INFO: task khugepaged:1650 blocked for more than 143 seconds. Not tainted 5.12.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:khugepaged state:D stack:27296 pid: 1650 ppid: 2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:4339 [inline] __schedule+0x916/0x23e0 kernel/sched/core.c:5147 schedule+0xcf/0x270 kernel/sched/core.c:5226 schedule_timeout+0x1db/0x250 kernel/time/timer.c:1868 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x168/0x270 kernel/sched/completion.c:138 __flush_work+0x527/0xac0 kernel/workqueue.c:3052 __lru_add_drain_all+0x3fd/0x760 mm/swap.c:842 khugepaged_do_scan mm/khugepaged.c:2202 [inline] khugepaged+0x10f/0x5530 mm/khugepaged.c:2263 kthread+0x3b1/0x4a0 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 INFO: task syz-executor.5:23526 blocked for more than 143 seconds. Not tainted 5.12.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:26360 pid:23526 ppid: 8747 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4339 [inline] __schedule+0x916/0x23e0 kernel/sched/core.c:5147 schedule+0xcf/0x270 kernel/sched/core.c:5226 synchronize_rcu_expedited+0x453/0x620 kernel/rcu/tree_exp.h:853 synchronize_rcu+0xdf/0x180 kernel/rcu/tree.c:3787 account_event kernel/events/core.c:11393 [inline] perf_event_alloc.part.0+0x33d4/0x3b50 kernel/events/core.c:11618 perf_event_alloc kernel/events/core.c:11938 [inline] __do_sys_perf_event_open+0x4ad/0x2df0 kernel/events/core.c:12036 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 RSP: 002b:00007f0a2e0fa188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 RDX: bfffffffffffffff RSI: 0000000000000000 RDI: 0000000020000400 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 000000000056bf80 R13: 00007fff2623e83f R14: 00007f0a2e0fa300 R15: 0000000000022000 INFO: task syz-executor.5:23535 blocked for more than 144 seconds. Not tainted 5.12.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:26360 pid:23535 ppid: 8747 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4339 [inline] __schedule+0x916/0x23e0 kernel/sched/core.c:5147 schedule+0xcf/0x270 kernel/sched/core.c:5226 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5285 __mutex_lock_common kernel/locking/mutex.c:1026 [inline] __mutex_lock+0x81f/0x1120 kernel/locking/mutex.c:1096 account_event kernel/events/core.c:11385 [inline] perf_event_alloc.part.0+0x3262/0x3b50 kernel/events/core.c:11618 perf_event_alloc kernel/events/core.c:11938 [inline] __do_sys_perf_event_open+0x4ad/0x2df0 kernel/events/core.c:12036 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 RSP: 002b:00007f0a2e0d9188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665d9 RDX: bfffffffffffffff RSI: 0000000000000000 RDI: 0000000020000400 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 000000000056c038 R13: 00007fff2623e83f R14: 00007f0a2e0d9300 R15: 0000000000022000 INFO: task syz-executor.4:23523 blocked for more than 144 seconds. Not tainted 5.12.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:27640 pid:23523 ppid: 8472 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4339 [inline] __schedule+0x916/0x23e0 kernel/sched/core.c:5147 schedule+0xcf/0x270 kernel/sched/core.c:5226 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5285 __mutex_lock_common kernel/locking/mutex.c:1026 [inline] __mutex_lock+0x81f/0x1120 kernel/locking/mutex.c:1096 exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline] synchronize_rcu_expedited+0x27e/0x620 kernel/rcu/tree_exp.h:837 synchronize_net+0x3c/0x60 net/core/dev.c:10911 netif_napi_del include/linux/netdevice.h:2500 [inline] tun_napi_del drivers/net/tun.c:280 [inline] __tun_detach+0x1cc/0x13d0 drivers/net/tun.c:633 tun_detach drivers/net/tun.c:687 [inline] tun_chr_close+0xd9/0x180 drivers/net/tun.c:3397 __fput+0x288/0x920 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:174 [inline] exit_to_user_mode_prepare+0x272/0x280 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:301 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:57 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4193eb RSP: 002b:00007fff52ae85d0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00000000004193eb RDX: 0000000000571638 RSI: ffffffff891628fe RDI: 0000000000000003 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b2cd26900 R10: 00000000000012e1 R11: 0000000000000293 R12: 0000000000084373 R13: 00000000000003e8 R14: 000000000056bf80 R15: 0000000000084334 INFO: task syz-executor.1:23531 blocked for more than 144 seconds. Not tainted 5.12.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:29592 pid:23531 ppid: 8460 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4339 [inline] __schedule+0x916/0x23e0 kernel/sched/core.c:5147 schedule+0xcf/0x270 kernel/sched/core.c:5226 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5285 __mutex_lock_common kernel/locking/mutex.c:1026 [inline] __mutex_lock+0x81f/0x1120 kernel/locking/mutex.c:1096 account_event kernel/events/core.c:11385 [inline] perf_event_alloc.part.0+0x3262/0x3b50 kernel/events/core.c:11618 perf_event_alloc kernel/events/core.c:11938 [inline] __do_sys_perf_event_open+0x4ad/0x2df0 kernel/events/core.c:12036 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 RSP: 002b:00007fd0bcf46188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000180 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffcd90e298f R14: 00007fd0bcf46300 R15: 0000000000022000 INFO: task syz-executor.1:23536 blocked for more than 145 seconds. Not tainted 5.12.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:28144 pid:23536 ppid: 8460 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4339 [inline] __schedule+0x916/0x23e0 kernel/sched/core.c:5147 schedule+0xcf/0x270 kernel/sched/core.c:5226 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5285 __mutex_lock_common kernel/locking/mutex.c:1026 [inline] __mutex_lock+0x81f/0x1120 kernel/locking/mutex.c:1096 account_event kernel/events/core.c:11385 [inline] perf_event_alloc.part.0+0x3262/0x3b50 kernel/events/core.c:11618 perf_event_alloc kernel/events/core.c:11938 [inline] __do_sys_perf_event_open+0x4ad/0x2df0 kernel/events/core.c:12036 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 RSP: 002b:00007fd0bcf25188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665d9 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000180 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 000000000056c038 R13: 00007ffcd90e298f R14: 00007fd0bcf25300 R15: 0000000000022000 INFO: task syz-executor.3:23537 blocked for more than 145 seconds. Not tainted 5.12.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:27616 pid:23537 ppid: 8464 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4339 [inline] __schedule+0x916/0x23e0 kernel/sched/core.c:5147 schedule+0xcf/0x270 kernel/sched/core.c:5226 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5285 __mutex_lock_common kernel/locking/mutex.c:1026 [inline] __mutex_lock+0x81f/0x1120 kernel/locking/mutex.c:1096 __netlink_dump_start+0x16a/0x900 net/netlink/af_netlink.c:2345 netlink_dump_start include/linux/netlink.h:258 [inline] rtnetlink_rcv_msg+0x70e/0xad0 net/core/rtnetlink.c:5525 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2502 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1338 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927 sock_sendmsg_nosec net/socket.c:654 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:674 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2350 ___sys_sendmsg+0xf3/0x170 net/socket.c:2404 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2433 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 RSP: 002b:00007f878e70a188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665d9 RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000003 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c038 R13: 00007fff6d185aff R14: 00007f878e70a300 R15: 0000000000022000 INFO: task syz-executor.3:23557 blocked for more than 146 seconds. Not tainted 5.12.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:27616 pid:23557 ppid: 8464 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4339 [inline] __schedule+0x916/0x23e0 kernel/sched/core.c:5147 schedule+0xcf/0x270 kernel/sched/core.c:5226 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5285 __mutex_lock_common kernel/locking/mutex.c:1026 [inline] __mutex_lock+0x81f/0x1120 kernel/locking/mutex.c:1096 __netlink_dump_start+0x16a/0x900 net/netlink/af_netlink.c:2345 netlink_dump_start include/linux/netlink.h:258 [inline] rtnetlink_rcv_msg+0x70e/0xad0 net/core/rtnetlink.c:5525 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2502 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1338 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927 sock_sendmsg_nosec net/socket.c:654 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:674 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2350 ___sys_sendmsg+0xf3/0x170 net/socket.c:2404 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2433 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 RSP: 002b:00007f878e686188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056c318 RCX: 00000000004665d9 RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000003 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c318 R13: 00007fff6d185aff R14: 00007f878e686300 R15: 0000000000022000 INFO: task syz-executor.0:23541 blocked for more than 146 seconds. Not tainted 5.12.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:29568 pid:23541 ppid: 8458 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4339 [inline] __schedule+0x916/0x23e0 kernel/sched/core.c:5147 schedule+0xcf/0x270 kernel/sched/core.c:5226 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5285 __mutex_lock_common kernel/locking/mutex.c:1026 [inline] __mutex_lock+0x81f/0x1120 kernel/locking/mutex.c:1096 devinet_ioctl+0x1b3/0x1c90 net/ipv4/devinet.c:1066 inet_ioctl+0x230/0x330 net/ipv4/af_inet.c:958 sock_do_ioctl+0xcb/0x2d0 net/socket.c:1039 sock_ioctl+0x477/0x6a0 net/socket.c:1179 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:1069 [inline] __se_sys_ioctl fs/ioctl.c:1055 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:1055 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 RSP: 002b:00007fe1d2680188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 RDX: 00000000200007c0 RSI: 0000000000008915 RDI: 0000000000000003 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffefd118f3f R14: 00007fe1d2680300 R15: 0000000000022000 INFO: task syz-executor.0:23545 blocked for more than 147 seconds. Not tainted 5.12.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:29408 pid:23545 ppid: 8458 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4339 [inline] __schedule+0x916/0x23e0 kernel/sched/core.c:5147 schedule+0xcf/0x270 kernel/sched/core.c:5226 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5285 __mutex_lock_common kernel/locking/mutex.c:1026 [inline] __mutex_lock+0x81f/0x1120 kernel/locking/mutex.c:1096 wext_ioctl_dispatch net/wireless/wext-core.c:987 [inline] wext_ioctl_dispatch net/wireless/wext-core.c:976 [inline] wext_handle_ioctl+0x120/0x280 net/wireless/wext-core.c:1049 sock_ioctl+0x410/0x6a0 net/socket.c:1111 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:1069 [inline] __se_sys_ioctl fs/ioctl.c:1055 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:1055 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 RSP: 002b:00007fe1d265f188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665d9 RDX: 00000000200007c0 RSI: 0000000000008b0b RDI: 0000000000000004 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c038 R13: 00007ffefd118f3f R14: 00007fe1d265f300 R15: 0000000000022000 Showing all locks held in the system: 2 locks held by kworker/0:1/7: 4 locks held by kworker/u4:0/9: 1 lock held by khungtaskd/1608: #0: ffffffff8bf79760 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6333 1 lock held by kcompactd0/1647: #0: ffffffff8c0993a8 (pcpu_drain_mutex){+.+.}-{3:3}, at: __drain_all_pages+0x4f/0x6c0 mm/page_alloc.c:3123 1 lock held by khugepaged/1650: #0: ffffffff8c05a4c8 (lock#5){+.+.}-{3:3}, at: __lru_add_drain_all+0x65/0x760 mm/swap.c:791 1 lock held by in:imklog/8145: #0: ffff888027cd7c70 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:974 2 locks held by syz-executor.5/23526: #0: ffffffff8c042be8 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11385 [inline] #0: ffffffff8c042be8 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x3262/0x3b50 kernel/events/core.c:11618 #1: ffffffff8bf82968 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline] #1: ffffffff8bf82968 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x4fa/0x620 kernel/rcu/tree_exp.h:837 1 lock held by syz-executor.5/23535: #0: ffffffff8c042be8 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11385 [inline] #0: ffffffff8c042be8 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x3262/0x3b50 kernel/events/core.c:11618 2 locks held by syz-executor.4/23523: #0: ffffffff8d6a4ca8 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:684 [inline] #0: ffffffff8d6a4ca8 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3a/0x180 drivers/net/tun.c:3397 #1: ffffffff8bf82968 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline] #1: ffffffff8bf82968 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x27e/0x620 kernel/rcu/tree_exp.h:837 1 lock held by syz-executor.1/23531: #0: ffffffff8c042be8 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11385 [inline] #0: ffffffff8c042be8 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x3262/0x3b50 kernel/events/core.c:11618 1 lock held by syz-executor.1/23536: #0: ffffffff8c042be8 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11385 [inline] #0: ffffffff8c042be8 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x3262/0x3b50 kernel/events/core.c:11618 1 lock held by syz-executor.3/23537: #0: ffffffff8d6a4ca8 (rtnl_mutex){+.+.}-{3:3}, at: __netlink_dump_start+0x16a/0x900 net/netlink/af_netlink.c:2345 1 lock held by syz-executor.3/23557: #0: ffffffff8d6a4ca8 (rtnl_mutex){+.+.}-{3:3}, at: __netlink_dump_start+0x16a/0x900 net/netlink/af_netlink.c:2345 1 lock held by syz-executor.0/23541: #0: ffffffff8d6a4ca8 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x1b3/0x1c90 net/ipv4/devinet.c:1066 1 lock held by syz-executor.0/23545: #0: ffffffff8d6a4ca8 (rtnl_mutex){+.+.}-{3:3}, at: wext_ioctl_dispatch net/wireless/wext-core.c:987 [inline] #0: ffffffff8d6a4ca8 (rtnl_mutex){+.+.}-{3:3}, at: wext_ioctl_dispatch net/wireless/wext-core.c:976 [inline] #0: ffffffff8d6a4ca8 (rtnl_mutex){+.+.}-{3:3}, at: wext_handle_ioctl+0x120/0x280 net/wireless/wext-core.c:1049 1 lock held by syz-executor.0/23560: #0: ffffffff8d6a4ca8 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x1b3/0x1c90 net/ipv4/devinet.c:1066 1 lock held by syz-executor.0/23562: #0: ffffffff8d6a4ca8 (rtnl_mutex){+.+.}-{3:3}, at: wext_ioctl_dispatch net/wireless/wext-core.c:987 [inline] #0: ffffffff8d6a4ca8 (rtnl_mutex){+.+.}-{3:3}, at: wext_ioctl_dispatch net/wireless/wext-core.c:976 [inline] #0: ffffffff8d6a4ca8 (rtnl_mutex){+.+.}-{3:3}, at: wext_handle_ioctl+0x120/0x280 net/wireless/wext-core.c:1049 1 lock held by syz-executor.2/23546: #0: ffffffff8c042be8 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11385 [inline] #0: ffffffff8c042be8 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x3262/0x3b50 kernel/events/core.c:11618 1 lock held by syz-executor.2/23564: #0: ffffffff8c042be8 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11385 [inline] #0: ffffffff8c042be8 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x3262/0x3b50 kernel/events/core.c:11618 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1608 Comm: khungtaskd Not tainted 5.12.0-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+0x141/0x1d7 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:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:209 [inline] watchdog+0xd48/0xfb0 kernel/hung_task.c:294 kthread+0x3b1/0x4a0 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 4852 Comm: systemd-journal Not tainted 5.12.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:stack_access_ok+0x1b/0x120 arch/x86/kernel/unwind_orc.c:338 Code: 00 eb c4 48 89 ef e8 74 ae 86 00 eb de 66 90 48 b8 00 00 00 00 00 fc ff df 48 89 f9 41 54 49 89 fc 55 48 c1 e9 03 48 89 f5 53 <48> 83 ec 08 0f b6 04 01 84 c0 74 08 3c 03 0f 8e aa 00 00 00 41 8b RSP: 0018:ffffc9000137f908 EFLAGS: 00000a02 RAX: dffffc0000000000 RBX: 1ffff9200026ff2d RCX: 1ffff9200026ff40 RDX: 00000000000000a8 RSI: ffffc9000137ff58 RDI: ffffc9000137fa00 RBP: ffffc9000137ff58 R08: ffffffff8ed7d46c R09: 0000000000000001 R10: fffff5200026ff4b R11: 0000000000084087 R12: ffffc9000137fa00 R13: ffffc9000137fa35 R14: ffffc9000137fa00 R15: ffffc9000137ff58 FS: 00007efe4f4ee8c0(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007efe4ca64000 CR3: 000000001801e000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: deref_stack_regs arch/x86/kernel/unwind_orc.c:367 [inline] unwind_next_frame+0xf9c/0x1ce0 arch/x86/kernel/unwind_orc.c:547 arch_stack_walk+0x7d/0xe0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38 kasan_set_track+0x1c/0x30 mm/kasan/common.c:46 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:357 ____kasan_slab_free mm/kasan/common.c:360 [inline] ____kasan_slab_free mm/kasan/common.c:325 [inline] __kasan_slab_free+0xfb/0x130 mm/kasan/common.c:368 kasan_slab_free include/linux/kasan.h:212 [inline] slab_free_hook mm/slub.c:1581 [inline] slab_free_freelist_hook+0xdf/0x240 mm/slub.c:1606 slab_free mm/slub.c:3166 [inline] kmem_cache_free+0x8a/0x740 mm/slub.c:3182 security_file_free+0xa4/0xd0 security/security.c:1533 file_free fs/file_table.c:55 [inline] __fput+0x3da/0x920 fs/file_table.c:298 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:174 [inline] exit_to_user_mode_prepare+0x272/0x280 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:301 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:57 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7efe4ea7d840 Code: 73 01 c3 48 8b 0d 68 77 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 89 bb 20 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 1e f6 ff ff 48 89 04 24 RSP: 002b:00007ffd7fcb5f08 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: fffffffffffffffe RBX: 00007ffd7fcb6210 RCX: 00007efe4ea7d840 RDX: 00000000000001a0 RSI: 0000000000080042 RDI: 000055828670b0e0 RBP: 000000000000000d R08: 00000000000001e0 R09: 00000000ffffffff R10: 0000000000000069 R11: 0000000000000246 R12: 00000000ffffffff R13: 00005582866fe040 R14: 00007ffd7fcb61d0 R15: 000055828670b130