INFO: task kworker/u4:6:2440 blocked for more than 144 seconds. Not tainted 5.18.0-rc7-syzkaller-01833-gaa5334b1f968 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:6 state:D stack:26584 pid: 2440 ppid: 2 flags:0x00004000 Workqueue: events_unbound fsnotify_mark_destroy_workfn Call Trace: context_switch kernel/sched/core.c:5073 [inline] __schedule+0xa9a/0x4cc0 kernel/sched/core.c:6388 schedule+0xd2/0x1f0 kernel/sched/core.c:6460 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1860 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x373/0x530 kernel/sched/completion.c:106 __synchronize_srcu+0x1f2/0x290 kernel/rcu/srcutree.c:930 fsnotify_mark_destroy_workfn+0xfd/0x3c0 fs/notify/mark.c:864 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:298 INFO: task kworker/u4:7:3958 blocked for more than 145 seconds. Not tainted 5.18.0-rc7-syzkaller-01833-gaa5334b1f968 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:7 state:D stack:28384 pid: 3958 ppid: 2 flags:0x00004000 Workqueue: events_unbound fsnotify_connector_destroy_workfn Call Trace: context_switch kernel/sched/core.c:5073 [inline] __schedule+0xa9a/0x4cc0 kernel/sched/core.c:6388 schedule+0xd2/0x1f0 kernel/sched/core.c:6460 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1860 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x373/0x530 kernel/sched/completion.c:106 __synchronize_srcu+0x1f2/0x290 kernel/rcu/srcutree.c:930 fsnotify_connector_destroy_workfn+0x49/0xa0 fs/notify/mark.c:164 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:298 Showing all locks held in the system: 3 locks held by kworker/u4:0/8: 1 lock held by khungtaskd/28: #0: ffffffff8bd81f60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6467 2 locks held by kworker/u4:6/2440: #0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc9000b067da8 ((reaper_work).work){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 2 locks held by getty/3282: #0: ffff88814cd9b098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244 #1: ffffc90002cd62e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcea/0x1230 drivers/tty/n_tty.c:2075 3 locks held by syz-executor.1/3616: 3 locks held by kworker/1:8/3663: 2 locks held by kworker/u4:7/3958: #0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc90002cffda8 (connector_reaper_work){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 2 locks held by dhcpcd/4718: #0: ffff88804a660130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1691 [inline] #0: ffff88804a660130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2f/0xdc0 net/packet/af_packet.c:3192 #1: ffffffff8bd8bd20 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline] #1: ffffffff8bd8bd20 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x4fa/0x620 kernel/rcu/tree_exp.h:841 1 lock held by dhcpcd/4721: #0: ffff88804a664130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1691 [inline] #0: ffff88804a664130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2f/0xdc0 net/packet/af_packet.c:3192 2 locks held by dhcpcd/4722: #0: ffff88807aa56130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1691 [inline] #0: ffff88807aa56130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2f/0xdc0 net/packet/af_packet.c:3192 #1: ffffffff8bd8bd20 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline] #1: ffffffff8bd8bd20 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x2d5/0x620 kernel/rcu/tree_exp.h:841 1 lock held by dhcpcd/4723: #0: ffff88804a662130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1691 [inline] #0: ffff88804a662130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2f/0xdc0 net/packet/af_packet.c:3192 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 28 Comm: khungtaskd Not tainted 5.18.0-rc7-syzkaller-01833-gaa5334b1f968 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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:298 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 5103 Comm: syz-executor.4 Not tainted 5.18.0-rc7-syzkaller-01833-gaa5334b1f968 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:clear_page_erms+0x9/0x10 arch/x86/lib/clear_page_64.S:50 Code: 47 18 48 89 47 20 48 89 47 28 48 89 47 30 48 89 47 38 48 8d 7f 40 75 d9 90 c3 0f 1f 80 00 00 00 00 b9 00 10 00 00 31 c0 f3 aa cc cc cc cc cc cc 41 57 41 56 41 55 41 54 55 53 48 89 fb 48 83 RSP: 0018:ffffc900045af520 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffffea00015ff380 RSI: ffff888000000000 RDI: ffff888057fcf000 RBP: ffffea00015ff380 R08: 0000160000000000 R09: ffffea00015ff3c0 R10: fffff940002bfe76 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 FS: 00007f56d3ffe700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fde3739d090 CR3: 000000005214c000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: clear_page arch/x86/include/asm/page_64.h:50 [inline] clear_highpage include/linux/highmem.h:217 [inline] kernel_init_free_pages mm/page_alloc.c:1293 [inline] post_alloc_hook+0x269/0x300 mm/page_alloc.c:2429 prep_new_page mm/page_alloc.c:2441 [inline] get_page_from_freelist+0xba2/0x3e00 mm/page_alloc.c:4182 __alloc_pages+0x1b2/0x500 mm/page_alloc.c:5408 alloc_pages+0x1aa/0x310 mm/mempolicy.c:2272 __get_free_pages+0x8/0x40 mm/page_alloc.c:5457 kasan_populate_vmalloc_pte mm/kasan/shadow.c:271 [inline] kasan_populate_vmalloc_pte+0x25/0x160 mm/kasan/shadow.c:262 apply_to_pte_range mm/memory.c:2547 [inline] apply_to_pmd_range mm/memory.c:2591 [inline] apply_to_pud_range mm/memory.c:2627 [inline] apply_to_p4d_range mm/memory.c:2663 [inline] __apply_to_page_range+0x686/0x1030 mm/memory.c:2697 alloc_vmap_area+0xb0f/0x1f00 mm/vmalloc.c:1594 __get_vm_area_node+0x142/0x3f0 mm/vmalloc.c:2455 __vmalloc_node_range+0x250/0x13e0 mm/vmalloc.c:3127 __bpf_map_area_alloc+0xd5/0x150 kernel/bpf/syscall.c:332 bloom_map_alloc+0x322/0x620 kernel/bpf/bloom_filter.c:145 find_and_alloc_map kernel/bpf/syscall.c:131 [inline] map_create kernel/bpf/syscall.c:1082 [inline] __sys_bpf+0xbfc/0x56b0 kernel/bpf/syscall.c:4871 __do_sys_bpf kernel/bpf/syscall.c:4993 [inline] __se_sys_bpf kernel/bpf/syscall.c:4991 [inline] __x64_sys_bpf+0x75/0xb0 kernel/bpf/syscall.c:4991 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+0x44/0xae RIP: 0033:0x7f56d48890e9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f56d3ffe168 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f56d499bf60 RCX: 00007f56d48890e9 RDX: 0000000000000048 RSI: 00000000200000c0 RDI: 0000000000000000 RBP: 00007f56d48e308d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc353836bf R14: 00007f56d3ffe300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 47 18 48 89 rex.RXB sbb %r9b,-0x77(%r8) 4: 47 20 48 89 rex.RXB and %r9b,-0x77(%r8) 8: 47 28 48 89 rex.RXB sub %r9b,-0x77(%r8) c: 47 30 48 89 rex.RXB xor %r9b,-0x77(%r8) 10: 47 38 48 8d rex.RXB cmp %r9b,-0x73(%r8) 14: 7f 40 jg 0x56 16: 75 d9 jne 0xfffffff1 18: 90 nop 19: c3 retq 1a: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 21: b9 00 10 00 00 mov $0x1000,%ecx 26: 31 c0 xor %eax,%eax 28: f3 aa rep stos %al,%es:(%rdi) * 2a: c3 retq <-- trapping instruction 2b: cc int3 2c: cc int3 2d: cc int3 2e: cc int3 2f: cc int3 30: cc int3 31: 41 57 push %r15 33: 41 56 push %r14 35: 41 55 push %r13 37: 41 54 push %r12 39: 55 push %rbp 3a: 53 push %rbx 3b: 48 89 fb mov %rdi,%rbx 3e: 48 rex.W 3f: 83 .byte 0x83