rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5339/1:b..l P7038/1:b..l P5605/1:b..l P9/1:b..l P5587/3:b..l rcu: (detected by 0, t=10502 jiffies, g=38601, q=899 ncpus=1) task:syz-executor state:R running task stack:21224 pid:5587 tgid:5587 ppid:5586 task_flags:0x400100 flags:0x00080000 Call Trace: context_switch kernel/sched/core.c:5526 [inline] __schedule+0x1259/0x6920 kernel/sched/core.c:7277 preempt_schedule_common+0x3c/0xb0 kernel/sched/core.c:7456 preempt_schedule_thunk+0x16/0x40 arch/x86/entry/thunk.S:12 __local_bh_enable_ip+0x106/0x120 kernel/softirq.c:480 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:923 [inline] __dev_queue_xmit+0xa27/0x4970 net/core/dev.c:4961 dev_queue_xmit include/linux/netdevice.h:3461 [inline] neigh_hh_output include/net/neighbour.h:544 [inline] neigh_output include/net/neighbour.h:558 [inline] ip_finish_output2+0xf4a/0x2400 net/ipv4/ip_output.c:236 __ip_finish_output.part.0+0x444/0x6f0 net/ipv4/ip_output.c:314 __ip_finish_output net/ipv4/ip_output.c:302 [inline] ip_finish_output net/ipv4/ip_output.c:324 [inline] NF_HOOK_COND include/linux/netfilter.h:314 [inline] ip_output+0x39b/0xc10 net/ipv4/ip_output.c:437 dst_output include/net/dst.h:470 [inline] ip_local_out+0x193/0x1f0 net/ipv4/ip_output.c:131 __ip_queue_xmit+0x885/0x1f40 net/ipv4/ip_output.c:533 __tcp_transmit_skb+0x3503/0x4f40 net/ipv4/tcp_output.c:1716 tcp_transmit_skb net/ipv4/tcp_output.c:1734 [inline] tcp_write_xmit+0x1130/0x8470 net/ipv4/tcp_output.c:3062 __tcp_push_pending_frames+0xaf/0x3b0 net/ipv4/tcp_output.c:3245 tcp_push+0x225/0x700 net/ipv4/tcp.c:772 tcp_sendmsg_locked+0x181b/0x4420 net/ipv4/tcp.c:1414 tcp_sendmsg+0x2e/0x50 net/ipv4/tcp.c:1451 inet_sendmsg+0xb9/0x140 net/ipv4/af_inet.c:865 sock_sendmsg_nosec net/socket.c:800 [inline] __sock_sendmsg net/socket.c:815 [inline] sock_write_iter+0x4ea/0x5b0 net/socket.c:1266 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x6af/0x1050 fs/read_write.c:687 ksys_write+0x1f8/0x250 fs/read_write.c:739 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2d0c1592d7 RSP: 002b:00007fff0ad6ad40 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000055555db32540 RCX: 00007f2d0c1592d7 RDX: 0000000000003790 RSI: 00007f2d093fc870 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000003790 R13: 000055555db46ed0 R14: 00007fff0ad6b320 R15: 00007f2d093fc870 task:kworker/0:0 state:R running task stack:22728 pid:9 tgid:9 ppid:2 task_flags:0x4208060 flags:0x00080000 Workqueue: events_power_efficient gc_worker Call Trace: context_switch kernel/sched/core.c:5526 [inline] __schedule+0x1259/0x6920 kernel/sched/core.c:7277 preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:7599 irqentry_exit_to_kernel_mode_preempt include/linux/irq-entry-common.h:468 [inline] irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline] irqentry_exit+0x205/0xa10 kernel/entry/common.c:167 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 RIP: 0010:lock_acquire+0x5e/0x380 kernel/locking/lockdep.c:5947 Code: 05 4f 50 a5 12 83 f8 07 0f 87 da 00 00 00 48 0f a3 05 5e f2 5d 0f 0f 82 c9 02 00 00 8b 35 fe 23 5e 0f 85 f6 0f 85 c7 00 00 00 <48> 8b 44 24 30 65 48 2b 05 ed 4f a5 12 0f 85 09 03 00 00 48 83 c4 RSP: 0018:ffffc900000e7ab0 EFLAGS: 00000206 RAX: 0000000000000046 RBX: 0000000000000000 RCX: 0000000000000200 RDX: 0000000000000000 RSI: ffffffff8e36652c RDI: ffffffff8c623580 RBP: ffffffff8edec4a0 R08: 000000003be0271b R09: 0000000000000007 R10: 0000000000000200 R11: 0000000000000001 R12: 0000000000000002 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 rcu_lock_acquire include/linux/rcupdate.h:309 [inline] rcu_read_lock include/linux/rcupdate.h:849 [inline] gc_worker+0x22b/0x1a10 net/netfilter/nf_conntrack_core.c:1532 process_one_work+0xac7/0x1b10 kernel/workqueue.c:3396 process_scheduled_works kernel/workqueue.c:3479 [inline] worker_thread+0x5ef/0xe50 kernel/workqueue.c:3560 kthread+0x373/0x450 kernel/kthread.c:436 ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 task:syz-executor state:R running task stack:22120 pid:5605 tgid:5605 ppid:1 task_flags:0x400140 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5526 [inline] __schedule+0x1259/0x6920 kernel/sched/core.c:7277 preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:7599 irqentry_exit_to_kernel_mode_preempt include/linux/irq-entry-common.h:468 [inline] irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline] irqentry_exit+0x205/0xa10 kernel/entry/common.c:167 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 RIP: 0010:lock_release+0x19e/0x310 kernel/locking/lockdep.c:5968 Code: ff 65 0f c1 05 1b 90 a5 12 83 f8 01 0f 85 27 01 00 00 9c 58 f6 c4 02 0f 85 12 01 00 00 41 f7 c6 00 02 00 00 0f 85 c8 00 00 00 <48> 8b 44 24 10 65 48 2b 05 1d 49 a5 12 0f 85 4d 01 00 00 48 83 c4 RSP: 0018:ffffc900036b74e0 EFLAGS: 00000206 RAX: 0000000000000046 RBX: ffffffff8edec4a0 RCX: ffffc900036b74ec RDX: 0000000000000000 RSI: ffffffff8e36652c RDI: ffffffff8c623580 RBP: ffffffff81b9a54e R08: 0000000000000001 R09: 0000000000000007 R10: 0000000000000200 R11: 0000000000017f73 R12: ffff888036bba580 R13: ffffc900036b7598 R14: 0000000000000202 R15: 0000000000000002 rcu_lock_release include/linux/rcupdate.h:319 [inline] rcu_read_unlock include/linux/rcupdate.h:880 [inline] class_rcu_destructor include/linux/rcupdate.h:1216 [inline] unwind_next_frame+0x3c3/0x2090 arch/x86/kernel/unwind_orc.c:495 arch_stack_walk+0x94/0xf0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122 save_stack+0x162/0x1e0 mm/page_owner.c:183 __reset_page_owner+0x84/0x190 mm/page_owner.c:338 reset_page_owner include/linux/page_owner.h:26 [inline] __free_pages_prepare mm/page_alloc.c:1418 [inline] __free_frozen_pages+0x79f/0x10f0 mm/page_alloc.c:2962 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x47/0xf0 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x1a0/0x1f0 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:350 kasan_slab_alloc include/linux/kasan.h:253 [inline] slab_post_alloc_hook mm/slub.c:4683 [inline] slab_alloc_node mm/slub.c:4996 [inline] kmem_cache_alloc_lru_noprof+0x265/0x6a0 mm/slub.c:5029 __d_alloc+0x35/0xa50 fs/dcache.c:1907 d_alloc_anon fs/dcache.c:2004 [inline] d_alloc_cursor+0x3e/0xe0 fs/dcache.c:2010 dcache_dir_open+0x3b/0x90 fs/libfs.c:87 do_dentry_open+0x6ab/0x14d0 fs/open.c:996 vfs_open+0x82/0x3f0 fs/open.c:1101 do_open fs/namei.c:4837 [inline] path_openat+0x19fa/0x2440 fs/namei.c:5000 do_file_open+0x20e/0x430 fs/namei.c:5029 do_sys_openat2+0x10f/0x1e0 fs/open.c:1417 do_sys_open fs/open.c:1423 [inline] __do_sys_openat fs/open.c:1439 [inline] __se_sys_openat fs/open.c:1434 [inline] __x64_sys_openat+0x12d/0x210 fs/open.c:1434 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe12299d47c RSP: 002b:00007ffc261a8900 EFLAGS: 00000206 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00000000000002d0 RCX: 00007fe12299d47c RDX: 0000000000090800 RSI: 00007fe122a349ad RDI: 00000000ffffff9c RBP: 00007ffc261a89ac R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 000000000000014b R13: 0000000000000000 R14: 0000000000027ea8 R15: 00007ffc261a8a00 task:syz-executor state:R running task stack:23736 pid:7038 tgid:7038 ppid:7015 task_flags:0x400140 flags:0x00080000 Call Trace: context_switch kernel/sched/core.c:5526 [inline] __schedule+0x1259/0x6920 kernel/sched/core.c:7277 preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:7599 irqentry_exit_to_kernel_mode_preempt include/linux/irq-entry-common.h:468 [inline] irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline] irqentry_exit+0x205/0xa10 kernel/entry/common.c:167 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 RIP: 0010:trace_lock_release include/trace/events/lock.h:68 [inline] RIP: 0010:lock_release+0x40/0x310 kernel/locking/lockdep.c:5954 Code: 2d ad 4a a5 12 48 89 6c 24 10 48 89 f5 0f 1f 44 00 00 65 8b 05 c9 4a a5 12 83 f8 07 0f 87 07 02 00 00 48 0f a3 05 d8 ec 5d 0f <0f> 82 02 02 00 00 8b 3d 78 1e 5e 0f 85 ff 0f 84 4a 01 00 00 65 8b RSP: 0018:ffffc90003d8f7e0 EFLAGS: 00000297 RAX: 0000000000000000 RBX: ffffffff8edec4a0 RCX: 0000000000000000 RDX: ffff88806a1c0000 RSI: ffffffff828bb05e RDI: ffffffff8edec4a0 RBP: ffffffff828bb05e R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffffea0001268a40 R13: 000000300c1f6c6c R14: 0000000000000000 R15: 00000000078404a6 rcu_lock_release include/linux/rcupdate.h:319 [inline] rcu_read_unlock include/linux/rcupdate.h:880 [inline] page_ext_put+0x43/0xd0 mm/page_ext.c:570 __reset_page_owner+0x7a/0x190 mm/page_owner.c:330 reset_page_owner include/linux/page_owner.h:26 [inline] __free_pages_prepare mm/page_alloc.c:1418 [inline] __free_frozen_pages+0x79f/0x10f0 mm/page_alloc.c:2962 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x47/0xf0 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x1a0/0x1f0 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:350 kasan_slab_alloc include/linux/kasan.h:253 [inline] slab_post_alloc_hook mm/slub.c:4683 [inline] slab_alloc_node mm/slub.c:4996 [inline] __do_kmalloc_node mm/slub.c:5413 [inline] __kmalloc_noprof+0x2cc/0x840 mm/slub.c:5439 _kmalloc_noprof include/linux/slab.h:995 [inline] tomoyo_realpath_from_path+0xb6/0x690 security/tomoyo/realpath.c:251 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_path_perm+0x276/0x460 security/tomoyo/file.c:827 security_inode_getattr+0x116/0x280 security/security.c:1895 vfs_getattr fs/stat.c:259 [inline] vfs_statx_path fs/stat.c:299 [inline] vfs_statx+0x11f/0x3f0 fs/stat.c:356 vfs_fstatat+0x77/0xe0 fs/stat.c:373 __do_sys_newfstatat+0x9d/0x120 fs/stat.c:538 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f262059c79a RSP: 002b:00007ffd3cb0b148 EFLAGS: 00000286 ORIG_RAX: 0000000000000106 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f262059c79a RDX: 00007ffd3cb0b170 RSI: 00007ffd3cb0b200 RDI: 00000000ffffff9c RBP: 00007ffd3cb0b200 R08: 00007ffd3cb0c200 R09: 00000000ffffffff R10: 0000000000000100 R11: 0000000000000286 R12: 00007ffd3cb0c290 R13: 00007f26206344bb R14: 0000000000027d8e R15: 00007ffd3cb0c2d0 task:crond state:R running task stack:24888 pid:5339 tgid:5339 ppid:1 task_flags:0x400000 flags:0x00080000 Call Trace: context_switch kernel/sched/core.c:5526 [inline] __schedule+0x1259/0x6920 kernel/sched/core.c:7277 preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:7599 irqentry_exit_to_kernel_mode_preempt include/linux/irq-entry-common.h:468 [inline] irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline] irqentry_exit+0x205/0xa10 kernel/entry/common.c:167 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 RIP: 0010:lock_acquire+0x5e/0x380 kernel/locking/lockdep.c:5947 Code: 05 4f 50 a5 12 83 f8 07 0f 87 da 00 00 00 48 0f a3 05 5e f2 5d 0f 0f 82 c9 02 00 00 8b 35 fe 23 5e 0f 85 f6 0f 85 c7 00 00 00 <48> 8b 44 24 30 65 48 2b 05 ed 4f a5 12 0f 85 09 03 00 00 48 83 c4 RSP: 0018:ffffc90003b1f598 EFLAGS: 00000206 RAX: 0000000000000046 RBX: 0000000000000000 RCX: 0000000000000200 RDX: 0000000000000000 RSI: ffffffff8e36652c RDI: ffffffff8c623580 RBP: ffffffff8edec4a0 R08: 000000004b011683 R09: 0000000000000007 R10: 0000000000000200 R11: 0000000000000001 R12: 0000000000000002 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 rcu_lock_acquire include/linux/rcupdate.h:309 [inline] rcu_read_lock include/linux/rcupdate.h:849 [inline] is_bpf_text_address+0x36/0x1a0 kernel/bpf/core.c:749 kernel_text_address kernel/extable.c:125 [inline] kernel_text_address+0x8d/0x100 kernel/extable.c:94 __kernel_text_address+0xd/0x30 kernel/extable.c:79 unwind_get_return_address+0x59/0xa0 arch/x86/kernel/unwind_orc.c:385 arch_stack_walk+0xa6/0xf0 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122 save_stack+0x162/0x1e0 mm/page_owner.c:183 __reset_page_owner+0x84/0x190 mm/page_owner.c:338 reset_page_owner include/linux/page_owner.h:26 [inline] __free_pages_prepare mm/page_alloc.c:1418 [inline] __free_frozen_pages+0x79f/0x10f0 mm/page_alloc.c:2962 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x47/0xf0 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x1a0/0x1f0 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:350 kasan_slab_alloc include/linux/kasan.h:253 [inline] slab_post_alloc_hook mm/slub.c:4683 [inline] slab_alloc_node mm/slub.c:4996 [inline] kmem_cache_alloc_noprof+0x269/0x6a0 mm/slub.c:5010 lsm_file_alloc security/security.c:171 [inline] security_file_alloc+0x34/0x2c0 security/security.c:2406 init_file+0x95/0x480 fs/file_table.c:184 alloc_empty_file+0x79/0x1c0 fs/file_table.c:266 path_openat+0xdb/0x2440 fs/namei.c:4986 do_file_open+0x20e/0x430 fs/namei.c:5029 do_sys_openat2+0x10f/0x1e0 fs/open.c:1417 do_sys_open fs/open.c:1423 [inline] __do_sys_openat fs/open.c:1439 [inline] __se_sys_openat fs/open.c:1434 [inline] __x64_sys_openat+0x12d/0x210 fs/open.c:1434 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fbc239d3c3a RSP: 002b:00007ffc6b3bc138 EFLAGS: 00000206 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00005630e4bb8300 RCX: 00007fbc239d3c3a RDX: 0000000000080000 RSI: 00007fbc23a7045a RDI: 00000000ffffff9c RBP: 0000000000000008 R08: 0000000000000008 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000206 R12: 00007fbc23a6e7f4 R13: 00007fbc23a6e7f4 R14: 0000000000000001 R15: 000000000000003a