INFO: task systemd-udevd:2436 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:systemd-udevd state:D stack:26904 pid: 2436 ppid: 2969 flags:0x00004000
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
dev_ioctl+0x470/0xee0 net/core/dev_ioctl.c:521
sock_do_ioctl+0x15a/0x230 net/socket.c:1132
sock_ioctl+0x2f1/0x640 net/socket.c:1235
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl fs/ioctl.c:860 [inline]
__x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860
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: 0033:0x7fa4fa2a6017
RSP: 002b:00007ffc0438f478 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ffc0438f4c0 RCX: 00007fa4fa2a6017
RDX: 00007ffc0438f490 RSI: 0000000000008946 RDI: 0000000000000007
RBP: 00007ffc0438f630 R08: 0000000000000000 R09: 00000000000000c0
R10: 0000000000000001 R11: 0000000000000246 R12: 000056055dd17cf0
R13: 00007ffc0438f490 R14: 0000000000000001 R15: 0000000000000000
INFO: task syz-executor.2:3461 can't die for more than 143 seconds.
task:syz-executor.2 state:R running task stack:26760 pid: 3461 ppid: 23614 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_timeout+0x14a/0x2a0 kernel/time/timer.c:1881
dev_deactivate_many+0x710/0xc60 net/sched/sch_generic.c:1302
dev_deactivate+0xe9/0x1b0 net/sched/sch_generic.c:1312
qdisc_graft+0xdac/0x1260 net/sched/sch_api.c:1061
tc_modify_qdisc+0xb92/0x1980 net/sched/sch_api.c:1671
rtnetlink_rcv_msg+0x413/0xb80 net/core/rtnetlink.c:5572
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+0x6e8/0x810 net/socket.c:2409
___sys_sendmsg+0xf3/0x170 net/socket.c:2463
__sys_sendmsg+0xe5/0x1b0 net/socket.c:2492
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: 0033:0x7f10db01fa39
RSP: 002b:00007f10d8595188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f10db122f60 RCX: 00007f10db01fa39
RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
RBP: 00007f10db079c5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc5eb0d05f R14: 00007f10d8595300 R15: 0000000000022000
INFO: task syz-executor.3:3454 can't die for more than 143 seconds.
task:syz-executor.3 state:D stack:28128 pid: 3454 ppid: 22162 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
packet_flush_mclist net/packet/af_packet.c:3716 [inline]
packet_release+0x3f1/0xcc0 net/packet/af_packet.c:3119
__sock_release+0xcd/0x280 net/socket.c:649
sock_close+0x18/0x20 net/socket.c:1314
__fput+0x286/0x9f0 fs/file_table.c:280
task_work_run+0xdd/0x1a0 kernel/task_work.c:164
tracehook_notify_resume include/linux/tracehook.h:189 [inline]
exit_to_user_mode_loop kernel/entry/common.c:175 [inline]
exit_to_user_mode_prepare+0x27e/0x290 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7ff8f14dd67b
RSP: 002b:00007fff02f77af0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007ff8f14dd67b
RDX: 0000001b2c922d34 RSI: ffffffff8135f0a2 RDI: 0000000000000003
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b2c92241c
R10: 0000000000001060 R11: 0000000000000293 R12: 00007ff8f162eb60
R13: 00007ff8f162eb60 R14: 00007ff8f162df60 R15: 00000000000f2cbd
INFO: task syz-executor.3:3454 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.3 state:D stack:28128 pid: 3454 ppid: 22162 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
packet_flush_mclist net/packet/af_packet.c:3716 [inline]
packet_release+0x3f1/0xcc0 net/packet/af_packet.c:3119
__sock_release+0xcd/0x280 net/socket.c:649
sock_close+0x18/0x20 net/socket.c:1314
__fput+0x286/0x9f0 fs/file_table.c:280
task_work_run+0xdd/0x1a0 kernel/task_work.c:164
tracehook_notify_resume include/linux/tracehook.h:189 [inline]
exit_to_user_mode_loop kernel/entry/common.c:175 [inline]
exit_to_user_mode_prepare+0x27e/0x290 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7ff8f14dd67b
RSP: 002b:00007fff02f77af0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007ff8f14dd67b
RDX: 0000001b2c922d34 RSI: ffffffff8135f0a2 RDI: 0000000000000003
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b2c92241c
R10: 0000000000001060 R11: 0000000000000293 R12: 00007ff8f162eb60
R13: 00007ff8f162eb60 R14: 00007ff8f162df60 R15: 00000000000f2cbd
INFO: task syz-executor.3:3464 can't die for more than 144 seconds.
task:syz-executor.3 state:D stack:28136 pid: 3464 ppid: 22162 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
rtnl_lock net/core/rtnetlink.c:72 [inline]
rtnetlink_rcv_msg+0x3be/0xb80 net/core/rtnetlink.c:5569
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+0x6e8/0x810 net/socket.c:2409
___sys_sendmsg+0xf3/0x170 net/socket.c:2463
__sys_sendmsg+0xe5/0x1b0 net/socket.c:2492
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: 0033:0x7ff8f152aa39
RSP: 002b:00007ff8eea7f188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007ff8f162e020 RCX: 00007ff8f152aa39
RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000004
RBP: 00007ff8f1584c5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff02f77a8f R14: 00007ff8eea7f300 R15: 0000000000022000
INFO: task syz-executor.3:3464 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.3 state:D stack:28136 pid: 3464 ppid: 22162 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
rtnl_lock net/core/rtnetlink.c:72 [inline]
rtnetlink_rcv_msg+0x3be/0xb80 net/core/rtnetlink.c:5569
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+0x6e8/0x810 net/socket.c:2409
___sys_sendmsg+0xf3/0x170 net/socket.c:2463
__sys_sendmsg+0xe5/0x1b0 net/socket.c:2492
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: 0033:0x7ff8f152aa39
RSP: 002b:00007ff8eea7f188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007ff8f162e020 RCX: 00007ff8f152aa39
RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000004
RBP: 00007ff8f1584c5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff02f77a8f R14: 00007ff8eea7f300 R15: 0000000000022000
Showing all locks held in the system:
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/1:5/32534:
#0: ffff88802202b538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff88802202b538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff88802202b538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline]
#0: ffff88802202b538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline]
#0: ffff88802202b538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline]
#0: ffff88802202b538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x896/0x1690 kernel/workqueue.c:2268
#1: ffffc90003bbfdb0 ((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 systemd-udevd/2436:
#0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x470/0xee0 net/core/dev_ioctl.c:521
1 lock held by syz-executor.2/3461:
#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
2 locks held by syz-executor.3/3454:
#0: ffff888044d2e810 (&sb->s_type->i_mutex_key#13){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:783 [inline]
#0: ffff888044d2e810 (&sb->s_type->i_mutex_key#13){+.+.}-{3:3}, at: __sock_release+0x86/0x280 net/socket.c:648
#1: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: packet_flush_mclist net/packet/af_packet.c:3716 [inline]
#1: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: packet_release+0x3f1/0xcc0 net/packet/af_packet.c:3119
1 lock held by syz-executor.3/3464:
#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: 2968 Comm: systemd-journal 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:__sanitizer_cov_trace_pc+0x9/0x60 kernel/kcov.c:196
Code: 5d be 03 00 00 00 e9 66 9b 60 02 66 0f 1f 44 00 00 48 8b be b0 01 00 00 e8 b4 ff ff ff 31 c0 c3 90 65 8b 05 89 fa 8a 7e 89 c1 <48> 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 40 70 02 00 a9 00 01
RSP: 0018:ffffc90001a5fa18 EFLAGS: 00000202
RAX: 0000000080000000 RBX: ffffffff89acc882 RCX: 0000000080000000
RDX: 0000000000000000 RSI: ffff88807b3fd700 RDI: 0000000000000003
RBP: ffffc90001a5fb38 R08: 0000000000000000 R09: 000000000000002c
R10: ffffffff840ae9ab R11: 0000000000000025 R12: dffffc0000000000
R13: ffffffff89acc882 R14: 1ffff9200034bf47 R15: 000000000000002c
FS: 00007f3e838498c0(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3e80f4b008 CR3: 000000007a42a000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
format_decode+0x14b/0xad0 lib/vsprintf.c:2532
vsnprintf+0x157/0x14f0 lib/vsprintf.c:2750
vscnprintf lib/vsprintf.c:2901 [inline]
scnprintf+0xbb/0x140 lib/vsprintf.c:2955
info_print_ext_header.constprop.0+0x1eb/0x280 kernel/printk/printk.c:570
devkmsg_read+0x3c9/0x730 kernel/printk/printk.c:752
vfs_read+0x1b5/0x600 fs/read_write.c:483
ksys_read+0x12d/0x250 fs/read_write.c:623
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: 0033:0x7f3e82dd8210
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:00007ffe874e4c58 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007ffe874e76d0 RCX: 00007f3e82dd8210
RDX: 0000000000002000 RSI: 00007ffe874e54d0 RDI: 0000000000000009
RBP: 0000000000000000 R08: 0000000000000008 R09: 000055f5dbf3a7b8
R10: 000055f5dbf3a780 R11: 0000000000000246 R12: 00007ffe874e54d0
R13: 00007ffe874e7628 R14: 000055f5db35e958 R15: 0005cec4857818c9
----------------
Code disassembly (best guess):
0: 5d pop %rbp
1: be 03 00 00 00 mov $0x3,%esi
6: e9 66 9b 60 02 jmpq 0x2609b71
b: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1)
11: 48 8b be b0 01 00 00 mov 0x1b0(%rsi),%rdi
18: e8 b4 ff ff ff callq 0xffffffd1
1d: 31 c0 xor %eax,%eax
1f: c3 retq
20: 90 nop
21: 65 8b 05 89 fa 8a 7e mov %gs:0x7e8afa89(%rip),%eax # 0x7e8afab1
28: 89 c1 mov %eax,%ecx
* 2a: 48 8b 34 24 mov (%rsp),%rsi <-- trapping instruction
2e: 81 e1 00 01 00 00 and $0x100,%ecx
34: 65 48 8b 14 25 40 70 mov %gs:0x27040,%rdx
3b: 02 00
3d: a9 .byte 0xa9
3e: 00 01 add %al,(%rcx)