[syzbot] [netfilter?] INFO: rcu detected stall in tcp_setsockopt

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Aug 29, 2023, 5:38:07 AM8/29/23

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Hello,

syzbot found the following issue on:

HEAD commit: 2dde18cd1d8f Linux 6.5
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=176cb7eba80000
kernel config: https://syzkaller.appspot.com/x/.config?x=33d0e0022fa231d7
dashboard link: https://syzkaller.appspot.com/bug?extid=1a11c39caf29450eac9f
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=162d9beba80000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/1fedeec6ef0b/disk-2dde18cd.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/d76084fd6305/vmlinux-2dde18cd.xz
kernel image: https://storage.googleapis.com/syzbot-assets/33a99d14581e/bzImage-2dde18cd.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+1a11c3...@syzkaller.appspotmail.com

Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly
393402 pages reserved
0 pages cma reserved
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1):
P1021/1:b..l

rcu: (detected by 1, t=10559 jiffies, g=10501, q=842 ncpus=2)
task:kworker/u4:5 state:R
running task stack:25728 pid:1021 ppid:2 flags:0x00004000
Workqueue: bat_events batadv_nc_worker

Call Trace:
<TASK>
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0xee1/0x59f0 kernel/sched/core.c:6710
preempt_schedule_notrace+0x5f/0xe0 kernel/sched/core.c:6972
preempt_schedule_notrace_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:46
rcu_is_watching+0x86/0xb0 kernel/rcu/tree.c:696
trace_lock_acquire include/trace/events/lock.h:24 [inline]
lock_acquire+0x464/0x510 kernel/locking/lockdep.c:5732
rcu_lock_acquire include/linux/rcupdate.h:303 [inline]
rcu_read_lock include/linux/rcupdate.h:749 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0x175/0x10f0 net/batman-adv/network-coding.c:719
process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2600
worker_thread+0x687/0x1110 kernel/workqueue.c:2751
kthread+0x33a/0x430 kernel/kthread.c:389
ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
</TASK>
rcu: rcu_preempt kthread starved for 10557 jiffies! g10501 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R
running task stack:28320 pid:16 ppid:2 flags:0x00004000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0xee1/0x59f0 kernel/sched/core.c:6710
schedule+0xe7/0x1b0 kernel/sched/core.c:6786
schedule_timeout+0x157/0x2c0 kernel/time/timer.c:2167
rcu_gp_fqs_loop+0x1ec/0xa50 kernel/rcu/tree.c:1609
rcu_gp_kthread+0x249/0x380 kernel/rcu/tree.c:1808
kthread+0x33a/0x430 kernel/kthread.c:389
ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
</TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 5066 Comm: syz-executor.0 Not tainted 6.5.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x70 kernel/locking/spinlock.c:194
Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 96 ea 30 f7 48 89 df e8 6e 69 31 f7 f7 c5 00 02 00 00 75 1f 9c 58 f6 c4 02 75 2f <bf> 01 00 00 00 e8 15 0c 23 f7 65 8b 05 e6 99 cd 75 85 c0 74 12 5b
RSP: 0018:ffffc900001e0c90 EFLAGS: 00000246

RAX: 0000000000000012 RBX: ffff888064ee4218 RCX: 1ffffffff231714a
RDX: 0000000000000000 RSI: ffffffff8a6c8080 RDI: ffffffff8ac813c0
RBP: 0000000000000246 R08: 0000000000000001 R09: fffffbfff2309ff0
R10: ffffffff9184ff87 R11: ffffffffffff7010 R12: ffff888064ee4110
R13: 1ffff9200003c196 R14: ffffffff86a85b20 R15: 0000000000000001
FS: 000055555635b480(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f994d17a1f8 CR3: 000000002140f000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700
expire_timers kernel/time/timer.c:1751 [inline]
__run_timers+0x764/0xb10 kernel/time/timer.c:2022
run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2035
__do_softirq+0x218/0x965 kernel/softirq.c:553
invoke_softirq kernel/softirq.c:427 [inline]
__irq_exit_rcu kernel/softirq.c:632 [inline]
irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644
sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1109
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:write_comp_data+0x3c/0x90 kernel/kcov.c:236
Code: 01 00 00 49 89 f8 65 48 8b 14 25 80 b9 03 00 a9 00 01 ff 00 74 0e 85 f6 74 59 8b 82 04 16 00 00 85 c0 74 4f 8b 82 e0 15 00 00 <83> f8 03 75 44 48 8b 82 e8 15 00 00 8b 92 e4 15 00 00 48 8b 38 48
RSP: 0018:ffffc90003e0f718 EFLAGS: 00000246

RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff8193ed61
RDX: ffff888019b3bb80 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 00007f994d07e800 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff8173dd50
R13: ffffc90003e0f838 R14: 0000000000000000 R15: ffff888019b3bb80
rcu_read_unlock include/linux/rcupdate.h:778 [inline]
is_bpf_text_address+0x131/0x1a0 kernel/bpf/core.c:721
kernel_text_address kernel/extable.c:125 [inline]
kernel_text_address+0x85/0xf0 kernel/extable.c:94
__kernel_text_address+0xd/0x30 kernel/extable.c:79
unwind_get_return_address+0x55/0xa0 arch/x86/kernel/unwind_orc.c:369
arch_stack_walk+0x9d/0xf0 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x96/0xd0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
kasan_set_track+0x25/0x30 mm/kasan/common.c:52
____kasan_kmalloc mm/kasan/common.c:374 [inline]
__kasan_kmalloc+0xa2/0xb0 mm/kasan/common.c:383
kasan_kmalloc include/linux/kasan.h:196 [inline]
__do_kmalloc_node mm/slab_common.c:985 [inline]
__kmalloc_node+0x60/0x100 mm/slab_common.c:992
kmalloc_node include/linux/slab.h:602 [inline]
kvmalloc_node+0x99/0x1a0 mm/util.c:604
kvmalloc include/linux/slab.h:720 [inline]
xt_alloc_table_info+0x3e/0xa0 net/netfilter/x_tables.c:1192
do_replace net/ipv6/netfilter/ip6_tables.c:1139 [inline]
do_ip6t_set_ctl+0x53c/0xbd0 net/ipv6/netfilter/ip6_tables.c:1636
nf_setsockopt+0x87/0xe0 net/netfilter/nf_sockopt.c:101
ipv6_setsockopt+0x12b/0x190 net/ipv6/ipv6_sockglue.c:1017
tcp_setsockopt+0x9d/0x100 net/ipv4/tcp.c:3697
__sys_setsockopt+0x2ca/0x5b0 net/socket.c:2263
__do_sys_setsockopt net/socket.c:2274 [inline]
__se_sys_setsockopt net/socket.c:2271 [inline]
__x64_sys_setsockopt+0xbd/0x150 net/socket.c:2271
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f994d07e83a
Code: ff ff ff c3 0f 1f 40 00 48 c7 c2 b0 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 49 89 ca b8 36 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 c3 0f 1f 44 00 00 48 c7 c2 b0 ff ff ff f7
RSP: 002b:00007fff051377c8 EFLAGS: 00000202
ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007fff05137850 RCX: 00007f994d07e83a
RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000003
RBP: 0000000000000003 R08: 00000000000003b8 R09: 0079746972756365
R10: 00007f994d176ba0 R11: 0000000000000202 R12: 00007f994d176b40
R13: 00007fff051377ec R14: 0000000000000000 R15: 00007f994d178d00
</TASK>
Mem-Info:
active_anon:10231 inactive_anon:489 isolated_anon:0
active_file:0 inactive_file:44779 isolated_file:0
unevictable:768 dirty:39 writeback:0
slab_reclaimable:20277 slab_unreclaimable:98025
mapped:7048 shmem:1257 pagetables:544
sec_pagetables:0 bounce:0
kernel_misc_reclaimable:0
free:1429090 free_pcp:8870 free_cma:0
Node 0 active_anon:40924kB inactive_anon:1956kB active_file:0kB inactive_file:179036kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:28192kB dirty:144kB writeback:0kB shmem:3492kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB kernel_stack:10548kB pagetables:2176kB sec_pagetables:0kB all_unreclaimable? no
Node 1 active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:12kB writeback:0kB shmem:1536kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB kernel_stack:16kB pagetables:0kB sec_pagetables:0kB all_unreclaimable? no
Node 0 DMA free:15360kB boost:0kB min:200kB low:248kB high:296kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15360kB mlocked:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 2613 2614 2614 2614
Node 0 DMA32 free:1771508kB boost:0kB min:35408kB low:44260kB high:53112kB reserved_highatomic:0KB active_anon:40880kB inactive_anon:1952kB active_file:0kB inactive_file:177980kB unevictable:1536kB writepending:140kB present:3129332kB managed:2680488kB mlocked:0kB bounce:0kB free_pcp:20144kB local_pcp:7960kB free_cma:0kB
lowmem_reserve[]: 0 0 1 1 1
Node 0 Normal free:12kB boost:0kB min:12kB low:12kB high:12kB reserved_highatomic:0KB active_anon:44kB inactive_anon:4kB active_file:0kB inactive_file:1056kB unevictable:0kB writepending:4kB present:1048576kB managed:1128kB mlocked:0kB bounce:0kB free_pcp:12kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 1 Normal free:3929480kB boost:0kB min:54480kB low:68100kB high:81720kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB unevictable:1536kB writepending:12kB present:4194304kB managed:4117620kB mlocked:0kB bounce:0kB free_pcp:15324kB local_pcp:6944kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15360kB
Node 0 DMA32: 143*4kB (UE) 1403*8kB (UE) 740*16kB (UME) 1*32kB (U) 2*64kB (ME) 2*128kB (UM) 2*256kB (UE) 2*512kB (ME) 3*1024kB (UME) 1*2048kB (M) 425*4096kB (M) = 1771508kB
Node 0 Normal: 1*4kB (M) 1*8kB (M) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 12kB
Node 1 Normal: 64*4kB (UME) 23*8kB (UME) 19*16kB (UE) 29*32kB (UME) 10*64kB (UME) 1*128kB (U) 2*256kB (UE) 1*512kB (E) 2*1024kB (ME) 2*2048kB (UE) 957*4096kB (M) = 3929480kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 0 hugepages_total=2 hugepages_free=2 hugepages_surp=0 hugepages_size=2048kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 1 hugepages_total=2 hugepages_free=2 hugepages_surp=0 hugepages_size=2048kB
46036 total pagecache pages
0 pages in swap cache
Free swap = 124996kB
Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly
393402 pages reserved
0 pages cma reserved
Mem-Info:
active_anon:10231 inactive_anon:489 isolated_anon:0
active_file:0 inactive_file:44779 isolated_file:0
unevictable:768 dirty:39 writeback:0
slab_reclaimable:20277 slab_unreclaimable:98025
mapped:7048 shmem:1257 pagetables:544
sec_pagetables:0 bounce:0
kernel_misc_reclaimable:0
free:1429090 free_pcp:8863 free_cma:0
Node 0 active_anon:40924kB inactive_anon:1956kB active_file:0kB inactive_file:179036kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:28192kB dirty:144kB writeback:0kB shmem:3492kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB kernel_stack:10548kB pagetables:2176kB sec_pagetables:0kB all_unreclaimable? no
Node 1 active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:12kB writeback:0kB shmem:1536kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB kernel_stack:16kB pagetables:0kB sec_pagetables:0kB all_unreclaimable? no
Node 0 DMA free:15360kB boost:0kB min:200kB low:248kB high:296kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15360kB mlocked:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 2613 2614 2614 2614
Node 0 DMA32 free:1771508kB boost:0kB min:35408kB low:44260kB high:53112kB reserved_highatomic:0KB active_anon:40880kB inactive_anon:1952kB active_file:0kB inactive_file:177980kB unevictable:1536kB writepending:140kB present:3129332kB managed:2680488kB mlocked:0kB bounce:0kB free_pcp:20092kB local_pcp:7960kB free_cma:0kB
lowmem_reserve[]: 0 0 1 1 1
Node 0 Normal free:12kB boost:0kB min:12kB low:12kB high:12kB reserved_highatomic:0KB active_anon:44kB inactive_anon:4kB active_file:0kB inactive_file:1056kB unevictable:0kB writepending:4kB present:1048576kB managed:1128kB mlocked:0kB bounce:0kB free_pcp:12kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 1 Normal free:3929480kB boost:0kB min:54480kB low:68100kB high:81720kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB unevictable:1536kB writepending:12kB present:4194304kB managed:4117620kB mlocked:0kB bounce:0kB free_pcp:15324kB local_pcp:6944kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15360kB
Node 0 DMA32: 143*4kB (UE) 1403*8kB (UE) 740*16kB (UME) 1*32kB (U) 2*64kB (ME) 2*128kB (UM) 2*256kB (UE) 2*512kB (ME) 3*1024kB (UME) 1*2048kB (M) 425*4096kB (M) = 1771508kB
Node 0 Normal: 1*4kB (M) 1*8kB (M) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 12kB
Node 1 Normal: 64*4kB (UME) 23*8kB (UME) 19*16kB (UE) 29*32kB (UME) 10*64kB (UME) 1*128kB (U) 2*256kB (UE) 1*512kB (E) 2*1024kB (ME) 2*2048kB (UE) 957*4096kB (M) = 3929480kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 0 hugepages_total=2 hugepages_free=2 hugepages_surp=0 hugepages_size=2048kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 1 hugepages_total=2 hugepages_free=2 hugepages_surp=0 hugepages_size=2048kB
46036 total pagecache pages
0 pages in swap cache
Free swap = 124996kB
Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly
393402 pages reserved
0 pages cma reserved
Mem-Info:
active_anon:10231 inactive_anon:489 isolated_anon:0
active_file:0 inactive_file:44779 isolated_file:0
unevictable:768 dirty:39 writeback:0
slab_reclaimable:20277 slab_unreclaimable:98076
mapped:7048 shmem:1257 pagetables:544
sec_pagetables:0 bounce:0
kernel_misc_reclaimable:0
free:1429090 free_pcp:8846 free_cma:0
Node 0 active_anon:40924kB inactive_anon:1956kB active_file:0kB inactive_file:179036kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:28192kB dirty:144kB writeback:0kB shmem:3492kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB kernel_stack:10548kB pagetables:2176kB sec_pagetables:0kB all_unreclaimable? no
Node 1 active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:12kB writeback:0kB shmem:1536kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB kernel_stack:16kB pagetables:0kB sec_pagetables:0kB all_unreclaimable? no
Node 0 DMA free:15360kB boost:0kB min:200kB low:248kB high:296kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15360kB mlocked:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 2613 2614 2614 2614
Node 0 DMA32 free:1771508kB boost:0kB min:35408kB low:44260kB high:53112kB reserved_highatomic:0KB active_anon:40880kB inactive_anon:1952kB active_file:0kB inactive_file:177980kB unevictable:1536kB writepending:140kB present:3129332kB managed:2680488kB mlocked:0kB bounce:0kB free_pcp:20048kB local_pcp:7916kB free_cma:0kB
lowmem_reserve[]: 0 0 1 1 1
Node 0 Normal free:12kB boost:0kB min:12kB low:12kB high:12kB reserved_highatomic:0KB active_anon:44kB inactive_anon:4kB active_file:0kB inactive_file:1056kB unevictable:0kB writepending:4kB present:1048576kB managed:1128kB mlocked:0kB bounce:0kB free_pcp:12kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 1 Normal free:3929480kB boost:0kB min:54480kB low:68100kB high:81720kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB unevictable:1536kB writepending:12kB present:4194304kB managed:4117620kB mlocked:0kB bounce:0kB free_pcp:15324kB local_pcp:6944kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15360kB
Node 0 DMA32: 143*4kB (UE) 1403*8kB (UE) 740*16kB (UME) 1*32kB (U) 2*64kB (ME) 2*128kB (UM) 2*256kB (UE) 2*512kB (ME) 3*1024kB (UME) 1*2048kB (M) 425*4096kB (M) = 1771508kB
Node 0 Normal: 1*4kB (M) 1*8kB (M) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 12kB
Node 1 Normal: 64*4kB (UME) 23*8kB (UME) 19*16kB (UE) 29*32kB (UME) 10*64kB (UME) 1*128kB (U) 2*256kB (UE) 1*512kB (E) 2*1024kB (ME) 2*2048kB (UE) 957*4096kB (M) = 3929480kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 0 hugepages_total=2 hugepages_free=2 hugepages_surp=0 hugepages_size=2048kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 1 hugepages_total=2 hugepages_free=2 hugepages_surp=0 hugepages_size=2048kB
46036 total pagecache pages
0 pages in swap cache
Free swap = 124996kB
Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly
393402 pages reserved
0 pages cma reserved
Mem-Info:
active_anon:10231 inactive_anon:489 isolated_anon:0
active_file:0 inactive_file:44779 isolated_file:0
unevictable:768 dirty:39 writeback:0
slab_reclaimable:20277 slab_unreclaimable:98076
mapped:7048 shmem:1257 pagetables:544
sec_pagetables:0 bounce:0
kernel_misc_reclaimable:0
free:1429090 free_pcp:8846 free_cma:0
Node 0 active_anon:40924kB inactive_anon:1956kB active_file:0kB inactive_file:179036kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:28192kB dirty:144kB writeback:0kB shmem:3492kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB kernel_stack:10548kB pagetables:2176kB sec_pagetables:0kB all_unreclaimable? no
Node 1 active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:12kB writeback:0kB shmem:1536kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB kernel_stack:16kB pagetables:0kB sec_pagetables:0kB all_unreclaimable? no
Node 0 DMA free:15360kB boost:0kB min:200kB low:248kB high:296kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15360kB mlocked:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 2613 2614 2614 2614
Node 0 DMA32 free:1771508kB boost:0kB min:35408kB low:44260kB high:53112kB reserved_highatomic:0KB active_anon:40880kB inactive_anon:1952kB active_file:0kB inactive_file:177980kB unevictable:1536kB writepending:140kB present:3129332kB managed:2680488kB mlocked:0kB bounce:0kB free_pcp:20048kB local_pcp:7916kB free_cma:0kB
lowmem_reserve[]: 0 0 1 1 1
Node 0 Normal free:12kB boost:0kB min:12kB low:12kB high:12kB reserved_highatomic:0KB active_anon:44kB inactive_anon:4kB active_file:0kB inactive_file:1056kB unevictable:0kB writepending:4kB present:1048576kB managed:1128kB mlocked:0kB bounce:0kB free_pcp:12kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 1 Normal free:3929480kB boost:0kB min:54480kB low:68100kB high:81720kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB unevictable:1536kB writepending:12kB present:4194304kB managed:4117620kB mlocked:0kB bounce:0kB free_pcp:15324kB local_pcp:6944kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15360kB
Node 0 DMA32: 143*4kB (UE) 1403*8kB (UE) 740*16kB (UME) 1*32kB (U) 2*64kB (ME) 2*128kB (UM) 2*256kB (UE) 2*512kB (ME) 3*1024kB (UME) 1*2048kB (M) 425*4096kB (M) = 1771508kB
Node 0 Normal: 1*4kB (M) 1*8kB (M) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 12kB
Node 1 Normal: 64*4kB (UME) 23*8kB (UME) 19*16kB (UE) 29*32kB (UME) 10*64kB (UME) 1*128kB (U) 2*256kB (UE) 1*512kB (E) 2*1024kB (ME) 2*2048kB (UE) 957*4096kB (M) = 3929480kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 0 hugepages_total=2 hugepages_free=2 hugepages_surp=0 hugepages_size=2048kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 1 hugepages_total=2 hugepages_free=2 hugepages_surp=0 hugepages_size=2048kB
46036 total pagecache pages
0 pages in swap cache
Free swap = 124996kB
Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly
393402 pages reserved
0 pages cma reserved
Mem-Info:
active_anon:10231 inactive_anon:489 isolated_anon:0
active_file:0 inactive_file:44779 isolated_file:0
unevictable:768 dirty:39 writeback:0
slab_reclaimable:20277 slab_unreclaimable:98076
mapped:7048 shmem:1257 pagetables:544
sec_pagetables:0 bounce:0
kernel_misc_reclaimable:0
free:1429090 free_pcp:8846 free_cma:0
Node 0 active_anon:40924kB inactive_anon:1956kB active_file:0kB inactive_file:179036kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:28192kB dirty:144kB writeback:0kB shmem:3492kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB kernel_stack:10548kB pagetables:2176kB sec_pagetables:0kB all_unreclaimable? no
Node 1 active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:12kB writeback:0kB shmem:1536kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB kernel_stack:16kB pagetables:0kB sec_pagetables:0kB all_unreclaimable? no
Node 0 DMA free:15360kB boost:0kB min:200kB low:248kB high:296kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15360kB mlocked:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 2613 2614 2614 2614
Node 0 DMA32 free:1771508kB boost:0kB min:35408kB low:44260kB high:53112kB reserved_highatomic:0KB active_anon:40880kB inactive_anon:1952kB active_file:0kB inactive_file:177980kB unevictable:1536kB writepending:140kB present:3129332kB managed:2680488kB mlocked:0kB bounce:0kB free_pcp:20048kB local_pcp:7916kB free_cma:0kB
lowmem_reserve[]: 0 0 1 1 1
Node 0 Normal free:12kB boost:0kB min:12kB low:12kB high:12kB reserved_highatomic:0KB active_anon:44kB inactive_anon:4kB active_file:0kB inactive_file:1056kB unevictable:0kB writepending:4kB present:1048576kB managed:1128kB mlocked:0kB bounce:0kB free_pcp:12kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 1 Normal free:3929480kB boost:0kB min:54480kB low:68100kB high:81720kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB unevictable:1536kB writepending:12kB present:4194304kB managed:4117620kB mlocked:0kB bounce:0kB free_pcp:15324kB local_pcp:6944kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15360kB
Node 0 DMA32: 143*4kB (UE) 1403*8kB (UE) 740*16kB (UME) 1*32kB (U) 2*64kB (ME) 2*128kB (UM) 2*256kB (UE) 2*512kB (ME) 3*1024kB (UME) 1*2048kB (M) 425*4096kB (M) = 1771508kB
Node 0 Normal: 1*4kB (M) 1*8kB (M) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 12kB
Node 1 Normal: 64*4kB (UME) 23*8kB (UME) 19*16kB (UE) 29*32kB (UME) 10*64kB (UME) 1*128kB (U) 2*256kB (UE) 1*512kB (E) 2*1024kB (ME) 2*2048kB (UE) 957*4096kB (M) = 3929480kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 0 hugepages_total=2 hugepages_free=2 hugepages_surp=0 hugepages_size=2048kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 1 hugepages_total=2 hugepages_free=2 hugepages_surp=0 hugepages_size=2048kB
46036 total pagecache pages
0 pages in swap cache
Free swap = 124996kB
Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly
393402 pages reserved
0 pages cma reserved
Mem-Info:
active_anon:10231 inactive_anon:489 isolated_anon:0
active_file:0 inactive_file:44779 isolated_file:0
unevictable:768 dirty:39 writeback:0
slab_reclaimable:20277 slab_unreclaimable:98076
mapped:7048 shmem:1257 pagetables:544
sec_pagetables:0 bounce:0
kernel_misc_reclaimable:0
free:1429090 free_pcp:8844 free_cma:0
Node 0 active_anon:40924kB inactive_anon:1956kB active_file:0kB inactive_file:179036kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:28192kB dirty:144kB writeback:0kB shmem:3492kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB kernel_stack:10548kB pagetables:2176kB sec_pagetables:0kB all_unreclaimable? no
Node 1 active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:12kB writeback:0kB shmem:1536kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB kernel_stack:16kB pagetables:0kB sec_pagetables:0kB all_unreclaimable? no
Node 0 DMA free:15360kB boost:0kB min:200kB low:248kB high:296kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15360kB mlocked:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 2613 2614 2614 2614
Node 0 DMA32 free:1771508kB boost:0kB min:35408kB low:44260kB high:53112kB reserved_highatomic:0KB active_anon:40880kB inactive_anon:1952kB active_file:0kB inactive_file:177980kB unevictable:1536kB writepending:140kB present:3129332kB managed:2680488kB mlocked:0kB bounce:0kB free_pcp:20040kB local_pcp:7916kB free_cma:0kB
lowmem_reserve[]: 0 0 1 1 1
Node 0 Normal free:12kB boost:0kB min:12kB low:12kB high:12kB reserved_highatomic:0KB active_anon:44kB inactive_anon:4kB active_file:0kB inactive_file:1056kB unevictable:0kB writepending:4kB present:1048576kB managed:1128kB mlocked:0kB bounce:0kB free_pcp:12kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 1 Normal free:3929480kB boost:0kB min:54480kB low:68100kB high:81720kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB unevictable:1536kB writepending:12kB present:4194304kB managed:4117620kB mlocked:0kB bounce:0kB free_pcp:15324kB local_pcp:6944kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15360kB
Node 0 DMA32: 143*4kB (UE) 1403*8kB (UE) 740*16kB (UME) 1*32kB (U) 2*64kB (ME) 2*128kB (UM) 2*256kB (UE) 2*512kB (ME) 3*1024kB (UME) 1*2048kB (M) 425*4096kB (M) = 1771508kB
Node 0 Normal: 1*4kB (M) 1*8kB (M) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 12kB
Node 1 Normal: 64*4kB (UME) 23*8kB (UME) 19*16kB (UE) 29*32kB (UME) 10*64kB (UME) 1*128kB (U) 2*256kB (UE) 1*512kB (E) 2*1024kB (ME) 2*2048kB (UE) 957*4096kB (M) = 3929480kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 0 hugepages_total=2 hugepages_free=2 hugepages_surp=0 hugepages_size=2048kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 1 hugepages_total=2 hugepages_free=2 hugepages_surp=0 hugepages_size=2048kB
46036 total pagecache pages
0 pages in swap cache
Free swap = 124996kB
Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly
393402 pages reserved
0 pages cma reserved
Mem-Info:
active_anon:10231 inactive_anon:489 isolated_anon:0
active_file:0 inactive_file:44779 isolated_file:0
unevictable:768 dirty:39 writeback:0
slab_reclaimable:20277 slab_unreclaimable:98076
mapped:7048 shmem:1257 pagetables:544
sec_pagetables:0 bounce:0
kernel_misc_reclaimable:0
free:1429090 free_pcp:8839 free_cma:0
Node 0 active_anon:40924kB inactive_anon:1956kB active_file:0kB inactive_file:179036kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:28192kB dirty:144kB writeback:0kB shmem:3492kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB kernel_stack:10548kB pagetables:2176kB sec_pagetables:0kB all_unreclaimable? no
Node 1 active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:12kB writeback:0kB shmem:1536kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB kernel_stack:16kB pagetables:0kB sec_pagetables:0kB all_unreclaimable? no
Node 0 DMA free:15360kB boost:0kB min:200kB low:248kB high:296kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15360kB mlocked:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 2613 2614 2614 2614
Node 0 DMA32 free:1771508kB boost:0kB min:35408kB low:44260kB high:53112kB reserved_highatomic:0KB active_anon:40880kB inactive_anon:1952kB active_file:0kB inactive_file:177980kB unevictable:1536kB writepending:140kB present:3129332kB managed:2680488kB mlocked:0kB bounce:0kB free_pcp:19972kB local_pcp:7916kB free_cma:0kB
lowmem_reserve[]: 0 0 1 1 1
Node 0 Normal free:12kB boost:0kB min:12kB low:12kB high:12kB reserved_highatomic:0KB active_anon:44kB inactive_anon:4kB active_file:0kB inactive_file:1056kB unevictable:0kB writepending:4kB present:1048576kB managed:1128kB mlocked:0kB bounce:0kB free_pcp:12kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 1 Normal free:3929480kB boost:0kB min:54480kB low:68100kB high:81720kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB unevictable:1536kB writepending:12kB present:4194304kB managed:4117620kB mlocked:0kB bounce:0kB free_pcp:15324kB local_pcp:6944kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15360kB
Node 0 DMA32: 143*4kB (UE) 1403*8kB (UE) 740*16kB (UME) 1*32kB (U) 2*64kB (ME) 2*128kB (UM) 2*256kB (UE) 2*512kB (ME) 3*1024kB (UME) 1*2048kB (M) 425*4096kB (M) = 1771508kB
Node 0 Normal: 1*4kB (M) 1*8kB (M) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 12kB
Node 1 Normal: 64*4kB (UME) 23*8kB (UME) 19*16kB (UE) 29*32kB (UME) 10*64kB (UME) 1*128kB (U) 2*256kB (UE) 1*512kB (E) 2*1024kB (ME) 2*2048kB (UE) 957*4096kB (M) = 3929480kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 0 hugepages_total=2 hugepages_free=2 hugepages_surp=0 hugepages_size=2048kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 1 hugepages_total=2 hugepages_free=2 hugepages_surp=0 hugepages_size=2048kB
46036 total pagecache pages
0 pages in swap cache
Free swap = 124996kB
Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly
393402 pages reserved
0 pages cma reserved
Mem-Info:
active_anon:10231 inactive_anon:489 isolated_anon:0
active_file:0 inactive_file:44779 isolated_file:0
unevictable:768 dirty:39 writeback:0
slab_reclaimable:20277 slab_unreclaimable:98076
mapped:7048 shmem:1257 pagetables:544
sec_pagetables:0 bounce:0
kernel_misc_reclaimable:0
free:1429090 free_pcp:8817 free_cma:0
Node 0 active_anon:40924kB inactive_anon:1956kB active_file:0kB inactive_file:179036kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:28192kB dirty:144kB writeback:0kB shmem:3492kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB kernel_stack:10548kB pagetables:2176kB sec_pagetables:0kB all_unreclaimable? no
Node 1 active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:12kB writeback:0kB shmem:1536kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB kernel_stack:16kB pagetables:0kB sec_pagetables:0kB all_unreclaimable? no
Node 0 DMA free:15360kB boost:0kB min:200kB low:248kB high:296kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15360kB mlocked:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 2613 2614 2614 2614
Node 0 DMA32 free:1771508kB boost:0kB min:35408kB low:44260kB high:53112kB reserved_highatomic:0KB active_anon:40880kB inactive_anon:1952kB active_file:0kB inactive_file:177980kB unevictable:1536kB writepending:140kB present:3129332kB managed:2680488kB mlocked:0kB bounce:0kB free_pcp:19932kB local_pcp:7876kB free_cma:0kB
lowmem_reserve[]: 0 0 1 1 1
Node 0 Normal free:12kB boost:0kB min:12kB low:12kB high:12kB reserved_highatomic:0KB active_anon:44kB inactive_anon:4kB active_file:0kB inactive_file:1056kB unevictable:0kB writepending:4kB present:1048576kB managed:1128kB mlocked:0kB bounce:0kB free_pcp:12kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 1 Normal free:3929480kB boost:0kB min:54480kB low:68100kB high:81720kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB unevictable:1536kB writepending:12kB present:4194304kB managed:4117620kB mlocked:0kB bounce:0kB free_pcp:15324kB local_pcp:6944kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15360kB
Node 0 DMA32: 143*4kB (UE) 1403*8kB (UE) 740*16kB (UME) 1*32kB (U) 2*64kB (ME) 2*128kB (UM) 2*256kB (UE) 2*512kB (ME) 3*1024kB (UME) 1*2048kB (M) 425*4096kB (M) = 1771508kB
Node 0 Normal: 1*4kB (M) 1*8kB (M) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 12kB
Node 1 Normal: 64*4kB (UME) 23*8kB (UME) 19*16kB (UE) 29*32kB (UME) 10*64kB (UME) 1*128kB (U) 2*256kB (UE) 1*512kB (E) 2*1024kB (ME) 2*2048kB (UE) 957*4096kB (M) = 3929480kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 0 hugepages_total=2 hugepages_free=2 hugepages_surp=0 hugepages_size=2048kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 1 hugepages_total=2 hugepages_free=2 hugepages_surp=0 hugepages_size=2048kB
46036 total pagecache pages
0 pages in swap cache
Free swap = 124996kB
Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly
393402 pages reserved
0 pages cma reserved
Mem-Info:
active_anon:10231 inactive_anon:489 isolated_anon:0
active_file:0 inactive_file:44779 isolated_file:0
unevictable:768 dirty:39 writeback:0
slab_reclaimable:20277 slab_unreclaimable:98076
mapped:7048 shmem:1257 pagetables:544
sec_pagetables:0 bounce:0
kernel_misc_reclaimable:0
free:1429090 free_pcp:8817 free_cma:0
Node 0 active_anon:40924kB inactive_anon:1956kB active_file:0kB inactive_file:179036kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:28192kB dirty:144kB writeback:0kB shmem:3492kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB kernel_stack:10548kB pagetables:2176kB sec_pagetables:0kB all_unreclaimable? no
Node 1 active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:12kB writeback:0kB shmem:1536kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB kernel_stack:16kB pagetables:0kB sec_pagetables:0kB all_unreclaimable? no
Node 0 DMA free:15360kB boost:0kB min:200kB low:248kB high:296kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15360kB mlocked:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 2613 2614 2614 2614
Node 0 DMA32 free:1771508kB boost:0kB min:35408kB low:44260kB high:53112kB reserved_highatomic:0KB active_anon:40880kB inactive_anon:1952kB active_file:0kB inactive_file:177980kB unevictable:1536kB writepending:140kB present:3129332kB managed:2680488kB mlocked:0kB bounce:0kB free_pcp:19932kB local_pcp:7876kB free_cma:0kB
lowmem_reserve[]: 0 0 1 1 1
Node 0 Normal free:12kB boost:0kB min:12kB low:12kB high:12kB reserved_highatomic:0KB active_anon:44kB inactive_anon:4kB active_file:0kB inactive_file:1056kB unevictable:0kB writepending:4kB present:1048576kB managed:1128kB mlocked:0kB bounce:0kB free_pcp:12kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 1 Normal free:3929480kB boost:0kB min:54480kB low:68100kB high:81720kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB unevictable:1536kB writepending:12kB present:4194304kB managed:4117620kB mlocked:0kB bounce:0kB free_pcp:15324kB local_pcp:6944kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15360kB
Node 0 DMA32: 143*4kB (UE) 1403*8kB (UE) 740*16kB (UME) 1*32kB (U) 2*64kB (ME) 2*128kB (UM) 2*256kB (UE) 2*512kB (ME) 3*1024kB (UME) 1*2048kB (M) 425*4096kB (M) = 1771508kB
Node 0 Normal: 1*4kB (M) 1*8kB (M) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 12kB
Node 1 Normal: 64*4kB (UME) 23*8kB (UME) 19*16kB (UE) 29*32kB (UME) 10*64kB (UME) 1*128kB (U) 2*256kB (UE) 1*512kB (E) 2*1024kB (ME) 2*2048kB (UE) 957*4096kB (M) = 3929480kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 0 hugepages_total=2 hugepages_free=2 hugepages_surp=0 hugepages_size=2048kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 1 hugepages_total=2 hugepages_free=2 hugepages_surp=0 hugepages_size=2048kB
46036 total pagecache pages
0 pages in swap cache
Free swap = 124996kB
Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly
393402 pages reserved
0 pages cma reserved
Mem-Info:
active_anon:10231 inactive_anon:489 isolated_anon:0
active_file:0 inactive_file:44779 isolated_file:0
unevictable:768 dirty:39 writeback:0
slab_reclaimable:20277 slab_unreclaimable:98101
mapped:7048 shmem:1257 pagetables:544
sec_pagetables:0 bounce:0
kernel_misc_reclaimable:0
free:1429090 free_pcp:8815 free_cma:0
Node 0 active_anon:40924kB inactive_anon:1956kB active_file:0kB inactive_file:179036kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:28192kB dirty:144kB writeback:0kB shmem:3492kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB kernel_stack:10548kB pagetables:2176kB sec_pagetables:0kB all_unreclaimable? no
Node 1 active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:12kB writeback:0kB shmem:1536kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB kernel_stack:16kB pagetables:0kB sec_pagetables:0kB all_unreclaimable? no
Node 0 DMA free:15360kB boost:0kB min:200kB low:248kB high:296kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15360kB mlocked:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 2613 2614 2614 2614
Node 0 DMA32 free:1771508kB boost:0kB min:35408kB low:44260kB high:53112kB reserved_highatomic:0KB active_anon:40880kB inactive_anon:1952kB active_file:0kB inactive_file:177980kB unevictable:1536kB writepending:140kB present:3129332kB managed:2680488kB mlocked:0kB bounce:0kB free_pcp:19924kB local_pcp:7876kB free_cma:0kB
lowmem_reserve[]: 0 0 1 1 1
Node 0 Normal free:12kB boost:0kB min:12kB low:12kB high:12kB reserved_highatomic:0KB active_anon:44kB inactive_anon:4kB active_file:0kB inactive_file:1056kB unevictable:0kB writepending:4kB present:1048576kB managed:1128kB mlocked:0kB bounce:0kB free_pcp:12kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 1 Normal free:3929480kB boost:0kB min:54480kB low:68100kB high:81720kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB unevictable:1536kB writepending:12kB present:4194304kB managed:4117620kB mlocked:0kB bounce:0kB free_pcp:15324kB local_pcp:6944kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15360kB
Node 0 DMA32: 143*4kB (UE) 1403*8kB (UE) 740*16kB (UME) 1*32kB (U) 2*64kB (ME) 2*128kB (UM) 2*256kB (UE) 2*512kB (ME) 3*1024kB (UME) 1*2048kB (M) 425*4096kB (M) = 1771508kB
Node 0 Normal: 1*4kB (M) 1*8kB (M) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 12kB
Node 1 Normal: 64*4kB (UME) 23*8kB (UME) 19*16kB (UE) 29*32kB (UME) 10*64kB (UME) 1*128kB (U) 2*256kB (UE) 1*512kB (E) 2*1024kB (ME) 2*2048kB (UE) 957*4096kB (M) = 3929480kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 0 hugepages_total=2 hugepages_free=2 hugepages_surp=0 hugepages_size=2048kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 1 hugepages_total=2 hugepages_free=2 hugepages_surp=0 hugepages_size=2048kB
46036 total pagecache pages
0 pages in swap cache
Free swap = 124996kB
Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly
393402 pages reserved
0 pages cma reserved

---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.

syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.

If the bug is already fixed, let syzbot know by replying with:
#syz fix: exact-commit-title

If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.

If you want to overwrite bug's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)

If the bug is a duplicate of another bug, reply with:
#syz dup: exact-subject-of-another-report

If you want to undo deduplication, reply with:
#syz undup

Hillf Danton

unread,

Aug 29, 2023, 9:19:27 AM8/29/23

to syzbot, linux-...@vger.kernel.org, syzkall...@googlegroups.com

On Tue, 29 Aug 2023 02:38:05 -0700

> HEAD commit: 2dde18cd1d8f Linux 6.5
> git tree: upstream

> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=162d9beba80000

Check if batadv_nc_worker() is a CPU hog.

#syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master

--- x/net/batman-adv/network-coding.c
+++ y/net/batman-adv/network-coding.c
@@ -397,6 +397,7 @@ static void batadv_nc_purge_orig_hash(st
struct hlist_head *head;
struct batadv_orig_node *orig_node;
u32 i;
+ int loop = 0;

if (!hash)
return;
@@ -406,9 +407,14 @@ static void batadv_nc_purge_orig_hash(st
head = &hash->table[i];

rcu_read_lock();
- hlist_for_each_entry_rcu(orig_node, head, hash_entry)
+ hlist_for_each_entry_rcu(orig_node, head, hash_entry) {
batadv_nc_purge_orig(bat_priv, orig_node,
batadv_nc_to_purge_nc_node);
+ if (++loop > 20) {
+ rcu_read_unlock();
+ return;
+ }
+ }
rcu_read_unlock();
}
}
@@ -433,6 +439,7 @@ static void batadv_nc_purge_paths(struct
struct batadv_nc_path *nc_path;
spinlock_t *lock; /* Protects lists in hash */
u32 i;
+ int loop = 0;

for (i = 0; i < hash->size; i++) {
head = &hash->table[i];
@@ -441,6 +448,10 @@ static void batadv_nc_purge_paths(struct
/* For each nc_path in this bin */
spin_lock_bh(lock);
hlist_for_each_entry_safe(nc_path, node_tmp, head, hash_entry) {
+ if (++loop > 20) {
+ spin_unlock_bh(lock);
+ return;
+ }
/* if an helper function has been passed as parameter,
* ask it if the entry has to be purged or not
*/
@@ -675,6 +686,7 @@ batadv_nc_process_nc_paths(struct batadv
struct batadv_nc_path *nc_path;
bool ret;
int i;
+ int loop = 0;

if (!hash)
return;
@@ -686,6 +698,10 @@ batadv_nc_process_nc_paths(struct batadv
/* Loop coding paths */
rcu_read_lock();
hlist_for_each_entry_rcu(nc_path, head, hash_entry) {
+ if (++loop > 20) {
+ rcu_read_unlock();
+ return;
+ }
/* Loop packets */
spin_lock_bh(&nc_path->packet_list_lock);
list_for_each_entry_safe(nc_packet, nc_packet_tmp,
--

syzbot

unread,

Aug 29, 2023, 9:54:31 AM8/29/23

to hda...@sina.com, linux-...@vger.kernel.org, syzkall...@googlegroups.com

Hello,

syzbot has tested the proposed patch but the reproducer is still triggering an issue:
INFO: rcu detected stall in smp_call_function

Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly

393409 pages reserved

0 pages cma reserved
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:

rcu: (detected by 1, t=10529 jiffies, g=14213, q=569 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10516 (4294963831-4294953315), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10516 jiffies! g14213 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0

rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R
running task stack:28320 pid:16 ppid:2 flags:0x00004000
Call Trace:
<TASK>

context_switch kernel/sched/core.c:5382 [inline]
__schedule+0xee1/0x59f0 kernel/sched/core.c:6695
schedule+0xe7/0x1b0 kernel/sched/core.c:6771
schedule_timeout+0x157/0x2c0 kernel/time/timer.c:2167
rcu_gp_fqs_loop+0x1ec/0xa50 kernel/rcu/tree.c:1613
rcu_gp_kthread+0x249/0x380 kernel/rcu/tree.c:1812

kthread+0x33a/0x430 kernel/kthread.c:389
ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
</TASK>
rcu: Stack dump where RCU GP kthread last ran:

Sending NMI from CPU 1 to CPUs 0:
0*64kB
NMI backtrace for cpu 0
CPU: 0 PID: 2799 Comm: kworker/u4:8 Not tainted 6.5.0-syzkaller-01207-g1c59d383390f-dirty #0

Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023

Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x31/0x70 kernel/kcov.c:207
Code: 6d 4a 7d 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 00 ba 03 00 a9 00 01 ff 00 74 0e 85 c9 74 35 8b 82 04 16 00 00 <85> c0 74 2b 8b 82 e0 15 00 00 83 f8 02 75 20 48 8b 8a e8 15 00 00
RSP: 0018:ffffc90000006f38 EFLAGS: 00000006
RAX: 0000000000000000 RBX: ffffffff8a6d598c RCX: 0000000000000100
RDX: ffff888028c18000 RSI: ffffffff8a25a4f8 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 00000000001516a8 R12: ffffc90000007040
R13: ffffffff8a6d598b R14: 0000000000000001 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000

CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

CR2: 00007fffc2078e90 CR3: 000000000c776000 CR4: 00000000003506f0

DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:

<NMI>
</NMI>
<IRQ>
format_decode+0x2b8/0xba0 lib/vsprintf.c:2557
vsnprintf+0x13d/0x1870 lib/vsprintf.c:2769
sprintf+0xcd/0x100 lib/vsprintf.c:3021
print_time kernel/printk/printk.c:1327 [inline]
info_print_prefix+0x258/0x350 kernel/printk/printk.c:1353
record_print_text+0x143/0x410 kernel/printk/printk.c:1402
printk_get_next_message+0x2ca/0x7c0 kernel/printk/printk.c:2809
console_emit_next_record kernel/printk/printk.c:2844 [inline]
console_flush_all+0x39e/0xf50 kernel/printk/printk.c:2933
console_unlock+0xc6/0x1f0 kernel/printk/printk.c:3007
vprintk_emit+0x1c5/0x640 kernel/printk/printk.c:2307
vprintk+0x89/0xa0 kernel/printk/printk_safe.c:50
_printk+0xc8/0x100 kernel/printk/printk.c:2328
__show_free_areas+0x16d8/0x21b0 mm/show_mem.c:384
__show_mem+0x34/0x150 mm/show_mem.c:409
k_spec drivers/tty/vt/keyboard.c:667 [inline]
k_spec+0xea/0x140 drivers/tty/vt/keyboard.c:656
kbd_keycode drivers/tty/vt/keyboard.c:1524 [inline]
kbd_event+0xcc8/0x17c0 drivers/tty/vt/keyboard.c:1543
input_to_handler+0x382/0x4c0 drivers/input/input.c:132
input_pass_values.part.0+0x536/0x7a0 drivers/input/input.c:161
input_pass_values drivers/input/input.c:148 [inline]
input_event_dispose+0x5ee/0x770 drivers/input/input.c:378
input_handle_event+0x11c/0xd80 drivers/input/input.c:406
input_repeat_key+0x251/0x340 drivers/input/input.c:2263

call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700
expire_timers kernel/time/timer.c:1751 [inline]
__run_timers+0x764/0xb10 kernel/time/timer.c:2022
run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2035
__do_softirq+0x218/0x965 kernel/softirq.c:553
invoke_softirq kernel/softirq.c:427 [inline]
__irq_exit_rcu kernel/softirq.c:632 [inline]
irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644
sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1109
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645

RIP: 0010:csd_lock_wait kernel/smp.c:300 [inline]
RIP: 0010:smp_call_function_many_cond+0x4db/0x1570 kernel/smp.c:844
Code: 4d 48 b8 00 00 00 00 00 fc ff df 4d 89 fc 4c 89 fd 49 c1 ec 03 83 e5 07 49 01 c4 83 c5 03 e8 9c 62 0b 00 f3 90 41 0f b6 04 24 <40> 38 c5 7c 08 84 c0 0f 85 3c 0e 00 00 8b 43 08 31 ff 83 e0 01 41
RSP: 0018:ffffc9000b67f938 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff8880b99417c0 RCX: 0000000000000000
RDX: ffff888028c18000 RSI: ffffffff817b0cf4 RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffed10173282f9
R13: 0000000000000001 R14: ffff8880b983d600 R15: ffff8880b99417c8
on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1012
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:1998 [inline]
text_poke_bp_batch+0x250/0x780 arch/x86/kernel/alternative.c:2208
text_poke_flush arch/x86/kernel/alternative.c:2399 [inline]
text_poke_flush arch/x86/kernel/alternative.c:2396 [inline]
text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:2406
arch_jump_label_transform_apply+0x17/0x30 arch/x86/kernel/jump_label.c:146
jump_label_update+0x32e/0x410 kernel/jump_label.c:829
static_key_enable_cpuslocked+0x1b5/0x270 kernel/jump_label.c:205
static_key_enable+0x1a/0x20 kernel/jump_label.c:218
toggle_allocation_gate mm/kfence/core.c:831 [inline]
toggle_allocation_gate+0xf4/0x250 mm/kfence/core.c:823

process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2600
worker_thread+0x687/0x1110 kernel/workqueue.c:2751
kthread+0x33a/0x430 kernel/kthread.c:389
ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
</TASK>

0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15360kB

Node 0 DMA32: 573*4kB (UME) 1158*8kB (UME) 493*16kB (UE) 1*32kB (U) 2*64kB (E) 3*128kB (UME) 3*256kB (UME) 3*512kB (ME) 2*1024kB (ME) 2*2048kB (ME) 415*4096kB (M) = 1728276kB
Node 0 Normal: 1*4kB (M) 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 4kB
Node 1 Normal: 192*4kB (UME) 49*8kB (UME) 23*16kB (UME) 57*32kB (UME) 26*64kB (UME) 6*128kB (UME) 2*256kB (ME) 2*512kB (ME) 2*1024kB (UE) 2*2048kB (UE) 952*4096kB (M) = 3912856kB

Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 0 hugepages_total=2 hugepages_free=2 hugepages_surp=0 hugepages_size=2048kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 1 hugepages_total=2 hugepages_free=2 hugepages_surp=0 hugepages_size=2048kB

53178 total pagecache pages

0 pages in swap cache
Free swap = 124996kB
Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly

393409 pages reserved

0 pages cma reserved
Mem-Info:

active_anon:10781 inactive_anon:508 isolated_anon:0
active_file:0 inactive_file:51904 isolated_file:0
unevictable:768 dirty:0 writeback:2
slab_reclaimable:20894 slab_unreclaimable:97667
mapped:6996 shmem:1274 pagetables:611

sec_pagetables:0 bounce:0
kernel_misc_reclaimable:0

free:1414124 free_pcp:11968 free_cma:0
Node 0 active_anon:43124kB inactive_anon:2032kB active_file:0kB inactive_file:207540kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:27984kB dirty:0kB writeback:8kB shmem:3560kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB kernel_stack:10992kB pagetables:2444kB sec_pagetables:0kB all_unreclaimable? no
Node 1 active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:76kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:1536kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB kernel_stack:16kB pagetables:0kB sec_pagetables:0kB all_unreclaimable? no

Node 0 DMA free:15360kB boost:0kB min:200kB low:248kB high:296kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15360kB mlocked:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 2613 2614 2614 2614

Node 0 DMA32 free:1728276kB boost:0kB min:35408kB low:44260kB high:53112kB reserved_highatomic:0KB active_anon:43084kB inactive_anon:2028kB active_file:0kB inactive_file:206472kB unevictable:1536kB writepending:8kB present:3129332kB managed:2680460kB mlocked:0kB bounce:0kB free_pcp:27156kB local_pcp:17808kB free_cma:0kB

lowmem_reserve[]: 0 0 1 1 1

Node 0 Normal free:4kB boost:0kB min:12kB low:12kB high:12kB reserved_highatomic:0KB active_anon:40kB inactive_anon:4kB active_file:0kB inactive_file:1068kB unevictable:0kB writepending:0kB present:1048576kB managed:1128kB mlocked:0kB bounce:0kB free_pcp:12kB local_pcp:0kB free_cma:0kB

lowmem_reserve[]: 0 0 0 0 0

Node 1 Normal free:3912856kB boost:0kB min:54480kB low:68100kB high:81720kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:76kB unevictable:1536kB writepending:0kB present:4194304kB managed:4117620kB mlocked:0kB bounce:0kB free_pcp:20704kB local_pcp:12576kB free_cma:0kB

lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15360kB

53178 total pagecache pages

0 pages in swap cache
Free swap = 124996kB
Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly

393409 pages reserved

0 pages cma reserved
Mem-Info:

sec_pagetables:0 bounce:0
kernel_misc_reclaimable:0

free:1414124 free_pcp:11967 free_cma:0
Node 0 active_anon:43124kB inactive_anon:2032kB active_file:0kB inactive_file:207540kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:27984kB dirty:0kB writeback:8kB shmem:3560kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB kernel_stack:10992kB pagetables:2444kB sec_pagetables:0kB all_unreclaimable? no
Node 1 active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:76kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:1536kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB kernel_stack:16kB pagetables:0kB sec_pagetables:0kB all_unreclaimable? no

lowmem_reserve[]: 0 0 1 1 1

lowmem_reserve[]: 0 0 0 0 0

lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15360kB

53178 total pagecache pages

0 pages in swap cache
Free swap = 124996kB
Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly

393409 pages reserved

0 pages cma reserved
Mem-Info:

sec_pagetables:0 bounce:0
kernel_misc_reclaimable:0

free:1414124 free_pcp:11966 free_cma:0
Node 0 active_anon:43124kB inactive_anon:2032kB active_file:0kB inactive_file:207540kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:27984kB dirty:0kB writeback:8kB shmem:3560kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB kernel_stack:10992kB pagetables:2444kB sec_pagetables:0kB all_unreclaimable? no
Node 1 active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:76kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:1536kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB kernel_stack:16kB pagetables:0kB sec_pagetables:0kB all_unreclaimable? no

lowmem_reserve[]: 0 0 1 1 1

lowmem_reserve[]: 0 0 0 0 0

lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15360kB

53178 total pagecache pages

0 pages in swap cache
Free swap = 124996kB
Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly

393409 pages reserved

0 pages cma reserved
Mem-Info:

sec_pagetables:0 bounce:0
kernel_misc_reclaimable:0

lowmem_reserve[]: 0 0 1 1 1

lowmem_reserve[]: 0 0 0 0 0

lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15360kB

53178 total pagecache pages

0 pages in swap cache
Free swap = 124996kB
Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly

393409 pages reserved

0 pages cma reserved
Mem-Info:

sec_pagetables:0 bounce:0
kernel_misc_reclaimable:0

lowmem_reserve[]: 0 0 1 1 1

lowmem_reserve[]: 0 0 0 0 0

lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15360kB

53178 total pagecache pages

0 pages in swap cache
Free swap = 124996kB
Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly

393409 pages reserved

0 pages cma reserved
Mem-Info:

sec_pagetables:0 bounce:0
kernel_misc_reclaimable:0

lowmem_reserve[]: 0 0 1 1 1

lowmem_reserve[]: 0 0 0 0 0

lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15360kB

53178 total pagecache pages

0 pages in swap cache
Free swap = 124996kB
Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly

393409 pages reserved

0 pages cma reserved
Mem-Info:

sec_pagetables:0 bounce:0
kernel_misc_reclaimable:0

lowmem_reserve[]: 0 0 1 1 1

lowmem_reserve[]: 0 0 0 0 0

lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15360kB

53178 total pagecache pages

0 pages in swap cache
Free swap = 124996kB
Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly

393409 pages reserved

0 pages cma reserved
Mem-Info:

sec_pagetables:0 bounce:0
kernel_misc_reclaimable:0

lowmem_reserve[]: 0 0 1 1 1

lowmem_reserve[]: 0 0 0 0 0

lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15360kB

53178 total pagecache pages

0 pages in swap cache
Free swap = 124996kB
Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly

393409 pages reserved

0 pages cma reserved
Mem-Info:

sec_pagetables:0 bounce:0
kernel_misc_reclaimable:0

lowmem_reserve[]: 0 0 1 1 1

lowmem_reserve[]: 0 0 0 0 0

lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15360kB

53178 total pagecache pages

0 pages in swap cache
Free swap = 124996kB
Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly

393409 pages reserved

0 pages cma reserved
Mem-Info:

sec_pagetables:0 bounce:0
kernel_misc_reclaimable:0

lowmem_reserve[]: 0 0 1 1 1

lowmem_reserve[]: 0 0 0 0 0

lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15360kB

53178 total pagecache pages

0 pages in swap cache
Free swap = 124996kB
Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly

393409 pages reserved

0 pages cma reserved
Mem-Info:

sec_pagetables:0 bounce:0
kernel_misc_reclaimable:0

lowmem_reserve[]: 0 0 1 1 1

lowmem_reserve[]: 0 0 0 0 0

lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15360kB

53178 total pagecache pages

0 pages in swap cache
Free swap = 124996kB
Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly

393409 pages reserved

0 pages cma reserved
Mem-Info:

sec_pagetables:0 bounce:0
kernel_misc_reclaimable:0

free:1414124 free_pcp:11961 free_cma:0
Node 0 active_anon:43124kB inactive_anon:2032kB active_file:0kB inactive_file:207540kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:27984kB dirty:0kB writeback:8kB shmem:3560kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB kernel_stack:10992kB pagetables:2444kB sec_pagetables:0kB all_unreclaimable? no
Node 1 active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:76kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:1536kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB kernel_stack:16kB pagetables:0kB sec_pagetables:0kB all_unreclaimable? no

lowmem_reserve[]: 0 0 1 1 1

lowmem_reserve[]: 0 0 0 0 0

lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15360kB

53178 total pagecache pages

0 pages in swap cache
Free swap = 124996kB
Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly

393409 pages reserved

0 pages cma reserved
Mem-Info:

sec_pagetables:0 bounce:0
kernel_misc_reclaimable:0

lowmem_reserve[]: 0 0 1 1 1

lowmem_reserve[]: 0 0 0 0 0

lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15360kB

53178 total pagecache pages

0 pages in swap cache
Free swap = 124996kB
Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly

393409 pages reserved

0 pages cma reserved
Mem-Info:

sec_pagetables:0 bounce:0
kernel_misc_reclaimable:0

lowmem_reserve[]: 0 0 1 1 1

lowmem_reserve[]: 0 0 0 0 0

lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15360kB

53178 total pagecache pages

0 pages in swap cache
Free swap = 124996kB
Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly

393409 pages reserved

0 pages cma reserved
Mem-Info:

sec_pagetables:0 bounce:0
kernel_misc_reclaimable:0

lowmem_reserve[]: 0 0 1 1 1

lowmem_reserve[]: 0 0 0 0 0

lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15360kB

53178 total pagecache pages

0 pages in swap cache
Free swap = 124996kB
Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly

393409 pages reserved

0 pages cma reserved
Mem-Info:

sec_pagetables:0 bounce:0
kernel_misc_reclaimable:0

lowmem_reserve[]: 0 0 1 1 1

lowmem_reserve[]: 0 0 0 0 0

lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15360kB

53178 total pagecache pages

0 pages in swap cache
Free swap = 124996kB
Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly

393409 pages reserved

0 pages cma reserved
Mem-Info:

sec_pagetables:0 bounce:0
kernel_misc_reclaimable:0

lowmem_reserve[]: 0 0 1 1 1

lowmem_reserve[]: 0 0 0 0 0

lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15360kB

53178 total pagecache pages

0 pages in swap cache
Free swap = 124996kB
Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly

393409 pages reserved

0 pages cma reserved
Mem-Info:

active_anon:10781 inactive_anon:508 isolated_anon:0
active_file:0 inactive_file:51904 isolated_

Tested on:

commit: 1c59d383 Merge tag 'linux-kselftest-nolibc-6.6-rc1' of..
git tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
console output: https://syzkaller.appspot.com/x/log.txt?x=138a248fa80000
kernel config: https://syzkaller.appspot.com/x/.config?x=9678e210dd5e4a5f

dashboard link: https://syzkaller.appspot.com/bug?extid=1a11c39caf29450eac9f
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40

patch: https://syzkaller.appspot.com/x/patch.diff?x=1655c0c0680000

Hillf Danton

unread,

Aug 30, 2023, 6:55:32 AM8/30/23

to syzbot, linux-...@vger.kernel.org, syzkall...@googlegroups.com

On Tue, 29 Aug 2023 02:38:05 -0700

> HEAD commit: 2dde18cd1d8f Linux 6.5
> git tree: upstream

--- x/drivers/input/input.c
+++ y/drivers/input/input.c
@@ -149,6 +149,8 @@ static void input_pass_values(struct inp

if (!count)
return;
+ if (count > 5)
+ count = 5;

rcu_read_lock();

--

syzbot

unread,

Aug 30, 2023, 9:50:38 AM8/30/23

to hda...@sina.com, linux-...@vger.kernel.org, syzkall...@googlegroups.com

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-and-tested-by: syzbot+1a11c3...@syzkaller.appspotmail.com

Tested on:

commit: 6c1b980a Merge tag 'dma-mapping-6.6-2023-08-29' of git..

git tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master

console output: https://syzkaller.appspot.com/x/log.txt?x=17b35e67a80000
kernel config: https://syzkaller.appspot.com/x/.config?x=2212484c18930a61

dashboard link: https://syzkaller.appspot.com/bug?extid=1a11c39caf29450eac9f
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40

patch: https://syzkaller.appspot.com/x/patch.diff?x=12d88950680000

Note: testing is done by a robot and is best-effort only.

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