
#0: ffff8880a9012138 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline]
#0: ffff8880a9012138 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline]
#0: ffff8880a9012138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 kernel/workqueue.c:2240
#1: ffffc9000433fda8 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 kernel/workqueue.c:2244
#2: ffffffff8b6bfbd0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x9b/0xb10 net/core/net_namespace.c:566
#3: ffffffff8b6d16c8 (rtnl_mutex){+.+.}-{3:3}, at: wg_netns_pre_exit+0x15/0x160 drivers/net/wireguard/device.c:401
1 lock held by syz-executor.1/5907:
#0: ffffffff8b6d16c8 (rtnl_mutex){+.+.}-{3:3}, at: tcf_action_init_1+0x747/0x990 net/sched/act_api.c:966
2 locks held by syz-executor.1/5917:
1 lock held by syz-executor.1/5941:
#0: ffffffff8b6d16c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
#0: ffffffff8b6d16c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3f9/0xad0 net/core/rtnetlink.c:5560
1 lock held by syz-executor.0/5921:
#0: ffffffff8b6d16c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
#0: ffffffff8b6d16c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3f9/0xad0 net/core/rtnetlink.c:5560
1 lock held by syz-executor.4/5944:
#0: ffffffff8b6d16c8 (rtnl_mutex){+.+.}-{3:3}, at: sock_do_ioctl+0x1f2/0x2d0 net/socket.c:1060
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 1180 Comm: khungtaskd Not tainted 5.9.0-rc7-next-20201002-syzkaller #0
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+0x198/0x1fb lib/dump_stack.c:118
nmi_cpu_backtrace.cold+0x44/0xd7 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:147 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:253 [inline]
watchdog+0xd89/0xf30 kernel/hung_task.c:339
kthread+0x3af/0x4a0 kernel/kthread.c:292
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 3922 Comm: systemd-journal Not tainted 5.9.0-rc7-next-20201002-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:prandom_u32+0x0/0x340 lib/random32.c:81
Code: fd e9 6e fe ff ff 48 c7 c7 70 ff 3c 8a e8 98 57 fd fd e9 99 fe ff ff 48 c7 c7 68 ff 3c 8a e8 87 57 fd fd eb 99 0f 1f 44 00 00 <41> 54 53 e8 18 6f bb fd bf 01 00 00 00 e8 3e 5a 96 fd e8 b9 e6 8a
RSP: 0018:ffffc90000da8ce0 EFLAGS: 00000002
RAX: 0000000000000001 RBX: ffff8880ae536058 RCX: 1ffffffff176ba3f
RDX: 1ffff1101525a581 RSI: ffff8880ae536058 RDI: ffff8880a92d2c38
RBP: ffff8880a92d2300 R08: 0000000000000001 R09: 0000000000000003
R10: fffff520001b5199 R11: 0000000000000000 R12: ffffed101525a581
R13: ffff8880a92d2c10 R14: 0000000000000001 R15: ffff8880a92d2c38
FS: 00007f05979438c0(0000) GS:ffff8880ae500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0594db8000 CR3: 0000000093a12000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__lock_pin_lock kernel/locking/lockdep.c:5199 [inline]
lock_pin_lock+0x1ee/0x3d0 kernel/locking/lockdep.c:5479
rq_pin_lock kernel/sched/sched.h:1218 [inline]
rq_lock kernel/sched/sched.h:1293 [inline]
scheduler_tick+0xac/0x430 kernel/sched/core.c:3988
update_process_times+0x49/0xa0 kernel/time/timer.c:1717
tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:176
tick_sched_timer+0x1d1/0x2a0 kernel/time/tick-sched.c:1328
__run_hrtimer kernel/time/hrtimer.c:1524 [inline]
__hrtimer_run_queues+0x1ce/0xea0 kernel/time/hrtimer.c:1588
hrtimer_interrupt+0x334/0x940 kernel/time/hrtimer.c:1650
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1080 [inline]
__sysvec_apic_timer_interrupt+0x146/0x540 arch/x86/kernel/apic/apic.c:1097
asm_call_irq_on_stack+0xf/0x20
__run_sysvec_on_irqstack arch/x86/include/asm/irq_stack.h:37 [inline]
run_sysvec_on_irqstack_cond arch/x86/include/asm/irq_stack.h:89 [inline]
sysvec_apic_timer_interrupt+0xb2/0xf0 arch/x86/kernel/apic/apic.c:1091
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:631
RIP: 0010:arch_local_irq_enable arch/x86/include/asm/paravirt.h:663 [inline]
RIP: 0010:devkmsg_poll+0x1c6/0x2d0 kernel/printk/printk.c:877
Code: ff df 48 c1 e8 03 80 3c 10 00 0f 85 eb 00 00 00 48 83 3d d4 75 df 08 00 0f 84 9d 00 00 00 e8 41 bd 17 00 fb 66 0f 1f 44 00 00 35 bd 17 00 44 89 e0 5b 5d 41 5c 41 5d c3 e8 26 bd 17 00 48 89
RSP: 0018:ffffc90003befad8 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000e3f RCX: ffffffff815a9ed7
RDX: ffff8880a92d2300 RSI: ffffffff815d89af RDI: 0000000000000000
RBP: 0000000000001bf0 R08: 0000000000000001 R09: ffffffff8d731a7f
R10: fffffbfff1ae634f R11: 0000000000000000 R12: 0000000000000041
R13: 0000000000000000 R14: ffff888092f0cc70 R15: ffffffff815d87f0
vfs_poll include/linux/poll.h:90 [inline]
ep_item_poll+0x14a/0x3e0 fs/eventpoll.c:885
ep_send_events_proc+0x272/0xc50 fs/eventpoll.c:1742
ep_scan_ready_list+0x256/0x7b0 fs/eventpoll.c:712
ep_send_events fs/eventpoll.c:1786 [inline]
ep_poll fs/eventpoll.c:1942 [inline]
do_epoll_wait+0xb13/0x1080 fs/eventpoll.c:2323
__do_sys_epoll_wait fs/eventpoll.c:2333 [inline]
__se_sys_epoll_wait fs/eventpoll.c:2330 [inline]
__x64_sys_epoll_wait+0x93/0xf0 fs/eventpoll.c:2330
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f0596c0d2e3
Code: 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 83 3d 29 54 2b 00 00 75 13 49 89 ca b8 e8 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 34 c3 48 83 ec 08 e8 0b c2 00 00 48 89 04 24
RSP: 002b:00007ffcd779dfd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8
RAX: ffffffffffffffda RBX: 000055a2186571e0 RCX: 00007f0596c0d2e3
RDX: 0000000000000013 RSI: 00007ffcd779dfe0 RDI: 0000000000000008
RBP: 00007ffcd779e1d0 R08: 000055a2186598a0 R09: 00007ffcd77ba080
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffcd779dfe0
R13: 0000000000000001 R14: ffffffffffffffff R15: 0005b0c01ce3e25e