===================================================== WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected 4.19.51 #23 Not tainted ----------------------------------------------------- syz-executor.3/24741 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire: 00000000aca3146c (&ctx->fault_pending_wqh){+.+.}, at: spin_lock include/linux/spinlock.h:329 [inline] 00000000aca3146c (&ctx->fault_pending_wqh){+.+.}, at: userfaultfd_ctx_read fs/userfaultfd.c:1046 [inline] 00000000aca3146c (&ctx->fault_pending_wqh){+.+.}, at: userfaultfd_read+0x394/0x18c0 fs/userfaultfd.c:1204 and this task is already holding: 000000004fa170c3 (&ctx->fd_wqh){....}, at: spin_lock_irq include/linux/spinlock.h:354 [inline] 000000004fa170c3 (&ctx->fd_wqh){....}, at: userfaultfd_ctx_read fs/userfaultfd.c:1042 [inline] 000000004fa170c3 (&ctx->fd_wqh){....}, at: userfaultfd_read+0x262/0x18c0 fs/userfaultfd.c:1204 kobject: 'loop4' (00000000d6ecc389): kobject_uevent_env which would create a new lock dependency: (&ctx->fd_wqh){....} -> (&ctx->fault_pending_wqh){+.+.} but this new dependency connects a SOFTIRQ-irq-safe lock: (&(&ctx->ctx_lock)->rlock){..-.} ... which became SOFTIRQ-irq-safe at: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline] _raw_spin_lock_irq+0x60/0x80 kernel/locking/spinlock.c:160 spin_lock_irq include/linux/spinlock.h:354 [inline] free_ioctx_users+0x2d/0x490 fs/aio.c:614 percpu_ref_put_many include/linux/percpu-refcount.h:284 [inline] percpu_ref_put include/linux/percpu-refcount.h:300 [inline] percpu_ref_call_confirm_rcu lib/percpu-refcount.c:123 [inline] percpu_ref_switch_to_atomic_rcu+0x407/0x540 lib/percpu-refcount.c:158 kobject: 'loop4' (00000000d6ecc389): fill_kobj_path: path = '/devices/virtual/block/loop4' __rcu_reclaim kernel/rcu/rcu.h:236 [inline] rcu_do_batch kernel/rcu/tree.c:2584 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2897 [inline] __rcu_process_callbacks kernel/rcu/tree.c:2864 [inline] rcu_process_callbacks+0xba0/0x1a30 kernel/rcu/tree.c:2881 __do_softirq+0x25c/0x921 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1056 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:869 native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60 arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:556 default_idle_call+0x36/0x90 kernel/sched/idle.c:93 cpuidle_idle_call kernel/sched/idle.c:153 [inline] do_idle+0x377/0x560 kernel/sched/idle.c:262 cpu_startup_entry+0xc8/0xe0 kernel/sched/idle.c:368 rest_init+0xf1/0xf6 init/main.c:442 start_kernel+0x88c/0x8c5 init/main.c:738 x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:470 x86_64_start_kernel+0x77/0x7b arch/x86/kernel/head64.c:451 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243 to a SOFTIRQ-irq-unsafe lock: (&ctx->fault_pending_wqh){+.+.} ... which became SOFTIRQ-irq-unsafe at: ... lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] userfaultfd_release+0x4d6/0x720 fs/userfaultfd.c:922 __fput+0x2dd/0x8b0 fs/file_table.c:278 ____fput+0x16/0x20 fs/file_table.c:309 task_work_run+0x145/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x273/0x2c0 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x53d/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Chain exists of: &(&ctx->ctx_lock)->rlock --> &ctx->fd_wqh --> &ctx->fault_pending_wqh Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ctx->fault_pending_wqh); local_irq_disable(); lock(&(&ctx->ctx_lock)->rlock); lock(&ctx->fd_wqh); kobject: 'loop0' (00000000e4cef74e): kobject_uevent_env lock(&(&ctx->ctx_lock)->rlock); *** DEADLOCK *** kobject: 'loop0' (00000000e4cef74e): fill_kobj_path: path = '/devices/virtual/block/loop0' 1 lock held by syz-executor.3/24741: #0: 000000004fa170c3 (&ctx->fd_wqh){....}, at: spin_lock_irq include/linux/spinlock.h:354 [inline] #0: 000000004fa170c3 (&ctx->fd_wqh){....}, at: userfaultfd_ctx_read fs/userfaultfd.c:1042 [inline] #0: 000000004fa170c3 (&ctx->fd_wqh){....}, at: userfaultfd_read+0x262/0x18c0 fs/userfaultfd.c:1204 the dependencies between SOFTIRQ-irq-safe lock and the holding lock: -> (&(&ctx->ctx_lock)->rlock){..-.} ops: 57 { IN-SOFTIRQ-W at: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline] _raw_spin_lock_irq+0x60/0x80 kernel/locking/spinlock.c:160 spin_lock_irq include/linux/spinlock.h:354 [inline] free_ioctx_users+0x2d/0x490 fs/aio.c:614 percpu_ref_put_many include/linux/percpu-refcount.h:284 [inline] percpu_ref_put include/linux/percpu-refcount.h:300 [inline] percpu_ref_call_confirm_rcu lib/percpu-refcount.c:123 [inline] percpu_ref_switch_to_atomic_rcu+0x407/0x540 lib/percpu-refcount.c:158 __rcu_reclaim kernel/rcu/rcu.h:236 [inline] rcu_do_batch kernel/rcu/tree.c:2584 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2897 [inline] __rcu_process_callbacks kernel/rcu/tree.c:2864 [inline] rcu_process_callbacks+0xba0/0x1a30 kernel/rcu/tree.c:2881 __do_softirq+0x25c/0x921 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1056 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:869 native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60 arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:556 default_idle_call+0x36/0x90 kernel/sched/idle.c:93 cpuidle_idle_call kernel/sched/idle.c:153 [inline] do_idle+0x377/0x560 kernel/sched/idle.c:262 cpu_startup_entry+0xc8/0xe0 kernel/sched/idle.c:368 rest_init+0xf1/0xf6 init/main.c:442 start_kernel+0x88c/0x8c5 init/main.c:738 x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:470 x86_64_start_kernel+0x77/0x7b arch/x86/kernel/head64.c:451 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243 INITIAL USE at: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline] _raw_spin_lock_irq+0x60/0x80 kernel/locking/spinlock.c:160 spin_lock_irq include/linux/spinlock.h:354 [inline] free_ioctx_users+0x2d/0x490 fs/aio.c:614 percpu_ref_put_many include/linux/percpu-refcount.h:284 [inline] percpu_ref_put include/linux/percpu-refcount.h:300 [inline] percpu_ref_call_confirm_rcu lib/percpu-refcount.c:123 [inline] percpu_ref_switch_to_atomic_rcu+0x407/0x540 lib/percpu-refcount.c:158 __rcu_reclaim kernel/rcu/rcu.h:236 [inline] rcu_do_batch kernel/rcu/tree.c:2584 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2897 [inline] __rcu_process_callbacks kernel/rcu/tree.c:2864 [inline] rcu_process_callbacks+0xba0/0x1a30 kernel/rcu/tree.c:2881 __do_softirq+0x25c/0x921 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1056 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:869 native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60 arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:556 default_idle_call+0x36/0x90 kernel/sched/idle.c:93 cpuidle_idle_call kernel/sched/idle.c:153 [inline] do_idle+0x377/0x560 kernel/sched/idle.c:262 cpu_startup_entry+0xc8/0xe0 kernel/sched/idle.c:368 rest_init+0xf1/0xf6 init/main.c:442 start_kernel+0x88c/0x8c5 init/main.c:738 x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:470 x86_64_start_kernel+0x77/0x7b arch/x86/kernel/head64.c:451 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243 } ... key at: [] __key.50192+0x0/0x40 ... acquired at: __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] aio_poll fs/aio.c:1741 [inline] __io_submit_one fs/aio.c:1849 [inline] io_submit_one+0xef2/0x2eb0 fs/aio.c:1885 __do_sys_io_submit fs/aio.c:1929 [inline] __se_sys_io_submit fs/aio.c:1900 [inline] __x64_sys_io_submit+0x1aa/0x520 fs/aio.c:1900 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> (&ctx->fd_wqh){....} ops: 45 { INITIAL USE at: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x95/0xcd kernel/locking/spinlock.c:152 __wake_up_common_lock+0xc7/0x190 kernel/sched/wait.c:120 __wake_up+0xe/0x10 kernel/sched/wait.c:145 userfaultfd_release+0x534/0x720 fs/userfaultfd.c:930 __fput+0x2dd/0x8b0 fs/file_table.c:278 ____fput+0x16/0x20 fs/file_table.c:309 task_work_run+0x145/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x273/0x2c0 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x53d/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe } ... key at: [] __key.43729+0x0/0x40 ... acquired at: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] userfaultfd_ctx_read fs/userfaultfd.c:1046 [inline] userfaultfd_read+0x394/0x18c0 fs/userfaultfd.c:1204 __vfs_read+0x114/0x800 fs/read_write.c:416 vfs_read+0x194/0x3d0 fs/read_write.c:452 ksys_read+0x14f/0x2d0 fs/read_write.c:579 __do_sys_read fs/read_write.c:589 [inline] __se_sys_read fs/read_write.c:587 [inline] __x64_sys_read+0x73/0xb0 fs/read_write.c:587 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe the dependencies between the lock to be acquired and SOFTIRQ-irq-unsafe lock: -> (&ctx->fault_pending_wqh){+.+.} ops: 47 { HARDIRQ-ON-W at: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] userfaultfd_release+0x4d6/0x720 fs/userfaultfd.c:922 __fput+0x2dd/0x8b0 fs/file_table.c:278 ____fput+0x16/0x20 fs/file_table.c:309 task_work_run+0x145/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x273/0x2c0 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x53d/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe SOFTIRQ-ON-W at: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] userfaultfd_release+0x4d6/0x720 fs/userfaultfd.c:922 __fput+0x2dd/0x8b0 fs/file_table.c:278 ____fput+0x16/0x20 fs/file_table.c:309 task_work_run+0x145/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x273/0x2c0 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x53d/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe INITIAL USE at: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] userfaultfd_release+0x4d6/0x720 fs/userfaultfd.c:922 __fput+0x2dd/0x8b0 fs/file_table.c:278 ____fput+0x16/0x20 fs/file_table.c:309 task_work_run+0x145/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x273/0x2c0 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x53d/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe } ... key at: [] __key.43726+0x0/0x40 ... acquired at: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] userfaultfd_ctx_read fs/userfaultfd.c:1046 [inline] userfaultfd_read+0x394/0x18c0 fs/userfaultfd.c:1204 __vfs_read+0x114/0x800 fs/read_write.c:416 vfs_read+0x194/0x3d0 fs/read_write.c:452 kobject: 'loop2' (000000003656bc83): kobject_uevent_env ksys_read+0x14f/0x2d0 fs/read_write.c:579 __do_sys_read fs/read_write.c:589 [inline] __se_sys_read fs/read_write.c:587 [inline] __x64_sys_read+0x73/0xb0 fs/read_write.c:587 kobject: 'loop2' (000000003656bc83): fill_kobj_path: path = '/devices/virtual/block/loop2' do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe kobject: 'loop4' (00000000d6ecc389): kobject_uevent_env stack backtrace: CPU: 1 PID: 24741 Comm: syz-executor.3 Not tainted 4.19.51 #23 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: kobject: 'loop4' (00000000d6ecc389): fill_kobj_path: path = '/devices/virtual/block/loop4' __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 print_bad_irq_dependency kernel/locking/lockdep.c:1568 [inline] check_usage.cold+0x611/0x946 kernel/locking/lockdep.c:1600 check_irq_usage kernel/locking/lockdep.c:1656 [inline] check_prev_add_irq kernel/locking/lockdep_states.h:8 [inline] check_prev_add kernel/locking/lockdep.c:1866 [inline] check_prevs_add kernel/locking/lockdep.c:1974 [inline] validate_chain kernel/locking/lockdep.c:2415 [inline] __lock_acquire+0x1ee4/0x48f0 kernel/locking/lockdep.c:3411 lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] userfaultfd_ctx_read fs/userfaultfd.c:1046 [inline] userfaultfd_read+0x394/0x18c0 fs/userfaultfd.c:1204 __vfs_read+0x114/0x800 fs/read_write.c:416 vfs_read+0x194/0x3d0 fs/read_write.c:452 ksys_read+0x14f/0x2d0 fs/read_write.c:579 __do_sys_read fs/read_write.c:589 [inline] __se_sys_read fs/read_write.c:587 [inline] __x64_sys_read+0x73/0xb0 fs/read_write.c:587 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fa5321bfc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004592c9 RDX: 00000000000000d2 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa5321c06d4 R13: 00000000004c53aa R14: 00000000004db138 R15: 00000000ffffffff sel_write_load: 8 callbacks suppressed SELinux: failed to load policy kobject: 'loop1' (00000000c24511c1): kobject_uevent_env kobject: 'loop1' (00000000c24511c1): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (000000003656bc83): kobject_uevent_env kobject: 'loop2' (000000003656bc83): fill_kobj_path: path = '/devices/virtual/block/loop2' SELinux: failed to load policy kobject: 'loop4' (00000000d6ecc389): kobject_uevent_env SELinux: failed to load policy kobject: 'loop4' (00000000d6ecc389): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (000000004d098913): kobject_uevent_env kobject: 'loop3' (000000004d098913): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000e4cef74e): kobject_uevent_env kobject: 'loop0' (00000000e4cef74e): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000c24511c1): kobject_uevent_env kobject: 'loop1' (00000000c24511c1): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000d6ecc389): kobject_uevent_env kobject: 'loop4' (00000000d6ecc389): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000e4cef74e): kobject_uevent_env kobject: 'loop0' (00000000e4cef74e): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000c24511c1): kobject_uevent_env kobject: 'loop1' (00000000c24511c1): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (000000004d098913): kobject_uevent_env kobject: 'loop3' (000000004d098913): fill_kobj_path: path = '/devices/virtual/block/loop3' SELinux: failed to load policy SELinux: failed to load policy kobject: 'loop1' (00000000c24511c1): kobject_uevent_env kobject: 'loop1' (00000000c24511c1): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000d6ecc389): kobject_uevent_env SELinux: failed to load policy kobject: 'loop4' (00000000d6ecc389): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (000000003656bc83): kobject_uevent_env SELinux: failed to load policy kobject: 'loop2' (000000003656bc83): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (00000000e4cef74e): kobject_uevent_env kobject: 'loop0' (00000000e4cef74e): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (000000004d098913): kobject_uevent_env kobject: 'loop3' (000000004d098913): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (00000000c24511c1): kobject_uevent_env kobject: 'loop1' (00000000c24511c1): fill_kobj_path: path = '/devices/virtual/block/loop1' SELinux: failed to load policy kobject: 'loop2' (000000003656bc83): kobject_uevent_env kobject: 'loop2' (000000003656bc83): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (00000000e4cef74e): kobject_uevent_env kobject: 'loop0' (00000000e4cef74e): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000c24511c1): kobject_uevent_env kobject: 'loop1' (00000000c24511c1): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000d6ecc389): kobject_uevent_env kobject: 'loop4' (00000000d6ecc389): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (000000004d098913): kobject_uevent_env kobject: 'loop3' (000000004d098913): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (000000003656bc83): kobject_uevent_env kobject: 'loop2' (000000003656bc83): fill_kobj_path: path = '/devices/virtual/block/loop2' SELinux: failed to load policy kobject: 'loop4' (00000000d6ecc389): kobject_uevent_env kobject: 'loop4' (00000000d6ecc389): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000e4cef74e): kobject_uevent_env kobject: 'loop0' (00000000e4cef74e): fill_kobj_path: path = '/devices/virtual/block/loop0' SELinux: failed to load policy kobject: 'loop2' (000000003656bc83): kobject_uevent_env kobject: 'loop2' (000000003656bc83): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (00000000c24511c1): kobject_uevent_env kobject: 'loop1' (00000000c24511c1): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000d6ecc389): kobject_uevent_env kobject: 'loop4' (00000000d6ecc389): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000e4cef74e): kobject_uevent_env kobject: 'loop0' (00000000e4cef74e): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000c24511c1): kobject_uevent_env kobject: 'loop1' (00000000c24511c1): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000d6ecc389): kobject_uevent_env kobject: 'loop4' (00000000d6ecc389): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000e4cef74e): kobject_uevent_env kobject: 'loop0' (00000000e4cef74e): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (000000003656bc83): kobject_uevent_env kobject: 'loop2' (000000003656bc83): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (000000004d098913): kobject_uevent_env kobject: 'loop3' (000000004d098913): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000e4cef74e): kobject_uevent_env kobject: 'loop0' (00000000e4cef74e): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000c24511c1): kobject_uevent_env kobject: 'loop1' (00000000c24511c1): fill_kobj_path: path = '/devices/virtual/block/loop1' IPVS: set_ctl: invalid protocol: 59 172.20.20.187:20003 kobject: 'loop4' (00000000d6ecc389): kobject_uevent_env IPVS: set_ctl: invalid protocol: 59 172.20.20.187:20003 kobject: 'loop4' (00000000d6ecc389): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (000000003656bc83): kobject_uevent_env kobject: 'loop2' (000000003656bc83): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (00000000e4cef74e): kobject_uevent_env kobject: 'loop0' (00000000e4cef74e): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (000000003656bc83): kobject_uevent_env kobject: 'loop2' (000000003656bc83): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (00000000c24511c1): kobject_uevent_env kobject: 'loop1' (00000000c24511c1): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000d6ecc389): kobject_uevent_env kobject: 'loop4' (00000000d6ecc389): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (000000004d098913): kobject_uevent_env kobject: 'loop3' (000000004d098913): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (00000000c24511c1): kobject_uevent_env kobject: 'loop1' (00000000c24511c1): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000d6ecc389): kobject_uevent_env kobject: 'loop4' (00000000d6ecc389): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (000000003656bc83): kobject_uevent_env kobject: 'loop2' (000000003656bc83): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (00000000e4cef74e): kobject_uevent_env kobject: 'loop0' (00000000e4cef74e): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000c24511c1): kobject_uevent_env kobject: 'loop1' (00000000c24511c1): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (000000003656bc83): kobject_uevent_env kobject: 'loop2' (000000003656bc83): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (00000000e4cef74e): kobject_uevent_env kobject: 'loop0' (00000000e4cef74e): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000c24511c1): kobject_uevent_env kobject: 'loop1' (00000000c24511c1): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (000000004d098913): kobject_uevent_env kobject: 'loop3' (000000004d098913): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000e4cef74e): kobject_uevent_env kobject: 'loop0' (00000000e4cef74e): fill_kobj_path: path = '/devices/virtual/block/loop0' syz-executor.0: vmalloc: allocation failure: 0 bytes, mode:0x6000c0(GFP_KERNEL), nodemask=(null) kobject: 'loop2' (000000003656bc83): kobject_uevent_env kobject: 'loop2' (000000003656bc83): fill_kobj_path: path = '/devices/virtual/block/loop2' syz-executor.0 cpuset=syz0 mems_allowed=0-1 CPU: 0 PID: 24986 Comm: syz-executor.0 Not tainted 4.19.51 #23 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 warn_alloc.cold+0x7b/0x173 mm/page_alloc.c:3447 __vmalloc_node_range mm/vmalloc.c:1766 [inline] __vmalloc_node_range+0x484/0x790 mm/vmalloc.c:1732 __vmalloc_node mm/vmalloc.c:1795 [inline] __vmalloc_node_flags mm/vmalloc.c:1809 [inline] vmalloc+0x6b/0x90 mm/vmalloc.c:1831 sel_write_load+0x1de/0x470 security/selinux/selinuxfs.c:557 __vfs_write+0x114/0x810 fs/read_write.c:485 vfs_write+0x20c/0x560 fs/read_write.c:549 ksys_write+0x14f/0x2d0 fs/read_write.c:599 __do_sys_write fs/read_write.c:611 [inline] __se_sys_write fs/read_write.c:608 [inline] __x64_sys_write+0x73/0xb0 fs/read_write.c:608 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f93ca8afc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004592c9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f93ca8b06d4 R13: 00000000004c9279 R14: 00000000004e0280 R15: 00000000ffffffff Mem-Info: kobject: 'loop1' (00000000c24511c1): kobject_uevent_env active_anon:160959 inactive_anon:183 isolated_anon:0 active_file:13780 inactive_file:34401 isolated_file:0 unevictable:0 dirty:21 writeback:0 unstable:0 slab_reclaimable:14752 slab_unreclaimable:112410 mapped:59003 shmem:283 pagetables:2123 bounce:0 free:1059458 free_pcp:464 free_cma:0 kobject: 'loop1' (00000000c24511c1): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000d6ecc389): kobject_uevent_env kobject: 'loop4' (00000000d6ecc389): fill_kobj_path: path = '/devices/virtual/block/loop4' Node 0 active_anon:643908kB inactive_anon:732kB active_file:54984kB inactive_file:137604kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:236112kB dirty:80kB writeback:0kB shmem:1132kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 176128kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no kobject: 'loop3' (000000004d098913): kobject_uevent_env kobject: 'loop3' (000000004d098913): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop3' (000000004d098913): kobject_uevent_env Node 1 active_anon:0kB inactive_anon:0kB active_file:136kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:4kB writeback:0kB shmem:0kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no kobject: 'loop3' (000000004d098913): fill_kobj_path: path = '/devices/virtual/block/loop3' Node 0 DMA free:15908kB min:220kB low:272kB high:324kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB kobject: 'loop1' (00000000c24511c1): kobject_uevent_env lowmem_reserve[]: 0 2555 2557 2557 kobject: 'loop1' (00000000c24511c1): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000d6ecc389): kobject_uevent_env Node 0 kobject: 'loop4' (00000000d6ecc389): fill_kobj_path: path = '/devices/virtual/block/loop4' DMA32 free:438376kB min:36248kB low:45308kB high:54368kB active_anon:643852kB inactive_anon:728kB active_file:54984kB inactive_file:137628kB unevictable:0kB writepending:240kB present:3129332kB managed:2619960kB mlocked:0kB kernel_stack:9248kB pagetables:8720kB bounce:0kB free_pcp:1996kB local_pcp:988kB free_cma:0kB lowmem_reserve[]: 0 0 2 2 Node 0 Normal free:12kB min:32kB low:40kB high:48kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:786432kB managed:2428kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 Node 1 Normal free:3783376kB min:53608kB low:67008kB high:80408kB active_anon:0kB inactive_anon:0kB active_file:136kB inactive_file:0kB unevictable:0kB writepending:4kB present:3932160kB managed:3870184kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15908kB kobject: 'loop1' (00000000c24511c1): kobject_uevent_env Node 0 DMA32: 151*4kB (UME) 3*8kB (UM) 789*16kB (U) 977*32kB (UM) 735*64kB (UME) 58*128kB (UME) 20*256kB (UME) 9*512kB (UM) 5*1024kB (UME) 6*2048kB (UME) 76*4096kB (UM) = 437412kB kobject: 'loop1' (00000000c24511c1): fill_kobj_path: path = '/devices/virtual/block/loop1' Node 0 Normal: 1*4kB (U) 1*8kB (U) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 12kB Node 1 Normal: 58*4kB (UME) 197*8kB (UME) 268*16kB (UM) 62*32kB (UME) 17*64kB (UME) 10*128kB (UM) 6*256kB (U) 4*512kB (UME) 3*1024kB (UM) 1*2048kB (E) 919*4096kB (M) = 3783376kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB 48472 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 1965979 pages RAM 0 pages HighMem/MovableOnly 338859 pages reserved 0 pages cma reserved kobject: 'loop2' (000000003656bc83): kobject_uevent_env kobject: 'loop2' (000000003656bc83): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (00000000e4cef74e): kobject_uevent_env sel_write_load: 7 callbacks suppressed SELinux: failed to load policy syz-executor.0: vmalloc: allocation failure: 0 bytes, mode:0x6000c0(GFP_KERNEL), nodemask=(null) kobject: 'loop0' (00000000e4cef74e): fill_kobj_path: path = '/devices/virtual/block/loop0' syz-executor.0 cpuset=syz0 mems_allowed=0-1 kobject: 'loop4' (00000000d6ecc389): kobject_uevent_env CPU: 1 PID: 25038 Comm: syz-executor.0 Not tainted 4.19.51 #23 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 kobject: 'loop4' (00000000d6ecc389): fill_kobj_path: path = '/devices/virtual/block/loop4' Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 warn_alloc.cold+0x7b/0x173 mm/page_alloc.c:3447 __vmalloc_node_range mm/vmalloc.c:1766 [inline] __vmalloc_node_range+0x484/0x790 mm/vmalloc.c:1732 kobject: 'loop2' (000000003656bc83): kobject_uevent_env __vmalloc_node mm/vmalloc.c:1795 [inline] __vmalloc_node_flags mm/vmalloc.c:1809 [inline] vmalloc+0x6b/0x90 mm/vmalloc.c:1831 sel_write_load+0x1de/0x470 security/selinux/selinuxfs.c:557 __vfs_write+0x114/0x810 fs/read_write.c:485 vfs_write+0x20c/0x560 fs/read_write.c:549 ksys_write+0x14f/0x2d0 fs/read_write.c:599 __do_sys_write fs/read_write.c:611 [inline] __se_sys_write fs/read_write.c:608 [inline] __x64_sys_write+0x73/0xb0 fs/read_write.c:608 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 kobject: 'loop2' (000000003656bc83): fill_kobj_path: path = '/devices/virtual/block/loop2' RSP: 002b:00007f93ca8afc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004592c9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f93ca8b06d4 R13: 00000000004c9279 R14: 00000000004e0280 R15: 00000000ffffffff SELinux: failed to load policy kobject: 'loop1' (00000000c24511c1): kobject_uevent_env kobject: 'loop1' (00000000c24511c1): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000d6ecc389): kobject_uevent_env kobject: 'loop4' (00000000d6ecc389): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000e4cef74e): kobject_uevent_env kobject: 'loop0' (00000000e4cef74e): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (000000003656bc83): kobject_uevent_env kobject: 'loop2' (000000003656bc83): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (00000000c24511c1): kobject_uevent_env kobject: 'loop1' (00000000c24511c1): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (000000004d098913): kobject_uevent_env SELinux: failed to load policy kobject: 'loop3' (000000004d098913): fill_kobj_path: path = '/devices/virtual/block/loop3' syz-executor.0: vmalloc: allocation failure: 0 bytes, mode:0x6000c0(GFP_KERNEL), nodemask=(null) syz-executor.0 cpuset=syz0 mems_allowed=0-1 CPU: 1 PID: 25069 Comm: syz-executor.0 Not tainted 4.19.51 #23 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 warn_alloc.cold+0x7b/0x173 mm/page_alloc.c:3447 kobject: 'loop4' (00000000d6ecc389): kobject_uevent_env kobject: 'loop4' (00000000d6ecc389): fill_kobj_path: path = '/devices/virtual/block/loop4' __vmalloc_node_range mm/vmalloc.c:1766 [inline] __vmalloc_node_range+0x484/0x790 mm/vmalloc.c:1732 __vmalloc_node mm/vmalloc.c:1795 [inline] __vmalloc_node_flags mm/vmalloc.c:1809 [inline] vmalloc+0x6b/0x90 mm/vmalloc.c:1831 sel_write_load+0x1de/0x470 security/selinux/selinuxfs.c:557 __vfs_write+0x114/0x810 fs/read_write.c:485 kobject: 'loop4' (00000000d6ecc389): kobject_uevent_env kobject: 'loop4' (00000000d6ecc389): fill_kobj_path: path = '/devices/virtual/block/loop4' vfs_write+0x20c/0x560 fs/read_write.c:549 ksys_write+0x14f/0x2d0 fs/read_write.c:599 __do_sys_write fs/read_write.c:611 [inline] __se_sys_write fs/read_write.c:608 [inline] __x64_sys_write+0x73/0xb0 fs/read_write.c:608 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f93ca8afc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004592c9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f93ca8b06d4 R13: 00000000004c9279 R14: 00000000004e0280 R15: 00000000ffffffff warn_alloc_show_mem: 1 callbacks suppressed Mem-Info: active_anon:162007 inactive_anon:183 isolated_anon:0 active_file:13781 inactive_file:34415 isolated_file:0 unevictable:0 dirty:68 writeback:0 unstable:0 slab_reclaimable:14788 slab_unreclaimable:112318 mapped:59003 shmem:283 pagetables:2160 bounce:0 free:1058453 free_pcp:493 free_cma:0 kobject: 'loop2' (000000003656bc83): kobject_uevent_env Node 0 active_anon:648028kB inactive_anon:732kB active_file:54988kB inactive_file:137660kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:236012kB dirty:268kB writeback:0kB shmem:1132kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 176128kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no Node 1 active_anon:0kB inactive_anon:0kB active_file:136kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:4kB writeback:0kB shmem:0kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no kobject: 'loop2' (000000003656bc83): fill_kobj_path: path = '/devices/virtual/block/loop2' Node 0 DMA free:15908kB min:220kB low:272kB high:324kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB kobject: 'loop1' (00000000c24511c1): kobject_uevent_env lowmem_reserve[]: kobject: 'loop1' (00000000c24511c1): fill_kobj_path: path = '/devices/virtual/block/loop1' 0 kobject: 'loop4' (00000000d6ecc389): kobject_uevent_env kobject: 'loop4' (00000000d6ecc389): fill_kobj_path: path = '/devices/virtual/block/loop4' 2555 2557 2557 Node 0 DMA32 free:431784kB min:36248kB low:45308kB high:54368kB active_anon:650164kB inactive_anon:732kB active_file:54988kB inactive_file:137660kB unevictable:0kB writepending:268kB present:3129332kB managed:2619960kB mlocked:0kB kernel_stack:9376kB pagetables:8936kB bounce:0kB free_pcp:1536kB local_pcp:1032kB free_cma:0kB kobject: 'loop1' (00000000c24511c1): kobject_uevent_env lowmem_reserve[]: 0 0 2 2 kobject: 'loop1' (00000000c24511c1): fill_kobj_path: path = '/devices/virtual/block/loop1' Node 0 Normal free:12kB min:32kB low:40kB high:48kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:786432kB managed:2428kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB kobject: 'loop4' (00000000d6ecc389): kobject_uevent_env kobject: 'loop4' (00000000d6ecc389): fill_kobj_path: path = '/devices/virtual/block/loop4' lowmem_reserve[]: 0 0 0 0 Node 1 Normal free:3783376kB min:53608kB low:67008kB high:80408kB active_anon:0kB inactive_anon:0kB active_file:136kB inactive_file:0kB unevictable:0kB writepending:4kB present:3932160kB managed:3870184kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15908kB Node 0 DMA32: 92*4kB (UME) 4*8kB (M) 728*16kB (UM) 975*32kB (UM) 736*64kB (UME) 67*128kB (UME) 20*256kB (UME) 9*512kB (UM) 5*1024kB (UME) 5*2048kB (UME) 75*4096kB (UM) = 431216kB Node 0 Normal: 1*4kB (U) 1*8kB (U) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 12kB Node 1 Normal: 58*4kB (UME) 197*8kB (UME) 268*16kB (UM) 62*32kB (UME) 17*64kB (UME) 10*128kB (UM) 6*256kB (U) 4*512kB (UME) 3*1024kB (UM) 1*2048kB (E) 919*4096kB (M) = 3783376kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB 48484 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 1965979 pages RAM 0 pages HighMem/MovableOnly 338859 pages reserved 0 pages cma reserved SELinux: failed to load policy kobject: 'loop0' (00000000e4cef74e): kobject_uevent_env kobject: 'loop0' (00000000e4cef74e): fill_kobj_path: path = '/devices/virtual/block/loop0' syz-executor.0: vmalloc: allocation failure: 0 bytes, mode:0x6000c0(GFP_KERNEL), nodemask=(null) kobject: 'loop2' (000000003656bc83): kobject_uevent_env kobject: 'loop2' (000000003656bc83): fill_kobj_path: path = '/devices/virtual/block/loop2' syz-executor.0 cpuset=syz0 mems_allowed=0-1 CPU: 1 PID: 25110 Comm: syz-executor.0 Not tainted 4.19.51 #23 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 warn_alloc.cold+0x7b/0x173 mm/page_alloc.c:3447 kobject: 'loop3' (000000004d098913): kobject_uevent_env kobject: 'loop3' (000000004d098913): fill_kobj_path: path = '/devices/virtual/block/loop3' __vmalloc_node_range mm/vmalloc.c:1766 [inline] __vmalloc_node_range+0x484/0x790 mm/vmalloc.c:1732 __vmalloc_node mm/vmalloc.c:1795 [inline] __vmalloc_node_flags mm/vmalloc.c:1809 [inline] vmalloc+0x6b/0x90 mm/vmalloc.c:1831 sel_write_load+0x1de/0x470 security/selinux/selinuxfs.c:557 __vfs_write+0x114/0x810 fs/read_write.c:485 kobject: 'loop4' (00000000d6ecc389): kobject_uevent_env vfs_write+0x20c/0x560 fs/read_write.c:549 ksys_write+0x14f/0x2d0 fs/read_write.c:599 kobject: 'loop4' (00000000d6ecc389): fill_kobj_path: path = '/devices/virtual/block/loop4' __do_sys_write fs/read_write.c:611 [inline] __se_sys_write fs/read_write.c:608 [inline] __x64_sys_write+0x73/0xb0 fs/read_write.c:608 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f93ca8afc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004592c9 RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f93ca8b06d4 R13: 00000000004c9279 R14: 00000000004e0280 R15: 00000000ffffffff SELinux: failed to load policy kobject: 'loop1' (00000000c24511c1): kobject_uevent_env kobject: 'loop1' (00000000c24511c1): fill_kobj_path: path = '/devices/virtual/block/loop1' syz-executor.0: vmalloc: allocation failure: 0 bytes, mode:0x6000c0(GFP_KERNEL), nodemask=(null) kobject: 'loop4' (00000000d6ecc389): kobject_uevent_env kobject: 'loop4' (00000000d6ecc389): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000c24511c1): kobject_uevent_env kobject: 'loop1' (00000000c24511c1): fill_kobj_path: path = '/devices/virtual/block/loop1' syz-executor.0 cpuset= kobject: 'loop0' (00000000e4cef74e): kobject_uevent_env syz0 kobject: 'loop0' (00000000e4cef74e): fill_kobj_path: path = '/devices/virtual/block/loop0' mems_allowed=0-1 CPU: 0 PID: 25136 Comm: syz-executor.0 Not tainted 4.19.51 #23 kobject: 'loop2' (000000003656bc83): kobject_uevent_env Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 warn_alloc.cold+0x7b/0x173 mm/page_alloc.c:3447 kobject: 'loop2' (000000003656bc83): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (00000000c24511c1): kobject_uevent_env __vmalloc_node_range mm/vmalloc.c:1766 [inline] __vmalloc_node_range+0x484/0x790 mm/vmalloc.c:1732 kobject: 'loop1' (00000000c24511c1): fill_kobj_path: path = '/devices/virtual/block/loop1' __vmalloc_node mm/vmalloc.c:1795 [inline] __vmalloc_node_flags mm/vmalloc.c:1809 [inline] vmalloc+0x6b/0x90 mm/vmalloc.c:1831 sel_write_load+0x1de/0x470 security/selinux/selinuxfs.c:557 __vfs_write+0x114/0x810 fs/read_write.c:485 vfs_write+0x20c/0x560 fs/read_write.c:549 ksys_write+0x14f/0x2d0 fs/read_write.c:599 __do_sys_write fs/read_write.c:611 [inline] __se_sys_write fs/read_write.c:608 [inline] __x64_sys_write+0x73/0xb0 fs/read_write.c:608 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f93ca8afc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004592c9 RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f93ca8b06d4 R13: 00000000004c9279 R14: 00000000004e0280 R15: 00000000ffffffff warn_alloc_show_mem: 1 callbacks suppressed Mem-Info: kobject: 'loop4' (00000000d6ecc389): kobject_uevent_env kobject: 'loop4' (00000000d6ecc389): fill_kobj_path: path = '/devices/virtual/block/loop4' active_anon:163092 inactive_anon:183 isolated_anon:0 active_file:13781 inactive_file:34421 isolated_file:0 unevictable:0 dirty:68 writeback:0 unstable:0 slab_reclaimable:14828 slab_unreclaimable:113088 mapped:59003 shmem:283 pagetables:2212 bounce:0 free:1056462 free_pcp:497 free_cma:0 kobject: 'loop1' (00000000c24511c1): kobject_uevent_env kobject: 'loop1' (00000000c24511c1): fill_kobj_path: path = '/devices/virtual/block/loop1' Node 0 active_anon:650228kB inactive_anon:728kB active_file:54988kB inactive_file:137724kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:236112kB dirty:276kB writeback:0kB shmem:1132kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 184320kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no kobject: 'loop4' (00000000d6ecc389): kobject_uevent_env Node 1 active_anon:0kB inactive_anon:0kB active_file:136kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:4kB writeback:0kB shmem:0kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no kobject: 'loop4' (00000000d6ecc389): fill_kobj_path: path = '/devices/virtual/block/loop4' Node 0 DMA free:15908kB min:220kB low:272kB high:324kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB kobject: 'loop1' (00000000c24511c1): kobject_uevent_env kobject: 'loop1' (00000000c24511c1): fill_kobj_path: path = '/devices/virtual/block/loop1' lowmem_reserve[]: 0 2555 2557 2557 Node 0 DMA32 free:429568kB min:36248kB low:45308kB high:54368kB active_anon:650064kB inactive_anon:728kB active_file:54988kB inactive_file:137724kB unevictable:0kB writepending:276kB present:3129332kB managed:2619960kB mlocked:0kB kernel_stack:9344kB pagetables:8884kB bounce:0kB free_pcp:1900kB local_pcp:1372kB free_cma:0kB kobject: 'loop4' (00000000d6ecc389): kobject_uevent_env lowmem_reserve[]: 0 0 2 2 Node 0 Normal free:12kB min:32kB low:40kB high:48kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:786432kB managed:2428kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB kobject: 'loop4' (00000000d6ecc389): fill_kobj_path: path = '/devices/virtual/block/loop4' lowmem_reserve[]: 0 0 0 0 Node 1 Normal free:3783376kB min:53608kB low:67008kB high:80408kB active_anon:0kB inactive_anon:0kB active_file:136kB inactive_file:0kB unevictable:0kB writepending:4kB present:3932160kB managed:3870184kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15908kB Node 0 DMA32: 137*4kB (UM) 150*8kB (UM) 367*16kB (UME) 983*32kB (UM) 738*64kB (UME) 95*128kB (UME) 19*256kB (UM) 9*512kB (UM) 5*1024kB (UME) 6*2048kB (UME) 76*4096kB (UM) = 436644kB Node 0 Normal: 1*4kB (U) 1*8kB (U) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 12kB kobject: 'loop3' (000000004d098913): kobject_uevent_env Node 1 Normal: 58*4kB (UME) 197*8kB (UME) 268*16kB (UM) 62*32kB (UME) 17*64kB (UME) 10*128kB (UM) 6*256kB (U) 4*512kB (UME) 3*1024kB (UM) 1*2048kB (E) 919*4096kB (M) = 3783376kB kobject: 'loop3' (000000004d098913): fill_kobj_path: path = '/devices/virtual/block/loop3' Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB 48494 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 1965979 pages RAM 0 pages HighMem/MovableOnly 338859 pages reserved 0 pages cma reserved SELinux: failed to load policy kobject: 'loop0' (00000000e4cef74e): kobject_uevent_env kobject: 'loop0' (00000000e4cef74e): fill_kobj_path: path = '/devices/virtual/block/loop0' SELinux: failed to load policy syz-executor.0: vmalloc: allocation failure: 0 bytes, mode:0x6000c0(GFP_KERNEL), nodemask=(null) kobject: 'loop4' (00000000d6ecc389): kobject_uevent_env kobject: 'loop4' (00000000d6ecc389): fill_kobj_path: path = '/devices/virtual/block/loop4' syz-executor.0 cpuset=syz0 mems_allowed=0-1 kobject: 'loop2' (000000003656bc83): kobject_uevent_env CPU: 1 PID: 25193 Comm: syz-executor.0 Not tainted 4.19.51 #23 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 kobject: 'loop2' (000000003656bc83): fill_kobj_path: path = '/devices/virtual/block/loop2' Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 warn_alloc.cold+0x7b/0x173 mm/page_alloc.c:3447 kobject: 'loop1' (00000000c24511c1): kobject_uevent_env __vmalloc_node_range mm/vmalloc.c:1766 [inline] __vmalloc_node_range+0x484/0x790 mm/vmalloc.c:1732 __vmalloc_node mm/vmalloc.c:1795 [inline] __vmalloc_node_flags mm/vmalloc.c:1809 [inline] vmalloc+0x6b/0x90 mm/vmalloc.c:1831 sel_write_load+0x1de/0x470 security/selinux/selinuxfs.c:557 __vfs_write+0x114/0x810 fs/read_write.c:485 kobject: 'loop1' (00000000c24511c1): fill_kobj_path: path = '/devices/virtual/block/loop1' vfs_write+0x20c/0x560 fs/read_write.c:549 ksys_write+0x14f/0x2d0 fs/read_write.c:599 __do_sys_write fs/read_write.c:611 [inline] __se_sys_write fs/read_write.c:608 [inline] __x64_sys_write+0x73/0xb0 fs/read_write.c:608 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe kobject: 'loop2' (000000003656bc83): kobject_uevent_env RIP: 0033:0x4592c9 Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f93ca8afc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004592c9 RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f93ca8b06d4 R13: 00000000004c9279 R14: 00000000004e0280 R15: 00000000ffffffff SELinux: failed to load policy kobject: 'loop2' (000000003656bc83): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (00000000c24511c1): kobject_uevent_env kobject: 'loop1' (00000000c24511c1): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (00000000e4cef74e): kobject_uevent_env kobject: 'loop0' (00000000e4cef74e): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000d6ecc389): kobject_uevent_env kobject: 'loop4' (00000000d6ecc389): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (000000003656bc83): kobject_uevent_env kobject: 'loop2' (000000003656bc83): fill_kobj_path: path = '/devices/virtual/block/loop2'