INFO: task syz-executor.5:19471 can't die for more than 143 seconds.
task:syz-executor.5 state:D stack:27080 pid:19471 ppid: 10595 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4965 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6246
schedule+0xd2/0x260 kernel/sched/core.c:6319
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378
__mutex_lock_common kernel/locking/mutex.c:672 [inline]
__mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732
smc_pnet_create_pnetids_list net/smc/smc_pnet.c:798 [inline]
smc_pnet_net_init+0x1f9/0x410 net/smc/smc_pnet.c:867
ops_init+0xaf/0x470 net/core/net_namespace.c:140
setup_net+0x40f/0xa30 net/core/net_namespace.c:326
copy_net_ns+0x318/0x760 net/core/net_namespace.c:470
create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110
unshare_nsproxy_namespaces+0xc1/0x1f0 kernel/nsproxy.c:226
ksys_unshare+0x445/0x920 kernel/fork.c:3125
__do_sys_unshare kernel/fork.c:3196 [inline]
__se_sys_unshare kernel/fork.c:3194 [inline]
__x64_sys_unshare+0x2d/0x40 kernel/fork.c:3194
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f4311151a39
RSP: 002b:00007f430e6c7188 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007f4311254f60 RCX: 00007f4311151a39
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000
RBP: 00007f43111abc5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff36bae04f R14: 00007f430e6c7300 R15: 0000000000022000
INFO: task syz-executor.5:19471 blocked for more than 143 seconds.
Not tainted 5.15.0-rc6-next-20211020-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:27080 pid:19471 ppid: 10595 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4965 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6246
schedule+0xd2/0x260 kernel/sched/core.c:6319
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378
__mutex_lock_common kernel/locking/mutex.c:672 [inline]
__mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732
smc_pnet_create_pnetids_list net/smc/smc_pnet.c:798 [inline]
smc_pnet_net_init+0x1f9/0x410 net/smc/smc_pnet.c:867
ops_init+0xaf/0x470 net/core/net_namespace.c:140
setup_net+0x40f/0xa30 net/core/net_namespace.c:326
copy_net_ns+0x318/0x760 net/core/net_namespace.c:470
create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110
unshare_nsproxy_namespaces+0xc1/0x1f0 kernel/nsproxy.c:226
ksys_unshare+0x445/0x920 kernel/fork.c:3125
__do_sys_unshare kernel/fork.c:3196 [inline]
__se_sys_unshare kernel/fork.c:3194 [inline]
__x64_sys_unshare+0x2d/0x40 kernel/fork.c:3194
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f4311151a39
RSP: 002b:00007f430e6c7188 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007f4311254f60 RCX: 00007f4311151a39
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000
RBP: 00007f43111abc5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff36bae04f R14: 00007f430e6c7300 R15: 0000000000022000
INFO: task syz-executor.2:19495 can't die for more than 143 seconds.
task:syz-executor.2 state:D stack:25080 pid:19495 ppid: 18734 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:4965 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6246
schedule+0xd2/0x260 kernel/sched/core.c:6319
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378
__mutex_lock_common kernel/locking/mutex.c:672 [inline]
__mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732
tc_new_tfilter+0xb36/0x2350 net/sched/cls_api.c:2009
rtnetlink_rcv_msg+0x80d/0xb80 net/core/rtnetlink.c:5563
netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2491
netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345
netlink_sendmsg+0x86d/0xda0 net/netlink/af_netlink.c:1916
sock_sendmsg_nosec net/socket.c:704 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:724
____sys_sendmsg+0x331/0x810 net/socket.c:2409
___sys_sendmsg+0xf3/0x170 net/socket.c:2463
__sys_sendmmsg+0x195/0x470 net/socket.c:2549
__do_sys_sendmmsg net/socket.c:2578 [inline]
__se_sys_sendmmsg net/socket.c:2575 [inline]
__x64_sys_sendmmsg+0x99/0x100 net/socket.c:2575
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f3596849a39
RSP: 002b:00007f3593d9e188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f359694d020 RCX: 00007f3596849a39
RDX: 04924924924926d3 RSI: 0000000020000200 RDI: 0000000000000003
RBP: 00007f35968a3c5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcec160e0f R14: 00007f3593d9e300 R15: 0000000000022000
INFO: task syz-executor.2:19495 blocked for more than 144 seconds.
Not tainted 5.15.0-rc6-next-20211020-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:25080 pid:19495 ppid: 18734 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:4965 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6246
schedule+0xd2/0x260 kernel/sched/core.c:6319
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378
__mutex_lock_common kernel/locking/mutex.c:672 [inline]
__mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732
tc_new_tfilter+0xb36/0x2350 net/sched/cls_api.c:2009
rtnetlink_rcv_msg+0x80d/0xb80 net/core/rtnetlink.c:5563
netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2491
netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345
netlink_sendmsg+0x86d/0xda0 net/netlink/af_netlink.c:1916
sock_sendmsg_nosec net/socket.c:704 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:724
____sys_sendmsg+0x331/0x810 net/socket.c:2409
___sys_sendmsg+0xf3/0x170 net/socket.c:2463
__sys_sendmmsg+0x195/0x470 net/socket.c:2549
__do_sys_sendmmsg net/socket.c:2578 [inline]
__se_sys_sendmmsg net/socket.c:2575 [inline]
__x64_sys_sendmmsg+0x99/0x100 net/socket.c:2575
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f3596849a39
RSP: 002b:00007f3593d9e188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f359694d020 RCX: 00007f3596849a39
RDX: 04924924924926d3 RSI: 0000000020000200 RDI: 0000000000000003
RBP: 00007f35968a3c5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcec160e0f R14: 00007f3593d9e300 R15: 0000000000022000
INFO: task syz-executor.2:19525 can't die for more than 144 seconds.
task:syz-executor.2 state:D stack:26120 pid:19525 ppid: 18734 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4965 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6246
Showing all locks held in the system:
3 locks held by kworker/0:0/5:
#0: ffff8880222d2d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff8880222d2d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff8880222d2d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline]
#0: ffff8880222d2d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline]
#0: ffff8880222d2d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline]
#0: ffff8880222d2d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x896/0x1690 kernel/workqueue.c:2268
#1: ffffc90000ca7db0 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x8ca/0x1690 kernel/workqueue.c:2272
#2: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4590
1 lock held by khungtaskd/27:
#0: ffffffff8bb835a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
3 locks held by kworker/u4:6/1056:
1 lock held by in:imklog/6237:
2 locks held by agetty/6464:
#0: ffff88807faf7098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252
#1: ffffc900029dc2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2113
6 locks held by kworker/u4:7/9351:
#0: ffff8880b9d39a98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:478
#1: ffff8880b9d279c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x3a6/0x490 kernel/sched/psi.c:880
#2: ffff8880266d4d80 (&wdev->mtx){+.+.}-{3:3}, at: sdata_lock net/mac80211/ieee80211_i.h:1013 [inline]
#2: ffff8880266d4d80 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x93/0xe80 net/mac80211/ibss.c:1681
#3: ffffffff8bb835a0 (rcu_read_lock){....}-{1:2}, at: sdata_assert_lock net/mac80211/ieee80211_i.h:1030 [inline]
#3: ffffffff8bb835a0 (rcu_read_lock){....}-{1:2}, at: ieee80211_sta_active_ibss+0x86/0x350 net/mac80211/ibss.c:652
#4: ffff8880b9d28070 (krc.lock){..-.}-{2:2}, at: krc_this_cpu_lock kernel/rcu/tree.c:3188 [inline]
#4: ffff8880b9d28070 (krc.lock){..-.}-{2:2}, at: add_ptr_to_bulk_krc_lock kernel/rcu/tree.c:3471 [inline]
#4: ffff8880b9d28070 (krc.lock){..-.}-{2:2}, at: kvfree_call_rcu+0xde/0x990 kernel/rcu/tree.c:3562
#5: ffff888010daf138 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:367 [inline]
#5: ffff888010daf138 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: __get_locked_pte+0x2b6/0x4d0 mm/memory.c:1722
3 locks held by kworker/0:9/14324:
#0: ffff888010c65d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888010c65d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888010c65d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline]
#0: ffff888010c65d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline]
#0: ffff888010c65d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline]
#0: ffff888010c65d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x896/0x1690 kernel/workqueue.c:2268
#1: ffffc9000a667db0 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x8ca/0x1690 kernel/workqueue.c:2272
#2: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: reg_check_chans_work+0x83/0xe10 net/wireless/reg.c:2423
2 locks held by syz-executor.5/19471:
#0: ffffffff8d2e9390 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2f5/0x760 net/core/net_namespace.c:466
#1: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:798 [inline]
#1: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x1f9/0x410 net/smc/smc_pnet.c:867
1 lock held by syz-executor.2/19495:
#0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: tc_new_tfilter+0xb36/0x2350 net/sched/cls_api.c:2009
1 lock held by syz-executor.2/19525:
#0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
#0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 net/core/rtnetlink.c:5569
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.0-rc6-next-20211020-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x1ae/0x220 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:254 [inline]
watchdog+0xcb7/0xed0 kernel/hung_task.c:339
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 14 Comm: rcu_preempt Not tainted 5.15.0-rc6-next-20211020-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__this_cpu_preempt_check+0x1/0x20 lib/smp_processor_id.c:65
Code: 07 e7 cc ff eb a2 0f 1f 00 0f 1f 44 00 00 48 c7 c6 e0 6d 04 8a 48 c7 c7 20 6e 04 8a e9 78 fe ff ff 0f 1f 84 00 00 00 00 00 55 <48> 89 fd 0f 1f 44 00 00 48 89 ee 5d 48 c7 c7 60 6e 04 8a e9 57 fe
RSP: 0018:ffffc90000d379b8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8bb834e0 RDI: ffffffff89ac08c0
RBP: ffffffff8bb834e0 R08: 0000000000000000 R09: ffffffff8d8febd7
R10: fffffbfff1b1fd7a R11: 0000000000000001 R12: ffff88813fe39d00
R13: 0000000000000000 R14: 00000000ffffffff R15: ffff88813fe3a768
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f43cd472008 CR3: 000000000b88e000 CR4: 00000000003506e0
Call Trace:
lockdep_recursion_finish kernel/locking/lockdep.c:438 [inline]
lock_is_held_type+0xd7/0x140 kernel/locking/lockdep.c:5681
lock_is_held include/linux/lockdep.h:283 [inline]
rcu_read_lock_sched_held+0x3a/0x70 kernel/rcu/update.c:125
trace_lock_release include/trace/events/lock.h:58 [inline]
lock_release+0x522/0x720 kernel/locking/lockdep.c:5648
__raw_spin_unlock include/linux/spinlock_api_smp.h:150 [inline]
_raw_spin_unlock+0x12/0x40 kernel/locking/spinlock.c:186
raw_spin_rq_unlock_irq kernel/sched/sched.h:1328 [inline]
finish_lock_switch kernel/sched/core.c:4710 [inline]
finish_task_switch.isra.0+0x2f9/0xb60 kernel/sched/core.c:4831
context_switch kernel/sched/core.c:4968 [inline]
__schedule+0xaa2/0x4940 kernel/sched/core.c:6246
schedule+0xd2/0x260 kernel/sched/core.c:6319
schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881
rcu_gp_fqs_loop+0x186/0x810 kernel/rcu/tree.c:1966
rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2139
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess), 4 bytes skipped:
0: eb a2 jmp 0xffffffa4
2: 0f 1f 00 nopl (%rax)
5: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
a: 48 c7 c6 e0 6d 04 8a mov $0xffffffff8a046de0,%rsi
11: 48 c7 c7 20 6e 04 8a mov $0xffffffff8a046e20,%rdi
18: e9 78 fe ff ff jmpq 0xfffffe95
1d: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1)
24: 00
25: 55 push %rbp
* 26: 48 89 fd mov %rdi,%rbp <-- trapping instruction
29: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
2e: 48 89 ee mov %rbp,%rsi
31: 5d pop %rbp
32: 48 c7 c7 60 6e 04 8a mov $0xffffffff8a046e60,%rdi
39: e9 .byte 0xe9
3a: 57 push %rdi
3b: fe .byte 0xfe