INFO: task khugepaged:1636 blocked for more than 143 seconds. Not tainted 5.12.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:khugepaged state:D stack:28352 pid: 1636 ppid: 2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:4322 [inline] __schedule+0x911/0x21b0 kernel/sched/core.c:5073 schedule+0xcf/0x270 kernel/sched/core.c:5152 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+0x41f/0x6f0 mm/swap.c:826 khugepaged_do_scan mm/khugepaged.c:2213 [inline] khugepaged+0x10c/0x5510 mm/khugepaged.c:2274 kthread+0x3b1/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 INFO: task kworker/u4:8:15516 blocked for more than 143 seconds. Not tainted 5.12.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:8 state:D stack:24928 pid:15516 ppid: 2 flags:0x00004000 Workqueue: events_unbound fsnotify_mark_destroy_workfn Call Trace: context_switch kernel/sched/core.c:4322 [inline] __schedule+0x911/0x21b0 kernel/sched/core.c:5073 schedule+0xcf/0x270 kernel/sched/core.c:5152 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 __synchronize_srcu+0x1a6/0x280 kernel/rcu/srcutree.c:935 fsnotify_mark_destroy_workfn+0xfd/0x340 fs/notify/mark.c:836 process_one_work+0x98d/0x1600 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:294 INFO: task kworker/0:8:23829 blocked for more than 144 seconds. Not tainted 5.12.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:8 state:D stack:27032 pid:23829 ppid: 2 flags:0x00004000 Workqueue: events switchdev_deferred_process_work Call Trace: context_switch kernel/sched/core.c:4322 [inline] __schedule+0x911/0x21b0 kernel/sched/core.c:5073 schedule+0xcf/0x270 kernel/sched/core.c:5152 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5211 __mutex_lock_common kernel/locking/mutex.c:1026 [inline] __mutex_lock+0x81f/0x1120 kernel/locking/mutex.c:1096 switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:74 process_one_work+0x98d/0x1600 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:294 INFO: task syz-executor.1:28475 blocked for more than 144 seconds. Not tainted 5.12.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:26776 pid:28475 ppid: 8413 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4322 [inline] __schedule+0x911/0x21b0 kernel/sched/core.c:5073 schedule+0xcf/0x270 kernel/sched/core.c:5152 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5211 __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:836 synchronize_rcu+0xdf/0x180 kernel/rcu/tree.c:3767 rcu_sync_enter+0x147/0x2e0 kernel/rcu/sync.c:149 percpu_down_write+0x9d/0x440 kernel/locking/percpu-rwsem.c:220 ext4_ind_migrate+0x237/0x840 fs/ext4/migrate.c:623 ext4_ioctl_setflags+0xab5/0xc50 fs/ext4/ioctl.c:454 __ext4_ioctl+0x392a/0x50e0 fs/ext4/ioctl.c:863 ext4_ioctl+0x46/0x90 fs/ext4/ioctl.c:1332 vfs_ioctl fs/ioctl.c:48 [inline] __do_sys_ioctl fs/ioctl.c:753 [inline] __se_sys_ioctl fs/ioctl.c:739 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:739 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665f9 RSP: 002b:00007f8d5795c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 00000000004665f9 RDX: 0000000000400009 RSI: 0000000040086602 RDI: 0000000000000003 RBP: 00000000004bfce1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007ffc40333b0f R14: 00007f8d5795c300 R15: 0000000000022000 INFO: task syz-executor.1:28486 blocked for more than 144 seconds. Not tainted 5.12.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:28512 pid:28486 ppid: 8413 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4322 [inline] __schedule+0x911/0x21b0 kernel/sched/core.c:5073 schedule+0xcf/0x270 kernel/sched/core.c:5152 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+0x137/0x150 kernel/locking/rwsem.c:1407 inode_lock include/linux/fs.h:775 [inline] process_measurement+0x6fa/0x17e0 security/integrity/ima/ima_main.c:234 ima_file_check+0xb9/0x100 security/integrity/ima/ima_main.c:499 do_open fs/namei.c:3369 [inline] path_openat+0x15b5/0x27e0 fs/namei.c:3500 do_filp_open+0x190/0x3d0 fs/namei.c:3527 do_sys_openat2+0x16d/0x420 fs/open.c:1187 do_sys_open fs/open.c:1203 [inline] __do_sys_openat fs/open.c:1219 [inline] __se_sys_openat fs/open.c:1214 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1214 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665f9 RSP: 002b:00007f8d5793b188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 000000000056c008 RCX: 00000000004665f9 RDX: 0000000000007a05 RSI: 00000000200001c0 RDI: ffffffffffffff9c RBP: 00000000004bfce1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000001700 R11: 0000000000000246 R12: 000000000056c008 R13: 00007ffc40333b0f R14: 00007f8d5793b300 R15: 0000000000022000 INFO: task syz-executor.1:28492 blocked for more than 145 seconds. Not tainted 5.12.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:28512 pid:28492 ppid: 8413 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4322 [inline] __schedule+0x911/0x21b0 kernel/sched/core.c:5073 schedule+0xcf/0x270 kernel/sched/core.c:5152 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+0x137/0x150 kernel/locking/rwsem.c:1407 inode_lock include/linux/fs.h:775 [inline] process_measurement+0x6fa/0x17e0 security/integrity/ima/ima_main.c:234 ima_file_check+0xb9/0x100 security/integrity/ima/ima_main.c:499 do_open fs/namei.c:3369 [inline] path_openat+0x15b5/0x27e0 fs/namei.c:3500 do_filp_open+0x190/0x3d0 fs/namei.c:3527 do_sys_openat2+0x16d/0x420 fs/open.c:1187 do_sys_open fs/open.c:1203 [inline] __do_sys_openat fs/open.c:1219 [inline] __se_sys_openat fs/open.c:1214 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1214 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665f9 RSP: 002b:00007f8d5791a188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 000000000056c0b0 RCX: 00000000004665f9 RDX: 0000000000007a05 RSI: 0000000020000380 RDI: ffffffffffffff9c RBP: 00000000004bfce1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000001700 R11: 0000000000000246 R12: 000000000056c0b0 R13: 00007ffc40333b0f R14: 00007f8d5791a300 R15: 0000000000022000 INFO: task syz-executor.1:28497 blocked for more than 145 seconds. Not tainted 5.12.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:29480 pid:28497 ppid: 8413 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4322 [inline] __schedule+0x911/0x21b0 kernel/sched/core.c:5073 schedule+0xcf/0x270 kernel/sched/core.c:5152 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5211 __mutex_lock_common kernel/locking/mutex.c:1026 [inline] __mutex_lock+0x81f/0x1120 kernel/locking/mutex.c:1096 account_event kernel/events/core.c:11251 [inline] perf_event_alloc.part.0+0x3047/0x3960 kernel/events/core.c:11474 perf_event_alloc kernel/events/core.c:11785 [inline] __do_sys_perf_event_open+0x647/0x2e60 kernel/events/core.c:11883 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665f9 RSP: 002b:00007f8d578f9188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 000000000056c158 RCX: 00000000004665f9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200005c0 RBP: 00000000004bfce1 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 000000000056c158 R13: 00007ffc40333b0f R14: 00007f8d578f9300 R15: 0000000000022000 INFO: task syz-executor.1:28502 blocked for more than 145 seconds. Not tainted 5.12.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:28512 pid:28502 ppid: 8413 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4322 [inline] __schedule+0x911/0x21b0 kernel/sched/core.c:5073 schedule+0xcf/0x270 kernel/sched/core.c:5152 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+0x137/0x150 kernel/locking/rwsem.c:1407 inode_lock include/linux/fs.h:775 [inline] process_measurement+0x6fa/0x17e0 security/integrity/ima/ima_main.c:234 ima_file_check+0xb9/0x100 security/integrity/ima/ima_main.c:499 do_open fs/namei.c:3369 [inline] path_openat+0x15b5/0x27e0 fs/namei.c:3500 do_filp_open+0x190/0x3d0 fs/namei.c:3527 do_sys_openat2+0x16d/0x420 fs/open.c:1187 do_sys_open fs/open.c:1203 [inline] __do_sys_openat fs/open.c:1219 [inline] __se_sys_openat fs/open.c:1214 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1214 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665f9 RSP: 002b:00007f8d578b7188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 000000000056c2a8 RCX: 00000000004665f9 RDX: 0000000000007a05 RSI: 00000000200001c0 RDI: ffffffffffffff9c RBP: 00000000004bfce1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000001700 R11: 0000000000000246 R12: 000000000056c2a8 R13: 00007ffc40333b0f R14: 00007f8d578b7300 R15: 0000000000022000 INFO: task syz-executor.1:28508 blocked for more than 146 seconds. Not tainted 5.12.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:27984 pid:28508 ppid: 8413 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4322 [inline] __schedule+0x911/0x21b0 kernel/sched/core.c:5073 schedule+0xcf/0x270 kernel/sched/core.c:5152 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+0x137/0x150 kernel/locking/rwsem.c:1407 inode_lock include/linux/fs.h:775 [inline] process_measurement+0x6fa/0x17e0 security/integrity/ima/ima_main.c:234 ima_file_check+0xb9/0x100 security/integrity/ima/ima_main.c:499 do_open fs/namei.c:3369 [inline] path_openat+0x15b5/0x27e0 fs/namei.c:3500 do_filp_open+0x190/0x3d0 fs/namei.c:3527 do_sys_openat2+0x16d/0x420 fs/open.c:1187 do_sys_open fs/open.c:1203 [inline] __do_sys_openat fs/open.c:1219 [inline] __se_sys_openat fs/open.c:1214 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1214 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665f9 RSP: 002b:00007f8d57896188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 000000000056c350 RCX: 00000000004665f9 RDX: 0000000000007a05 RSI: 0000000020000380 RDI: ffffffffffffff9c RBP: 00000000004bfce1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000001700 R11: 0000000000000246 R12: 000000000056c350 R13: 00007ffc40333b0f R14: 00007f8d57896300 R15: 0000000000022000 INFO: task syz-executor.4:28476 blocked for more than 146 seconds. Not tainted 5.12.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:25080 pid:28476 ppid: 18773 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4322 [inline] __schedule+0x911/0x21b0 kernel/sched/core.c:5073 schedule+0xcf/0x270 kernel/sched/core.c:5152 exp_funnel_lock kernel/rcu/tree_exp.h:313 [inline] synchronize_rcu_expedited+0x5aa/0x620 kernel/rcu/tree_exp.h:836 synchronize_rcu+0xdf/0x180 kernel/rcu/tree.c:3767 nbp_vlan_flush+0xdb/0x1f0 net/bridge/br_vlan.c:1274 del_nbp+0x3d5/0xd40 net/bridge/br_if.c:346 br_del_if+0xf2/0x440 net/bridge/br_if.c:738 do_set_master+0xe1/0x220 net/core/rtnetlink.c:2506 do_setlink+0x990/0x3af0 net/core/rtnetlink.c:2724 __rtnl_newlink+0xdcf/0x1710 net/core/rtnetlink.c:3385 rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3500 rtnetlink_rcv_msg+0x44e/0xad0 net/core/rtnetlink.c:5562 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+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665f9 RSP: 002b:00007fe0627a6188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 00000000004665f9 RDX: 0000000000000000 RSI: 0000000020000600 RDI: 0000000000000003 RBP: 00000000004bfce1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007ffc7ab7a66f R14: 00007fe0627a6300 R15: 0000000000022000 Showing all locks held in the system: 4 locks held by kworker/u4:1/25: #0: ffff88806cad1938 ((wq_completion)phy58){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff88806cad1938 ((wq_completion)phy58){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline] #0: ffff88806cad1938 ((wq_completion)phy58){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff88806cad1938 ((wq_completion)phy58){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline] #0: ffff88806cad1938 ((wq_completion)phy58){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline] #0: ffff88806cad1938 ((wq_completion)phy58){+.+.}-{0:0}, at: process_one_work+0x871/0x1600 kernel/workqueue.c:2246 #1: ffffc90000dffda8 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1600 kernel/workqueue.c:2250 #2: ffff88801a578d00 (&wdev->mtx){+.+.}-{3:3}, at: sdata_lock net/mac80211/ieee80211_i.h:1016 [inline] #2: ffff88801a578d00 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x93/0xe80 net/mac80211/ibss.c:1683 #3: ffff888027e89610 (&local->sta_mtx){+.+.}-{3:3}, at: ieee80211_ibss_sta_expire net/mac80211/ibss.c:1262 [inline] #3: ffff888027e89610 (&local->sta_mtx){+.+.}-{3:3}, at: ieee80211_sta_merge_ibss net/mac80211/ibss.c:1305 [inline] #3: ffff888027e89610 (&local->sta_mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x481/0xe80 net/mac80211/ibss.c:1711 1 lock held by khungtaskd/1628: #0: ffffffff8bf74520 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6328 1 lock held by khugepaged/1636: #0: ffffffff8c053888 (lock#5){+.+.}-{3:3}, at: lru_add_drain_all+0x5f/0x6f0 mm/swap.c:777 1 lock held by in:imklog/8098: #0: ffff888012d5e5f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:974 2 locks held by kworker/0:5/9630: #0: ffff888010864d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010864d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline] #0: ffff888010864d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888010864d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline] #0: ffff888010864d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline] #0: ffff888010864d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x871/0x1600 kernel/workqueue.c:2246 #1: ffff8880b9c1f948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x305/0x440 kernel/sched/psi.c:833 2 locks held by kworker/u4:8/15516: #0: ffff888010869138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010869138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline] #0: ffff888010869138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888010869138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline] #0: ffff888010869138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline] #0: ffff888010869138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x871/0x1600 kernel/workqueue.c:2246 #1: ffffc90001a8fda8 ((reaper_work).work){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1600 kernel/workqueue.c:2250 3 locks held by kworker/0:0/20948: #0: ffff888021902138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888021902138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline] #0: ffff888021902138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888021902138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline] #0: ffff888021902138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline] #0: ffff888021902138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x871/0x1600 kernel/workqueue.c:2246 #1: ffffc9000208fda8 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1600 kernel/workqueue.c:2250 #2: ffffffff8d6730a8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4574 3 locks held by kworker/0:8/23829: #0: ffff888010864d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010864d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline] #0: ffff888010864d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888010864d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline] #0: ffff888010864d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline] #0: ffff888010864d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x871/0x1600 kernel/workqueue.c:2246 #1: ffffc90001cdfda8 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1600 kernel/workqueue.c:2250 #2: ffffffff8d6730a8 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:74 2 locks held by kworker/1:2/24066: 4 locks held by syz-executor.1/28475: #0: ffff888022c12460 (sb_writers#5){.+.+}-{0:0}, at: __ext4_ioctl+0x234b/0x50e0 fs/ext4/ioctl.c:854 #1: ffff88808d5ed488 (&sb->s_type->i_mutex_key#10){++++}-{3:3}, at: inode_lock include/linux/fs.h:775 [inline] #1: ffff88808d5ed488 (&sb->s_type->i_mutex_key#10){++++}-{3:3}, at: __ext4_ioctl+0x237b/0x50e0 fs/ext4/ioctl.c:858 #2: ffff888022c14ac0 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_ind_migrate+0x237/0x840 fs/ext4/migrate.c:623 #3: ffffffff8bf7d0e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline] #3: ffffffff8bf7d0e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x27e/0x620 kernel/rcu/tree_exp.h:836 2 locks held by syz-executor.1/28486: #0: ffff888022c12460 (sb_writers#5){.+.+}-{0:0}, at: do_open fs/namei.c:3360 [inline] #0: ffff888022c12460 (sb_writers#5){.+.+}-{0:0}, at: path_openat+0x1ad9/0x27e0 fs/namei.c:3500 #1: ffff88808d5ed488 (&sb->s_type->i_mutex_key#10){++++}-{3:3}, at: inode_lock include/linux/fs.h:775 [inline] #1: ffff88808d5ed488 (&sb->s_type->i_mutex_key#10){++++}-{3:3}, at: process_measurement+0x6fa/0x17e0 security/integrity/ima/ima_main.c:234 2 locks held by syz-executor.1/28492: #0: ffff888022c12460 (sb_writers#5){.+.+}-{0:0}, at: do_open fs/namei.c:3360 [inline] #0: ffff888022c12460 (sb_writers#5){.+.+}-{0:0}, at: path_openat+0x1ad9/0x27e0 fs/namei.c:3500 #1: ffff88808d5ed488 (&sb->s_type->i_mutex_key#10){++++}-{3:3}, at: inode_lock include/linux/fs.h:775 [inline] #1: ffff88808d5ed488 (&sb->s_type->i_mutex_key#10){++++}-{3:3}, at: process_measurement+0x6fa/0x17e0 security/integrity/ima/ima_main.c:234 1 lock held by syz-executor.1/28497: #0: ffffffff8c03c188 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11251 [inline] #0: ffffffff8c03c188 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x3047/0x3960 kernel/events/core.c:11474 2 locks held by syz-executor.1/28502: #0: ffff888022c12460 (sb_writers#5){.+.+}-{0:0}, at: do_open fs/namei.c:3360 [inline] #0: ffff888022c12460 (sb_writers#5){.+.+}-{0:0}, at: path_openat+0x1ad9/0x27e0 fs/namei.c:3500 #1: ffff88808d5ed488 (&sb->s_type->i_mutex_key#10){++++}-{3:3}, at: inode_lock include/linux/fs.h:775 [inline] #1: ffff88808d5ed488 (&sb->s_type->i_mutex_key#10){++++}-{3:3}, at: process_measurement+0x6fa/0x17e0 security/integrity/ima/ima_main.c:234 2 locks held by syz-executor.1/28508: #0: ffff888022c12460 (sb_writers#5){.+.+}-{0:0}, at: do_open fs/namei.c:3360 [inline] #0: ffff888022c12460 (sb_writers#5){.+.+}-{0:0}, at: path_openat+0x1ad9/0x27e0 fs/namei.c:3500 #1: ffff88808d5ed488 (&sb->s_type->i_mutex_key#10){++++}-{3:3}, at: inode_lock include/linux/fs.h:775 [inline] #1: ffff88808d5ed488 (&sb->s_type->i_mutex_key#10){++++}-{3:3}, at: process_measurement+0x6fa/0x17e0 security/integrity/ima/ima_main.c:234 1 lock held by syz-executor.4/28476: #0: ffffffff8d6730a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d6730a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3f9/0xad0 net/core/rtnetlink.c:5559 1 lock held by syz-executor.4/28482: #0: ffffffff8c03c188 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11251 [inline] #0: ffffffff8c03c188 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x3047/0x3960 kernel/events/core.c:11474 1 lock held by syz-executor.4/28491: #0: ffffffff8d6730a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d6730a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3f9/0xad0 net/core/rtnetlink.c:5559 1 lock held by syz-executor.4/28493: #0: ffffffff8d6730a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d6730a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3f9/0xad0 net/core/rtnetlink.c:5559 1 lock held by syz-executor.4/28503: #0: ffffffff8c03c188 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11251 [inline] #0: ffffffff8c03c188 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x3047/0x3960 kernel/events/core.c:11474 1 lock held by syz-executor.4/28504: #0: ffffffff8d6730a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d6730a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3f9/0xad0 net/core/rtnetlink.c:5559 2 locks held by syz-executor.5/28477: #0: ffffffff8c03c188 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11251 [inline] #0: ffffffff8c03c188 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x3047/0x3960 kernel/events/core.c:11474 #1: ffffffff8bf7d0e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline] #1: ffffffff8bf7d0e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x4fa/0x620 kernel/rcu/tree_exp.h:836 1 lock held by syz-executor.5/28481: #0: ffffffff8d6730a8 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x19f/0xb70 net/core/dev_ioctl.c:504 1 lock held by syz-executor.5/28488: #0: ffffffff8d6730a8 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x19f/0xb70 net/core/dev_ioctl.c:504 1 lock held by syz-executor.5/28494: #0: ffffffff8c03c188 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11251 [inline] #0: ffffffff8c03c188 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x3047/0x3960 kernel/events/core.c:11474 1 lock held by syz-executor.5/28509: #0: ffffffff8d6730a8 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x19f/0xb70 net/core/dev_ioctl.c:504 1 lock held by syz-executor.5/28512: #0: ffffffff8d6730a8 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x19f/0xb70 net/core/dev_ioctl.c:504 1 lock held by syz-executor.3/28479: #0: ffffffff8c03c188 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11251 [inline] #0: ffffffff8c03c188 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x3047/0x3960 kernel/events/core.c:11474 1 lock held by syz-executor.3/28505: #0: ffffffff8c03c188 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11251 [inline] #0: ffffffff8c03c188 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x3047/0x3960 kernel/events/core.c:11474 1 lock held by syz-executor.2/28478: #0: ffffffff8c03c188 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11251 [inline] #0: ffffffff8c03c188 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x3047/0x3960 kernel/events/core.c:11474 1 lock held by syz-executor.2/28484: #0: ffffffff8d6730a8 (rtnl_mutex){+.+.}-{3:3}, at: __tun_chr_ioctl.isra.0+0x5d9/0x4280 drivers/net/tun.c:3012 1 lock held by syz-executor.2/28506: #0: ffffffff8c03c188 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11251 [inline] #0: ffffffff8c03c188 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x3047/0x3960 kernel/events/core.c:11474 1 lock held by syz-executor.0/28480: #0: ffffffff8d6730a8 (rtnl_mutex){+.+.}-{3:3}, at: __tun_chr_ioctl.isra.0+0x5d9/0x4280 drivers/net/tun.c:3012 1 lock held by syz-executor.0/28483: #0: ffffffff8d6730a8 (rtnl_mutex){+.+.}-{3:3}, at: __tun_chr_ioctl.isra.0+0x19e/0x4280 drivers/net/tun.c:3012 1 lock held by syz-executor.0/28489: #0: ffffffff8d6730a8 (rtnl_mutex){+.+.}-{3:3}, at: __tun_chr_ioctl.isra.0+0x5d9/0x4280 drivers/net/tun.c:3012 1 lock held by syz-executor.0/28495: #0: ffffffff8d6730a8 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x458/0xb70 net/core/dev_ioctl.c:439 1 lock held by syz-executor.0/28498: #0: ffffffff8d6730a8 (rtnl_mutex){+.+.}-{3:3}, at: __tun_chr_ioctl.isra.0+0x19e/0x4280 drivers/net/tun.c:3012 1 lock held by syz-executor.0/28507: #0: ffffffff8d6730a8 (rtnl_mutex){+.+.}-{3:3}, at: __tun_chr_ioctl.isra.0+0x5d9/0x4280 drivers/net/tun.c:3012 1 lock held by syz-executor.0/28515: #0: ffffffff8d6730a8 (rtnl_mutex){+.+.}-{3:3}, at: __tun_chr_ioctl.isra.0+0x5d9/0x4280 drivers/net/tun.c:3012 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1628 Comm: khungtaskd Not tainted 5.12.0-rc7-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:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 24066 Comm: kworker/1:2 Not tainted 5.12.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events prog_array_map_clear_deferred RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:85 [inline] RIP: 0010:memory_is_nonzero mm/kasan/generic.c:102 [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:177 [inline] RIP: 0010:kasan_check_range+0xdb/0x180 mm/kasan/generic.c:186 Code: 80 38 00 74 f2 48 89 c2 b8 01 00 00 00 48 85 d2 75 56 5b 5d 41 5c c3 48 85 d2 74 5e 48 01 ea eb 09 48 83 c0 01 48 39 d0 74 50 <80> 38 00 74 f2 eb d4 41 bc 08 00 00 00 48 89 ea 45 29 dc 4d 8d 1c RSP: 0018:ffffc90001bdfaa0 EFLAGS: 00000286 RAX: ffffed1004851dc4 RBX: ffffed1004851dc5 RCX: ffffffff890b4bb6 RDX: ffffed1004851dc5 RSI: 0000000000000008 RDI: ffff88802428ee20 RBP: ffffed1004851dc4 R08: 0000000000000000 R09: ffff88802428ee27 R10: ffffed1004851dc4 R11: 0000000000000000 R12: 0000000000000000 R13: dffffc0000000000 R14: 000000000acce7a8 R15: 0000000010000009 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa7b3059000 CR3: 00000000119ce000 CR4: 00000000001506e0 DR0: 0000000020000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: instrument_atomic_read include/linux/instrumented.h:71 [inline] atomic64_read include/asm-generic/atomic-instrumented.h:837 [inline] atomic_long_read include/asm-generic/atomic-long.h:29 [inline] __mutex_trylock_or_owner kernel/locking/mutex.c:101 [inline] __mutex_trylock kernel/locking/mutex.c:142 [inline] __mutex_lock_common kernel/locking/mutex.c:951 [inline] __mutex_lock+0x146/0x1120 kernel/locking/mutex.c:1096 fd_array_map_delete_elem+0x120/0x2e0 kernel/bpf/arraymap.c:799 bpf_fd_array_map_clear kernel/bpf/arraymap.c:849 [inline] prog_array_map_clear_deferred+0x10b/0x1b0 kernel/bpf/arraymap.c:1028 process_one_work+0x98d/0x1600 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:294