INFO: task syz-executor.0:8514 blocked for more than 143 seconds. Not tainted 5.11.0-rc4-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:22952 pid: 8514 ppid: 1 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4313 [inline] __schedule+0x90c/0x21a0 kernel/sched/core.c:5064 schedule+0xcf/0x270 kernel/sched/core.c:5143 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5202 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x81a/0x1110 kernel/locking/mutex.c:1103 xt_find_table_lock+0x41/0x540 net/netfilter/x_tables.c:1206 xt_request_find_table_lock+0x27/0xf0 net/netfilter/x_tables.c:1253 get_info+0x16a/0x710 net/ipv6/netfilter/ip6_tables.c:980 do_ip6t_get_ctl+0x152/0xa00 net/ipv6/netfilter/ip6_tables.c:1660 nf_getsockopt+0x72/0xd0 net/netfilter/nf_sockopt.c:116 ipv6_getsockopt+0x1be/0x270 net/ipv6/ipv6_sockglue.c:1486 tcp_getsockopt+0x86/0xd0 net/ipv4/tcp.c:4156 __sys_getsockopt+0x21f/0x5f0 net/socket.c:2159 __do_sys_getsockopt net/socket.c:2174 [inline] __se_sys_getsockopt net/socket.c:2171 [inline] __x64_sys_getsockopt+0xba/0x150 net/socket.c:2171 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x460d2a RSP: 002b:00007ffc38d569b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 00007ffc38d569e0 RCX: 0000000000460d2a RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000003 RBP: 000000000074cca0 R08: 00007ffc38d569dc R09: 0000000000004000 R10: 00007ffc38d569e0 R11: 0000000000000246 R12: 00007ffc38d56a40 R13: 0000000000000003 R14: 000000000074aae0 R15: 0000000000000029 INFO: task syz-executor.1:8516 blocked for more than 144 seconds. Not tainted 5.11.0-rc4-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:22952 pid: 8516 ppid: 1 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4313 [inline] __schedule+0x90c/0x21a0 kernel/sched/core.c:5064 schedule+0xcf/0x270 kernel/sched/core.c:5143 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5202 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x81a/0x1110 kernel/locking/mutex.c:1103 xt_find_table_lock+0x41/0x540 net/netfilter/x_tables.c:1206 xt_request_find_table_lock+0x27/0xf0 net/netfilter/x_tables.c:1253 get_info+0x16a/0x710 net/ipv6/netfilter/ip6_tables.c:980 do_ip6t_get_ctl+0x152/0xa00 net/ipv6/netfilter/ip6_tables.c:1660 nf_getsockopt+0x72/0xd0 net/netfilter/nf_sockopt.c:116 ipv6_getsockopt+0x1be/0x270 net/ipv6/ipv6_sockglue.c:1486 tcp_getsockopt+0x86/0xd0 net/ipv4/tcp.c:4156 __sys_getsockopt+0x21f/0x5f0 net/socket.c:2159 __do_sys_getsockopt net/socket.c:2174 [inline] __se_sys_getsockopt net/socket.c:2171 [inline] __x64_sys_getsockopt+0xba/0x150 net/socket.c:2171 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x460d2a RSP: 002b:00007fffcbe224f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 00007fffcbe22520 RCX: 0000000000460d2a RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000003 RBP: 000000000074cca0 R08: 00007fffcbe2251c R09: 0000000000004000 R10: 00007fffcbe22520 R11: 0000000000000246 R12: 00007fffcbe22580 R13: 0000000000000003 R14: 000000000074aae0 R15: 0000000000000029 INFO: task syz-executor.4:8522 blocked for more than 144 seconds. Not tainted 5.11.0-rc4-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:22952 pid: 8522 ppid: 1 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4313 [inline] __schedule+0x90c/0x21a0 kernel/sched/core.c:5064 schedule+0xcf/0x270 kernel/sched/core.c:5143 synchronize_rcu_expedited+0x44b/0x610 kernel/rcu/tree_exp.h:852 synchronize_rcu+0xdf/0x180 kernel/rcu/tree.c:3690 xt_replace_table+0x304/0x600 net/netfilter/x_tables.c:1389 __do_replace+0x1d7/0x8c0 net/ipv6/netfilter/ip6_tables.c:1083 do_replace net/ipv6/netfilter/ip6_tables.c:1156 [inline] do_ip6t_set_ctl+0x8ec/0xb70 net/ipv6/netfilter/ip6_tables.c:1636 nf_setsockopt+0x83/0xe0 net/netfilter/nf_sockopt.c:101 ipv6_setsockopt+0x122/0x180 net/ipv6/ipv6_sockglue.c:1008 tcp_setsockopt+0x136/0x2440 net/ipv4/tcp.c:3598 __sys_setsockopt+0x2db/0x610 net/socket.c:2115 __do_sys_setsockopt net/socket.c:2126 [inline] __se_sys_setsockopt net/socket.c:2123 [inline] __x64_sys_setsockopt+0xba/0x150 net/socket.c:2123 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x460d4a RSP: 002b:00007fff5c463f68 EFLAGS: 00000202 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007fff5c463f90 RCX: 0000000000460d4a RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000003 RBP: 000000000074cca0 R08: 00000000000003b8 R09: 0000000000004000 R10: 000000000074ab40 R11: 0000000000000202 R12: 00007fff5c463ff0 R13: 0000000000000003 R14: 000000000074aae0 R15: 0000000000000029 INFO: task syz-executor.5:8660 blocked for more than 145 seconds. Not tainted 5.11.0-rc4-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:23944 pid: 8660 ppid: 1 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4313 [inline] __schedule+0x90c/0x21a0 kernel/sched/core.c:5064 schedule+0xcf/0x270 kernel/sched/core.c:5143 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5202 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x81a/0x1110 kernel/locking/mutex.c:1103 xt_find_table_lock+0x41/0x540 net/netfilter/x_tables.c:1206 xt_request_find_table_lock+0x27/0xf0 net/netfilter/x_tables.c:1253 get_info+0x16a/0x710 net/ipv6/netfilter/ip6_tables.c:980 do_ip6t_get_ctl+0x152/0xa00 net/ipv6/netfilter/ip6_tables.c:1660 nf_getsockopt+0x72/0xd0 net/netfilter/nf_sockopt.c:116 ipv6_getsockopt+0x1be/0x270 net/ipv6/ipv6_sockglue.c:1486 tcp_getsockopt+0x86/0xd0 net/ipv4/tcp.c:4156 __sys_getsockopt+0x21f/0x5f0 net/socket.c:2159 __do_sys_getsockopt net/socket.c:2174 [inline] __se_sys_getsockopt net/socket.c:2171 [inline] __x64_sys_getsockopt+0xba/0x150 net/socket.c:2171 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x460d2a RSP: 002b:00007ffee583dae8 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 00007ffee583db10 RCX: 0000000000460d2a RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000003 RBP: 000000000074cca0 R08: 00007ffee583db0c R09: 0000000000004000 R10: 00007ffee583db10 R11: 0000000000000246 R12: 00007ffee583db70 R13: 0000000000000003 R14: 000000000074aae0 R15: 0000000000000029 INFO: task kworker/u4:7:13246 blocked for more than 146 seconds. Not tainted 5.11.0-rc4-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:7 state:D stack:24872 pid:13246 ppid: 2 flags:0x00004000 Workqueue: events_unbound fsnotify_mark_destroy_workfn Call Trace: context_switch kernel/sched/core.c:4313 [inline] __schedule+0x90c/0x21a0 kernel/sched/core.c:5064 schedule+0xcf/0x270 kernel/sched/core.c:5143 schedule_timeout+0x1d8/0x250 kernel/time/timer.c:1854 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+0x163/0x260 kernel/sched/completion.c:138 __synchronize_srcu+0x132/0x220 kernel/rcu/srcutree.c:924 fsnotify_mark_destroy_workfn+0xfd/0x340 fs/notify/mark.c:836 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 INFO: task kworker/u4:5:24763 blocked for more than 146 seconds. Not tainted 5.11.0-rc4-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:5 state:D stack:24800 pid:24763 ppid: 2 flags:0x00004000 Workqueue: events_unbound fsnotify_connector_destroy_workfn Call Trace: context_switch kernel/sched/core.c:4313 [inline] __schedule+0x90c/0x21a0 kernel/sched/core.c:5064 schedule+0xcf/0x270 kernel/sched/core.c:5143 schedule_timeout+0x1d8/0x250 kernel/time/timer.c:1854 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+0x163/0x260 kernel/sched/completion.c:138 __synchronize_srcu+0x132/0x220 kernel/rcu/srcutree.c:924 fsnotify_connector_destroy_workfn+0x49/0xa0 fs/notify/mark.c:164 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 INFO: task syz-executor.2:2015 blocked for more than 147 seconds. Not tainted 5.11.0-rc4-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:27952 pid: 2015 ppid: 8518 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4313 [inline] __schedule+0x90c/0x21a0 kernel/sched/core.c:5064 schedule+0xcf/0x270 kernel/sched/core.c:5143 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5202 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x81a/0x1110 kernel/locking/mutex.c:1103 exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline] synchronize_rcu_expedited+0x27e/0x610 kernel/rcu/tree_exp.h:836 synchronize_rcu+0xdf/0x180 kernel/rcu/tree.c:3690 rcu_sync_enter+0x147/0x2d0 kernel/rcu/sync.c:149 percpu_down_write+0x98/0x440 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:451 __ext4_ioctl+0x39f4/0x4f60 fs/ext4/ioctl.c:859 ext4_ioctl+0x46/0x90 fs/ext4/ioctl.c:1322 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+0x44/0xa9 RIP: 0033:0x45e219 RSP: 002b:00007fbe5454fc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045e219 RDX: 0000000000400007 RSI: 0000000040086602 RDI: 0000000000000003 RBP: 000000000119bfc0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c R13: 00007ffdd955837f R14: 00007fbe545509c0 R15: 000000000119bf8c INFO: task syz-executor.2:2022 blocked for more than 148 seconds. Not tainted 5.11.0-rc4-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:28528 pid: 2022 ppid: 8518 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4313 [inline] __schedule+0x90c/0x21a0 kernel/sched/core.c:5064 schedule+0xcf/0x270 kernel/sched/core.c:5143 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] process_measurement+0x6b7/0x1790 security/integrity/ima/ima_main.c:234 ima_file_check+0xb9/0x100 security/integrity/ima/ima_main.c:498 do_open fs/namei.c:3256 [inline] path_openat+0x154d/0x2730 fs/namei.c:3371 do_filp_open+0x17e/0x3c0 fs/namei.c:3398 do_sys_openat2+0x16d/0x420 fs/open.c:1172 do_sys_open fs/open.c:1188 [inline] __do_sys_openat fs/open.c:1204 [inline] __se_sys_openat fs/open.c:1199 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1199 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45e219 RSP: 002b:00007fbe5452ec68 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045e219 RDX: 0000000000007a05 RSI: 00000000200001c0 RDI: ffffffffffffff9c RBP: 000000000119c070 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000001700 R11: 0000000000000246 R12: 000000000119c034 R13: 00007ffdd955837f R14: 00007fbe5452f9c0 R15: 000000000119c034 INFO: task syz-executor.2:2027 blocked for more than 148 seconds. Not tainted 5.11.0-rc4-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:28528 pid: 2027 ppid: 8518 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4313 [inline] __schedule+0x90c/0x21a0 kernel/sched/core.c:5064 schedule+0xcf/0x270 kernel/sched/core.c:5143 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] process_measurement+0x6b7/0x1790 security/integrity/ima/ima_main.c:234 ima_file_check+0xb9/0x100 security/integrity/ima/ima_main.c:498 do_open fs/namei.c:3256 [inline] path_openat+0x154d/0x2730 fs/namei.c:3371 do_filp_open+0x17e/0x3c0 fs/namei.c:3398 do_sys_openat2+0x16d/0x420 fs/open.c:1172 do_sys_open fs/open.c:1188 [inline] __do_sys_openat fs/open.c:1204 [inline] __se_sys_openat fs/open.c:1199 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1199 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45e219 RSP: 002b:00007fbe5450dc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045e219 RDX: 0000000000007a05 RSI: 0000000020000140 RDI: ffffffffffffff9c RBP: 000000000119c118 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000001700 R11: 0000000000000246 R12: 000000000119c0dc R13: 00007ffdd955837f R14: 00007fbe5450e9c0 R15: 000000000119c0dc INFO: task syz-executor.2:2029 blocked for more than 149 seconds. Not tainted 5.11.0-rc4-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:28528 pid: 2029 ppid: 8518 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4313 [inline] __schedule+0x90c/0x21a0 kernel/sched/core.c:5064 schedule+0xcf/0x270 kernel/sched/core.c:5143 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] process_measurement+0x6b7/0x1790 security/integrity/ima/ima_main.c:234 ima_file_check+0xb9/0x100 security/integrity/ima/ima_main.c:498 do_open fs/namei.c:3256 [inline] path_openat+0x154d/0x2730 fs/namei.c:3371 do_filp_open+0x17e/0x3c0 fs/namei.c:3398 do_sys_openat2+0x16d/0x420 fs/open.c:1172 do_sys_open fs/open.c:1188 [inline] __do_sys_openat fs/open.c:1204 [inline] __se_sys_openat fs/open.c:1199 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1199 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45e219 RSP: 002b:00007fbe544ecc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045e219 RDX: 0000000000007a05 RSI: 0000000020000340 RDI: ffffffffffffff9c RBP: 000000000119c1c0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000001700 R11: 0000000000000246 R12: 000000000119c184 R13: 00007ffdd955837f R14: 00007fbe544ed9c0 R15: 000000000119c184 Showing all locks held in the system: 2 locks held by kworker/1:0/19: 1 lock held by khungtaskd/1651: #0: ffffffff8b373960 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6254 1 lock held by khugepaged/1663: #0: ffffffff8b44b948 (lock#5){+.+.}-{3:3}, at: lru_add_drain_all+0x5f/0x6f0 mm/swap.c:787 3 locks held by kworker/u4:4/3101: 1 lock held by in:imklog/8194: #0: ffff888013ea8af0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:947 1 lock held by syz-executor.0/8514: #0: ffff88802011cd88 (&xt[i].mutex){+.+.}-{3:3}, at: xt_find_table_lock+0x41/0x540 net/netfilter/x_tables.c:1206 1 lock held by syz-executor.1/8516: #0: ffff88802011cd88 (&xt[i].mutex){+.+.}-{3:3}, at: xt_find_table_lock+0x41/0x540 net/netfilter/x_tables.c:1206 2 locks held by syz-executor.4/8522: #0: ffff88802011cd88 (&xt[i].mutex){+.+.}-{3:3}, at: xt_find_table_lock+0x41/0x540 net/netfilter/x_tables.c:1206 #1: ffffffff8b37c228 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline] #1: ffffffff8b37c228 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x4f2/0x610 kernel/rcu/tree_exp.h:836 1 lock held by syz-executor.5/8660: #0: ffff88802011cd88 (&xt[i].mutex){+.+.}-{3:3}, at: xt_find_table_lock+0x41/0x540 net/netfilter/x_tables.c:1206 2 locks held by kworker/0:4/9814: 2 locks held by kworker/u4:7/13246: #0: ffff888010069138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010069138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline] #0: ffff888010069138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888010069138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline] #0: ffff888010069138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline] #0: ffff888010069138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x871/0x15f0 kernel/workqueue.c:2246 #1: ffffc90001cb7da8 ((reaper_work).work){+.+.}-{0:0}, at: process_one_work+0x8a5/0x15f0 kernel/workqueue.c:2250 2 locks held by kworker/u4:5/24763: #0: ffff888010069138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010069138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline] #0: ffff888010069138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888010069138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline] #0: ffff888010069138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline] #0: ffff888010069138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x871/0x15f0 kernel/workqueue.c:2246 #1: ffffc90002457da8 (connector_reaper_work){+.+.}-{0:0}, at: process_one_work+0x8a5/0x15f0 kernel/workqueue.c:2250 4 locks held by syz-executor.2/2015: #0: ffff888021d30460 (sb_writers#4){.+.+}-{0:0}, at: __ext4_ioctl+0x2bda/0x4f60 fs/ext4/ioctl.c:850 #1: ffff88802eacca88 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: inode_lock include/linux/fs.h:773 [inline] #1: ffff88802eacca88 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: __ext4_ioctl+0x2c08/0x4f60 fs/ext4/ioctl.c:854 #2: ffff888021d32a40 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_ind_migrate+0x237/0x840 fs/ext4/migrate.c:623 #3: ffffffff8b37c228 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline] #3: ffffffff8b37c228 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x27e/0x610 kernel/rcu/tree_exp.h:836 2 locks held by syz-executor.2/2022: #0: ffff888021d30460 (sb_writers#4){.+.+}-{0:0}, at: do_open fs/namei.c:3247 [inline] #0: ffff888021d30460 (sb_writers#4){.+.+}-{0:0}, at: path_openat+0x1a3d/0x2730 fs/namei.c:3371 #1: ffff88802eacca88 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: inode_lock include/linux/fs.h:773 [inline] #1: ffff88802eacca88 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: process_measurement+0x6b7/0x1790 security/integrity/ima/ima_main.c:234 2 locks held by syz-executor.2/2027: #0: ffff888021d30460 (sb_writers#4){.+.+}-{0:0}, at: do_open fs/namei.c:3247 [inline] #0: ffff888021d30460 (sb_writers#4){.+.+}-{0:0}, at: path_openat+0x1a3d/0x2730 fs/namei.c:3371 #1: ffff88802eacca88 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: inode_lock include/linux/fs.h:773 [inline] #1: ffff88802eacca88 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: process_measurement+0x6b7/0x1790 security/integrity/ima/ima_main.c:234 2 locks held by syz-executor.2/2029: #0: ffff888021d30460 (sb_writers#4){.+.+}-{0:0}, at: do_open fs/namei.c:3247 [inline] #0: ffff888021d30460 (sb_writers#4){.+.+}-{0:0}, at: path_openat+0x1a3d/0x2730 fs/namei.c:3371 #1: ffff88802eacca88 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: inode_lock include/linux/fs.h:773 [inline] #1: ffff88802eacca88 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: process_measurement+0x6b7/0x1790 security/integrity/ima/ima_main.c:234 2 locks held by syz-executor.2/2037: #0: ffff888021d30460 (sb_writers#4){.+.+}-{0:0}, at: do_open fs/namei.c:3247 [inline] #0: ffff888021d30460 (sb_writers#4){.+.+}-{0:0}, at: path_openat+0x1a3d/0x2730 fs/namei.c:3371 #1: ffff88802eacca88 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: inode_lock include/linux/fs.h:773 [inline] #1: ffff88802eacca88 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: process_measurement+0x6b7/0x1790 security/integrity/ima/ima_main.c:234 2 locks held by syz-executor.2/2040: #0: ffff888021d30460 (sb_writers#4){.+.+}-{0:0}, at: do_open fs/namei.c:3247 [inline] #0: ffff888021d30460 (sb_writers#4){.+.+}-{0:0}, at: path_openat+0x1a3d/0x2730 fs/namei.c:3371 #1: ffff88802eacca88 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: inode_lock include/linux/fs.h:773 [inline] #1: ffff88802eacca88 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: process_measurement+0x6b7/0x1790 security/integrity/ima/ima_main.c:234 1 lock held by syz-executor.3/2021: #0: ffffffff8b4352c8 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11233 [inline] #0: ffffffff8b4352c8 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x3047/0x3960 kernel/events/core.c:11456 1 lock held by syz-executor.3/2026: #0: ffffffff8b4352c8 (perf_sched_mutex){+.+.}-{3:3}, at: account_event kernel/events/core.c:11233 [inline] #0: ffffffff8b4352c8 (perf_sched_mutex){+.+.}-{3:3}, at: perf_event_alloc.part.0+0x3047/0x3960 kernel/events/core.c:11456 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1651 Comm: khungtaskd Not tainted 5.11.0-rc4-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:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:209 [inline] watchdog+0xd43/0xfa0 kernel/hung_task.c:294 kthread+0x3b1/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 19 Comm: kworker/1:0 Not tainted 5.11.0-rc4-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:check_memory_region+0xe/0x180 mm/kasan/generic.c:184 Code: f5 00 00 00 e9 d3 36 27 02 0f 1f 00 48 89 f2 be f8 00 00 00 e9 c3 36 27 02 0f 1f 00 48 85 f6 0f 84 70 01 00 00 49 89 f9 41 54 <44> 0f b6 c2 49 01 f1 55 53 0f 82 18 01 00 00 48 b8 ff ff ff ff ff RSP: 0018:ffffc90000d97b70 EFLAGS: 00000202 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffffff88fc09fe RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8880114c6220 RBP: 0000000000000000 R08: 0000000000000000 R09: ffff8880114c6220 R10: 0000000000000001 R11: 0000000000000000 R12: 00000000051d9565 R13: ffffc90015fd2188 R14: 1ffff920001b2f74 R15: ffff8880114c6220 FS: 0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd6926de000 CR3: 00000000116c0000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 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_unlock_slowpath+0x8e/0x610 kernel/locking/mutex.c:1237 fd_array_map_delete_elem+0x1b0/0x2e0 kernel/bpf/arraymap.c:762 bpf_fd_array_map_clear kernel/bpf/arraymap.c:809 [inline] prog_array_map_clear_deferred+0x10b/0x1b0 kernel/bpf/arraymap.c:988 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