possible deadlock in static_key_slow

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-4.19	possible deadlock in static_key_slow_dec (3)				3	886d	934d	0/1	auto-closed as invalid on 2022/03/22 05:24
upstream	possible deadlock in static_key_slow_dec cgroups	C	done	error	35	591d	1997d	0/26	auto-obsoleted due to no activity on 2023/01/11 02:59
linux-4.19	possible deadlock in static_key_slow_dec (2)				2	1203d	1287d	0/1	auto-closed as invalid on 2021/05/08 21:09

R13: 00000000004c783b R14: 00000000004dd0f0 R15: 00000000ffffffff Task in /syz5 killed as a result of limit of /syz5 memory: usage 307168kB, limit 307200kB, failcnt 3345 ====================================================== memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0 WARNING: possible circular locking dependency detected 4.19.69 #43 Not tainted ------------------------------------------------------ kmem: usage 0kB, limit 9007199254740988kB, failcnt 0 syz-executor.4/6974 is trying to acquire lock: 00000000fff4f724 (cpu_hotplug_lock.rw_sem){++++} Memory cgroup stats for , at: __static_key_slow_dec kernel/jump_label.c:212 [inline] , at: static_key_slow_dec+0x54/0xa0 kernel/jump_label.c:227 but task is already holding lock: 0000000084b525b7 ( /syz5 &mm->mmap_sem){++++}, at: vm_mmap_pgoff+0x173/0x230 mm/util.c:355 : which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 cache:112KB (&mm->mmap_sem){++++}: __might_fault mm/memory.c:4638 [inline] __might_fault+0x15e/0x1e0 mm/memory.c:4623 _copy_from_user+0x30/0x150 lib/usercopy.c:10 copy_from_user include/linux/uaccess.h:147 [inline] perf_event_query_prog_array+0x106/0x320 kernel/trace/bpf_trace.c:1113 _perf_ioctl+0x403/0x12b0 kernel/events/core.c:5112 perf_ioctl+0x5c/0x90 kernel/events/core.c:5143 rss:242332KB vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xd5f/0x1380 fs/ioctl.c:688 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705 rss_huge:210944KB __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #2 (&cpuctx_mutex){+.+.}: __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0xf7/0x1300 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 shmem:0KB perf_event_init_cpu+0xcf/0x180 kernel/events/core.c:11745 perf_event_init+0x317/0x363 kernel/events/core.c:11792 start_kernel+0x505/0x8c5 init/main.c:646 mapped_file:0KB x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:472 x86_64_start_kernel+0x77/0x7b arch/x86/kernel/head64.c:453 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243 -> #1 (pmus_lock){+.+.}: __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0xf7/0x1300 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 perf_event_init_cpu+0x2f/0x180 kernel/events/core.c:11739 dirty:0KB cpuhp_invoke_callback+0x201/0x1af0 kernel/cpu.c:168 cpuhp_up_callbacks kernel/cpu.c:567 [inline] _cpu_up+0x270/0x540 kernel/cpu.c:1118 do_cpu_up+0x16b/0x190 kernel/cpu.c:1153 cpu_up+0x1b/0x20 kernel/cpu.c:1161 smp_init+0x1a8/0x1c1 kernel/smp.c:578 kernel_init_freeable+0x339/0x5c8 init/main.c:1138 kernel_init+0x12/0x1c5 init/main.c:1062 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 -> #0 (cpu_hotplug_lock.rw_sem){++++}: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:36 [inline] percpu_down_read include/linux/percpu-rwsem.h:59 [inline] cpus_read_lock+0x3e/0xe0 kernel/cpu.c:288 __static_key_slow_dec kernel/jump_label.c:212 [inline] static_key_slow_dec+0x54/0xa0 kernel/jump_label.c:227 sw_perf_event_destroy+0x8b/0x130 kernel/events/core.c:8238 _free_event+0x354/0x1220 kernel/events/core.c:4453 put_event+0x47/0x60 kernel/events/core.c:4547 perf_mmap_close+0x789/0xe40 kernel/events/core.c:5547 remove_vma+0xb2/0x180 mm/mmap.c:182 remove_vma_list mm/mmap.c:2554 [inline] do_munmap+0x723/0xed0 mm/mmap.c:2790 mmap_region+0x224/0x1760 mm/mmap.c:1706 do_mmap+0x8e2/0x1080 mm/mmap.c:1536 do_mmap_pgoff include/linux/mm.h:2319 [inline] vm_mmap_pgoff+0x1c5/0x230 mm/util.c:357 ksys_mmap_pgoff+0x4aa/0x630 mm/mmap.c:1586 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline] __x64_sys_mmap+0xe9/0x1b0 arch/x86/kernel/sys_x86_64.c:91 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Chain exists of: cpu_hotplug_lock.rw_sem --> &cpuctx_mutex --> &mm->mmap_sem Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&mm->mmap_sem); lock(&cpuctx_mutex); lock(&mm->mmap_sem); lock(cpu_hotplug_lock.rw_sem); *** DEADLOCK *** 1 lock held by syz-executor.4/6974: #0: 0000000084b525b7 (&mm->mmap_sem){++++}, at: vm_mmap_pgoff+0x173/0x230 mm/util.c:355 stack backtrace: CPU: 1 PID: 6974 Comm: syz-executor.4 Not tainted 4.19.69 #43 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 print_circular_bug.isra.0.cold+0x1cc/0x28f kernel/locking/lockdep.c:1221 check_prev_add kernel/locking/lockdep.c:1861 [inline] check_prevs_add kernel/locking/lockdep.c:1974 [inline] validate_chain kernel/locking/lockdep.c:2415 [inline] __lock_acquire+0x2e19/0x49c0 kernel/locking/lockdep.c:3411 lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:36 [inline] percpu_down_read include/linux/percpu-rwsem.h:59 [inline] cpus_read_lock+0x3e/0xe0 kernel/cpu.c:288 __static_key_slow_dec kernel/jump_label.c:212 [inline] static_key_slow_dec+0x54/0xa0 kernel/jump_label.c:227 sw_perf_event_destroy+0x8b/0x130 kernel/events/core.c:8238 _free_event+0x354/0x1220 kernel/events/core.c:4453 put_event+0x47/0x60 kernel/events/core.c:4547 perf_mmap_close+0x789/0xe40 kernel/events/core.c:5547 remove_vma+0xb2/0x180 mm/mmap.c:182 remove_vma_list mm/mmap.c:2554 [inline] do_munmap+0x723/0xed0 mm/mmap.c:2790 mmap_region+0x224/0x1760 mm/mmap.c:1706 do_mmap+0x8e2/0x1080 mm/mmap.c:1536 do_mmap_pgoff include/linux/mm.h:2319 [inline] vm_mmap_pgoff+0x1c5/0x230 mm/util.c:357 ksys_mmap_pgoff+0x4aa/0x630 mm/mmap.c:1586 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline] __x64_sys_mmap+0xe9/0x1b0 arch/x86/kernel/sys_x86_64.c:91 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459879 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:00007f138ecf6c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000459879 RDX: 0000000000000000 RSI: 0000000000003000 RDI: 0000000020ffd000 RBP: 000000000075c070 R08: 0000000000000004 R09: 0000000000000000 R10: 0000000000000011 R11: 0000000000000246 R12: 00007f138ecf76d4 R13: 00000000004c5d7b R14: 00000000004da810 R15: 00000000ffffffff writeback:0KB swap:0KB inactive_anon:0KB active_anon:242288KB inactive_file:0KB active_file:4KB unevictable:0KB Memory cgroup out of memory: Kill process 23560 (syz-executor.5) score 1110 or sacrifice child Killed process 23560 (syz-executor.5) total-vm:72580kB, anon-rss:2196kB, file-rss:34816kB, shmem-rss:0kB kobject: 'loop4' (000000009228f136): kobject_uevent_env kobject: 'loop4' (000000009228f136): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (0000000085d872b6): kobject_uevent_env kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path = '/devices/virtual/block/loop5' syz-executor.3 invoked oom-killer: gfp_mask=0x7080c0(GFP_KERNEL_ACCOUNT|__GFP_ZERO), nodemask=(null), order=0, oom_score_adj=1000 kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env syz-executor.3 cpuset=syz3 mems_allowed=0-1 kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path = '/devices/virtual/block/loop2' CPU: 1 PID: 6987 Comm: syz-executor.3 Not tainted 4.19.69 #43 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 dump_header+0x15e/0xa55 mm/oom_kill.c:441 oom_kill_process.cold+0x10/0x6ef mm/oom_kill.c:954 out_of_memory mm/oom_kill.c:1129 [inline] out_of_memory+0x936/0x12d0 mm/oom_kill.c:1062 mem_cgroup_out_of_memory+0x1d2/0x240 mm/memcontrol.c:1416 mem_cgroup_oom mm/memcontrol.c:1742 [inline] try_charge+0xef7/0x1480 mm/memcontrol.c:2304 memcg_kmem_charge_memcg+0x7c/0x130 mm/memcontrol.c:2634 memcg_kmem_charge+0x136/0x370 mm/memcontrol.c:2667 __alloc_pages_nodemask+0x3c3/0x750 mm/page_alloc.c:4413 kobject: 'loop5' (0000000085d872b6): kobject_uevent_env kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path = '/devices/virtual/block/loop5' alloc_pages_current+0x107/0x210 mm/mempolicy.c:2193 alloc_pages include/linux/gfp.h:509 [inline] pmd_alloc_one arch/x86/include/asm/pgalloc.h:102 [inline] __pmd_alloc+0x41/0x460 mm/memory.c:4283 pmd_alloc+0x10c/0x180 include/linux/mm.h:1840 copy_pmd_range mm/memory.c:1133 [inline] copy_pud_range mm/memory.c:1187 [inline] copy_p4d_range mm/memory.c:1209 [inline] copy_page_range+0x633/0x1f90 mm/memory.c:1271 dup_mmap kernel/fork.c:544 [inline] dup_mm kernel/fork.c:1283 [inline] copy_mm kernel/fork.c:1339 [inline] copy_process.part.0+0x543d/0x7a30 kernel/fork.c:1892 copy_process kernel/fork.c:1689 [inline] _do_fork+0x257/0xfd0 kernel/fork.c:2202 __do_sys_clone kernel/fork.c:2309 [inline] __se_sys_clone kernel/fork.c:2303 [inline] __x64_sys_clone+0xbf/0x150 kernel/fork.c:2303 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459879 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:00007fe4ffe60c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000459879 RDX: 9999999999999999 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 000000000075bf20 R08: ffffffffffffffff R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe4ffe616d4 R13: 00000000004bfd46 R14: 00000000004d1af8 R15: 00000000ffffffff FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 7004 Comm: syz-executor.5 Not tainted 4.19.69 #43 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 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 __should_failslab+0x121/0x190 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc+0x2e2/0x750 mm/slab.c:3736 kmalloc include/linux/slab.h:520 [inline] sock_kmalloc net/core/sock.c:1981 [inline] sock_kmalloc+0xc6/0x120 net/core/sock.c:1972 ___sys_sendmsg+0x5bd/0x920 net/socket.c:2082 __sys_sendmsg+0x105/0x1d0 net/socket.c:2153 __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459879 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:00007fe248f09c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fe248f09c90 RCX: 0000000000459879 RDX: 0000000000000000 RSI: 0000000020001600 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe248f0a6d4 R13: 00000000004c77e9 R14: 00000000004dd048 R15: 0000000000000004 Task in /syz3 killed as a result of limit of /syz3 kobject: 'loop5' (0000000085d872b6): kobject_uevent_env memory: usage 307200kB, limit 307200kB, failcnt 1059 memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0 kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path = '/devices/virtual/block/loop5' kmem: usage 0kB, limit 9007199254740988kB, failcnt 0 Memory cgroup stats for /syz3: cache:36KB rss:249924KB rss_huge:223232KB shmem:0KB mapped_file:0KB dirty:0KB writeback:0KB swap:0KB inactive_anon:0KB active_anon:249892KB inactive_file:0KB active_file:4KB unevictable:0KB kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path = '/devices/virtual/block/loop2' atomic_op 0000000046869e6f conn xmit_atomic (null) Memory cgroup out of memory: Kill process 5572 (syz-executor.3) score 1113 or sacrifice child Killed process 5572 (syz-executor.3) total-vm:72712kB, anon-rss:2204kB, file-rss:35792kB, shmem-rss:0kB kobject: 'loop5' (0000000085d872b6): kobject_uevent_env kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (000000009228f136): kobject_uevent_env kobject: 'loop4' (000000009228f136): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (00000000064a2131): kobject_uevent_env kobject: 'loop3' (00000000064a2131): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (0000000085d872b6): kobject_uevent_env kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path = '/devices/virtual/block/loop2' syz-executor.3 invoked oom-killer: gfp_mask=0x7080c0(GFP_KERNEL_ACCOUNT|__GFP_ZERO), nodemask=(null), order=0, oom_score_adj=1000 syz-executor.3 cpuset=syz3 mems_allowed=0-1 CPU: 0 PID: 7045 Comm: syz-executor.3 Not tainted 4.19.69 #43 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 dump_header+0x15e/0xa55 mm/oom_kill.c:441 oom_kill_process.cold+0x10/0x6ef mm/oom_kill.c:954 out_of_memory mm/oom_kill.c:1129 [inline] out_of_memory+0x936/0x12d0 mm/oom_kill.c:1062 mem_cgroup_out_of_memory+0x1d2/0x240 mm/memcontrol.c:1416 mem_cgroup_oom mm/memcontrol.c:1742 [inline] try_charge+0xef7/0x1480 mm/memcontrol.c:2304 memcg_kmem_charge_memcg+0x7c/0x130 mm/memcontrol.c:2634 memcg_kmem_charge+0x136/0x370 mm/memcontrol.c:2667 __alloc_pages_nodemask+0x3c3/0x750 mm/page_alloc.c:4413 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2193 alloc_pages include/linux/gfp.h:509 [inline] pte_alloc_one+0x1b/0x1a0 arch/x86/mm/pgtable.c:35 __pte_alloc+0x2a/0x360 mm/memory.c:653 copy_pte_range mm/memory.c:1077 [inline] copy_pmd_range mm/memory.c:1153 [inline] copy_pud_range mm/memory.c:1187 [inline] copy_p4d_range mm/memory.c:1209 [inline] copy_page_range+0x151f/0x1f90 mm/memory.c:1271 dup_mmap kernel/fork.c:544 [inline] dup_mm kernel/fork.c:1283 [inline] copy_mm kernel/fork.c:1339 [inline] copy_process.part.0+0x543d/0x7a30 kernel/fork.c:1892 copy_process kernel/fork.c:1689 [inline] _do_fork+0x257/0xfd0 kernel/fork.c:2202 __do_sys_clone kernel/fork.c:2309 [inline] __se_sys_clone kernel/fork.c:2303 [inline] __x64_sys_clone+0xbf/0x150 kernel/fork.c:2303 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459879 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:00007fe4ffe60c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000459879 RDX: 9999999999999999 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 000000000075bf20 R08: ffffffffffffffff R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe4ffe616d4 R13: 00000000004bfd46 R14: 00000000004d1af8 R15: 00000000ffffffff Task in /syz3 killed as a result of limit of /syz3 memory: usage 307200kB, limit 307200kB, failcnt 1107 memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0 kmem: usage 0kB, limit 9007199254740988kB, failcnt 0 kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env Memory cgroup stats for /syz3: cache:36KB rss:249884KB rss_huge:223232KB shmem:0KB mapped_file:0KB dirty:0KB writeback:0KB swap:0KB inactive_anon:0KB active_anon:249884KB inactive_file:0KB active_file:0KB unevictable:0KB kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path = '/devices/virtual/block/loop2' Memory cgroup out of memory: Kill process 12632 (syz-executor.3) score 1113 or sacrifice child Killed process 12632 (syz-executor.3) total-vm:72844kB, anon-rss:2208kB, file-rss:35784kB, shmem-rss:0kB kobject: 'loop5' (0000000085d872b6): kobject_uevent_env kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (000000009228f136): kobject_uevent_env kobject: 'loop4' (000000009228f136): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (00000000064a2131): kobject_uevent_env kobject: 'loop3' (00000000064a2131): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path = '/devices/virtual/block/loop2' syz-executor.3 invoked oom-killer: gfp_mask=0x6000c0(GFP_KERNEL), nodemask=(null), order=0, oom_score_adj=1000 kobject: 'loop5' (0000000085d872b6): kobject_uevent_env syz-executor.3 cpuset=syz3 mems_allowed=0-1 kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path = '/devices/virtual/block/loop5' CPU: 0 PID: 7106 Comm: syz-executor.3 Not tainted 4.19.69 #43 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 dump_header+0x15e/0xa55 mm/oom_kill.c:441 oom_kill_process.cold+0x10/0x6ef mm/oom_kill.c:954 out_of_memory mm/oom_kill.c:1129 [inline] out_of_memory+0x936/0x12d0 mm/oom_kill.c:1062 mem_cgroup_out_of_memory+0x1d2/0x240 mm/memcontrol.c:1416 kobject: 'loop4' (000000009228f136): kobject_uevent_env kobject: 'loop4' (000000009228f136): fill_kobj_path: path = '/devices/virtual/block/loop4' mem_cgroup_oom mm/memcontrol.c:1742 [inline] try_charge+0xef7/0x1480 mm/memcontrol.c:2304 mem_cgroup_try_charge+0x259/0x6b0 mm/memcontrol.c:5972 mem_cgroup_try_charge_delay+0x1f/0xa0 mm/memcontrol.c:5987 wp_page_copy+0x430/0x16a0 mm/memory.c:2520 do_wp_page+0x57d/0x10b0 mm/memory.c:2799 handle_pte_fault mm/memory.c:4057 [inline] __handle_mm_fault+0x2305/0x3f80 mm/memory.c:4165 handle_mm_fault+0x1b5/0x690 mm/memory.c:4202 __do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1390 do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1465 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1204 RIP: 0033:0x40ea18 Code: 8b 34 c6 4a 8d 04 2e 48 3d ff ff ff 7e 0f 86 77 ff ff ff bf 95 ee 4b 00 31 c0 e8 13 33 ff ff 31 ff e8 5c 2f ff ff 0f 1f 40 00 <89> 3c b5 00 00 73 00 eb b6 31 ed 0f 1f 44 00 00 80 3d 4e 1a 66 00 RSP: 002b:00007ffd2e0545c0 EFLAGS: 00010246 RAX: 00000000f20d9cc9 RBX: 00000000379c6179 RCX: 0000001b31b20000 RDX: 0000000000000000 RSI: 0000000000001cc9 RDI: fffffffff20d9cc9 RBP: 0000000000000015 R08: 00000000f20d9cc9 R09: 00000000f20d9ccd R10: 00007ffd2e054760 R11: 0000000000000246 R12: 000000000075bfa8 R13: 0000000080000000 R14: 00007fe501e62008 R15: 0000000000000028 kobject: 'loop5' (0000000085d872b6): kobject_uevent_env kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path = '/devices/virtual/block/loop2' Task in /syz3 killed as a result of limit of /syz3 memory: usage 307168kB, limit 307200kB, failcnt 1157 memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0 kmem: usage 0kB, limit 9007199254740988kB, failcnt 0 Memory cgroup stats for /syz3: cache:36KB rss:249836KB rss_huge:223232KB shmem:0KB mapped_file:0KB dirty:0KB writeback:0KB swap:0KB inactive_anon:0KB active_anon:249896KB inactive_file:0KB active_file:0KB unevictable:0KB Memory cgroup out of memory: Kill process 31414 (syz-executor.3) score 1113 or sacrifice child Killed process 31414 (syz-executor.3) total-vm:72580kB, anon-rss:2192kB, file-rss:35800kB, shmem-rss:0kB oom_reaper: reaped process 31414 (syz-executor.3), now anon-rss:0kB, file-rss:34840kB, shmem-rss:0kB kobject: 'loop3' (00000000064a2131): kobject_uevent_env kobject: 'loop3' (00000000064a2131): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (0000000085d872b6): kobject_uevent_env kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (000000009228f136): kobject_uevent_env kobject: 'loop4' (000000009228f136): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path = '/devices/virtual/block/loop2' syz-executor.3 invoked oom-killer: gfp_mask=0x6000c0(GFP_KERNEL), nodemask=(null), order=0, oom_score_adj=1000 atomic_op 0000000082dbd6e8 conn xmit_atomic (null) syz-executor.3 cpuset=syz3 mems_allowed=0-1 CPU: 0 PID: 7162 Comm: syz-executor.3 Not tainted 4.19.69 #43 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 dump_header+0x15e/0xa55 mm/oom_kill.c:441 kobject: 'loop5' (0000000085d872b6): kobject_uevent_env kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path = '/devices/virtual/block/loop5' oom_kill_process.cold+0x10/0x6ef mm/oom_kill.c:954 out_of_memory mm/oom_kill.c:1129 [inline] out_of_memory+0x936/0x12d0 mm/oom_kill.c:1062 mem_cgroup_out_of_memory+0x1d2/0x240 mm/memcontrol.c:1416 mem_cgroup_oom mm/memcontrol.c:1742 [inline] try_charge+0xef7/0x1480 mm/memcontrol.c:2304 mem_cgroup_try_charge+0x259/0x6b0 mm/memcontrol.c:5972 mem_cgroup_try_charge_delay+0x1f/0xa0 mm/memcontrol.c:5987 wp_page_copy+0x430/0x16a0 mm/memory.c:2520 do_wp_page+0x57d/0x10b0 mm/memory.c:2799 handle_pte_fault mm/memory.c:4057 [inline] __handle_mm_fault+0x2305/0x3f80 mm/memory.c:4165 handle_mm_fault+0x1b5/0x690 mm/memory.c:4202 __do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1390 do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1465 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1204 RIP: 0033:0x40c228 Code: 00 00 49 8d be 88 00 00 00 48 89 ea 48 89 de 0f 85 dd 00 00 00 e8 38 2c 00 00 8b 05 e2 bd 32 00 48 8b 15 73 42 66 00 83 c0 01 <89> 05 d2 bd 32 00 89 02 48 83 c4 08 5b 5d 41 5c 41 5d 41 5e 41 5f RSP: 002b:00007ffd2e054620 EFLAGS: 00010206 RAX: 0000000000000003 RBX: 0000001b30b20e00 RCX: 0000001b31b20000 RDX: 0000001b30b20000 RSI: 0000000000001e2f RDI: ffffffff13f8fe2f RBP: 0000001b30b20e04 R08: 0000000013f8fe2f R09: 0000000013f8fe33 R10: 00007ffd2e054760 R11: 0000000000000246 R12: 0000001b30b20e08 R13: 00000000000e3bb6 R14: 000000000075bfc8 R15: 000000000075bfd4 Task in /syz3 killed as a result of limit of /syz3 memory: usage 307200kB, limit 307200kB, failcnt 1207 memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0 kmem: usage 0kB, limit 9007199254740988kB, failcnt 0 Memory cgroup stats for /syz3: cache:36KB rss:249876KB rss_huge:223232KB shmem:0KB mapped_file:0KB dirty:0KB writeback:0KB swap:0KB inactive_anon:0KB active_anon:249940KB inactive_file:0KB active_file:0KB unevictable:0KB Memory cgroup out of memory: Kill process 15346 (syz-executor.3) score 1113 or sacrifice child Killed process 15346 (syz-executor.3) total-vm:72712kB, anon-rss:2200kB, file-rss:35788kB, shmem-rss:0kB kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path = '/devices/virtual/block/loop2' syz-executor.3 invoked oom-killer: gfp_mask=0x7080c0(GFP_KERNEL_ACCOUNT|__GFP_ZERO), nodemask=(null), order=0, oom_score_adj=1000 syz-executor.3 cpuset=syz3 mems_allowed=0-1 CPU: 1 PID: 7187 Comm: syz-executor.3 Not tainted 4.19.69 #43 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 dump_header+0x15e/0xa55 mm/oom_kill.c:441 oom_kill_process.cold+0x10/0x6ef mm/oom_kill.c:954 out_of_memory mm/oom_kill.c:1129 [inline] out_of_memory+0x936/0x12d0 mm/oom_kill.c:1062 mem_cgroup_out_of_memory+0x1d2/0x240 mm/memcontrol.c:1416 mem_cgroup_oom mm/memcontrol.c:1742 [inline] try_charge+0xc4e/0x1480 mm/memcontrol.c:2304 memcg_kmem_charge_memcg+0x7c/0x130 mm/memcontrol.c:2634 memcg_kmem_charge+0x136/0x370 mm/memcontrol.c:2667 __alloc_pages_nodemask+0x3c3/0x750 mm/page_alloc.c:4413 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2193 alloc_pages include/linux/gfp.h:509 [inline] pte_alloc_one+0x1b/0x1a0 arch/x86/mm/pgtable.c:35 do_fault_around mm/memory.c:3635 [inline] do_read_fault mm/memory.c:3676 [inline] do_fault mm/memory.c:3810 [inline] handle_pte_fault mm/memory.c:4041 [inline] __handle_mm_fault+0x3528/0x3f80 mm/memory.c:4165 handle_mm_fault+0x1b5/0x690 mm/memory.c:4202 __do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1390 do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1465 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1204 RIP: 0033:0x459879 Code: Bad RIP value. RSP: 002b:00007fe4ffe60c78 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000459879 RDX: 9999999999999999 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 000000000075bf20 R08: ffffffffffffffff R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe4ffe616d4 R13: 00000000004bfd46 R14: 00000000004d1af8 R15: 00000000ffffffff Task in /syz3 killed as a result of limit of /syz3 memory: usage 304728kB, limit 307200kB, failcnt 1207 memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0 kmem: usage 0kB, limit 9007199254740988kB, failcnt 0 Memory cgroup stats for /syz3: cache:36KB rss:247792KB rss_huge:221184KB shmem:0KB mapped_file:0KB dirty:0KB writeback:0KB swap:0KB inactive_anon:0KB active_anon:247696KB inactive_file:0KB active_file:8KB unevictable:0KB Memory cgroup out of memory: Kill process 16634 (syz-executor.3) score 1113 or sacrifice child Killed process 16634 (syz-executor.3) total-vm:72712kB, anon-rss:2200kB, file-rss:35788kB, shmem-rss:0kB kobject: 'loop4' (000000009228f136): kobject_uevent_env kobject: 'loop4' (000000009228f136): fill_kobj_path: path = '/devices/virtual/block/loop4' atomic_op 000000009612f109 conn xmit_atomic (null) kobject: 'loop1' (00000000946a99c0): kobject_uevent_env kobject: 'loop1' (00000000946a99c0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (0000000085d872b6): kobject_uevent_env kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path = '/devices/virtual/block/loop5' __ntfs_warning: 57 callbacks suppressed ntfs: (device loop1): parse_options(): Option utf8 is no longer supported, using option nls=utf8. Please use option nls=utf8 in the future and make sure utf8 is compiled either as a module or into the kernel. kobject: 'loop3' (00000000064a2131): kobject_uevent_env kobject: 'loop3' (00000000064a2131): fill_kobj_path: path = '/devices/virtual/block/loop3' ntfs: (device loop1): parse_options(): Unrecognized mount option appraise_type. ntfs: (device loop1): parse_options(): Unrecognized mount option euid>00000000000000000000. kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env atomic_op 00000000e097167a conn xmit_atomic (null) kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (00000000946a99c0): kobject_uevent_env kobject: 'loop1' (00000000946a99c0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (0000000085d872b6): kobject_uevent_env kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000946a99c0): kobject_uevent_env kobject: 'loop1' (00000000946a99c0): fill_kobj_path: path = '/devices/virtual/block/loop1' atomic_op 000000001e8fc05f conn xmit_atomic (null) kobject: 'loop3' (00000000064a2131): kobject_uevent_env kobject: 'loop3' (00000000064a2131): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (00000000946a99c0): kobject_uevent_env kobject: 'loop1' (00000000946a99c0): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (0000000085d872b6): kobject_uevent_env kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path = '/devices/virtual/block/loop5' atomic_op 00000000930c5968 conn xmit_atomic (null) kobject: 'loop3' (00000000064a2131): kobject_uevent_env kobject: 'loop3' (00000000064a2131): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (0000000085d872b6): kobject_uevent_env kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000064a2131): kobject_uevent_env kobject: 'loop3' (00000000064a2131): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (000000009228f136): kobject_uevent_env kobject: 'loop4' (000000009228f136): fill_kobj_path: path = '/devices/virtual/block/loop4' atomic_op 00000000ac833d89 conn xmit_atomic (null) kobject: 'loop5' (0000000085d872b6): kobject_uevent_env kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path = '/devices/virtual/block/loop5' atomic_op 000000009319c13a conn xmit_atomic (null) kobject: 'loop3' (00000000064a2131): kobject_uevent_env Unknown ioctl 35302 kobject: 'loop3' (00000000064a2131): fill_kobj_path: path = '/devices/virtual/block/loop3' atomic_op 00000000846767aa conn xmit_atomic (null) kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (0000000085d872b6): kobject_uevent_env kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000064a2131): kobject_uevent_env kobject: 'loop3' (00000000064a2131): fill_kobj_path: path = '/devices/virtual/block/loop3' atomic_op 000000008ef349f2 conn xmit_atomic (null) kobject: 'loop5' (0000000085d872b6): kobject_uevent_env kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000064a2131): kobject_uevent_env kobject: 'loop3' (00000000064a2131): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (000000009228f136): kobject_uevent_env kobject: 'loop4' (000000009228f136): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (0000000085d872b6): kobject_uevent_env kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (00000000064a2131): kobject_uevent_env kobject: 'loop3' (00000000064a2131): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (0000000085d872b6): kobject_uevent_env kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path = '/devices/virtual/block/loop5' syz-executor.3 invoked oom-killer: gfp_mask=0x6000c0(GFP_KERNEL), nodemask=(null), order=0, oom_score_adj=1000 syz-executor.3 cpuset=syz3 mems_allowed=0-1 CPU: 1 PID: 7381 Comm: syz-executor.3 Not tainted 4.19.69 #43 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 dump_header+0x15e/0xa55 mm/oom_kill.c:441 oom_kill_process.cold+0x10/0x6ef mm/oom_kill.c:954 out_of_memory mm/oom_kill.c:1129 [inline] out_of_memory+0x936/0x12d0 mm/oom_kill.c:1062 mem_cgroup_out_of_memory+0x1d2/0x240 mm/memcontrol.c:1416 mem_cgroup_oom mm/memcontrol.c:1742 [inline] try_charge+0xef7/0x1480 mm/memcontrol.c:2304 mem_cgroup_try_charge+0x259/0x6b0 mm/memcontrol.c:5972 mem_cgroup_try_charge_delay+0x1f/0xa0 mm/memcontrol.c:5987 do_huge_pmd_wp_page_fallback mm/huge_memory.c:1186 [inline] do_huge_pmd_wp_page+0x97e/0x34a0 mm/huge_memory.c:1346 wp_huge_pmd mm/memory.c:3942 [inline] __handle_mm_fault+0x167b/0x3f80 mm/memory.c:4155 handle_mm_fault+0x1b5/0x690 mm/memory.c:4202 __do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1390 do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1465 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1204 RIP: 0033:0x440af9 Code: b7 0e 66 89 0f 48 83 c6 02 48 83 c7 02 0f 1f 40 00 f6 c2 04 74 0c 8b 0e 89 0f 48 83 c6 04 48 83 c7 04 f6 c2 08 74 0e 48 8b 0e <48> 89 0f 48 83 c6 08 48 83 c7 08 81 e2 f0 00 00 00 74 1f 0f 1f 40 RSP: 002b:00007ffd2e054688 EFLAGS: 00010202 RAX: 0000000020000140 RBX: 0000000000000000 RCX: 0030656c69662f2e RDX: 0000000000000008 RSI: 0000000000760ad0 RDI: 0000000020000140 RBP: 0000000000760ab0 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000004395d0 R11: 0000000000000012 R12: 00000000004c5e06 R13: 000000000000012c R14: 0000000000760ab8 R15: fffffffffffffffe kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env Task in /syz3 killed as a result of limit of /syz3 kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path = '/devices/virtual/block/loop2' memory: usage 307200kB, limit 307200kB, failcnt 1239 memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0 kobject: 'loop4' (000000009228f136): kobject_uevent_env kmem: usage 0kB, limit 9007199254740988kB, failcnt 0 kobject: 'loop4' (000000009228f136): fill_kobj_path: path = '/devices/virtual/block/loop4' Memory cgroup stats for /syz3: cache:36KB rss:248044KB rss_huge:221184KB shmem:0KB mapped_file:0KB dirty:0KB writeback:0KB swap:0KB inactive_anon:0KB active_anon:248148KB inactive_file:4KB active_file:4KB unevictable:0KB Memory cgroup out of memory: Kill process 19134 (syz-executor.3) score 1113 or sacrifice child Killed process 19134 (syz-executor.3) total-vm:72580kB, anon-rss:2192kB, file-rss:35796kB, shmem-rss:0kB kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path = '/devices/virtual/block/loop2' syz-executor.5 invoked oom-killer: gfp_mask=0x7080c0(GFP_KERNEL_ACCOUNT|__GFP_ZERO), nodemask=(null), order=3, oom_score_adj=1000 kobject: 'loop4' (000000009228f136): kobject_uevent_env kobject: 'loop4' (000000009228f136): fill_kobj_path: path = '/devices/virtual/block/loop4' syz-executor.5 cpuset=syz5 mems_allowed=0-1 CPU: 0 PID: 7395 Comm: syz-executor.5 Not tainted 4.19.69 #43 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 dump_header+0x15e/0xa55 mm/oom_kill.c:441 oom_kill_process.cold+0x10/0x6ef mm/oom_kill.c:954 out_of_memory mm/oom_kill.c:1129 [inline] out_of_memory+0x936/0x12d0 mm/oom_kill.c:1062 mem_cgroup_out_of_memory+0x1d2/0x240 mm/memcontrol.c:1416 mem_cgroup_oom mm/memcontrol.c:1742 [inline] try_charge+0xef7/0x1480 mm/memcontrol.c:2304 memcg_kmem_charge_memcg+0x7c/0x130 mm/memcontrol.c:2634 memcg_kmem_charge+0x136/0x370 mm/memcontrol.c:2667 __alloc_pages_nodemask+0x3c3/0x750 mm/page_alloc.c:4413 __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] alloc_pages_node include/linux/gfp.h:500 [inline] alloc_thread_stack_node kernel/fork.c:241 [inline] dup_task_struct kernel/fork.c:806 [inline] copy_process.part.0+0x3e0/0x7a30 kernel/fork.c:1732 copy_process kernel/fork.c:1689 [inline] _do_fork+0x257/0xfd0 kernel/fork.c:2202 __do_sys_clone kernel/fork.c:2309 [inline] __se_sys_clone kernel/fork.c:2303 [inline] __x64_sys_clone+0xbf/0x150 kernel/fork.c:2303 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c249 Code: ff 48 85 f6 0f 84 27 8e fb ff 48 83 ee 10 48 89 4e 08 48 89 3e 48 89 d7 4c 89 c2 4d 89 c8 4c 8b 54 24 08 b8 38 00 00 00 0f 05 <48> 85 c0 0f 8c fe 8d fb ff 74 01 c3 31 ed 48 f7 c7 00 00 01 00 75 RSP: 002b:00007fffbb9bee18 EFLAGS: 00000202 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007fe248f0a700 RCX: 000000000045c249 RDX: 00007fe248f0a9d0 RSI: 00007fe248f09db0 RDI: 00000000003d0f00 RBP: 00007fffbb9bf030 R08: 00007fe248f0a700 R09: 00007fe248f0a700 R10: 00007fe248f0a9d0 R11: 0000000000000202 R12: 0000000000000000 R13: 00007fffbb9beecf R14: 00007fe248f0a9c0 R15: 000000000075bf2c kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (00000000064a2131): kobject_uevent_env kobject: 'loop3' (00000000064a2131): fill_kobj_path: path = '/devices/virtual/block/loop3' Task in /syz5 killed as a result of limit of /syz5 memory: usage 307200kB, limit 307200kB, failcnt 3375 memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0 kmem: usage 0kB, limit 9007199254740988kB, failcnt 0 Memory cgroup stats for /syz5: cache:112KB rss:242852KB rss_huge:210944KB shmem:0KB mapped_file:0KB dirty:0KB writeback:0KB swap:0KB inactive_anon:0KB active_anon:242964KB inactive_file:0KB active_file:0KB unevictable:0KB Memory cgroup out of memory: Kill process 7301 (syz-executor.5) score 1113 or sacrifice child Killed process 7301 (syz-executor.5) total-vm:72712kB, anon-rss:2204kB, file-rss:35788kB, shmem-rss:0kB syz-executor.3 invoked oom-killer: gfp_mask=0x6000c0(GFP_KERNEL), nodemask=(null), order=0, oom_score_adj=1000 syz-executor.3 cpuset=syz3 mems_allowed=0-1 CPU: 0 PID: 7439 Comm: syz-executor.3 Not tainted 4.19.69 #43 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 rds_sendmsg: 3 callbacks suppressed atomic_op 0000000009777ed4 conn xmit_atomic (null) Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 dump_header+0x15e/0xa55 mm/oom_kill.c:441 kobject: 'loop4' (000000009228f136): kobject_uevent_env oom_kill_process.cold+0x10/0x6ef mm/oom_kill.c:954 kobject: 'loop4' (000000009228f136): fill_kobj_path: path = '/devices/virtual/block/loop4' out_of_memory mm/oom_kill.c:1129 [inline] out_of_memory+0x936/0x12d0 mm/oom_kill.c:1062 mem_cgroup_out_of_memory+0x1d2/0x240 mm/memcontrol.c:1416 mem_cgroup_oom mm/memcontrol.c:1742 [inline] try_charge+0xef7/0x1480 mm/memcontrol.c:2304 mem_cgroup_try_charge+0x259/0x6b0 mm/memcontrol.c:5972 mem_cgroup_try_charge_delay+0x1f/0xa0 mm/memcontrol.c:5987 do_huge_pmd_wp_page_fallback mm/huge_memory.c:1186 [inline] do_huge_pmd_wp_page+0x97e/0x34a0 mm/huge_memory.c:1346 wp_huge_pmd mm/memory.c:3942 [inline] __handle_mm_fault+0x167b/0x3f80 mm/memory.c:4155 handle_mm_fault+0x1b5/0x690 mm/memory.c:4202 __do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1390 do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1465 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1204 RIP: 0033:0x440af9 Code: b7 0e 66 89 0f 48 83 c6 02 48 83 c7 02 0f 1f 40 00 f6 c2 04 74 0c 8b 0e 89 0f 48 83 c6 04 48 83 c7 04 f6 c2 08 74 0e 48 8b 0e <48> 89 0f 48 83 c6 08 48 83 c7 08 81 e2 f0 00 00 00 74 1f 0f 1f 40 RSP: 002b:00007ffd2e054688 EFLAGS: 00010202 RAX: 0000000020000140 RBX: 0000000000000000 RCX: 0030656c69662f2e RDX: 0000000000000008 RSI: 0000000000760ad0 RDI: 0000000020000140 RBP: 0000000000760ab0 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000004395d0 R11: 0000000000000012 R12: 00000000004c5e06 R13: 000000000000012c R14: 0000000000760ab8 R15: fffffffffffffffe Task in /syz3 killed as a result of limit of /syz3 kobject: 'loop5' (0000000085d872b6): kobject_uevent_env memory: usage 307200kB, limit 307200kB, failcnt 1282 memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0 kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path = '/devices/virtual/block/loop5' kmem: usage 0kB, limit 9007199254740988kB, failcnt 0 atomic_op 00000000719819b1 conn xmit_atomic (null) Memory cgroup stats for /syz3: cache:36KB rss:248000KB rss_huge:221184KB shmem:0KB mapped_file:0KB dirty:0KB writeback:0KB swap:0KB inactive_anon:0KB active_anon:248140KB inactive_file:0KB active_file:4KB unevictable:0KB kobject: 'loop5' (0000000085d872b6): kobject_uevent_env kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path = '/devices/virtual/block/loop5' Memory cgroup out of memory: Kill process 19967 (syz-executor.3) score 1113 or sacrifice child Killed process 19967 (syz-executor.3) total-vm:72580kB, anon-rss:2192kB, file-rss:35796kB, shmem-rss:0kB kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path = '/devices/virtual/block/loop2' atomic_op 00000000e1f67faa conn xmit_atomic (null) kobject: 'loop5' (0000000085d872b6): kobject_uevent_env kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000064a2131): kobject_uevent_env kobject: 'loop3' (00000000064a2131): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path = '/devices/virtual/block/loop2' atomic_op 0000000030601010 conn xmit_atomic (null) kobject: 'loop4' (000000009228f136): kobject_uevent_env kobject: 'loop4' (000000009228f136): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (0000000085d872b6): kobject_uevent_env kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path = '/devices/virtual/block/loop5' atomic_op 000000001b382428 conn xmit_atomic (null) kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (0000000085d872b6): kobject_uevent_env kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000064a2131): kobject_uevent_env kobject: 'loop3' (00000000064a2131): fill_kobj_path: path = '/devices/virtual/block/loop3' atomic_op 0000000095026511 conn xmit_atomic (null) kobject: 'loop5' (0000000085d872b6): kobject_uevent_env kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path = '/devices/virtual/block/loop2' atomic_op 00000000f055bf0e conn xmit_atomic (null) kobject: 'loop5' (0000000085d872b6): kobject_uevent_env kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (000000009228f136): kobject_uevent_env kobject: 'loop4' (000000009228f136): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (00000000064a2131): kobject_uevent_env atomic_op 000000000ede4210 conn xmit_atomic (null) kobject: 'loop3' (00000000064a2131): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (000000009228f136): kobject_uevent_env kobject: 'loop4' (000000009228f136): fill_kobj_path: path = '/devices/virtual/block/loop4' atomic_op 00000000157b08cc conn xmit_atomic (null) kobject: 'loop3' (00000000064a2131): kobject_uevent_env kobject: 'loop3' (00000000064a2131): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (0000000085d872b6): kobject_uevent_env kobject: 'loop5' (0000000085d872b6): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path = '/devices/virtual/block/loop2' atomic_op 00000000b9c604e7 conn xmit_atomic (null) kobject: 'loop2' (0000000069c25b1d): kobject_uevent_env kobject: 'loop2' (0000000069c25b1d): fill_kobj_path: path = '/devices/virtual/block/loop2'