INFO: task syz-executor285:20058 blocked for more than 140 seconds.
Not tainted 4.19.211-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor285 D25168 20058 8122 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2828 [inline]
__schedule+0x887/0x2040 kernel/sched/core.c:3517
schedule+0x8d/0x1b0 kernel/sched/core.c:3561
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619
__mutex_lock_common kernel/locking/mutex.c:1016 [inline]
__mutex_lock+0x5f0/0x1190 kernel/locking/mutex.c:1078
load_metaops_and_vet net/sched/act_ife.c:281 [inline]
populate_metalist net/sched/act_ife.c:456 [inline]
tcf_ife_init+0x105b/0x1730 net/sched/act_ife.c:580
tcf_action_init_1+0xa06/0xcd0 net/sched/act_api.c:870
tcf_action_init+0x26e/0x3b0 net/sched/act_api.c:936
tcf_action_add+0xd9/0x360 net/sched/act_api.c:1317
tc_ctl_action+0x327/0x410 net/sched/act_api.c:1372
rtnetlink_rcv_msg+0x453/0xb80 net/core/rtnetlink.c:4782
netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2463
netlink_unicast_kernel net/netlink/af_netlink.c:1325 [inline]
netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1351
netlink_sendmsg+0x6c3/0xc50 net/netlink/af_netlink.c:1917
sock_sendmsg_nosec net/socket.c:651 [inline]
sock_sendmsg+0xc3/0x120 net/socket.c:661
___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2227
__sys_sendmsg net/socket.c:2265 [inline]
__do_sys_sendmsg net/socket.c:2274 [inline]
__se_sys_sendmsg net/socket.c:2272 [inline]
__x64_sys_sendmsg+0x132/0x220 net/socket.c:2272
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f8a6cae79f9
Code: Bad RIP value.
RSP: 002b:00007f8a6ca78318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f8a6cb6f418 RCX: 00007f8a6cae79f9
RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000004
RBP: 00007f8a6cb6f410 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8a6cb3d074
R13: 00007ffd4c94f40f R14: 00007f8a6ca78400 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/1570:
#0: 00000000c62bac95 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441
3 locks held by kworker/1:2/3557:
#0: 00000000b6cfff02 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124
#1: 00000000f5016026 ((addr_chk_work).work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
#2: 000000006d615d50 (rtnl_mutex){+.+.}, at: addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4476
1 lock held by in:imklog/7819:
#0: 000000008b7d11e1 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767
1 lock held by syz-executor285/20057:
1 lock held by syz-executor285/20058:
#0: 000000006d615d50 (rtnl_mutex){+.+.}, at: load_metaops_and_vet net/sched/act_ife.c:281 [inline]
#0: 000000006d615d50 (rtnl_mutex){+.+.}, at: populate_metalist net/sched/act_ife.c:456 [inline]
#0: 000000006d615d50 (rtnl_mutex){+.+.}, at: tcf_ife_init+0x105b/0x1730 net/sched/act_ife.c:580
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-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+0x1fc/0x2ef lib/dump_stack.c:118
nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline]
watchdog+0x991/0xe60 kernel/hung_task.c:287
kthread+0x33f/0x460 kernel/kthread.c:259
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 20057 Comm: syz-executor285 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__radix_tree_lookup+0x14/0x370 lib/radix-tree.c:1032
Code: 6d a9 f9 e9 c8 fd ff ff e8 d9 6d a9 f9 e9 0a fe ff ff 0f 1f 40 00 41 57 48 8d 47 40 41 56 49 be 00 00 00 00 00 fc ff df 41 55 <41> 54 55 53 48 83 ec 40 48 89 44 24 38 48 89 44 24 30 48 c1 e8 03
RSP: 0018:ffff888094306f10 EFLAGS: 00000246
RAX: ffff88823585ce78 RBX: 00000000ffffe300 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 00000000ffffe300 RDI: ffff88823585ce38
RBP: ffff888094306ff0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000005 R11: 00000000ee11417d R12: ffff888094307168
R13: 0000000000000000 R14: dffffc0000000000 R15: ffff88823585ce38
FS: 00007f8a6ca99700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000100 CR3: 00000000b14c5000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
tcf_idr_check_alloc+0xab/0x320 net/sched/act_api.c:446
tcf_ife_init+0x38e/0x1730 net/sched/act_ife.c:514
tcf_action_init_1+0xa06/0xcd0 net/sched/act_api.c:870
tcf_action_init+0x26e/0x3b0 net/sched/act_api.c:936
tcf_action_add+0xd9/0x360 net/sched/act_api.c:1317
tc_ctl_action+0x327/0x410 net/sched/act_api.c:1372
rtnetlink_rcv_msg+0x453/0xb80 net/core/rtnetlink.c:4782
netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2463
netlink_unicast_kernel net/netlink/af_netlink.c:1325 [inline]
netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1351
netlink_sendmsg+0x6c3/0xc50 net/netlink/af_netlink.c:1917
sock_sendmsg_nosec net/socket.c:651 [inline]
sock_sendmsg+0xc3/0x120 net/socket.c:661
___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2227
__sys_sendmsg net/socket.c:2265 [inline]
__do_sys_sendmsg net/socket.c:2274 [inline]
__se_sys_sendmsg net/socket.c:2272 [inline]
__x64_sys_sendmsg+0x132/0x220 net/socket.c:2272
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f8a6cae79f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8a6ca99318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f8a6cb6f408 RCX: 00007f8a6cae79f9
RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003
RBP: 00007f8a6cb6f400 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8a6cb3d074
R13: 00007ffd4c94f40f R14: 00007f8a6ca99400 R15: 0000000000022000
----------------
Code disassembly (best guess), 2 bytes skipped:
0: f9 stc
1: e9 c8 fd ff ff jmpq 0xfffffdce
6: e8 d9 6d a9 f9 callq 0xf9a96de4
b: e9 0a fe ff ff jmpq 0xfffffe1a
10: 0f 1f 40 00 nopl 0x0(%rax)
14: 41 57 push %r15
16: 48 8d 47 40 lea 0x40(%rdi),%rax
1a: 41 56 push %r14
1c: 49 be 00 00 00 00 00 movabs $0xdffffc0000000000,%r14
23: fc ff df
26: 41 55 push %r13
* 28: 41 54 push %r12 <-- trapping instruction
2a: 55 push %rbp
2b: 53 push %rbx
2c: 48 83 ec 40 sub $0x40,%rsp
30: 48 89 44 24 38 mov %rax,0x38(%rsp)
35: 48 89 44 24 30 mov %rax,0x30(%rsp)
3a: 48 c1 e8 03 shr $0x3,%rax