rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P14682/1:b..l (detected by 0, t=10503 jiffies, g=301605, q=196 ncpus=2) task:kworker/u4:4 state:R running task stack:25384 pid:14682 ppid: 2 flags:0x00004000 Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet Call Trace: context_switch kernel/sched/core.c:5116 [inline] __schedule+0xa00/0x4b30 kernel/sched/core.c:6428 preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:6736 irqentry_exit+0x31/0x80 kernel/entry/common.c:428 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:lock_acquire+0x1ef/0x570 kernel/locking/lockdep.c:5633 Code: f2 a4 7e 83 f8 01 0f 85 e8 02 00 00 9c 58 f6 c4 02 0f 85 fb 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24 RSP: 0018:ffffc900039d7aa0 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: 1ffff9200073af56 RCX: 871e6d97e0f2bad0 RDX: 1ffff110045ef18b RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff90679907 R10: fffffbfff20cf320 R11: 0000000000000001 R12: 0000000000000002 R13: 0000000000000000 R14: ffffffff8bd83ce0 R15: 0000000000000000 rcu_lock_acquire include/linux/rcupdate.h:269 [inline] rcu_read_lock include/linux/rcupdate.h:695 [inline] batadv_iv_ogm_slide_own_bcast_window net/batman-adv/bat_iv_ogm.c:755 [inline] batadv_iv_ogm_schedule_buff+0x5d2/0x1430 net/batman-adv/bat_iv_ogm.c:826 batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:869 [inline] batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:862 [inline] batadv_iv_send_outstanding_bat_ogm_packet+0x740/0x910 net/batman-adv/bat_iv_ogm.c:1713 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:302 rcu: rcu_preempt kthread timer wakeup didn't happen for 10480 jiffies! g301605 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 rcu: Possible timer handling issue on cpu=1 timer-softirq=176900 rcu: rcu_preempt kthread starved for 10481 jiffies! g301605 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1 rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. rcu: RCU grace-period kthread stack dump: task:rcu_preempt state:I stack:28368 pid: 17 ppid: 2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5116 [inline] __schedule+0xa00/0x4b30 kernel/sched/core.c:6428 schedule+0xd2/0x1f0 kernel/sched/core.c:6500 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1935 rcu_gp_fqs_loop+0x186/0x810 kernel/rcu/tree.c:1999 rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2187 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302 rcu: Stack dump where RCU GP kthread last ran: Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 26070 Comm: syz-executor.3 Not tainted 5.19.0-rc1-syzkaller-00262-g0885eacdc81f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__rb_erase_augmented include/linux/rbtree_augmented.h:201 [inline] RIP: 0010:rb_erase+0x0/0x1210 lib/rbtree.c:443 Code: 08 4c 8b 04 24 e9 1f f6 ff ff e8 9b 7e a5 fd 48 8b 54 24 08 4c 8b 04 24 e9 f7 f5 ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 <48> b8 00 00 00 00 00 fc ff df 41 57 49 89 f7 41 56 41 55 49 89 fd RSP: 0018:ffffc900003f8dd0 EFLAGS: 00000046 RAX: 0000000080010002 RBX: ffff88807b9d8340 RCX: 0000000000000000 RDX: ffff8880773ec180 RSI: ffff8880b9b2a650 RDI: ffff88807b9d8340 RBP: ffff8880b9b2a650 R08: 0000000000000006 R09: 0000000000000001 R10: ffff88807b9d8340 R11: 0000000000000001 R12: ffff8880b9b2a658 R13: 0000000000000000 R14: ffff8880b9b2a500 R15: 0000000000000000 FS: 00007f1196f5e700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb7eab6c058 CR3: 000000009d7b8000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 000000000000003b DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: rb_erase_cached include/linux/rbtree.h:126 [inline] timerqueue_del+0x7f/0x140 lib/timerqueue.c:57 __remove_hrtimer+0xa1/0x2a0 kernel/time/hrtimer.c:1116 __run_hrtimer kernel/time/hrtimer.c:1665 [inline] __hrtimer_run_queues+0x4ea/0xe50 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline] __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1112 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:finish_task_switch.isra.0+0x323/0xb80 kernel/sched/core.c:4996 Code: 73 40 25 08 85 c0 75 02 0f 0b 48 85 db 0f 85 25 01 00 00 4c 89 f7 e8 fc f7 ff ff e8 57 71 2e 00 fb 65 48 8b 1c 25 80 6f 02 00 <48> 8d bb 80 15 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 RSP: 0018:ffffc90006ea7500 EFLAGS: 00000202 RAX: 0000000000004db9 RBX: ffff8880773ec180 RCX: 1ffffffff1b753f9 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90006ea7548 R08: 0000000000000001 R09: 0000000000000001 R10: ffffed10173673f8 R11: 0000000000000001 R12: ffff8880b9b3ad18 R13: ffff888028012100 R14: ffff8880b9b39fc0 R15: ffff8880b9b3a9f8 context_switch kernel/sched/core.c:5119 [inline] __schedule+0xa08/0x4b30 kernel/sched/core.c:6428 schedule+0xd2/0x1f0 kernel/sched/core.c:6500 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1911 unix_wait_for_peer+0x244/0x280 net/unix/af_unix.c:1397 unix_dgram_sendmsg+0x1855/0x1ad0 net/unix/af_unix.c:1992 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:734 ____sys_sendmsg+0x334/0x810 net/socket.c:2492 ___sys_sendmsg+0xf3/0x170 net/socket.c:2546 __sys_sendmmsg+0x195/0x470 net/socket.c:2632 __do_sys_sendmmsg net/socket.c:2661 [inline] __se_sys_sendmmsg net/socket.c:2658 [inline] __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2658 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+0x46/0xb0 RIP: 0033:0x7f1195e89109 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:00007f1196f5e168 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007f1195f9bf60 RCX: 00007f1195e89109 RDX: 0000000000000318 RSI: 00000000200bd000 RDI: 0000000000000004 RBP: 00007f1195ee30ad R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe17a5ebdf R14: 00007f1196f5e300 R15: 0000000000022000 watchdog: BUG: soft lockup - CPU#0 stuck for 248s! [syz-executor.3:26076] Modules linked in: irq event stamp: 145126 hardirqs last enabled at (145125): [] asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:649 hardirqs last disabled at (145126): [] sysvec_apic_timer_interrupt+0xb/0xc0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (46162): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last enabled at (46162): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 softirqs last disabled at (46117): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last disabled at (46117): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 CPU: 0 PID: 26076 Comm: syz-executor.3 Not tainted 5.19.0-rc1-syzkaller-00262-g0885eacdc81f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:csd_lock_wait kernel/smp.c:414 [inline] RIP: 0010:smp_call_function_many_cond+0x49e/0x1110 kernel/smp.c:988 Code: 98 0a 00 85 ed 74 47 48 8b 04 24 49 89 c4 83 e0 07 49 c1 ec 03 48 89 c5 4d 01 fc 83 c5 03 e8 89 9c 0a 00 f3 90 41 0f b6 04 24 <40> 38 c5 7c 08 84 c0 0f 85 21 0a 00 00 8b 43 08 31 ff 83 e0 01 41 RSP: 0018:ffffc900071c7350 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff8880b9b3f760 RCX: ffffc9000495a000 RDX: 0000000000040000 RSI: ffffffff816f0787 RDI: 0000000000000005 RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffffed1017367eed R13: 0000000000000001 R14: 0000000000000001 R15: dffffc0000000000 FS: 00007f1196f3d700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200da030 CR3: 000000009d7b8000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 000000000000003b DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: on_each_cpu_cond_mask+0x56/0xa0 kernel/smp.c:1154 __flush_tlb_multi arch/x86/include/asm/paravirt.h:87 [inline] flush_tlb_multi arch/x86/mm/tlb.c:901 [inline] flush_tlb_mm_range+0x2e0/0x410 arch/x86/mm/tlb.c:987 flush_tlb_page arch/x86/include/asm/tlbflush.h:239 [inline] ptep_clear_flush+0x12b/0x160 mm/pgtable-generic.c:98 wp_page_copy+0x8bc/0x1e20 mm/memory.c:3169 do_wp_page+0x573/0x1b60 mm/memory.c:3396 handle_pte_fault mm/memory.c:4921 [inline] __handle_mm_fault+0x2371/0x3f50 mm/memory.c:5042 handle_mm_fault+0x1c8/0x790 mm/memory.c:5140 do_user_addr_fault+0x489/0x11c0 arch/x86/mm/fault.c:1397 handle_page_fault arch/x86/mm/fault.c:1484 [inline] exc_page_fault+0x9e/0x180 arch/x86/mm/fault.c:1540 asm_exc_page_fault+0x27/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0010:__put_user_nocheck_4+0x3/0x11 Code: 00 00 48 39 d9 73 54 0f 01 cb 66 89 01 31 c9 0f 01 ca c3 0f 1f 44 00 00 48 bb fd ef ff ff ff 7f 00 00 48 39 d9 73 34 0f 01 cb <89> 01 31 c9 0f 01 ca c3 66 0f 1f 44 00 00 48 bb f9 ef ff ff ff 7f RSP: 0018:ffffc900071c79c0 EFLAGS: 00050246 RAX: 0000000000000000 RBX: ffffc900071c7e04 RCX: 00000000200da030 RDX: 0000000000000000 RSI: ffffffff87492db5 RDI: 0000000000000005 RBP: ffffc900071c7dc0 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000001 R12: 00000000200da030 R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000000 ____sys_recvmsg+0x3b4/0x600 net/socket.c:2724 ___sys_recvmsg+0x127/0x200 net/socket.c:2753 do_recvmmsg+0x254/0x6d0 net/socket.c:2847 __sys_recvmmsg net/socket.c:2926 [inline] __do_sys_recvmmsg net/socket.c:2949 [inline] __se_sys_recvmmsg net/socket.c:2942 [inline] __x64_sys_recvmmsg+0x20b/0x260 net/socket.c:2942 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+0x46/0xb0 RIP: 0033:0x7f1195e89109 ================================ WARNING: inconsistent lock state 5.19.0-rc1-syzkaller-00262-g0885eacdc81f #0 Not tainted -------------------------------- inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage. syz-executor.3/26076 [HC1[1]:SC0[0]:HE0:SE1] takes: ffffffff8beb3058 (vmap_area_lock){?.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:349 [inline] ffffffff8beb3058 (vmap_area_lock){?.+.}-{2:2}, at: find_vmap_area mm/vmalloc.c:1805 [inline] ffffffff8beb3058 (vmap_area_lock){?.+.}-{2:2}, at: find_vm_area+0x1c/0x190 mm/vmalloc.c:2525 {HARDIRQ-ON-W} state was registered at: lock_acquire kernel/locking/lockdep.c:5665 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:349 [inline] alloc_vmap_area+0xa49/0x1f00 mm/vmalloc.c:1586 __get_vm_area_node+0x142/0x3f0 mm/vmalloc.c:2453 __vmalloc_node_range+0x250/0x13e0 mm/vmalloc.c:3125 __vmalloc_node mm/vmalloc.c:3230 [inline] __vmalloc+0x69/0x80 mm/vmalloc.c:3244 pcpu_mem_zalloc mm/percpu.c:516 [inline] pcpu_mem_zalloc+0x51/0xa0 mm/percpu.c:508 pcpu_alloc_chunk mm/percpu.c:1454 [inline] pcpu_create_chunk+0xd7/0x930 mm/percpu-vm.c:338 pcpu_alloc+0x1012/0x13d0 mm/percpu.c:1834 alloc_kmem_cache_cpus.constprop.0+0x29/0xc0 mm/slab.c:1729 do_tune_cpucache+0x37/0x230 mm/slab.c:3844 enable_cpucache+0x3c/0xa0 mm/slab.c:3938 kmem_cache_init_late+0x33/0x66 mm/slab.c:1276 start_kernel+0x2f5/0x48f init/main.c:1058 secondary_startup_64_no_verify+0xce/0xdb irq event stamp: 145126 hardirqs last enabled at (145125): [] asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:649 hardirqs last disabled at (145126): [] sysvec_apic_timer_interrupt+0xb/0xc0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (46162): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last enabled at (46162): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 softirqs last disabled at (46117): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last disabled at (46117): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(vmap_area_lock); lock(vmap_area_lock); *** DEADLOCK *** 2 locks held by syz-executor.3/26076: #0: ffff8880767f71a8 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline] #0: ffff8880767f71a8 (&mm->mmap_lock#2){++++}-{3:3}, at: do_user_addr_fault+0x285/0x11c0 arch/x86/mm/fault.c:1338 #1: ffff888022d9d618 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:349 [inline] #1: ffff888022d9d618 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: wp_page_copy+0x68c/0x1e20 mm/memory.c:3139 stack backtrace: CPU: 0 PID: 26076 Comm: syz-executor.3 Not tainted 5.19.0-rc1-syzkaller-00262-g0885eacdc81f #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 print_usage_bug kernel/locking/lockdep.c:3961 [inline] valid_state kernel/locking/lockdep.c:3973 [inline] mark_lock_irq kernel/locking/lockdep.c:4176 [inline] mark_lock.part.0.cold+0x18/0xd8 kernel/locking/lockdep.c:4632 mark_lock kernel/locking/lockdep.c:4596 [inline] mark_usage kernel/locking/lockdep.c:4524 [inline] __lock_acquire+0x14ad/0x5660 kernel/locking/lockdep.c:5007 lock_acquire kernel/locking/lockdep.c:5665 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:349 [inline] find_vmap_area mm/vmalloc.c:1805 [inline] find_vm_area+0x1c/0x190 mm/vmalloc.c:2525 check_heap_object mm/usercopy.c:176 [inline] __check_object_size mm/usercopy.c:252 [inline] __check_object_size+0x1fb/0x7a0 mm/usercopy.c:214 check_object_size include/linux/thread_info.h:199 [inline] __copy_from_user_inatomic include/linux/uaccess.h:62 [inline] copy_from_user_nmi arch/x86/lib/usercopy.c:47 [inline] copy_from_user_nmi+0xcb/0x130 arch/x86/lib/usercopy.c:31 copy_code arch/x86/kernel/dumpstack.c:91 [inline] show_opcodes+0x59/0xb0 arch/x86/kernel/dumpstack.c:121 show_iret_regs+0xd/0x33 arch/x86/kernel/dumpstack.c:149 __show_regs+0x1e/0x60 arch/x86/kernel/process_64.c:74 show_trace_log_lvl+0x25b/0x2ba arch/x86/kernel/dumpstack.c:292 watchdog_timer_fn+0x469/0x5d0 kernel/watchdog.c:435 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x1c0/0xe50 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline] __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1112 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:csd_lock_wait kernel/smp.c:414 [inline] RIP: 0010:smp_call_function_many_cond+0x49e/0x1110 kernel/smp.c:988 Code: 98 0a 00 85 ed 74 47 48 8b 04 24 49 89 c4 83 e0 07 49 c1 ec 03 48 89 c5 4d 01 fc 83 c5 03 e8 89 9c 0a 00 f3 90 41 0f b6 04 24 <40> 38 c5 7c 08 84 c0 0f 85 21 0a 00 00 8b 43 08 31 ff 83 e0 01 41 RSP: 0018:ffffc900071c7350 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff8880b9b3f760 RCX: ffffc9000495a000 RDX: 0000000000040000 RSI: ffffffff816f0787 RDI: 0000000000000005 RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffffed1017367eed R13: 0000000000000001 R14: 0000000000000001 R15: dffffc0000000000 on_each_cpu_cond_mask+0x56/0xa0 kernel/smp.c:1154 __flush_tlb_multi arch/x86/include/asm/paravirt.h:87 [inline] flush_tlb_multi arch/x86/mm/tlb.c:901 [inline] flush_tlb_mm_range+0x2e0/0x410 arch/x86/mm/tlb.c:987 flush_tlb_page arch/x86/include/asm/tlbflush.h:239 [inline] ptep_clear_flush+0x12b/0x160 mm/pgtable-generic.c:98 wp_page_copy+0x8bc/0x1e20 mm/memory.c:3169 do_wp_page+0x573/0x1b60 mm/memory.c:3396 handle_pte_fault mm/memory.c:4921 [inline] __handle_mm_fault+0x2371/0x3f50 mm/memory.c:5042 handle_mm_fault+0x1c8/0x790 mm/memory.c:5140 do_user_addr_fault+0x489/0x11c0 arch/x86/mm/fault.c:1397 handle_page_fault arch/x86/mm/fault.c:1484 [inline] exc_page_fault+0x9e/0x180 arch/x86/mm/fault.c:1540 asm_exc_page_fault+0x27/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0010:__put_user_nocheck_4+0x3/0x11 Code: 00 00 48 39 d9 73 54 0f 01 cb 66 89 01 31 c9 0f 01 ca c3 0f 1f 44 00 00 48 bb fd ef ff ff ff 7f 00 00 48 39 d9 73 34 0f 01 cb <89> 01 31 c9 0f 01 ca c3 66 0f 1f 44 00 00 48 bb f9 ef ff ff ff 7f RSP: 0018:ffffc900071c79c0 EFLAGS: 00050246 RAX: 0000000000000000 RBX: ffffc900071c7e04 RCX: 00000000200da030 RDX: 0000000000000000 RSI: ffffffff87492db5 RDI: 0000000000000005 RBP: ffffc900071c7dc0 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000001 R12: 00000000200da030 R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000000 ____sys_recvmsg+0x3b4/0x600 net/socket.c:2724 ___sys_recvmsg+0x127/0x200 net/socket.c:2753 do_recvmmsg+0x254/0x6d0 net/socket.c:2847 __sys_recvmmsg net/socket.c:2926 [inline] __do_sys_recvmmsg net/socket.c:2949 [inline] __se_sys_recvmmsg net/socket.c:2942 [inline] __x64_sys_recvmmsg+0x20b/0x260 net/socket.c:2942 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+0x46/0xb0 RIP: 0033:0x7f1195e89109 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:00007f1196f3d168 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007f1195f9c030 RCX: 00007f1195e89109 RDX: 0000000000010106 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 00007f1195ee30ad R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe17a5ebdf R14: 00007f1196f3d300 R15: 0000000000022000 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:00007f1196f3d168 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007f1195f9c030 RCX: 00007f1195e89109 RDX: 0000000000010106 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 00007f1195ee30ad R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe17a5ebdf R14: 00007f1196f3d300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 26070 Comm: syz-executor.3 Not tainted 5.19.0-rc1-syzkaller-00262-g0885eacdc81f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:enqueue_hrtimer+0xfe/0x3e0 kernel/time/hrtimer.c:1086 Code: 0f 87 f9 29 c9 07 e8 41 dc 0f 00 44 89 e1 b8 01 00 00 00 48 ba 00 00 00 00 00 fc ff df d3 e0 48 89 d9 48 c1 e9 03 80 3c 11 00 <0f> 85 9a 02 00 00 48 ba 00 00 00 00 00 fc ff df 4c 8b 23 49 8d 7c RSP: 0018:ffffc900003f8e10 EFLAGS: 00000046 RAX: 0000000000000002 RBX: ffff8880b9b2a600 RCX: 1ffff110173654c0 RDX: dffffc0000000000 RSI: ffffffff8169c7cf RDI: 0000000000000005 RBP: ffff88807b9d8340 R08: 0000000000000005 R09: 000000000000001f R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001 R13: 0000000000000000 R14: ffff8880b9b2a500 R15: 0000000000000001 FS: 00007f1196f5e700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb7eab6c058 CR3: 000000009d7b8000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 000000000000003b DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: __run_hrtimer kernel/time/hrtimer.c:1702 [inline] __hrtimer_run_queues+0xb02/0xe50 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline] __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1112 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:finish_task_switch.isra.0+0x323/0xb80 kernel/sched/core.c:4996 Code: 73 40 25 08 85 c0 75 02 0f 0b 48 85 db 0f 85 25 01 00 00 4c 89 f7 e8 fc f7 ff ff e8 57 71 2e 00 fb 65 48 8b 1c 25 80 6f 02 00 <48> 8d bb 80 15 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 RSP: 0018:ffffc90006ea7500 EFLAGS: 00000202 RAX: 0000000000004db9 RBX: ffff8880773ec180 RCX: 1ffffffff1b753f9 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90006ea7548 R08: 0000000000000001 R09: 0000000000000001 R10: ffffed10173673f8 R11: 0000000000000001 R12: ffff8880b9b3ad18 R13: ffff888028012100 R14: ffff8880b9b39fc0 R15: ffff8880b9b3a9f8 context_switch kernel/sched/core.c:5119 [inline] __schedule+0xa08/0x4b30 kernel/sched/core.c:6428 schedule+0xd2/0x1f0 kernel/sched/core.c:6500 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1911 unix_wait_for_peer+0x244/0x280 net/unix/af_unix.c:1397 unix_dgram_sendmsg+0x1855/0x1ad0 net/unix/af_unix.c:1992 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:734 ____sys_sendmsg+0x334/0x810 net/socket.c:2492 ___sys_sendmsg+0xf3/0x170 net/socket.c:2546 __sys_sendmmsg+0x195/0x470 net/socket.c:2632 __do_sys_sendmmsg net/socket.c:2661 [inline] __se_sys_sendmmsg net/socket.c:2658 [inline] __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2658 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+0x46/0xb0 RIP: 0033:0x7f1195e89109 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:00007f1196f5e168 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007f1195f9bf60 RCX: 00007f1195e89109 RDX: 0000000000000318 RSI: 00000000200bd000 RDI: 0000000000000004 RBP: 00007f1195ee30ad R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe17a5ebdf R14: 00007f1196f5e300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: f2 a4 repnz movsb %ds:(%rsi),%es:(%rdi) 2: 7e 83 jle 0xffffff87 4: f8 clc 5: 01 0f add %ecx,(%rdi) 7: 85 e8 test %ebp,%eax 9: 02 00 add (%rax),%al b: 00 9c 58 f6 c4 02 0f add %bl,0xf02c4f6(%rax,%rbx,2) 12: 85 fb test %edi,%ebx 14: 02 00 add (%rax),%al 16: 00 48 83 add %cl,-0x7d(%rax) 19: 7c 24 jl 0x3f 1b: 08 00 or %al,(%rax) 1d: 74 01 je 0x20 1f: fb sti 20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 27: fc ff df * 2a: 48 01 c3 add %rax,%rbx <-- trapping instruction 2d: 48 c7 03 00 00 00 00 movq $0x0,(%rbx) 34: 48 c7 43 08 00 00 00 movq $0x0,0x8(%rbx) 3b: 00 3c: 48 rex.W 3d: 8b .byte 0x8b 3e: 84 .byte 0x84 3f: 24 .byte 0x24