INFO: task udevd:2996 blocked for more than 143 seconds.
Not tainted 6.1.0-rc8-syzkaller-00003-gbce9332220bd #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd state:D stack:22920 pid:2996 ppid:1 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5209 [inline]
__schedule+0x8fc/0xda0 kernel/sched/core.c:6521
schedule+0xcb/0x190 kernel/sched/core.c:6597
rwsem_down_read_slowpath+0x5fe/0x950 kernel/locking/rwsem.c:1095
__down_read_common+0x54/0x2a0 kernel/locking/rwsem.c:1260
kernfs_iop_permission+0xa9/0x360 fs/kernfs/inode.c:290
do_inode_permission fs/namei.c:458 [inline]
inode_permission+0x22c/0x450 fs/namei.c:525
may_lookup fs/namei.c:1715 [inline]
link_path_walk+0x2ef/0xf00 fs/namei.c:2262
path_lookupat+0xab/0x450 fs/namei.c:2473
filename_lookup+0x285/0x660 fs/namei.c:2503
vfs_statx+0x121/0x4e0 fs/stat.c:229
vfs_fstatat fs/stat.c:267 [inline]
__do_sys_newfstatat fs/stat.c:437 [inline]
__se_sys_newfstatat+0x104/0x7b0 fs/stat.c:431
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fdecb9251da
RSP: 002b:00007ffdef4efad8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fdecb9251da
RDX: 00007ffdef4efae8 RSI: 00007ffdef4eff78 RDI: 00000000ffffff9c
RBP: 00007ffdef4efb78 R08: 0000000000000000 R09: 00007fdecb9f5a60
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdef4eff78
R13: 00007ffdef4efae8 R14: 000055c332d13910 R15: 0000000000000000
INFO: task syz-executor.4:3681 blocked for more than 143 seconds.
Not tainted 6.1.0-rc8-syzkaller-00003-gbce9332220bd #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:21552 pid:3681 ppid:1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5209 [inline]
__schedule+0x8fc/0xda0 kernel/sched/core.c:6521
schedule+0xcb/0x190 kernel/sched/core.c:6597
rwsem_down_read_slowpath+0x5fe/0x950 kernel/locking/rwsem.c:1095
__down_read_common+0x54/0x2a0 kernel/locking/rwsem.c:1260
kernfs_iop_permission+0xa9/0x360 fs/kernfs/inode.c:290
do_inode_permission fs/namei.c:458 [inline]
inode_permission+0x22c/0x450 fs/namei.c:525
may_lookup fs/namei.c:1715 [inline]
link_path_walk+0x2ef/0xf00 fs/namei.c:2262
path_openat+0x237/0x2e00 fs/namei.c:3710
do_filp_open+0x275/0x500 fs/namei.c:3741
do_sys_openat2+0x13b/0x500 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_openat fs/open.c:1342 [inline]
__se_sys_openat fs/open.c:1337 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1337
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f6d6988bc48
RSP: 002b:00007fffc7b02be0 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000b23 RCX: 00007f6d6988bc48
RDX: 0000000000090800 RSI: 00007f6d698e6bc8 RDI: 00000000ffffff9c
RBP: 00007fffc7b02cac R08: 0000000000090800 R09: 00007f6d698e6bc8
R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000000
R13: 0000000000252236 R14: 0000000000000016 R15: 00007fffc7b02d10
INFO: task kworker/u4:15:15690 blocked for more than 144 seconds.
Not tainted 6.1.0-rc8-syzkaller-00003-gbce9332220bd #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:15 state:D stack:24464 pid:15690 ppid:2 flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
context_switch kernel/sched/core.c:5209 [inline]
__schedule+0x8fc/0xda0 kernel/sched/core.c:6521
schedule+0xcb/0x190 kernel/sched/core.c:6597
rwsem_down_write_slowpath+0xfdc/0x14a0 kernel/locking/rwsem.c:1190
__down_write_common kernel/locking/rwsem.c:1305 [inline]
__down_write kernel/locking/rwsem.c:1314 [inline]
down_write+0x231/0x270 kernel/locking/rwsem.c:1563
kernfs_remove_by_name_ns+0x76/0x150 fs/kernfs/dir.c:1631
kernfs_remove_by_name include/linux/kernfs.h:618 [inline]
remove_files fs/sysfs/group.c:28 [inline]
sysfs_remove_group+0x102/0x2b0 fs/sysfs/group.c:288
sysfs_remove_groups+0x5b/0xb0 fs/sysfs/group.c:312
destroy_gid_attrs drivers/infiniband/core/sysfs.c:1189 [inline]
ib_free_port_attrs+0xc1/0x400 drivers/infiniband/core/sysfs.c:1409
remove_one_compat_dev drivers/infiniband/core/device.c:1002 [inline]
rdma_dev_exit_net+0x1f1/0x360 drivers/infiniband/core/device.c:1140
ops_exit_list net/core/net_namespace.c:169 [inline]
cleanup_net+0x758/0xc50 net/core/net_namespace.c:601
process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d323fb0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8d3247b0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
#0: ffffffff8d323de0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
1 lock held by udevd/2996:
#0: ffff888012867948 (&root->kernfs_rwsem){++++}-{3:3}, at: kernfs_iop_permission+0xa9/0x360 fs/kernfs/inode.c:290
2 locks held by getty/3316:
#0: ffff88814acbb098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900031262f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6e8/0x1e50 drivers/tty/n_tty.c:2177
1 lock held by syz-executor.4/3681:
#0: ffff888012867948 (&root->kernfs_rwsem){++++}-{3:3}, at: kernfs_iop_permission+0xa9/0x360 fs/kernfs/inode.c:290
4 locks held by kworker/u4:15/15690:
#0: ffff8880129c3138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc900111f7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffffffff8e457a50 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xf0/0xc50 net/core/net_namespace.c:563
#3: ffff888012867948 (&root->kernfs_rwsem){++++}-{3:3}, at: kernfs_remove_by_name_ns+0x76/0x150 fs/kernfs/dir.c:1631
2 locks held by syz-executor.5/22947:
5 locks held by syz-executor.2/22993:
#0: ffffffff8e457a50 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x33d/0x5b0 net/core/net_namespace.c:474
#1: ffffffff8e2572d0 (devices_rwsem){++++}-{3:3}, at: rdma_dev_init_net+0x190/0x280 drivers/infiniband/core/device.c:1179
#2: ffffffff8e257490 (rdma_nets_rwsem){++++}-{3:3}, at: rdma_dev_init_net+0x1ec/0x280 drivers/infiniband/core/device.c:1184
#3: ffff88804b0bcf18 (&device->compat_devs_mutex){+.+.}-{3:3}, at: add_one_compat_dev+0x102/0x6e0 drivers/infiniband/core/device.c:943
#4: ffff888012867948 (&root->kernfs_rwsem){++++}-{3:3}, at: kernfs_activate+0x76/0x3a0 fs/kernfs/dir.c:1351
1 lock held by syz-executor.5/23016:
#0: ffff888012867948 (&root->kernfs_rwsem){++++}-{3:3}, at: kernfs_iop_permission+0xa9/0x360 fs/kernfs/inode.c:290
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.1.0-rc8-syzkaller-00003-gbce9332220bd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x4e3/0x560 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x19b/0x3e0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xcf5/0xd40 kernel/hung_task.c:377
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 22993 Comm: syz-executor.2 Not tainted 6.1.0-rc8-syzkaller-00003-gbce9332220bd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:101 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x5e/0x2e0 mm/kasan/generic.c:189
Code: c1 eb 03 49 b8 00 00 00 00 00 fc ff df 4f 8d 0c 03 4c 8d 54 37 ff 49 c1 ea 03 48 bb 01 00 00 00 00 fc ff df 49 01 da 4d 89 d6 <4d> 29 ce 49 83 fe 10 7f 30 4d 85 f6 0f 84 8e 01 00 00 4c 89 cb 4c
RSP: 0018:ffffc90014efeb00 EFLAGS: 00000096
RAX: 0000000000000001 RBX: dffffc0000000001 RCX: ffffffff816bf88f
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff90726178
RBP: 000000000001ffff R08: dffffc0000000000 R09: fffffbfff20e4c2f
R10: fffffbfff20e4c30 R11: 1ffffffff20e4c2f R12: 0000000000000001
R13: 0000000000000003 R14: fffffbfff20e4c30 R15: ffff888055eb6258
FS: 00007f41585cc700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0052c7000 CR3: 0000000030e65000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
instrument_atomic_read include/linux/instrumented.h:72 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
hlock_class kernel/locking/lockdep.c:227 [inline]
check_wait_context kernel/locking/lockdep.c:4754 [inline]
__lock_acquire+0x77f/0x1f60 kernel/locking/lockdep.c:5005
lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5668
__raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline]
_raw_spin_lock_irq+0xcf/0x110 kernel/locking/spinlock.c:170
rwsem_down_write_slowpath+0xbb8/0x14a0 kernel/locking/rwsem.c:1194
__down_write_common kernel/locking/rwsem.c:1305 [inline]
__down_write kernel/locking/rwsem.c:1314 [inline]
down_write+0x231/0x270 kernel/locking/rwsem.c:1563
kernfs_activate+0x76/0x3a0 fs/kernfs/dir.c:1351
kernfs_add_one+0x465/0x560 fs/kernfs/dir.c:786
__kernfs_create_file+0x232/0x2e0 fs/kernfs/file.c:1072
sysfs_add_file_mode_ns+0x21d/0x330 fs/sysfs/file.c:294
create_files fs/sysfs/group.c:64 [inline]
internal_create_group+0x55c/0xf50 fs/sysfs/group.c:148
internal_create_groups fs/sysfs/group.c:188 [inline]
sysfs_create_groups+0x5d/0x130 fs/sysfs/group.c:214
setup_port drivers/infiniband/core/sysfs.c:1251 [inline]
ib_setup_port_attrs+0xe3f/0x22a0 drivers/infiniband/core/sysfs.c:1435
add_one_compat_dev+0x4f7/0x6e0 drivers/infiniband/core/device.c:969
rdma_dev_init_net+0x1f7/0x280 drivers/infiniband/core/device.c:1185
ops_init+0x353/0x5d0 net/core/net_namespace.c:135
setup_net+0x4bb/0xc10 net/core/net_namespace.c:332
copy_net_ns+0x359/0x5b0 net/core/net_namespace.c:478
create_new_namespaces+0x4db/0x8e0 kernel/nsproxy.c:110
copy_namespaces+0x333/0x390 kernel/nsproxy.c:178
copy_process+0x1a55/0x3fc0 kernel/fork.c:2256
kernel_clone+0x227/0x640 kernel/fork.c:2671
__do_sys_clone3 kernel/fork.c:2970 [inline]
__se_sys_clone3+0x372/0x410 kernel/fork.c:2954
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f415788c0d9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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:00007f41585cc038 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3
RAX: ffffffffffffffda RBX: 00007f41579ac050 RCX: 00007f415788c0d9
RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00007f41585cc050
RBP: 00007f41578e7ae9 R08: 0000000000000000 R09: 0000000000000058
R10: 00007f41585cc050 R11: 0000000000000246 R12: 0000000000000058
R13: 00007fff9a51278f R14: 00007f41585cc300 R15: 0000000000022000