syzbot

 sign-in | mailing list | source | docs
🐞 Open [712]
🐞 Fixed [297]
🐞 Invalid [838]
≡ Crashes
Kernel Health Bugs/Month Bug Lifetimes Fuzzing
💬 Send us feedback

possible deadlock in static_key_slow_dec

Status: auto-closed as invalid on 2019/12/30 04:27
Reported-by: syzbot+c1fa0fb3ac382f34194e@syzkaller.appspotmail.com
First crash: 1921d, last: 1921d
▶ ▼ Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 possible deadlock in static_key_slow_dec (3) 3 1108d 1156d 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 813d 2219d 0/28 auto-obsoleted due to no activity on 2023/01/11 02:59
linux-4.19 possible deadlock in static_key_slow_dec (2) 2 1425d 1509d 0/1 auto-closed as invalid on 2021/05/08 21:09

Sample crash report:
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'

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/09/01 04:26 linux-4.19.y 97ab07e11fbf bad3cce2 .config console log report ci2-linux-4-19
* Struck through repros no longer work on HEAD.