INFO: task syz-executor.2:10261 can't die for more than 143 seconds.
task:syz-executor.2  state:D stack:27064 pid:10261 ppid:  8449 flags:0x00000004
Call Trace:
 context_switch kernel/sched/core.c:4373 [inline]
 __schedule+0x90c/0x21a0 kernel/sched/core.c:5124
 schedule+0xcf/0x270 kernel/sched/core.c:5203
 rwsem_down_write_slowpath+0x7e5/0x1200 kernel/locking/rwsem.c:1106
 __down_write_common kernel/locking/rwsem.c:1261 [inline]
 __down_write_common kernel/locking/rwsem.c:1258 [inline]
 __down_write kernel/locking/rwsem.c:1270 [inline]
 down_write+0x132/0x150 kernel/locking/rwsem.c:1407
 inode_lock include/linux/fs.h:773 [inline]
 lock_mount+0x8a/0x2e0 fs/namespace.c:2204
 do_new_mount_fc fs/namespace.c:2832 [inline]
 do_new_mount fs/namespace.c:2891 [inline]
 path_mount+0x1678/0x1e70 fs/namespace.c:3220
 do_mount fs/namespace.c:3233 [inline]
 __do_sys_mount fs/namespace.c:3441 [inline]
 __se_sys_mount fs/namespace.c:3418 [inline]
 __x64_sys_mount+0x27f/0x300 fs/namespace.c:3418
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45e219
RSP: 002b:00007f1d01bfac68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 000000000045e219
RDX: 0000000020002100 RSI: 00000000200020c0 RDI: 0000000000000000
RBP: 000000000119bfd0 R08: 0000000020000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c
R13: 00007ffd0d24926f R14: 00007f1d01bfb9c0 R15: 000000000119bf8c
INFO: task syz-executor.2:10261 blocked for more than 143 seconds.
      Not tainted 5.11.0-rc4-next-20210119-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2  state:D stack:27064 pid:10261 ppid:  8449 flags:0x00000004
Call Trace:
 context_switch kernel/sched/core.c:4373 [inline]
 __schedule+0x90c/0x21a0 kernel/sched/core.c:5124
 schedule+0xcf/0x270 kernel/sched/core.c:5203
 rwsem_down_write_slowpath+0x7e5/0x1200 kernel/locking/rwsem.c:1106
 __down_write_common kernel/locking/rwsem.c:1261 [inline]
 __down_write_common kernel/locking/rwsem.c:1258 [inline]
 __down_write kernel/locking/rwsem.c:1270 [inline]
 down_write+0x132/0x150 kernel/locking/rwsem.c:1407
 inode_lock include/linux/fs.h:773 [inline]
 lock_mount+0x8a/0x2e0 fs/namespace.c:2204
 do_new_mount_fc fs/namespace.c:2832 [inline]
 do_new_mount fs/namespace.c:2891 [inline]
 path_mount+0x1678/0x1e70 fs/namespace.c:3220
 do_mount fs/namespace.c:3233 [inline]
 __do_sys_mount fs/namespace.c:3441 [inline]
 __se_sys_mount fs/namespace.c:3418 [inline]
 __x64_sys_mount+0x27f/0x300 fs/namespace.c:3418
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45e219
RSP: 002b:00007f1d01bfac68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 000000000045e219
RDX: 0000000020002100 RSI: 00000000200020c0 RDI: 0000000000000000
RBP: 000000000119bfd0 R08: 0000000020000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c
R13: 00007ffd0d24926f R14: 00007f1d01bfb9c0 R15: 000000000119bf8c
INFO: task syz-executor.2:10268 can't die for more than 144 seconds.
task:syz-executor.2  state:R  running task     stack:26872 pid:10268 ppid:  8449 flags:0x00004006
Call Trace:
INFO: task syz-executor.2:10270 can't die for more than 144 seconds.
task:syz-executor.2  state:D stack:29288 pid:10270 ppid:  8449 flags:0x00000004
Call Trace:
 context_switch kernel/sched/core.c:4373 [inline]
 __schedule+0x90c/0x21a0 kernel/sched/core.c:5124
 schedule+0xcf/0x270 kernel/sched/core.c:5203
 rwsem_down_write_slowpath+0x7e5/0x1200 kernel/locking/rwsem.c:1106
 __down_write_common kernel/locking/rwsem.c:1261 [inline]
 __down_write_common kernel/locking/rwsem.c:1258 [inline]
 __down_write kernel/locking/rwsem.c:1270 [inline]
 down_write+0x132/0x150 kernel/locking/rwsem.c:1407
 inode_lock include/linux/fs.h:773 [inline]
 vfs_setxattr+0x117/0x320 fs/xattr.c:290
 setxattr+0x1ff/0x290 fs/xattr.c:553
 path_setxattr+0x170/0x190 fs/xattr.c:572
 __do_sys_lsetxattr fs/xattr.c:594 [inline]
 __se_sys_lsetxattr fs/xattr.c:590 [inline]
 __x64_sys_lsetxattr+0xbd/0x150 fs/xattr.c:590
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45e219
RSP: 002b:00007f1d01bb8c68 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 000000000045e219
RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000020000280
RBP: 000000000119c120 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c0dc
R13: 00007ffd0d24926f R14: 00007f1d01bb99c0 R15: 000000000119c0dc
INFO: task syz-executor.2:10270 blocked for more than 144 seconds.
      Not tainted 5.11.0-rc4-next-20210119-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2  state:D stack:29288 pid:10270 ppid:  8449 flags:0x00000004
Call Trace:
 context_switch kernel/sched/core.c:4373 [inline]
 __schedule+0x90c/0x21a0 kernel/sched/core.c:5124
 schedule+0xcf/0x270 kernel/sched/core.c:5203
 rwsem_down_write_slowpath+0x7e5/0x1200 kernel/locking/rwsem.c:1106
 __down_write_common kernel/locking/rwsem.c:1261 [inline]
 __down_write_common kernel/locking/rwsem.c:1258 [inline]
 __down_write kernel/locking/rwsem.c:1270 [inline]
 down_write+0x132/0x150 kernel/locking/rwsem.c:1407
 inode_lock include/linux/fs.h:773 [inline]
 vfs_setxattr+0x117/0x320 fs/xattr.c:290
 setxattr+0x1ff/0x290 fs/xattr.c:553
 path_setxattr+0x170/0x190 fs/xattr.c:572
 __do_sys_lsetxattr fs/xattr.c:594 [inline]
 __se_sys_lsetxattr fs/xattr.c:590 [inline]
 __x64_sys_lsetxattr+0xbd/0x150 fs/xattr.c:590
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45e219
RSP: 002b:00007f1d01bb8c68 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 000000000045e219
RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000020000280
RBP: 000000000119c120 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c0dc
R13: 00007ffd0d24926f R14: 00007f1d01bb99c0 R15: 000000000119c0dc
INFO: task syz-executor.2:10293 can't die for more than 145 seconds.
task:syz-executor.2  state:D stack:29584 pid:10293 ppid:  8449 flags:0x00000004
Call Trace:
 context_switch kernel/sched/core.c:4373 [inline]
 __schedule+0x90c/0x21a0 kernel/sched/core.c:5124
 schedule+0xcf/0x270 kernel/sched/core.c:5203
 rwsem_down_write_slowpath+0x7e5/0x1200 kernel/locking/rwsem.c:1106
 __down_write_common kernel/locking/rwsem.c:1261 [inline]
 __down_write_common kernel/locking/rwsem.c:1258 [inline]
 __down_write kernel/locking/rwsem.c:1270 [inline]
 down_write+0x132/0x150 kernel/locking/rwsem.c:1407
 inode_lock include/linux/fs.h:773 [inline]
 vfs_setxattr+0x117/0x320 fs/xattr.c:290
 setxattr+0x1ff/0x290 fs/xattr.c:553
 path_setxattr+0x170/0x190 fs/xattr.c:572
 __do_sys_lsetxattr fs/xattr.c:594 [inline]
 __se_sys_lsetxattr fs/xattr.c:590 [inline]
 __x64_sys_lsetxattr+0xbd/0x150 fs/xattr.c:590
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45e219
RSP: 002b:00007f1d01b55c68 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 000000000045e219
RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000020000280
RBP: 000000000119c318 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c2d4
R13: 00007ffd0d24926f R14: 00007f1d01b569c0 R15: 000000000119c2d4
INFO: task syz-executor.2:10293 blocked for more than 145 seconds.
      Not tainted 5.11.0-rc4-next-20210119-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2  state:D stack:29584 pid:10293 ppid:  8449 flags:0x00000004
Call Trace:
 context_switch kernel/sched/core.c:4373 [inline]
 __schedule+0x90c/0x21a0 kernel/sched/core.c:5124
 schedule+0xcf/0x270 kernel/sched/core.c:5203
 rwsem_down_write_slowpath+0x7e5/0x1200 kernel/locking/rwsem.c:1106
 __down_write_common kernel/locking/rwsem.c:1261 [inline]
 __down_write_common kernel/locking/rwsem.c:1258 [inline]
 __down_write kernel/locking/rwsem.c:1270 [inline]
 down_write+0x132/0x150 kernel/locking/rwsem.c:1407
 inode_lock include/linux/fs.h:773 [inline]
 vfs_setxattr+0x117/0x320 fs/xattr.c:290
 setxattr+0x1ff/0x290 fs/xattr.c:553
 path_setxattr+0x170/0x190 fs/xattr.c:572
 __do_sys_lsetxattr fs/xattr.c:594 [inline]
 __se_sys_lsetxattr fs/xattr.c:590 [inline]
 __x64_sys_lsetxattr+0xbd/0x150 fs/xattr.c:590
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45e219
RSP: 002b:00007f1d01b55c68 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 000000000045e219
RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000020000280
RBP: 000000000119c318 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c2d4
R13: 00007ffd0d24926f R14: 00007f1d01b569c0 R15: 000000000119c2d4

Showing all locks held in the system:
2 locks held by kworker/u4:3/120:
 #0: ffff8880b9e34fd8 (&rq->lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1322 [inline]
 #0: ffff8880b9e34fd8 (&rq->lock){-.-.}-{2:2}, at: __schedule+0x217/0x21a0 kernel/sched/core.c:5041
 #1: ffff8880b9e20088 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x305/0x440 kernel/sched/psi.c:833
1 lock held by khungtaskd/1665:
 #0: ffffffff8b370da0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6326
1 lock held by khugepaged/1672:
1 lock held by in:imklog/8140:
 #0: ffff888020a90d70 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:947
1 lock held by syz-executor.2/10261:
 #0: ffff888077df8150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:773 [inline]
 #0: ffff888077df8150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: lock_mount+0x8a/0x2e0 fs/namespace.c:2204
2 locks held by syz-executor.2/10268:
2 locks held by syz-executor.2/10270:
 #0: ffff88807a1aa460 (sb_writers#15){.+.+}-{0:0}, at: path_setxattr+0xb5/0x190 fs/xattr.c:570
 #1: ffff888077df8150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:773 [inline]
 #1: ffff888077df8150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: vfs_setxattr+0x117/0x320 fs/xattr.c:290
2 locks held by syz-executor.2/10293:
 #0: ffff88807a1aa460 (sb_writers#15){.+.+}-{0:0}, at: path_setxattr+0xb5/0x190 fs/xattr.c:570
 #1: ffff888077df8150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:773 [inline]
 #1: ffff888077df8150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: vfs_setxattr+0x117/0x320 fs/xattr.c:290

=============================================

NMI backtrace for cpu 1
CPU: 1 PID: 1665 Comm: khungtaskd Not tainted 5.11.0-rc4-next-20210119-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x107/0x163 lib/dump_stack.c:120
 nmi_cpu_backtrace.cold+0x44/0xd7 lib/nmi_backtrace.c:105
 nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:147 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:253 [inline]
 watchdog+0xd89/0xf30 kernel/hung_task.c:338
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 120 Comm: kworker/u4:3 Not tainted 5.11.0-rc4-next-20210119-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: phy14 ieee80211_iface_work
RIP: 0010:jhash2 include/linux/jhash.h:129 [inline]
RIP: 0010:hash_stack lib/stackdepot.c:156 [inline]
RIP: 0010:stack_depot_save+0xaa/0x4e0 lib/stackdepot.c:248
Code: 01 df c1 c0 06 44 31 c0 29 c3 41 89 d8 89 c3 01 f8 c1 c3 08 44 31 c3 41 89 d8 29 df 01 c3 41 c1 c0 10 44 31 c7 41 89 f8 29 f8 <01> df 41 c1 c8 0d 44 31 c0 41 89 c0 29 c3 01 f8 41 c1 c0 04 44 31
RSP: 0018:ffffc900012eed58 EFLAGS: 00000286
RAX: 00000000966819e8 RBX: 000000008861e085 RCX: 0000000000000003
RDX: ffffc900012eee1c RSI: 0000000000000b20 RDI: 0000000020d61b32
RBP: ffffc900012eedc8 R08: 0000000020d61b32 R09: ffffffff8d76778c
R10: 0000000000082083 R11: 000000000000015f R12: 000000000000000c
R13: 000000000000000c R14: ffff8880228ab547 R15: ffff8880228ab55f
FS:  0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2af640e028 CR3: 0000000012e77000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 kasan_save_stack+0x32/0x40 mm/kasan/common.c:40
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:403 [inline]
 ____kasan_kmalloc mm/kasan/common.c:434 [inline]
 ____kasan_kmalloc.constprop.0+0xa0/0xd0 mm/kasan/common.c:406
 kmalloc include/linux/slab.h:561 [inline]
 kzalloc include/linux/slab.h:686 [inline]
 cfg80211_inform_single_bss_frame_data+0x2fc/0xe90 net/wireless/scan.c:2372
 cfg80211_inform_bss_frame_data+0xa7/0xb10 net/wireless/scan.c:2433
 ieee80211_bss_info_update+0x3ce/0xb20 net/mac80211/scan.c:190
 ieee80211_rx_bss_info net/mac80211/ibss.c:1126 [inline]
 ieee80211_rx_mgmt_probe_beacon+0xccd/0x16b0 net/mac80211/ibss.c:1615
 ieee80211_ibss_rx_queued_mgmt+0xe3e/0x1870 net/mac80211/ibss.c:1642
 ieee80211_iface_work+0x761/0x9e0 net/mac80211/iface.c:1423
 process_one_work+0x98d/0x15f0 kernel/workqueue.c:2275
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2421
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296