INFO: task kworker/u4:6:7417 blocked for more than 143 seconds.
Not tainted 5.15.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:6 state:D stack:20632 pid: 7417 ppid: 2 flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
context_switch kernel/sched/core.c:4940 [inline]
__schedule+0xc8d/0x1270 kernel/sched/core.c:6287
schedule+0x14b/0x210 kernel/sched/core.c:6366
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6425
__mutex_lock_common+0xdff/0x2550 kernel/locking/mutex.c:669
__mutex_lock kernel/locking/mutex.c:729 [inline]
mutex_lock_nested+0x1a/0x20 kernel/locking/mutex.c:743
ip6gre_exit_batch_net+0xc0/0x4a0 net/ipv6/ip6_gre.c:1626
ops_exit_list net/core/net_namespace.c:171 [inline]
cleanup_net+0x7ec/0xc50 net/core/net_namespace.c:591
process_one_work+0x853/0x1140 kernel/workqueue.c:2297
worker_thread+0xac1/0x1320 kernel/workqueue.c:2444
kthread+0x453/0x480 kernel/kthread.c:319
ret_from_fork+0x1f/0x30
INFO: task systemd-udevd:22593 blocked for more than 143 seconds.
Not tainted 5.15.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:systemd-udevd state:D stack:26168 pid:22593 ppid: 2969 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4940 [inline]
__schedule+0xc8d/0x1270 kernel/sched/core.c:6287
schedule+0x14b/0x210 kernel/sched/core.c:6366
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6425
__mutex_lock_common+0xdff/0x2550 kernel/locking/mutex.c:669
__mutex_lock kernel/locking/mutex.c:729 [inline]
mutex_lock_nested+0x1a/0x20 kernel/locking/mutex.c:743
dev_ioctl+0x277/0xf30 net/core/dev_ioctl.c:521
sock_do_ioctl+0x34d/0x5b0 net/socket.c:1132
sock_ioctl+0x4f7/0x990 net/socket.c:1235
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl+0xfb/0x170 fs/ioctl.c:860
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f37c6845017
RSP: 002b:00007ffd3e75c6d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ffd3e75c720 RCX: 00007f37c6845017
RDX: 00007ffd3e75c6f0 RSI: 0000000000008946 RDI: 0000000000000007
RBP: 00007ffd3e75c890 R08: 0000000000000000 R09: 00000000000000d8
R10: 0000000000000001 R11: 0000000000000246 R12: 00005564abefdcf0
R13: 00007ffd3e75c6f0 R14: 0000000000000001 R15: 0000000000000000
INFO: task systemd-udevd:22621 blocked for more than 144 seconds.
Not tainted 5.15.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:systemd-udevd state:D stack:26448 pid:22621 ppid: 2969 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4940 [inline]
__schedule+0xc8d/0x1270 kernel/sched/core.c:6287
schedule+0x14b/0x210 kernel/sched/core.c:6366
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6425
__mutex_lock_common+0xdff/0x2550 kernel/locking/mutex.c:669
__mutex_lock kernel/locking/mutex.c:729 [inline]
mutex_lock_nested+0x1a/0x20 kernel/locking/mutex.c:743
dev_ioctl+0x277/0xf30 net/core/dev_ioctl.c:521
sock_do_ioctl+0x34d/0x5b0 net/socket.c:1132
sock_ioctl+0x4f7/0x990 net/socket.c:1235
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl+0xfb/0x170 fs/ioctl.c:860
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f37c6845017
RSP: 002b:00007ffd3e75c0e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ffd3e75c130 RCX: 00007f37c6845017
RDX: 00007ffd3e75c100 RSI: 0000000000008946 RDI: 0000000000000007
RBP: 00007ffd3e75c2a0 R08: 0000000000000000 R09: 0000000000000060
R10: 0000000000000001 R11: 0000000000000246 R12: 00005564abefdcf0
R13: 00007ffd3e75c100 R14: 0000000000000001 R15: 0000000000000000
INFO: task systemd-udevd:22624 blocked for more than 144 seconds.
Not tainted 5.15.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:systemd-udevd state:D stack:26768 pid:22624 ppid: 2969 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4940 [inline]
__schedule+0xc8d/0x1270 kernel/sched/core.c:6287
schedule+0x14b/0x210 kernel/sched/core.c:6366
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6425
__mutex_lock_common+0xdff/0x2550 kernel/locking/mutex.c:669
__mutex_lock kernel/locking/mutex.c:729 [inline]
mutex_lock_nested+0x1a/0x20 kernel/locking/mutex.c:743
dev_ioctl+0x277/0xf30 net/core/dev_ioctl.c:521
sock_do_ioctl+0x34d/0x5b0 net/socket.c:1132
sock_ioctl+0x4f7/0x990 net/socket.c:1235
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl+0xfb/0x170 fs/ioctl.c:860
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f37c6845017
RSP: 002b:00007ffd3e75c0e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ffd3e75c130 RCX: 00007f37c6845017
RDX: 00007ffd3e75c100 RSI: 0000000000008946 RDI: 0000000000000007
RBP: 00007ffd3e75c2a0 R08: 0000000000000000 R09: 00000000000000d8
R10: 0000000000000001 R11: 0000000000000246 R12: 00005564abefdcf0
R13: 00007ffd3e75c100 R14: 0000000000000001 R15: 0000000000000000
INFO: task systemd-udevd:22631 blocked for more than 145 seconds.
Not tainted 5.15.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:systemd-udevd state:D stack:26768 pid:22631 ppid: 2969 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4940 [inline]
__schedule+0xc8d/0x1270 kernel/sched/core.c:6287
schedule+0x14b/0x210 kernel/sched/core.c:6366
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6425
__mutex_lock_common+0xdff/0x2550 kernel/locking/mutex.c:669
__mutex_lock kernel/locking/mutex.c:729 [inline]
mutex_lock_nested+0x1a/0x20 kernel/locking/mutex.c:743
dev_ioctl+0x277/0xf30 net/core/dev_ioctl.c:521
sock_do_ioctl+0x34d/0x5b0 net/socket.c:1132
sock_ioctl+0x4f7/0x990 net/socket.c:1235
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl+0xfb/0x170 fs/ioctl.c:860
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f37c6845017
RSP: 002b:00007ffd3e75c0e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ffd3e75c130 RCX: 00007f37c6845017
RDX: 00007ffd3e75c100 RSI: 0000000000008946 RDI: 0000000000000007
RBP: 00007ffd3e75c2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000246 R12: 00005564abefdcf0
R13: 00007ffd3e75c100 R14: 0000000000000001 R15: 0000000000000000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8c91c1c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
1 lock held by in:imklog/6161:
#0: ffff88802557ad70 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x2f0 fs/file.c:990
4 locks held by kworker/u4:6/7417:
#0: ffff888016393138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x7ca/0x1140
#1: ffffc9000465fd20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x808/0x1140 kernel/workqueue.c:2272
#2: ffffffff8d94fff0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xf0/0xc50 net/core/net_namespace.c:553
#3: ffffffff8d95bc48 (rtnl_mutex){+.+.}-{3:3}, at: ip6gre_exit_batch_net+0xc0/0x4a0 net/ipv6/ip6_gre.c:1626
2 locks held by kworker/u4:8/9709:
3 locks held by kworker/1:13/14968:
#0: ffff8880258bf538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x7ca/0x1140
#1: ffffc9000529fd20 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x808/0x1140 kernel/workqueue.c:2272
#2: ffffffff8d95bc48 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4590
2 locks held by kworker/1:14/14970:
3 locks held by kworker/0:17/15013:
#0: ffff888011064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7ca/0x1140
#1: ffffc9000544fd20 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x808/0x1140 kernel/workqueue.c:2272
#2: ffffffff8d95bc48 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:74
3 locks held by kworker/0:19/15015:
#0: ffff888011064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7ca/0x1140
#1: ffffc9000546fd20 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x808/0x1140 kernel/workqueue.c:2272
#2: ffffffff8d95bc48 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xa/0x50 net/core/link_watch.c:251
2 locks held by syz-executor.1/22562:
#0: ffffffff8d95bc48 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
#0: ffffffff8d95bc48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x8ed/0xe60 net/core/rtnetlink.c:5569
#1: ffffffff8c9209a8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline]
#1: ffffffff8c9209a8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x277/0x750 kernel/rcu/tree_exp.h:837
1 lock held by systemd-udevd/22593:
#0: ffffffff8d95bc48 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x277/0xf30 net/core/dev_ioctl.c:521
1 lock held by systemd-udevd/22621:
#0: ffffffff8d95bc48 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x277/0xf30 net/core/dev_ioctl.c:521
1 lock held by systemd-udevd/22624:
#0: ffffffff8d95bc48 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x277/0xf30 net/core/dev_ioctl.c:521
1 lock held by systemd-udevd/22631:
#0: ffffffff8d95bc48 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x277/0xf30 net/core/dev_ioctl.c:521
1 lock held by syz-executor.3/22636:
#0: ffffffff8d95bc48 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
#0: ffffffff8d95bc48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x8ed/0xe60 net/core/rtnetlink.c:5569
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.0-rc3-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+0x1dc/0x2d8 lib/dump_stack.c:106
nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x16a/0x280 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xc54/0xca0 kernel/hung_task.c:295
kthread+0x453/0x480 kernel/kthread.c:319
ret_from_fork+0x1f/0x30
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2960 Comm: systemd-journal Not tainted 5.15.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__lock_acquire+0xa98/0x2b00 kernel/locking/lockdep.c:4969
Code: 00 0f 84 4b 0a 00 00 4e 8d ac e7 f8 09 00 00 83 7c 24 70 00 0f 84 a0 02 00 00 48 8b 44 24 38 8a 04 30 84 c0 0f 85 f6 15 00 00 <48> 8b 44 24 20 8b 00 66 85 c0 0f 88 a3 01 00 00 65 8b 0d d5 e8 9d
RSP: 0018:ffffc90002bdf7e0 EFLAGS: 00000046
RAX: 1ffff1100f69e400 RBX: ffff88807b4f26c0 RCX: 0000000000000002
RDX: 0000000000000000 RSI: dffffc0000000000 RDI: ffff88807b4f1c80
RBP: ffffc90002bdf930 R08: dffffc0000000000 R09: fffffbfff1fa31d6
R10: fffffbfff1fa31d6 R11: 0000000000000000 R12: 0000000000000005
R13: ffff88807b4f26a0 R14: 0000000000000001 R15: ffff88807b4f26c0
FS: 00007f24220fe8c0(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f241f6d9000 CR3: 000000007dcfa000 CR4: 00000000003506e0
Call Trace:
lock_acquire+0x19f/0x4d0 kernel/locking/lockdep.c:5625
__might_fault+0xb4/0x110 mm/memory.c:5262
_copy_to_user+0x28/0x130 lib/usercopy.c:28
copy_to_user include/linux/uaccess.h:200 [inline]
devkmsg_read+0x65a/0x900 kernel/printk/printk.c:761
vfs_read+0x324/0xe60 fs/read_write.c:483
ksys_read+0x18f/0x2c0 fs/read_write.c:623
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f242168d210
Code: 73 01 c3 48 8b 0d 98 7d 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d b9 c1 20 00 00 75 10 b8 00 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 4e fc ff ff 48 89 04 24
RSP: 002b:00007ffdf49647a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007ffdf4967220 RCX: 00007f242168d210
RDX: 0000000000002000 RSI: 00007ffdf4965020 RDI: 0000000000000009
RBP: 0000000000000000 R08: 0000000000000008 R09: 000055795bf7d7b8
R10: 000055795bf7d780 R11: 0000000000000246 R12: 00007ffdf4965020
R13: 00007ffdf4967178 R14: 000055795a821958 R15: 0005cd122e781106
----------------
Code disassembly (best guess):
0: 00 0f add %cl,(%rdi)
2: 84 4b 0a test %cl,0xa(%rbx)
5: 00 00 add %al,(%rax)
7: 4e 8d ac e7 f8 09 00 lea 0x9f8(%rdi,%r12,8),%r13
e: 00
f: 83 7c 24 70 00 cmpl $0x0,0x70(%rsp)
14: 0f 84 a0 02 00 00 je 0x2ba
1a: 48 8b 44 24 38 mov 0x38(%rsp),%rax
1f: 8a 04 30 mov (%rax,%rsi,1),%al
22: 84 c0 test %al,%al
24: 0f 85 f6 15 00 00 jne 0x1620
* 2a: 48 8b 44 24 20 mov 0x20(%rsp),%rax <-- trapping instruction
2f: 8b 00 mov (%rax),%eax
31: 66 85 c0 test %ax,%ax
34: 0f 88 a3 01 00 00 js 0x1dd
3a: 65 gs
3b: 8b .byte 0x8b
3c: 0d .byte 0xd
3d: d5 (bad)
3e: e8 .byte 0xe8
3f: 9d popfq