INFO: task khugepaged:34 blocked for more than 143 seconds. Not tainted 5.19.0-rc8-syzkaller-00025-g6e7765cb477a #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:khugepaged state:D stack:28016 pid: 34 ppid: 2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0xa00/0x4b50 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1911 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x378/0x530 kernel/sched/completion.c:106 __flush_work+0x56c/0xb10 kernel/workqueue.c:3075 __lru_add_drain_all+0x421/0x770 mm/swap.c:841 khugepaged_do_scan mm/khugepaged.c:2235 [inline] khugepaged+0x120/0x66b0 mm/khugepaged.c:2296 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 INFO: task syz-executor.1:16503 blocked for more than 144 seconds. Not tainted 5.19.0-rc8-syzkaller-00025-g6e7765cb477a #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:27856 pid:16503 ppid: 3656 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0xa00/0x4b50 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6589 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa70/0x1350 kernel/locking/mutex.c:747 exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline] synchronize_rcu_expedited+0x2d3/0x610 kernel/rcu/tree_exp.h:927 synchronize_net+0x3a/0x50 net/core/dev.c:10745 packet_release+0xa6a/0xd00 net/packet/af_packet.c:3158 __sock_release+0xcd/0x280 net/socket.c:650 sock_close+0x18/0x20 net/socket.c:1365 __fput+0x277/0x9d0 fs/file_table.c:317 task_work_run+0xdd/0x1a0 kernel/task_work.c:177 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0xade/0x29d0 kernel/exit.c:795 do_group_exit+0xd2/0x2f0 kernel/exit.c:925 get_signal+0x2542/0x2600 kernel/signal.c:2857 arch_do_signal_or_restart+0x82/0x2300 arch/x86/kernel/signal.c:869 exit_to_user_mode_loop kernel/entry/common.c:166 [inline] exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:294 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f46b5489252 RSP: 002b:00007f46b664c0d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 RAX: 0000000020ffd000 RBX: 0000000000008011 RCX: 00007f46b5489252 RDX: 0000000000000003 RSI: 0000000000100000 RDI: 0000000020ffd000 RBP: 0000000020ffd000 R08: 0000000000000028 R09: 0000000010000000 R10: 0000000000008011 R11: 0000000000000206 R12: 0000000020000080 R13: 0000000020ffd000 R14: 0000000020000300 R15: 0000000020002000 INFO: task syz-executor.3:16526 blocked for more than 145 seconds. Not tainted 5.19.0-rc8-syzkaller-00025-g6e7765cb477a #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:27080 pid:16526 ppid: 3659 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0xa00/0x4b50 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 synchronize_rcu_expedited+0x46f/0x610 kernel/rcu/tree_exp.h:942 synchronize_rcu+0x130/0x190 kernel/rcu/tree.c:3843 bcm_release+0x564/0xa10 net/can/bcm.c:1549 __sock_release+0xcd/0x280 net/socket.c:650 sock_close+0x18/0x20 net/socket.c:1365 __fput+0x277/0x9d0 fs/file_table.c:317 task_work_run+0xdd/0x1a0 kernel/task_work.c:177 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0xade/0x29d0 kernel/exit.c:795 do_group_exit+0xd2/0x2f0 kernel/exit.c:925 get_signal+0x2542/0x2600 kernel/signal.c:2857 arch_do_signal_or_restart+0x82/0x2300 arch/x86/kernel/signal.c:869 exit_to_user_mode_loop kernel/entry/common.c:166 [inline] exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:294 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f2bb5889209 RSP: 002b:00007f2bb6a93168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: 0000000000000044 RBX: 00007f2bb599bf60 RCX: 00007f2bb5889209 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000003 RBP: 00007f2bb58e3161 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f2bb5ecfb1f R14: 00007f2bb6a93300 R15: 0000000000022000 INFO: task syz-executor.0:16535 blocked for more than 146 seconds. Not tainted 5.19.0-rc8-syzkaller-00025-g6e7765cb477a #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:25528 pid:16535 ppid: 3641 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0xa00/0x4b50 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 exp_funnel_lock kernel/rcu/tree_exp.h:313 [inline] synchronize_rcu_expedited+0x5a6/0x610 kernel/rcu/tree_exp.h:927 synchronize_net+0x3a/0x50 net/core/dev.c:10745 packet_release+0xa6a/0xd00 net/packet/af_packet.c:3158 __sock_release+0xcd/0x280 net/socket.c:650 sock_close+0x18/0x20 net/socket.c:1365 __fput+0x277/0x9d0 fs/file_table.c:317 task_work_run+0xdd/0x1a0 kernel/task_work.c:177 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0xade/0x29d0 kernel/exit.c:795 do_group_exit+0xd2/0x2f0 kernel/exit.c:925 get_signal+0x2542/0x2600 kernel/signal.c:2857 arch_do_signal_or_restart+0x82/0x2300 arch/x86/kernel/signal.c:869 exit_to_user_mode_loop kernel/entry/common.c:166 [inline] exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:294 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f6ac1089209 RSP: 002b:00007f6ac21ea168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: 0000000000000064 RBX: 00007f6ac119bf60 RCX: 00007f6ac1089209 RDX: 0000000000004000 RSI: 0000000020000040 RDI: 0000000000000004 RBP: 00007f6ac10e3161 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f6ac16cfb1f R14: 00007f6ac21ea300 R15: 0000000000022000 INFO: task syz-executor.2:16531 blocked for more than 148 seconds. Not tainted 5.19.0-rc8-syzkaller-00025-g6e7765cb477a #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:28032 pid:16531 ppid: 3655 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0xa00/0x4b50 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 exp_funnel_lock kernel/rcu/tree_exp.h:313 [inline] synchronize_rcu_expedited+0x5a6/0x610 kernel/rcu/tree_exp.h:927 synchronize_rcu+0x130/0x190 kernel/rcu/tree.c:3843 synchronize_net+0x4a/0x50 net/core/dev.c:10747 packet_release+0xa6a/0xd00 net/packet/af_packet.c:3158 __sock_release+0xcd/0x280 net/socket.c:650 sock_close+0x18/0x20 net/socket.c:1365 __fput+0x277/0x9d0 fs/file_table.c:317 task_work_run+0xdd/0x1a0 kernel/task_work.c:177 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop kernel/entry/common.c:169 [inline] exit_to_user_mode_prepare+0x23c/0x250 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:294 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fc467c3be4b RSP: 002b:00007fc4682cfb80 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007fc467c3be4b RDX: 0000000000000000 RSI: 0000001b2ef22458 RDI: 0000000000000003 RBP: 00007fc467d9d960 R08: 0000000000000000 R09: 00000000715d6f27 R10: 0000000000000000 R11: 0000000000000293 R12: 00000000001cc494 R13: 00007fc4682cfc80 R14: 00007fc4682cfca0 R15: 0000000000000032 INFO: task dhcpcd:16545 blocked for more than 149 seconds. Not tainted 5.19.0-rc8-syzkaller-00025-g6e7765cb477a #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:dhcpcd state:D stack:29048 pid:16545 ppid: 3188 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0xa00/0x4b50 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 exp_funnel_lock kernel/rcu/tree_exp.h:313 [inline] synchronize_rcu_expedited+0x5a6/0x610 kernel/rcu/tree_exp.h:927 synchronize_rcu+0x130/0x190 kernel/rcu/tree.c:3843 synchronize_net+0x4a/0x50 net/core/dev.c:10747 __unregister_prot_hook+0x48a/0x5a0 net/packet/af_packet.c:382 packet_do_bind+0x8bc/0xdc0 net/packet/af_packet.c:3227 packet_bind+0x152/0x1b0 net/packet/af_packet.c:3311 __sys_bind+0x1e9/0x250 net/socket.c:1776 __do_sys_bind net/socket.c:1787 [inline] __se_sys_bind net/socket.c:1785 [inline] __x64_sys_bind+0x6f/0xb0 net/socket.c:1785 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f4d6b82ece7 RSP: 002b:00007ffc5813bee8 EFLAGS: 00000217 ORIG_RAX: 0000000000000031 RAX: ffffffffffffffda RBX: 000055c78a117b60 RCX: 00007f4d6b82ece7 RDX: 0000000000000014 RSI: 00007ffc5813bef8 RDI: 0000000000000005 RBP: 0000000000000000 R08: 000055c78af386d0 R09: 00007f4d6b8efa60 R10: 0000000000000800 R11: 0000000000000217 R12: 000055c78af37d20 R13: 000055c78af399a8 R14: 00007ffc5815c7cc R15: 00007ffc5815c7f4 Showing all locks held in the system: 1 lock held by khungtaskd/28: #0: ffffffff8bd871e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6491 1 lock held by khugepaged/34: #0: ffffffff8be797a8 (lock#5){+.+.}-{3:3}, at: __lru_add_drain_all+0x62/0x770 mm/swap.c:790 3 locks held by kworker/u4:4/56: 2 locks held by getty/3288: #0: ffff88814a7fe098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244 #1: ffffc90002d162e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xe50/0x13c0 drivers/tty/n_tty.c:2124 2 locks held by kworker/u4:12/6686: #0: ffff888011869138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888011869138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888011869138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888011869138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888011869138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888011869138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc90005077da8 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 3 locks held by kworker/0:9/11832: 2 locks held by syz-executor.1/16503: #0: ffff888075fc5c10 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:741 [inline] #0: ffff888075fc5c10 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release+0x86/0x280 net/socket.c:649 #1: ffffffff8bd91860 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline] #1: ffffffff8bd91860 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x2d3/0x610 kernel/rcu/tree_exp.h:927 3 locks held by syz-executor.3/16526: #0: ffff8880270e9410 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:741 [inline] #0: ffff8880270e9410 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release+0x86/0x280 net/socket.c:649 #1: ffff88803dbb5130 (sk_lock-AF_CAN){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1677 [inline] #1: ffff88803dbb5130 (sk_lock-AF_CAN){+.+.}-{0:0}, at: bcm_release+0x1ff/0xa10 net/can/bcm.c:1517 #2: ffffffff8bd91860 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline] #2: ffffffff8bd91860 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x2d3/0x610 kernel/rcu/tree_exp.h:927 1 lock held by syz-executor.0/16535: #0: ffff888027043210 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:741 [inline] #0: ffff888027043210 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release+0x86/0x280 net/socket.c:649 1 lock held by syz-executor.2/16531: #0: ffff888027045610 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:741 [inline] #0: ffff888027045610 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release+0x86/0x280 net/socket.c:649 1 lock held by dhcpcd/16545: #0: ffff888075824130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1677 [inline] #0: ffff888075824130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2f/0xdc0 net/packet/af_packet.c:3194 1 lock held by dhcpcd/16546: #0: ffff88803f18e130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1677 [inline] #0: ffff88803f18e130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2f/0xdc0 net/packet/af_packet.c:3194 1 lock held by dhcpcd/16547: #0: ffff88814dac8130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1677 [inline] #0: ffff88814dac8130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2f/0xdc0 net/packet/af_packet.c:3194 1 lock held by dhcpcd/16548: #0: ffff88809c488130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1677 [inline] #0: ffff88809c488130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2f/0xdc0 net/packet/af_packet.c:3194 1 lock held by dhcpcd/16549: #0: ffff888017970130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1677 [inline] #0: ffff888017970130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2f/0xdc0 net/packet/af_packet.c:3194 1 lock held by dhcpcd/16550: #0: ffff88809c48a130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1677 [inline] #0: ffff88809c48a130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2f/0xdc0 net/packet/af_packet.c:3194 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 28 Comm: khungtaskd Not tainted 5.19.0-rc8-syzkaller-00025-g6e7765cb477a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline] watchdog+0xc1d/0xf50 kernel/hung_task.c:369 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 11832 Comm: kworker/0:9 Not tainted 5.19.0-rc8-syzkaller-00025-g6e7765cb477a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 Workqueue: events ipvlan_process_multicast RIP: 0010:__sanitizer_cov_trace_pc+0x37/0x60 kernel/kcov.c:200 Code: 81 e1 00 01 00 00 65 48 8b 14 25 80 6f 02 00 a9 00 01 ff 00 74 0e 85 c9 74 35 8b 82 a4 15 00 00 85 c0 74 2b 8b 82 80 15 00 00 <83> f8 02 75 20 48 8b 8a 88 15 00 00 8b 92 84 15 00 00 48 8b 01 48 RSP: 0018:ffffc900066a7878 EFLAGS: 00000046 RAX: 0000000000000000 RBX: 00000000000000de RCX: 0000000000000000 RDX: ffff888022b60000 RSI: ffffffff83fb9333 RDI: 0000000000000006 RBP: ffff88803bb28c98 R08: 0000000000000006 R09: 00000000000000de R10: 00000000000000de R11: 0000000000000001 R12: 00000000000000de R13: 0000000000000000 R14: 0000000000000000 R15: ffffc900066a7938 FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6b13e9c380 CR3: 000000000ba8e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: _find_next_bit+0x1e3/0x260 lib/find_bit.c:69 find_next_bit include/linux/find.h:44 [inline] pcpu_is_populated mm/percpu.c:1081 [inline] pcpu_find_block_fit+0x3ea/0x4e0 mm/percpu.c:1123 pcpu_alloc+0x59a/0x13d0 mm/percpu.c:1805 netdev_core_stats_alloc+0x20/0xa0 net/core/dev.c:10403 dev_core_stats include/linux/netdevice.h:3897 [inline] dev_core_stats_rx_dropped_inc include/linux/netdevice.h:3909 [inline] enqueue_to_backlog+0x3b5/0xbf0 net/core/dev.c:4696 netif_rx_internal+0x10a/0x5f0 net/core/dev.c:4953 dev_forward_skb+0x48/0x60 net/core/dev.c:2173 ipvlan_process_multicast+0x74b/0xd90 drivers/net/ipvlan/ipvlan_core.c:274 process_one_work+0x996/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306