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INFO: rcu detected stall in drop_mountpoint

Status: upstream: reported on 2023/02/19 02:27
Reported-by: syzbot+a2f9efa6dedc9db54286@syzkaller.appspotmail.com
First crash: 432d, last: 432d

Sample crash report:
 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
CPU: 1 PID: 28790 Comm: syz-executor.1 Not tainted 4.19.211-syzkaller #0
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P1970
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 warn_alloc.cold+0x7b/0x18f mm/page_alloc.c:3457
 __alloc_pages_slowpath mm/page_alloc.c:4317 [inline]
 __alloc_pages_nodemask+0x232f/0x2890 mm/page_alloc.c:4419
rcu: 	(detected by 0, t=10589 jiffies, g=109741, q=605)
kswapd1         R  running task    28232  1970      2 0x80000000
Call Trace:
 context_switch kernel/sched/core.c:2828 [inline]
 __schedule+0x887/0x2040 kernel/sched/core.c:3517
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0xa4/0x8a0 mm/slab.c:2682
 fallback_alloc+0x213/0x2e0 mm/slab.c:3224
 slab_alloc_node mm/slab.c:3332 [inline]
 kmem_cache_alloc_node+0xe3/0x3b0 mm/slab.c:3647
 __alloc_skb+0x71/0x560 net/core/skbuff.c:193
 preempt_schedule_irq+0xb0/0x140 kernel/sched/core.c:3744
 __netdev_alloc_skb+0x76/0x460 net/core/skbuff.c:407
 retint_kernel+0x1b/0x2d
RIP: 0010:__read_once_size include/linux/compiler.h:263 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:69 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x1c/0x50 kernel/kcov.c:101
 netdev_alloc_skb include/linux/skbuff.h:2680 [inline]
 dev_alloc_skb include/linux/skbuff.h:2693 [inline]
 send_hsr_supervision_frame+0x107/0xf70 net/hsr/hsr_device.c:265
Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 34 24 65 48 8b 04 25 c0 df 01 00 65 8b 15 cc 59 9f 7e 81 e2 00 01 1f 00 75 2b <8b> 90 60 13 00 00 83 fa 02 75 20 48 8b 88 68 13 00 00 8b 80 64 13
RSP: 0018:ffff8880b0d3f9b8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
 hsr_announce+0x125/0x3a0 net/hsr/hsr_device.c:350
RAX: ffff8880b0d44000 RBX: ffff8880a46d60c0 RCX: ffffffff81a33db3
 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338
RDX: 0000000000000000 RSI: ffffffff8189c311 RDI: ffff8880b0d44370
RBP: ffff8880b59f68c0 R08: ffff8880a304eac0 R09: ffff8880b59f68c0
R10: 0000000000000007 R11: 0000000000000000 R12: ffff8880a304eac0
R13: ffff8880b0d3fb00 R14: ffff8880b0d3fb04 R15: ffff8880b0d3fb18
 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375
 __run_timers kernel/time/timer.c:1696 [inline]
 run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709
 rcu_lock_acquire include/linux/rcupdate.h:242 [inline]
 rcu_read_lock include/linux/rcupdate.h:627 [inline]
 list_lru_count_one+0x41/0x360 mm/list_lru.c:189
 list_lru_shrink_count include/linux/list_lru.h:123 [inline]
 super_cache_count+0x14f/0x2e0 fs/super.c:144
 __do_softirq+0x265/0x980 kernel/softirq.c:292
 do_shrink_slab+0x10b/0xa40 mm/vmscan.c:464
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x215/0x260 kernel/softirq.c:412
 shrink_slab+0x16f/0x550 mm/vmscan.c:693
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
 shrink_node.isra.0+0x2d3/0x1300 mm/vmscan.c:2748
 </IRQ>
RIP: 0010:lock_acquire+0x1f5/0x3c0 kernel/locking/lockdep.c:3912
Code: e8 03 80 3c 10 00 0f 85 b7 01 00 00 48 83 3d 09 2e a6 08 00 0f 84 2a 01 00 00 48 8b 7c 24 08 57 9d 0f 1f 44 00 00 48 83 c4 18 <5b> 5d 41 5c 41 5d 41 5e 41 5f c3 65 8b 05 89 2c b6 7e 83 f8 07 0f
RSP: 0018:ffff888092b3f828 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
 kswapd_shrink_node mm/vmscan.c:3467 [inline]
 balance_pgdat mm/vmscan.c:3577 [inline]
 kswapd+0xb8d/0x1840 mm/vmscan.c:3801
RAX: 1ffffffff13e3051 RBX: ffff8880a635c080 RCX: 000000000000798e
RDX: dffffc0000000000 RSI: 0000000018afff57 RDI: 0000000000000286
RBP: ffff8880ade9f4b8 R08: ffffffff8cd541b0 R09: 0000000000000001
R10: ffff8880a635c930 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:144
 spin_lock include/linux/spinlock.h:329 [inline]
 lockref_put_or_lock+0x14/0x80 lib/lockref.c:171
 fast_dput fs/dcache.c:715 [inline]
 dput+0x4a1/0x640 fs/dcache.c:833
 drop_mountpoint+0x3b/0xc0 fs/namespace.c:172
 kthread+0x33f/0x460 kernel/kthread.c:259
 pin_kill+0x174/0x7b0 fs/fs_pin.c:50
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
kswapd1         R  running task    28232  1970      2 0x80000000
Call Trace:
 context_switch kernel/sched/core.c:2828 [inline]
 __schedule+0x887/0x2040 kernel/sched/core.c:3517
 group_pin_kill+0x60/0x1b0 fs/fs_pin.c:101
 preempt_schedule_irq+0xb0/0x140 kernel/sched/core.c:3744
 namespace_unlock fs/namespace.c:1365 [inline]
 drop_collected_mounts+0x182/0x1a0 fs/namespace.c:1808
 retint_kernel+0x1b/0x2d
RIP: 0010:__read_once_size include/linux/compiler.h:263 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:69 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x1c/0x50 kernel/kcov.c:101
Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 34 24 65 48 8b 04 25 c0 df 01 00 65 8b 15 cc 59 9f 7e 81 e2 00 01 1f 00 75 2b <8b> 90 60 13 00 00 83 fa 02 75 20 48 8b 88 68 13 00 00 8b 80 64 13
RSP: 0018:ffff8880b0d3f9b8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
 put_mnt_ns fs/namespace.c:3271 [inline]
 put_mnt_ns+0x5f/0x80 fs/namespace.c:3267
RAX: ffff8880b0d44000 RBX: ffff8880a46d60c0 RCX: ffffffff81a33db3
 free_nsproxy+0x41/0x220 kernel/nsproxy.c:176
RDX: 0000000000000000 RSI: ffffffff8189c311 RDI: ffff8880b0d44370
RBP: ffff8880b59f68c0 R08: ffff8880a304eac0 R09: ffff8880b59f68c0
 switch_task_namespaces+0xaa/0xc0 kernel/nsproxy.c:229
R10: 0000000000000007 R11: 0000000000000000 R12: ffff8880a304eac0
 do_exit+0xbee/0x2be0 kernel/exit.c:869
R13: ffff8880b0d3fb00 R14: ffff8880b0d3fb04 R15: ffff8880b0d3fb18
 rcu_lock_acquire include/linux/rcupdate.h:242 [inline]
 rcu_read_lock include/linux/rcupdate.h:627 [inline]
 list_lru_count_one+0x41/0x360 mm/list_lru.c:189
 list_lru_shrink_count include/linux/list_lru.h:123 [inline]
 super_cache_count+0x14f/0x2e0 fs/super.c:144
 do_group_exit+0x125/0x310 kernel/exit.c:967
 get_signal+0x3f2/0x1f70 kernel/signal.c:2589
 do_shrink_slab+0x10b/0xa40 mm/vmscan.c:464
 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799
 shrink_slab+0x16f/0x550 mm/vmscan.c:693
 shrink_node.isra.0+0x2d3/0x1300 mm/vmscan.c:2748
 kswapd_shrink_node mm/vmscan.c:3467 [inline]
 balance_pgdat mm/vmscan.c:3577 [inline]
 kswapd+0xb8d/0x1840 mm/vmscan.c:3801
 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163
 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
 do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f12f4e5b0f9
Code: Bad RIP value.
RSP: 002b:00007f12f33cd168 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: 0000000000000008 RBX: 00007f12f4f7af80 RCX: 00007f12f4e5b0f9
RDX: 0000000000000088 RSI: 0000000000000002 RDI: 0000000000000002
RBP: 00007f12f4eb6ae9 R08: 0000000000000000 R09: 0000000000000000
 kthread+0x33f/0x460 kernel/kthread.c:259
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd3d62b6cf R14: 00007f12f33cd300 R15: 0000000000022000
warn_alloc_show_mem: 1 callbacks suppressed
Mem-Info:
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
active_anon:227594 inactive_anon:7276 isolated_anon:0
 active_file:5827 inactive_file:11141 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:17019 slab_unreclaimable:1396282
 mapped:13232 shmem:8987 pagetables:935 bounce:0
 free:10976 free_pcp:545 free_cma:0
rcu: rcu_preempt kthread starved for 10300 jiffies! g109741 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
Node 0 active_anon:909848kB inactive_anon:29104kB active_file:23288kB inactive_file:44520kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:52928kB dirty:0kB writeback:0kB shmem:35948kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 157696kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
rcu: RCU grace-period kthread stack dump:
Node 1 active_anon:528kB inactive_anon:0kB active_file:20kB inactive_file:44kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:0kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
Node 0 DMA free:10840kB min:204kB low:252kB high:300kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
rcu_preempt     R  running task    29016    10      2 0x80000000
lowmem_reserve[]: 0 2693 2695 2695 2695
Call Trace:
Node 0 DMA32 free:13212kB min:35996kB low:44992kB high:53988kB active_anon:909848kB inactive_anon:29104kB active_file:23288kB inactive_file:44520kB unevictable:0kB writepending:0kB present:3129332kB managed:2763452kB mlocked:0kB kernel_stack:7840kB pagetables:3740kB bounce:0kB free_pcp:1232kB local_pcp:1016kB free_cma:0kB
 context_switch kernel/sched/core.c:2828 [inline]
 __schedule+0x887/0x2040 kernel/sched/core.c:3517
lowmem_reserve[]: 0 0 1 1 1
Node 0 Normal free:8kB min:24kB low:28kB high:32kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:1048576kB managed:2000kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
 schedule+0x8d/0x1b0 kernel/sched/core.c:3561
Node 1 Normal free:19844kB min:53876kB low:67344kB high:80812kB active_anon:528kB inactive_anon:0kB active_file:20kB inactive_file:44kB unevictable:0kB writepending:0kB present:4194304kB managed:4128248kB mlocked:0kB kernel_stack:224kB pagetables:0kB bounce:0kB free_pcp:948kB local_pcp:668kB free_cma:0kB
 schedule_timeout+0x4cf/0xfe0 kernel/time/timer.c:1818
lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 1*8kB (U) 1*16kB (U) 0*32kB 1*64kB (U) 0*128kB 0*256kB 1*512kB (U) 0*1024kB 1*2048kB (M) 2*4096kB (M) = 10840kB
Node 0 DMA32: 417*4kB (UME) 321*8kB (UME) 227*16kB (UME) 103*32kB (UME) 32*64kB (UME) 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 13212kB
Node 0 Normal: 0*4kB 1*8kB (U) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 8kB
Node 1 Normal: 3*4kB (UME) 1*8kB (M) 1*16kB (M) 3*32kB (UME) 2*64kB (ME) 3*128kB (UME) 1*256kB (U) 1*512kB (M) 2*1024kB (M) 0*2048kB 4*4096kB (M) = 19844kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
 rcu_gp_kthread+0xdad/0x21c0 kernel/rcu/tree.c:2202
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
25942 total pagecache pages
0 pages in swap cache
Swap cache stats: add 0, delete 0, find 0/0
Free swap  = 0kB
Total swap = 0kB
2097051 pages RAM
0 pages HighMem/MovableOnly
 kthread+0x33f/0x460 kernel/kthread.c:259
369649 pages reserved
0 pages cma reserved
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
syz-executor.1: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
aoe: skb alloc failure
syz-executor.1 cpuset=/ mems_allowed=0-1
kworker/0:2: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
CPU: 1 PID: 28790 Comm: syz-executor.1 Not tainted 4.19.211-syzkaller #0
kworker/0:2 cpuset=/ mems_allowed=0-1
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 warn_alloc.cold+0x7b/0x18f mm/page_alloc.c:3457
 __alloc_pages_slowpath mm/page_alloc.c:4317 [inline]
 __alloc_pages_nodemask+0x232f/0x2890 mm/page_alloc.c:4419
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0xa4/0x8a0 mm/slab.c:2682
 fallback_alloc+0x213/0x2e0 mm/slab.c:3224
 slab_alloc_node mm/slab.c:3332 [inline]
 kmem_cache_alloc_node+0xe3/0x3b0 mm/slab.c:3647
 __alloc_skb+0x71/0x560 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:995 [inline]
 ndisc_alloc_skb+0x134/0x320 net/ipv6/ndisc.c:403
 ndisc_send_rs+0x33a/0x690 net/ipv6/ndisc.c:669
 addrconf_rs_timer+0x384/0x6a0 net/ipv6/addrconf.c:3835
 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338
 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375
 __run_timers kernel/time/timer.c:1696 [inline]
 run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709
 __do_softirq+0x265/0x980 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x215/0x260 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
 </IRQ>
RIP: 0010:lock_acquire+0x1f5/0x3c0 kernel/locking/lockdep.c:3912
Code: e8 03 80 3c 10 00 0f 85 b7 01 00 00 48 83 3d 09 2e a6 08 00 0f 84 2a 01 00 00 48 8b 7c 24 08 57 9d 0f 1f 44 00 00 48 83 c4 18 <5b> 5d 41 5c 41 5d 41 5e 41 5f c3 65 8b 05 89 2c b6 7e 83 f8 07 0f
RSP: 0018:ffff888092b3f828 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff13e3051 RBX: ffff8880a635c080 RCX: 000000000000798e
RDX: dffffc0000000000 RSI: 0000000018afff57 RDI: 0000000000000286
RBP: ffff8880ade9f4b8 R08: ffffffff8cd541b0 R09: 0000000000000001
R10: ffff8880a635c930 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:144
 spin_lock include/linux/spinlock.h:329 [inline]
 lockref_put_or_lock+0x14/0x80 lib/lockref.c:171
 fast_dput fs/dcache.c:715 [inline]
 dput+0x4a1/0x640 fs/dcache.c:833
 drop_mountpoint+0x3b/0xc0 fs/namespace.c:172
 pin_kill+0x174/0x7b0 fs/fs_pin.c:50
 group_pin_kill+0x60/0x1b0 fs/fs_pin.c:101
 namespace_unlock fs/namespace.c:1365 [inline]
 drop_collected_mounts+0x182/0x1a0 fs/namespace.c:1808
 put_mnt_ns fs/namespace.c:3271 [inline]
 put_mnt_ns+0x5f/0x80 fs/namespace.c:3267
 free_nsproxy+0x41/0x220 kernel/nsproxy.c:176
 switch_task_namespaces+0xaa/0xc0 kernel/nsproxy.c:229
 do_exit+0xbee/0x2be0 kernel/exit.c:869
 do_group_exit+0x125/0x310 kernel/exit.c:967
 get_signal+0x3f2/0x1f70 kernel/signal.c:2589
 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799
 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163
 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
 do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f12f4e5b0f9
Code: Bad RIP value.
RSP: 002b:00007f12f33cd168 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: 0000000000000008 RBX: 00007f12f4f7af80 RCX: 00007f12f4e5b0f9
RDX: 0000000000000088 RSI: 0000000000000002 RDI: 0000000000000002
RBP: 00007f12f4eb6ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd3d62b6cf R14: 00007f12f33cd300 R15: 0000000000022000
Mem-Info:
CPU: 0 PID: 26933 Comm: kworker/0:2 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
active_anon:227594 inactive_anon:7276 isolated_anon:0
 active_file:5827 inactive_file:11141 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:17019 slab_unreclaimable:1396282
 mapped:13232 shmem:8987 pagetables:935 bounce:0
 free:10976 free_pcp:545 free_cma:0
Workqueue: events defense_work_handler
Node 0 active_anon:909848kB inactive_anon:29104kB active_file:23288kB inactive_file:44520kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:52928kB dirty:0kB writeback:0kB shmem:35948kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 157696kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
Call Trace:
Node 1 active_anon:528kB inactive_anon:0kB active_file:20kB inactive_file:44kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:0kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
 <IRQ>
Node 0 DMA free:10840kB min:204kB low:252kB high:300kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
lowmem_reserve[]: 0 2693 2695 2695 2695
 warn_alloc.cold+0x7b/0x18f mm/page_alloc.c:3457
Node 0 DMA32 free:13212kB min:35996kB low:44992kB high:53988kB active_anon:909848kB inactive_anon:29104kB active_file:23288kB inactive_file:44520kB unevictable:0kB writepending:0kB present:3129332kB managed:2763452kB mlocked:0kB kernel_stack:7840kB pagetables:3740kB bounce:0kB free_pcp:1232kB local_pcp:1016kB free_cma:0kB
lowmem_reserve[]: 0 0 1 1 1
Node 0 Normal free:8kB min:24kB low:28kB high:32kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:1048576kB managed:2000kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 1 Normal free:19844kB min:53876kB low:67344kB high:80812kB active_anon:528kB inactive_anon:0kB active_file:20kB inactive_file:44kB unevictable:0kB writepending:0kB present:4194304kB managed:4128248kB mlocked:0kB kernel_stack:224kB pagetables:0kB bounce:0kB free_pcp:948kB local_pcp:668kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
 __alloc_pages_slowpath mm/page_alloc.c:4317 [inline]
 __alloc_pages_nodemask+0x232f/0x2890 mm/page_alloc.c:4419
Node 0 DMA: 0*4kB 1*8kB (U) 1*16kB (U) 0*32kB 1*64kB (U) 0*128kB 0*256kB 1*512kB (U) 0*1024kB 1*2048kB (M) 2*4096kB (M) = 10840kB
Node 0 DMA32: 417*4kB (UME) 321*8kB (UME) 227*16kB (UME) 103*32kB (UME) 32*64kB (UME) 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 13212kB
Node 0 Normal: 0*4kB 1*8kB (U) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 8kB
Node 1 Normal: 3*4kB (UME) 1*8kB (M) 1*16kB (M) 3*32kB (UME) 2*64kB (ME) 3*128kB (UME) 1*256kB (U) 1*512kB (M) 2*1024kB (M) 0*2048kB 4*4096kB (M) = 19844kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0xa4/0x8a0 mm/slab.c:2682
25942 total pagecache pages
 fallback_alloc+0x213/0x2e0 mm/slab.c:3224
0 pages in swap cache
 slab_alloc_node mm/slab.c:3332 [inline]
 kmem_cache_alloc_node+0xe3/0x3b0 mm/slab.c:3647
Swap cache stats: add 0, delete 0, find 0/0
 __alloc_skb+0x71/0x560 net/core/skbuff.c:193
Free swap  = 0kB
 alloc_skb include/linux/skbuff.h:995 [inline]
 new_skb+0x24/0x1c0 drivers/block/aoe/aoecmd.c:67
Total swap = 0kB
 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline]
 aoecmd_cfg+0x191/0x5e0 drivers/block/aoe/aoecmd.c:1374
2097051 pages RAM
0 pages HighMem/MovableOnly
369649 pages reserved
0 pages cma reserved
 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338
ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb
syz-executor.1: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
syz-executor.1 cpuset=/ mems_allowed=0-1
 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375
 __run_timers kernel/time/timer.c:1696 [inline]
 run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709
 __do_softirq+0x265/0x980 kernel/softirq.c:292
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1092
 </IRQ>
 do_softirq.part.0+0x160/0x1c0 kernel/softirq.c:336
 do_softirq kernel/softirq.c:328 [inline]
 __local_bh_enable_ip+0x20e/0x270 kernel/softirq.c:189
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 update_defense_level+0xa6a/0x10f0 net/netfilter/ipvs/ip_vs_ctl.c:215
 defense_work_handler+0x25/0xe0 net/netfilter/ipvs/ip_vs_ctl.c:229
 process_one_work+0x864/0x1570 kernel/workqueue.c:2153
 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
CPU: 1 PID: 28790 Comm: syz-executor.1 Not tainted 4.19.211-syzkaller #0
aoe: skb alloc failure
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 warn_alloc.cold+0x7b/0x18f mm/page_alloc.c:3457
kworker/0:2: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
kworker/0:2 cpuset=/ mems_allowed=0-1
 __alloc_pages_slowpath mm/page_alloc.c:4317 [inline]
 __alloc_pages_nodemask+0x232f/0x2890 mm/page_alloc.c:4419
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0xa4/0x8a0 mm/slab.c:2682
 fallback_alloc+0x213/0x2e0 mm/slab.c:3224
 slab_alloc_node mm/slab.c:3332 [inline]
 kmem_cache_alloc_node+0xe3/0x3b0 mm/slab.c:3647
 __alloc_skb+0x71/0x560 net/core/skbuff.c:193
 __netdev_alloc_skb+0x76/0x460 net/core/skbuff.c:407
 netdev_alloc_skb include/linux/skbuff.h:2680 [inline]
 dev_alloc_skb include/linux/skbuff.h:2693 [inline]
 send_hsr_supervision_frame+0x107/0xf70 net/hsr/hsr_device.c:265
 hsr_announce+0x125/0x3a0 net/hsr/hsr_device.c:350
 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338
 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375
 __run_timers kernel/time/timer.c:1696 [inline]
 run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709
 __do_softirq+0x265/0x980 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x215/0x260 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
 </IRQ>
RIP: 0010:lock_acquire+0x1f5/0x3c0 kernel/locking/lockdep.c:3912
Code: e8 03 80 3c 10 00 0f 85 b7 01 00 00 48 83 3d 09 2e a6 08 00 0f 84 2a 01 00 00 48 8b 7c 24 08 57 9d 0f 1f 44 00 00 48 83 c4 18 <5b> 5d 41 5c 41 5d 41 5e 41 5f c3 65 8b 05 89 2c b6 7e 83 f8 07 0f
RSP: 0018:ffff888092b3f828 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff13e3051 RBX: ffff8880a635c080 RCX: 000000000000798e
RDX: dffffc0000000000 RSI: 0000000018afff57 RDI: 0000000000000286
RBP: ffff8880ade9f4b8 R08: ffffffff8cd541b0 R09: 0000000000000001
R10: ffff8880a635c930 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:144
 spin_lock include/linux/spinlock.h:329 [inline]
 lockref_put_or_lock+0x14/0x80 lib/lockref.c:171
 fast_dput fs/dcache.c:715 [inline]
 dput+0x4a1/0x640 fs/dcache.c:833
 drop_mountpoint+0x3b/0xc0 fs/namespace.c:172
 pin_kill+0x174/0x7b0 fs/fs_pin.c:50
 group_pin_kill+0x60/0x1b0 fs/fs_pin.c:101
 namespace_unlock fs/namespace.c:1365 [inline]
 drop_collected_mounts+0x182/0x1a0 fs/namespace.c:1808
 put_mnt_ns fs/namespace.c:3271 [inline]
 put_mnt_ns+0x5f/0x80 fs/namespace.c:3267
 free_nsproxy+0x41/0x220 kernel/nsproxy.c:176
 switch_task_namespaces+0xaa/0xc0 kernel/nsproxy.c:229
 do_exit+0xbee/0x2be0 kernel/exit.c:869
 do_group_exit+0x125/0x310 kernel/exit.c:967
 get_signal+0x3f2/0x1f70 kernel/signal.c:2589
 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799
 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163
 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
 do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f12f4e5b0f9
Code: Bad RIP value.
RSP: 002b:00007f12f33cd168 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: 0000000000000008 RBX: 00007f12f4f7af80 RCX: 00007f12f4e5b0f9
RDX: 0000000000000088 RSI: 0000000000000002 RDI: 0000000000000002
RBP: 00007f12f4eb6ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd3d62b6cf R14: 00007f12f33cd300 R15: 0000000000022000
warn_alloc_show_mem: 1 callbacks suppressed
CPU: 0 PID: 26933 Comm: kworker/0:2 Not tainted 4.19.211-syzkaller #0
Mem-Info:
active_anon:227594 inactive_anon:7276 isolated_anon:0
 active_file:5827 inactive_file:11141 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:17019 slab_unreclaimable:1396282
 mapped:13232 shmem:8987 pagetables:935 bounce:0
 free:10976 free_pcp:545 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Node 0 active_anon:909848kB inactive_anon:29104kB active_file:23288kB inactive_file:44520kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:52928kB dirty:0kB writeback:0kB shmem:35948kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 157696kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
Workqueue: events defense_work_handler
Node 1 active_anon:528kB inactive_anon:0kB active_file:20kB inactive_file:44kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:0kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
Call Trace:
Node 0 DMA free:10840kB min:204kB low:252kB high:300kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
 <IRQ>
lowmem_reserve[]: 0 2693 2695 2695 2695
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
Node 0 DMA32 free:13212kB min:35996kB low:44992kB high:53988kB active_anon:909848kB inactive_anon:29104kB active_file:23288kB inactive_file:44520kB unevictable:0kB writepending:0kB present:3129332kB managed:2763452kB mlocked:0kB kernel_stack:7840kB pagetables:3740kB bounce:0kB free_pcp:1232kB local_pcp:1016kB free_cma:0kB
 warn_alloc.cold+0x7b/0x18f mm/page_alloc.c:3457
lowmem_reserve[]: 0 0 1 1 1
Node 0 Normal free:8kB min:24kB low:28kB high:32kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:1048576kB managed:2000kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 1 Normal free:19844kB min:53876kB low:67344kB high:80812kB active_anon:528kB inactive_anon:0kB active_file:20kB inactive_file:44kB unevictable:0kB writepending:0kB present:4194304kB managed:4128248kB mlocked:0kB kernel_stack:224kB pagetables:0kB bounce:0kB free_pcp:948kB local_pcp:668kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 1*8kB (U) 1*16kB (U) 0*32kB 1*64kB (U) 0*128kB 0*256kB 1*512kB (U) 0*1024kB 1*2048kB (M) 2*4096kB (M) = 10840kB
Node 0 DMA32: 417*4kB (UME) 321*8kB (UME) 227*16kB (UME) 103*32kB (UME) 32*64kB (UME) 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 13212kB
 __alloc_pages_slowpath mm/page_alloc.c:4317 [inline]
 __alloc_pages_nodemask+0x232f/0x2890 mm/page_alloc.c:4419
Node 0 Normal: 0*4kB 1*8kB (U) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 8kB
Node 1 Normal: 3*4kB (UME) 1*8kB (M) 1*16kB (M) 3*32kB (UME) 2*64kB (ME) 3*128kB (UME) 1*256kB (U) 1*512kB (M) 2*1024kB (M) 0*2048kB 4*4096kB (M) = 19844kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
25942 total pagecache pages
0 pages in swap cache
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0xa4/0x8a0 mm/slab.c:2682
Swap cache stats: add 0, delete 0, find 0/0
 fallback_alloc+0x213/0x2e0 mm/slab.c:3224
Free swap  = 0kB
 slab_alloc_node mm/slab.c:3332 [inline]
 kmem_cache_alloc_node+0xe3/0x3b0 mm/slab.c:3647
Total swap = 0kB
 __alloc_skb+0x71/0x560 net/core/skbuff.c:193
2097051 pages RAM
 alloc_skb include/linux/skbuff.h:995 [inline]
 new_skb+0x24/0x1c0 drivers/block/aoe/aoecmd.c:67
0 pages HighMem/MovableOnly
 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline]
 aoecmd_cfg+0x191/0x5e0 drivers/block/aoe/aoecmd.c:1374
369649 pages reserved
0 pages cma reserved
syz-executor.1: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338
syz-executor.1 cpuset=/ mems_allowed=0-1
 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375
 __run_timers kernel/time/timer.c:1696 [inline]
 run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709
 __do_softirq+0x265/0x980 kernel/softirq.c:292
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1092
 </IRQ>
 do_softirq.part.0+0x160/0x1c0 kernel/softirq.c:336
 do_softirq kernel/softirq.c:328 [inline]
 __local_bh_enable_ip+0x20e/0x270 kernel/softirq.c:189
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 update_defense_level+0xa6a/0x10f0 net/netfilter/ipvs/ip_vs_ctl.c:215
 defense_work_handler+0x25/0xe0 net/netfilter/ipvs/ip_vs_ctl.c:229
 process_one_work+0x864/0x1570 kernel/workqueue.c:2153
 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
CPU: 1 PID: 28790 Comm: syz-executor.1 Not tainted 4.19.211-syzkaller #0
aoe: skb alloc failure
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 warn_alloc.cold+0x7b/0x18f mm/page_alloc.c:3457
kworker/0:2: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
kworker/0:2 cpuset=/ mems_allowed=0-1
 __alloc_pages_slowpath mm/page_alloc.c:4317 [inline]
 __alloc_pages_nodemask+0x232f/0x2890 mm/page_alloc.c:4419
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0xa4/0x8a0 mm/slab.c:2682
 fallback_alloc+0x213/0x2e0 mm/slab.c:3224
 slab_alloc_node mm/slab.c:3332 [inline]
 kmem_cache_alloc_node+0xe3/0x3b0 mm/slab.c:3647
 __alloc_skb+0x71/0x560 net/core/skbuff.c:193
 __netdev_alloc_skb+0x76/0x460 net/core/skbuff.c:407
 netdev_alloc_skb include/linux/skbuff.h:2680 [inline]
 dev_alloc_skb include/linux/skbuff.h:2693 [inline]
 send_hsr_supervision_frame+0x107/0xf70 net/hsr/hsr_device.c:265
 hsr_announce+0x125/0x3a0 net/hsr/hsr_device.c:350
 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338
 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375
 __run_timers kernel/time/timer.c:1696 [inline]
 run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709
 __do_softirq+0x265/0x980 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x215/0x260 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
 </IRQ>
RIP: 0010:lock_acquire+0x1f5/0x3c0 kernel/locking/lockdep.c:3912
Code: e8 03 80 3c 10 00 0f 85 b7 01 00 00 48 83 3d 09 2e a6 08 00 0f 84 2a 01 00 00 48 8b 7c 24 08 57 9d 0f 1f 44 00 00 48 83 c4 18 <5b> 5d 41 5c 41 5d 41 5e 41 5f c3 65 8b 05 89 2c b6 7e 83 f8 07 0f
RSP: 0018:ffff888092b3f828 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff13e3051 RBX: ffff8880a635c080 RCX: 000000000000798e
RDX: dffffc0000000000 RSI: 0000000018afff57 RDI: 0000000000000286
RBP: ffff8880ade9f4b8 R08: ffffffff8cd541b0 R09: 0000000000000001
R10: ffff8880a635c930 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:144
 spin_lock include/linux/spinlock.h:329 [inline]
 lockref_put_or_lock+0x14/0x80 lib/lockref.c:171
 fast_dput fs/dcache.c:715 [inline]
 dput+0x4a1/0x640 fs/dcache.c:833
 drop_mountpoint+0x3b/0xc0 fs/namespace.c:172
 pin_kill+0x174/0x7b0 fs/fs_pin.c:50
 group_pin_kill+0x60/0x1b0 fs/fs_pin.c:101
 namespace_unlock fs/namespace.c:1365 [inline]
 drop_collected_mounts+0x182/0x1a0 fs/namespace.c:1808
 put_mnt_ns fs/namespace.c:3271 [inline]
 put_mnt_ns+0x5f/0x80 fs/namespace.c:3267
 free_nsproxy+0x41/0x220 kernel/nsproxy.c:176
 switch_task_namespaces+0xaa/0xc0 kernel/nsproxy.c:229
 do_exit+0xbee/0x2be0 kernel/exit.c:869
 do_group_exit+0x125/0x310 kernel/exit.c:967
 get_signal+0x3f2/0x1f70 kernel/signal.c:2589
 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799
 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163
 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
 do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f12f4e5b0f9
Code: Bad RIP value.
RSP: 002b:00007f12f33cd168 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: 0000000000000008 RBX: 00007f12f4f7af80 RCX: 00007f12f4e5b0f9
RDX: 0000000000000088 RSI: 0000000000000002 RDI: 0000000000000002
RBP: 00007f12f4eb6ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd3d62b6cf R14: 00007f12f33cd300 R15: 0000000000022000
warn_alloc_show_mem: 1 callbacks suppressed
CPU: 0 PID: 26933 Comm: kworker/0:2 Not tainted 4.19.211-syzkaller #0
Mem-Info:
active_anon:227594 inactive_anon:7276 isolated_anon:0
 active_file:5827 inactive_file:11141 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:17019 slab_unreclaimable:1396282
 mapped:13232 shmem:8987 pagetables:935 bounce:0
 free:10976 free_pcp:545 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Node 0 active_anon:909848kB inactive_anon:29104kB active_file:23288kB inactive_file:44520kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:52928kB dirty:0kB writeback:0kB shmem:35948kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 157696kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
Workqueue: events defense_work_handler
Node 1 active_anon:528kB inactive_anon:0kB active_file:20kB inactive_file:44kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:0kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
Call Trace:
Node 0 DMA free:10840kB min:204kB low:252kB high:300kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
 <IRQ>
lowmem_reserve[]: 0 2693 2695 2695 2695
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
Node 0 DMA32 free:13212kB min:35996kB low:44992kB high:53988kB active_anon:909848kB inactive_anon:29104kB active_file:23288kB inactive_file:44520kB unevictable:0kB writepending:0kB present:3129332kB managed:2763452kB mlocked:0kB kernel_stack:7840kB pagetables:3740kB bounce:0kB free_pcp:1232kB local_pcp:1016kB free_cma:0kB
 warn_alloc.cold+0x7b/0x18f mm/page_alloc.c:3457
lowmem_reserve[]: 0 0 1 1 1
Node 0 Normal free:8kB min:24kB low:28kB high:32kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:1048576kB managed:2000kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 1 Normal free:19844kB min:53876kB low:67344kB high:80812kB active_anon:528kB inactive_anon:0kB active_file:20kB inactive_file:44kB unevictable:0kB writepending:0kB present:4194304kB managed:4128248kB mlocked:0kB kernel_stack:224kB pagetables:0kB bounce:0kB free_pcp:948kB local_pcp:668kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
 __alloc_pages_slowpath mm/page_alloc.c:4317 [inline]
 __alloc_pages_nodemask+0x232f/0x2890 mm/page_alloc.c:4419
Node 0 DMA: 0*4kB 1*8kB (U) 1*16kB (U) 0*32kB 1*64kB (U) 0*128kB 0*256kB 1*512kB (U) 0*1024kB 1*2048kB (M) 2*4096kB (M) = 10840kB
Node 0 DMA32: 417*4kB (UME) 321*8kB (UME) 227*16kB (UME) 103*32kB (UME) 32*64kB (UME) 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 13212kB
Node 0 Normal: 0*4kB 1*8kB (U) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 8kB
Node 1 Normal: 3*4kB (UME) 1*8kB (M) 1*16kB (M) 3*32kB (UME) 2*64kB (ME) 3*128kB (UME) 1*256kB (U) 1*512kB (M) 2*1024kB (M) 0*2048kB 4*4096kB (M) = 19844kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0xa4/0x8a0 mm/slab.c:2682
25942 total pagecache pages
 fallback_alloc+0x213/0x2e0 mm/slab.c:3224
0 pages in swap cache
 slab_alloc_node mm/slab.c:3332 [inline]
 kmem_cache_alloc_node+0xe3/0x3b0 mm/slab.c:3647
Swap cache stats: add 0, delete 0, find 0/0
 __alloc_skb+0x71/0x560 net/core/skbuff.c:193
Free swap  = 0kB
 alloc_skb include/linux/skbuff.h:995 [inline]
 new_skb+0x24/0x1c0 drivers/block/aoe/aoecmd.c:67
Total swap = 0kB
 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline]
 aoecmd_cfg+0x191/0x5e0 drivers/block/aoe/aoecmd.c:1374
2097051 pages RAM
0 pages HighMem/MovableOnly
369649 pages reserved
 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338
0 pages cma reserved
syz-executor.1: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
syz-executor.1 cpuset=/ mems_allowed=0-1
 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375
 __run_timers kernel/time/timer.c:1696 [inline]
 run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709
 __do_softirq+0x265/0x980 kernel/softirq.c:292
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1092
 </IRQ>
 do_softirq.part.0+0x160/0x1c0 kernel/softirq.c:336
 do_softirq kernel/softirq.c:328 [inline]
 __local_bh_enable_ip+0x20e/0x270 kernel/softirq.c:189
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 update_defense_level+0xa6a/0x10f0 net/netfilter/ipvs/ip_vs_ctl.c:215
 defense_work_handler+0x25/0xe0 net/netfilter/ipvs/ip_vs_ctl.c:229
 process_one_work+0x864/0x1570 kernel/workqueue.c:2153
 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
CPU: 1 PID: 28790 Comm: syz-executor.1 Not tainted 4.19.211-syzkaller #0
aoe: skb alloc failure
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
kworker/0:2: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
Call Trace:
kworker/0:2 cpuset=/ mems_allowed=0-1
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 warn_alloc.cold+0x7b/0x18f mm/page_alloc.c:3457
 __alloc_pages_slowpath mm/page_alloc.c:4317 [inline]
 __alloc_pages_nodemask+0x232f/0x2890 mm/page_alloc.c:4419
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0xa4/0x8a0 mm/slab.c:2682
 fallback_alloc+0x213/0x2e0 mm/slab.c:3224
 slab_alloc_node mm/slab.c:3332 [inline]
 kmem_cache_alloc_node+0xe3/0x3b0 mm/slab.c:3647
 __alloc_skb+0x71/0x560 net/core/skbuff.c:193
 __netdev_alloc_skb+0x76/0x460 net/core/skbuff.c:407
 netdev_alloc_skb include/linux/skbuff.h:2680 [inline]
 dev_alloc_skb include/linux/skbuff.h:2693 [inline]
 send_hsr_supervision_frame+0x107/0xf70 net/hsr/hsr_device.c:265
 hsr_announce+0x125/0x3a0 net/hsr/hsr_device.c:350
 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338
 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375
 __run_timers kernel/time/timer.c:1696 [inline]
 run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709
 __do_softirq+0x265/0x980 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x215/0x260 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
 </IRQ>
RIP: 0010:lock_acquire+0x1f5/0x3c0 kernel/locking/lockdep.c:3912
Code: e8 03 80 3c 10 00 0f 85 b7 01 00 00 48 83 3d 09 2e a6 08 00 0f 84 2a 01 00 00 48 8b 7c 24 08 57 9d 0f 1f 44 00 00 48 83 c4 18 <5b> 5d 41 5c 41 5d 41 5e 41 5f c3 65 8b 05 89 2c b6 7e 83 f8 07 0f
RSP: 0018:ffff888092b3f828 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff13e3051 RBX: ffff8880a635c080 RCX: 000000000000798e
RDX: dffffc0000000000 RSI: 0000000018afff57 RDI: 0000000000000286
RBP: ffff8880ade9f4b8 R08: ffffffff8cd541b0 R09: 0000000000000001
R10: ffff8880a635c930 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:144
 spin_lock include/linux/spinlock.h:329 [inline]
 lockref_put_or_lock+0x14/0x80 lib/lockref.c:171
 fast_dput fs/dcache.c:715 [inline]
 dput+0x4a1/0x640 fs/dcache.c:833
 drop_mountpoint+0x3b/0xc0 fs/namespace.c:172
 pin_kill+0x174/0x7b0 fs/fs_pin.c:50
 group_pin_kill+0x60/0x1b0 fs/fs_pin.c:101
 namespace_unlock fs/namespace.c:1365 [inline]
 drop_collected_mounts+0x182/0x1a0 fs/namespace.c:1808
 put_mnt_ns fs/namespace.c:3271 [inline]
 put_mnt_ns+0x5f/0x80 fs/namespace.c:3267
 free_nsproxy+0x41/0x220 kernel/nsproxy.c:176
 switch_task_namespaces+0xaa/0xc0 kernel/nsproxy.c:229
 do_exit+0xbee/0x2be0 kernel/exit.c:869
 do_group_exit+0x125/0x310 kernel/exit.c:967
 get_signal+0x3f2/0x1f70 kernel/signal.c:2589
 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799
 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163
 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
 do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f12f4e5b0f9
Code: Bad RIP value.
RSP: 002b:00007f12f33cd168 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: 0000000000000008 RBX: 00007f12f4f7af80 RCX: 00007f12f4e5b0f9
RDX: 0000000000000088 RSI: 0000000000000002 RDI: 0000000000000002
RBP: 00007f12f4eb6ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd3d62b6cf R14: 00007f12f33cd300 R15: 0000000000022000
warn_alloc_show_mem: 1 callbacks suppressed
CPU: 0 PID: 26933 Comm: kworker/0:2 Not tainted 4.19.211-syzkaller #0
Mem-Info:
active_anon:227594 inactive_anon:7276 isolated_anon:0
 active_file:5827 inactive_file:11141 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:17019 slab_unreclaimable:1396282
 mapped:13232 shmem:8987 pagetables:935 bounce:0
 free:10976 free_pcp:545 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Node 0 active_anon:909848kB inactive_anon:29104kB active_file:23288kB inactive_file:44520kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:52928kB dirty:0kB writeback:0kB shmem:35948kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 157696kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
Workqueue: events defense_work_handler
Node 1 active_anon:528kB inactive_anon:0kB active_file:20kB inactive_file:44kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:0kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
Call Trace:
Node 0 DMA free:10840kB min:204kB low:252kB high:300kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
 <IRQ>
lowmem_reserve[]: 0 2693 2695 2695 2695
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
Node 0 DMA32 free:13212kB min:35996kB low:44992kB high:53988kB active_anon:909848kB inactive_anon:29104kB active_file:23288kB inactive_file:44520kB unevictable:0kB writepending:0kB present:3129332kB managed:2763452kB mlocked:0kB kernel_stack:7840kB pagetables:3740kB bounce:0kB free_pcp:1232kB local_pcp:1016kB free_cma:0kB
 warn_alloc.cold+0x7b/0x18f mm/page_alloc.c:3457
lowmem_reserve[]: 0 0 1 1 1
Node 0 Normal free:8kB min:24kB low:28kB high:32kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:1048576kB managed:2000kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 1 Normal free:19844kB min:53876kB low:67344kB high:80812kB active_anon:528kB inactive_anon:0kB active_file:20kB inactive_file:44kB unevictable:0kB writepending:0kB present:4194304kB managed:4128248kB mlocked:0kB kernel_stack:224kB pagetables:0kB bounce:0kB free_pcp:948kB local_pcp:668kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 1*8kB (U) 1*16kB (U) 0*32kB 1*64kB (U) 0*128kB 0*256kB 1*512kB (U) 0*1024kB 1*2048kB (M) 2*4096kB (M) = 10840kB
 __alloc_pages_slowpath mm/page_alloc.c:4317 [inline]
 __alloc_pages_nodemask+0x232f/0x2890 mm/page_alloc.c:4419
Node 0 DMA32: 417*4kB (UME) 321*8kB (UME) 227*16kB (UME) 103*32kB (UME) 32*64kB (UME) 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 13212kB
Node 0 Normal: 0*4kB 1*8kB (U) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 8kB
Node 1 Normal: 3*4kB (UME) 1*8kB (M) 1*16kB (M) 3*32kB (UME) 2*64kB (ME) 3*128kB (UME) 1*256kB (U) 1*512kB (M) 2*1024kB (M) 0*2048kB 4*4096kB (M) = 19844kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
25942 total pagecache pages
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0xa4/0x8a0 mm/slab.c:2682
0 pages in swap cache
 fallback_alloc+0x213/0x2e0 mm/slab.c:3224
Swap cache stats: add 0, delete 0, find 0/0
 slab_alloc_node mm/slab.c:3332 [inline]
 kmem_cache_alloc_node+0xe3/0x3b0 mm/slab.c:3647
Free swap  = 0kB
 __alloc_skb+0x71/0x560 net/core/skbuff.c:193
Total swap = 0kB
 alloc_skb include/linux/skbuff.h:995 [inline]
 new_skb+0x24/0x1c0 drivers/block/aoe/aoecmd.c:67
2097051 pages RAM
 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline]
 aoecmd_cfg+0x191/0x5e0 drivers/block/aoe/aoecmd.c:1374
0 pages HighMem/MovableOnly
369649 pages reserved
0 pages cma reserved
 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338
syz-executor.1: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
syz-executor.1 cpuset=/ mems_allowed=0-1
 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375
 __run_timers kernel/time/timer.c:1696 [inline]
 run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709
 __do_softirq+0x265/0x980 kernel/softirq.c:292
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1092
 </IRQ>
 do_softirq.part.0+0x160/0x1c0 kernel/softirq.c:336
 do_softirq kernel/softirq.c:328 [inline]
 __local_bh_enable_ip+0x20e/0x270 kernel/softirq.c:189
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 update_defense_level+0xa6a/0x10f0 net/netfilter/ipvs/ip_vs_ctl.c:215
 defense_work_handler+0x25/0xe0 net/netfilter/ipvs/ip_vs_ctl.c:229
 process_one_work+0x864/0x1570 kernel/workqueue.c:2153
 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
CPU: 1 PID: 28790 Comm: syz-executor.1 Not tainted 4.19.211-syzkaller #0
aoe: skb alloc failure
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
kworker/0:2: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
Call Trace:
kworker/0:2 cpuset=/ mems_allowed=0-1
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 warn_alloc.cold+0x7b/0x18f mm/page_alloc.c:3457
 __alloc_pages_slowpath mm/page_alloc.c:4317 [inline]
 __alloc_pages_nodemask+0x232f/0x2890 mm/page_alloc.c:4419
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0xa4/0x8a0 mm/slab.c:2682
 fallback_alloc+0x213/0x2e0 mm/slab.c:3224
 slab_alloc_node mm/slab.c:3332 [inline]
 kmem_cache_alloc_node+0xe3/0x3b0 mm/slab.c:3647
 __alloc_skb+0x71/0x560 net/core/skbuff.c:193
 __netdev_alloc_skb+0x76/0x460 net/core/skbuff.c:407
 netdev_alloc_skb include/linux/skbuff.h:2680 [inline]
 dev_alloc_skb include/linux/skbuff.h:2693 [inline]
 send_hsr_supervision_frame+0x107/0xf70 net/hsr/hsr_device.c:265
 hsr_announce+0x125/0x3a0 net/hsr/hsr_device.c:350
 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338
 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375
 __run_timers kernel/time/timer.c:1696 [inline]
 run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709
 __do_softirq+0x265/0x980 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x215/0x260 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
 </IRQ>
RIP: 0010:lock_acquire+0x1f5/0x3c0 kernel/locking/lockdep.c:3912
Code: e8 03 80 3c 10 00 0f 85 b7 01 00 00 48 83 3d 09 2e a6 08 00 0f 84 2a 01 00 00 48 8b 7c 24 08 57 9d 0f 1f 44 00 00 48 83 c4 18 <5b> 5d 41 5c 41 5d 41 5e 41 5f c3 65 8b 05 89 2c b6 7e 83 f8 07 0f
RSP: 0018:ffff888092b3f828 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff13e3051 RBX: ffff8880a635c080 RCX: 000000000000798e
RDX: dffffc0000000000 RSI: 0000000018afff57 RDI: 0000000000000286
RBP: ffff8880ade9f4b8 R08: ffffffff8cd541b0 R09: 0000000000000001
R10: ffff8880a635c930 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:144
 spin_lock include/linux/spinlock.h:329 [inline]
 lockref_put_or_lock+0x14/0x80 lib/lockref.c:171
 fast_dput fs/dcache.c:715 [inline]
 dput+0x4a1/0x640 fs/dcache.c:833
 drop_mountpoint+0x3b/0xc0 fs/namespace.c:172
 pin_kill+0x174/0x7b0 fs/fs_pin.c:50
 group_pin_kill+0x60/0x1b0 fs/fs_pin.c:101
 namespace_unlock fs/namespace.c:1365 [inline]
 drop_collected_mounts+0x182/0x1a0 fs/namespace.c:1808
 put_mnt_ns fs/namespace.c:3271 [inline]
 put_mnt_ns+0x5f/0x80 fs/namespace.c:3267
 free_nsproxy+0x41/0x220 kernel/nsproxy.c:176
 switch_task_namespaces+0xaa/0xc0 kernel/nsproxy.c:229
 do_exit+0xbee/0x2be0 kernel/exit.c:869
 do_group_exit+0x125/0x310 kernel/exit.c:967
 get_signal+0x3f2/0x1f70 kernel/signal.c:2589
 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799
 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163
 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
 do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f12f4e5b0f9
Code: Bad RIP value.
RSP: 002b:00007f12f33cd168 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: 0000000000000008 RBX: 00007f12f4f7af80 RCX: 00007f12f4e5b0f9
RDX: 0000000000000088 RSI: 0000000000000002 RDI: 0000000000000002
RBP: 00007f12f4eb6ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd3d62b6cf R14: 00007f12f33cd300 R15: 0000000000022000
warn_alloc_show_mem: 1 callbacks suppressed
CPU: 0 PID: 26933 Comm: kworker/0:2 Not tainted 4.19.211-syzkaller #0
Mem-Info:
active_anon:227594 inactive_anon:7276 isolated_anon:0
 active_file:5827 inactive_file:11141 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:17019 slab_unreclaimable:1396282
 mapped:13232 shmem:8987 pagetables:935 bounce:0
 free:10976 free_pcp:545 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Node 0 active_anon:909848kB inactive_anon:29104kB active_file:23288kB inactive_file:44520kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:52928kB dirty:0kB writeback:0kB shmem:35948kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 157696kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
Workqueue: events defense_work_handler
Node 1 active_anon:528kB inactive_anon:0kB active_file:20kB inactive_file:44kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:0kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
Call Trace:
Node 0 DMA free:10840kB min:204kB low:252kB high:300kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
 <IRQ>
lowmem_reserve[]: 0 2693 2695 2695 2695
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
Node 0 DMA32 free:13212kB min:35996kB low:44992kB high:53988kB active_anon:909848kB inactive_anon:29104kB active_file:23288kB inactive_file:44520kB unevictable:0kB writepending:0kB present:3129332kB managed:2763452kB mlocked:0kB kernel_stack:7840kB pagetables:3740kB bounce:0kB free_pcp:1232kB local_pcp:1016kB free_cma:0kB
 warn_alloc.cold+0x7b/0x18f mm/page_alloc.c:3457
lowmem_reserve[]: 0 0 1 1 1
Node 0 Normal free:8kB min:24kB low:28kB high:32kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:1048576kB managed:2000kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 1 Normal free:19844kB min:53876kB low:67344kB high:80812kB active_anon:528kB inactive_anon:0kB active_file:20kB inactive_file:44kB unevictable:0kB writepending:0kB present:4194304kB managed:4128248kB mlocked:0kB kernel_stack:224kB pagetables:0kB bounce:0kB free_pcp:948kB local_pcp:668kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 1*8kB (U) 1*16kB (U) 0*32kB 1*64kB (U) 0*128kB 0*256kB 1*512kB (U) 0*1024kB 1*2048kB (M) 2*4096kB (M) = 10840kB
 __alloc_pages_slowpath mm/page_alloc.c:4317 [inline]
 __alloc_pages_nodemask+0x232f/0x2890 mm/page_alloc.c:4419
Node 0 DMA32: 417*4kB (UME) 321*8kB (UME) 227*16kB (UME) 103*32kB (UME) 32*64kB (UME) 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 13212kB
Node 0 Normal: 0*4kB 1*8kB (U) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 8kB
Node 1 Normal: 3*4kB (UME) 1*8kB (M) 1*16kB (M) 3*32kB (UME) 2*64kB (ME) 3*128kB (UME) 1*256kB (U) 1*512kB (M) 2*1024kB (M) 0*2048kB 4*4096kB (M) = 19844kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
25942 total pagecache pages
0 pages in swap cache
Swap cache stats: add 0, delete 0, find 0/0
Free swap  = 0kB
Total swap = 0kB
2097051 pages RAM
0 pages HighMem/MovableOnly
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0xa4/0x8a0 mm/slab.c:2682
369649 pages reserved
 fallback_alloc+0x213/0x2e0 mm/slab.c:3224
0 pages cma reserved
 slab_alloc_node mm/slab.c:3332 [inline]
 kmem_cache_alloc_node+0xe3/0x3b0 mm/slab.c:3647
syz-executor.1: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
 __alloc_skb+0x71/0x560 net/core/skbuff.c:193
syz-executor.1 cpuset=/ mems_allowed=0-1
 alloc_skb include/linux/skbuff.h:995 [inline]
 new_skb+0x24/0x1c0 drivers/block/aoe/aoecmd.c:67
 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline]
 aoecmd_cfg+0x191/0x5e0 drivers/block/aoe/aoecmd.c:1374
 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338
 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375
 __run_timers kernel/time/timer.c:1696 [inline]
 run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709
 __do_softirq+0x265/0x980 kernel/softirq.c:292
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1092
 </IRQ>
 do_softirq.part.0+0x160/0x1c0 kernel/softirq.c:336
 do_softirq kernel/softirq.c:328 [inline]
 __local_bh_enable_ip+0x20e/0x270 kernel/softirq.c:189
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 update_defense_level+0xa6a/0x10f0 net/netfilter/ipvs/ip_vs_ctl.c:215
 defense_work_handler+0x25/0xe0 net/netfilter/ipvs/ip_vs_ctl.c:229
 process_one_work+0x864/0x1570 kernel/workqueue.c:2153
 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
CPU: 1 PID: 28790 Comm: syz-executor.1 Not tainted 4.19.211-syzkaller #0
aoe: skb alloc failure
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 warn_alloc.cold+0x7b/0x18f mm/page_alloc.c:3457
kworker/0:2: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
kworker/0:2 cpuset=/ mems_allowed=0-1
 __alloc_pages_slowpath mm/page_alloc.c:4317 [inline]
 __alloc_pages_nodemask+0x232f/0x2890 mm/page_alloc.c:4419
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0xa4/0x8a0 mm/slab.c:2682
 fallback_alloc+0x213/0x2e0 mm/slab.c:3224
 slab_alloc_node mm/slab.c:3332 [inline]
 kmem_cache_alloc_node+0xe3/0x3b0 mm/slab.c:3647
 __alloc_skb+0x71/0x560 net/core/skbuff.c:193
 __netdev_alloc_skb+0x76/0x460 net/core/skbuff.c:407
 netdev_alloc_skb include/linux/skbuff.h:2680 [inline]
 dev_alloc_skb include/linux/skbuff.h:2693 [inline]
 send_hsr_supervision_frame+0x107/0xf70 net/hsr/hsr_device.c:265
 hsr_announce+0x125/0x3a0 net/hsr/hsr_device.c:350
 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338
 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375
 __run_timers kernel/time/timer.c:1696 [inline]
 run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709
 __do_softirq+0x265/0x980 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x215/0x260 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
 </IRQ>
RIP: 0010:lock_acquire+0x1f5/0x3c0 kernel/locking/lockdep.c:3912
Code: e8 03 80 3c 10 00 0f 85 b7 01 00 00 48 83 3d 09 2e a6 08 00 0f 84 2a 01 00 00 48 8b 7c 24 08 57 9d 0f 1f 44 00 00 48 83 c4 18 <5b> 5d 41 5c 41 5d 41 5e 41 5f c3 65 8b 05 89 2c b6 7e 83 f8 07 0f
RSP: 0018:ffff888092b3f828 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff13e3051 RBX: ffff8880a635c080 RCX: 000000000000798e
RDX: dffffc0000000000 RSI: 0000000018afff57 RDI: 0000000000000286
RBP: ffff8880ade9f4b8 R08: ffffffff8cd541b0 R09: 0000000000000001
R10: ffff8880a635c930 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:144
 spin_lock include/linux/spinlock.h:329 [inline]
 lockref_put_or_lock+0x14/0x80 lib/lockref.c:171
 fast_dput fs/dcache.c:715 [inline]
 dput+0x4a1/0x640 fs/dcache.c:833
 drop_mountpoint+0x3b/0xc0 fs/namespace.c:172
 pin_kill+0x174/0x7b0 fs/fs_pin.c:50
 group_pin_kill+0x60/0x1b0 fs/fs_pin.c:101
 namespace_unlock fs/namespace.c:1365 [inline]
 drop_collected_mounts+0x182/0x1a0 fs/namespace.c:1808
 put_mnt_ns fs/namespace.c:3271 [inline]
 put_mnt_ns+0x5f/0x80 fs/namespace.c:3267
 free_nsproxy+0x41/0x220 kernel/nsproxy.c:176
 switch_task_namespaces+0xaa/0xc0 kernel/nsproxy.c:229
 do_exit+0xbee/0x2be0 kernel/exit.c:869
 do_group_exit+0x125/0x310 kernel/exit.c:967
 get_signal+0x3f2/0x1f70 kernel/signal.c:2589
 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799
 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163
 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
 do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f12f4e5b0f9
Code: Bad RIP value.
RSP: 002b:00007f12f33cd168 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: 0000000000000008 RBX: 00007f12f4f7af80 RCX: 00007f12f4e5b0f9
RDX: 0000000000000088 RSI: 0000000000000002 RDI: 0000000000000002
RBP: 00007f12f4eb6ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd3d62b6cf R14: 00007f12f33cd300 R15: 0000000000022000
warn_alloc_show_mem: 1 callbacks suppressed
CPU: 0 PID: 26933 Comm: kworker/0:2 Not tainted 4.19.211-syzkaller #0
Mem-Info:
active_anon:227594 inactive_anon:7276 isolated_anon:0
 active_file:5827 inactive_file:11141 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:17019 slab_unreclaimable:1396282
 mapped:13232 shmem:8987 pagetables:935 bounce:0
 free:10976 free_pcp:545 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Node 0 active_anon:909848kB inactive_anon:29104kB active_file:23288kB inactive_file:44520kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:52928kB dirty:0kB writeback:0kB shmem:35948kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 157696kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
Workqueue: events defense_work_handler
Node 1 active_anon:528kB inactive_anon:0kB active_file:20kB inactive_file:44kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:0kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
Call Trace:
Node 0 DMA free:10840kB min:204kB low:252kB high:300kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
 <IRQ>
lowmem_reserve[]: 0 2693 2695 2695 2695
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
Node 0 DMA32 free:13212kB min:35996kB low:44992kB high:53988kB active_anon:909848kB inactive_anon:29104kB active_file:23288kB inactive_file:44520kB unevictable:0kB writepending:0kB present:3129332kB managed:2763452kB mlocked:0kB kernel_stack:7840kB pagetables:3740kB bounce:0kB free_pcp:1232kB local_pcp:1016kB free_cma:0kB
 warn_alloc.cold+0x7b/0x18f mm/page_alloc.c:3457
lowmem_reserve[]: 0 0 1 1 1
Node 0 Normal free:8kB min:24kB low:28kB high:32kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:1048576kB managed:2000kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 1 Normal free:19844kB min:53876kB low:67344kB high:80812kB active_anon:528kB inactive_anon:0kB active_file:20kB inactive_file:44kB unevictable:0kB writepending:0kB present:4194304kB managed:4128248kB mlocked:0kB kernel_stack:224kB pagetables:0kB bounce:0kB free_pcp:948kB local_pcp:668kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 1*8kB (U) 1*16kB (U) 0*32kB 1*64kB (U) 0*128kB 0*256kB 1*512kB (U) 0*1024kB 1*2048kB (M) 2*4096kB (M) = 10840kB
 __alloc_pages_slowpath mm/page_alloc.c:4317 [inline]
 __alloc_pages_nodemask+0x232f/0x2890 mm/page_alloc.c:4419
Node 0 DMA32: 417*4kB (UME) 321*8kB (UME) 227*16kB (UME) 103*32kB (UME) 32*64kB (UME) 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 13212kB
Node 0 Normal: 0*4kB 1*8kB (U) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 8kB
Node 1 Normal: 3*4kB (UME) 1*8kB (M) 1*16kB (M) 3*32kB (UME) 2*64kB (ME) 3*128kB (UME) 1*256kB (U) 1*512kB (M) 2*1024kB (M) 0*2048kB 4*4096kB (M) = 19844kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0xa4/0x8a0 mm/slab.c:2682
25942 total pagecache pages
 fallback_alloc+0x213/0x2e0 mm/slab.c:3224
0 pages in swap cache
 slab_alloc_node mm/slab.c:3332 [inline]
 kmem_cache_alloc_node+0xe3/0x3b0 mm/slab.c:3647
Swap cache stats: add 0, delete 0, find 0/0
 __alloc_skb+0x71/0x560 net/core/skbuff.c:193
Free swap  = 0kB
 alloc_skb include/linux/skbuff.h:995 [inline]
 new_skb+0x24/0x1c0 drivers/block/aoe/aoecmd.c:67
Total swap = 0kB
 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline]
 aoecmd_cfg+0x191/0x5e0 drivers/block/aoe/aoecmd.c:1374
2097051 pages RAM
0 pages HighMem/MovableOnly
 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338
369649 pages reserved
0 pages cma reserved
syz-executor.1: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
syz-executor.1 cpuset=/ mems_allowed=0-1
 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375
 __run_timers kernel/time/timer.c:1696 [inline]
 run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709
 __do_softirq+0x265/0x980 kernel/softirq.c:292
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1092
 </IRQ>
 do_softirq.part.0+0x160/0x1c0 kernel/softirq.c:336
 do_softirq kernel/softirq.c:328 [inline]
 __local_bh_enable_ip+0x20e/0x270 kernel/softirq.c:189
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 update_defense_level+0xa6a/0x10f0 net/netfilter/ipvs/ip_vs_ctl.c:215
 defense_work_handler+0x25/0xe0 net/netfilter/ipvs/ip_vs_ctl.c:229
 process_one_work+0x864/0x1570 kernel/workqueue.c:2153
 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
CPU: 1 PID: 28790 Comm: syz-executor.1 Not tainted 4.19.211-syzkaller #0
aoe: skb alloc failure
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 warn_alloc.cold+0x7b/0x18f mm/page_alloc.c:3457
kworker/0:2: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
kworker/0:2 cpuset=/ mems_allowed=0-1
 __alloc_pages_slowpath mm/page_alloc.c:4317 [inline]
 __alloc_pages_nodemask+0x232f/0x2890 mm/page_alloc.c:4419
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0xa4/0x8a0 mm/slab.c:2682
 fallback_alloc+0x213/0x2e0 mm/slab.c:3224
 slab_alloc_node mm/slab.c:3332 [inline]
 kmem_cache_alloc_node+0xe3/0x3b0 mm/slab.c:3647
 __alloc_skb+0x71/0x560 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:995 [inline]
 ndisc_alloc_skb+0x134/0x320 net/ipv6/ndisc.c:403
 ndisc_send_rs+0x33a/0x690 net/ipv6/ndisc.c:669
 addrconf_rs_timer+0x384/0x6a0 net/ipv6/addrconf.c:3835
 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338
 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375
 __run_timers kernel/time/timer.c:1696 [inline]
 run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709
 __do_softirq+0x265/0x980 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x215/0x260 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
 </IRQ>
RIP: 0010:lock_acquire+0x1f5/0x3c0 kernel/locking/lockdep.c:3912
Code: e8 03 80 3c 10 00 0f 85 b7 01 00 00 48 83 3d 09 2e a6 08 00 0f 84 2a 01 00 00 48 8b 7c 24 08 57 9d 0f 1f 44 00 00 48 83 c4 18 <5b> 5d 41 5c 41 5d 41 5e 41 5f c3 65 8b 05 89 2c b6 7e 83 f8 07 0f
RSP: 0018:ffff888092b3f828 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff13e3051 RBX: ffff8880a635c080 RCX: 000000000000798e
RDX: dffffc0000000000 RSI: 0000000018afff57 RDI: 0000000000000286
RBP: ffff8880ade9f4b8 R08: ffffffff8cd541b0 R09: 0000000000000001
R10: ffff8880a635c930 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:144
 spin_lock include/linux/spinlock.h:329 [inline]
 lockref_put_or_lock+0x14/0x80 lib/lockref.c:171
 fast_dput fs/dcache.c:715 [inline]
 dput+0x4a1/0x640 fs/dcache.c:833
 drop_mountpoint+0x3b/0xc0 fs/namespace.c:172
 pin_kill+0x174/0x7b0 fs/fs_pin.c:50
 group_pin_kill+0x60/0x1b0 fs/fs_pin.c:101
 namespace_unlock fs/namespace.c:1365 [inline]
 drop_collected_mounts+0x182/0x1a0 fs/namespace.c:1808
 put_mnt_ns fs/namespace.c:3271 [inline]
 put_mnt_ns+0x5f/0x80 fs/namespace.c:3267
 free_nsproxy+0x41/0x220 kernel/nsproxy.c:176
 switch_task_namespaces+0xaa/0xc0 kernel/nsproxy.c:229
 do_exit+0xbee/0x2be0 kernel/exit.c:869
 do_group_exit+0x125/0x310 kernel/exit.c:967
 get_signal+0x3f2/0x1f70 kernel/signal.c:2589
 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799
 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163
 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
 do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f12f4e5b0f9
Code: Bad RIP value.
RSP: 002b:00007f12f33cd168 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: 0000000000000008 RBX: 00007f12f4f7af80 RCX: 00007f12f4e5b0f9
RDX: 0000000000000088 RSI: 0000000000000002 RDI: 0000000000000002
RBP: 00007f12f4eb6ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd3d62b6cf R14: 00007f12f33cd300 R15: 0000000000022000
warn_alloc_show_mem: 1 callbacks suppressed
CPU: 0 PID: 26933 Comm: kworker/0:2 Not tainted 4.19.211-syzkaller #0
Mem-Info:
active_anon:227594 inactive_anon:7276 isolated_anon:0
 active_file:5827 inactive_file:11141 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:17019 slab_unreclaimable:1396282
 mapped:13232 shmem:8987 pagetables:935 bounce:0
 free:10976 free_pcp:545 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Node 0 active_anon:909848kB inactive_anon:29104kB active_file:23288kB inactive_file:44520kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:52928kB dirty:0kB writeback:0kB shmem:35948kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 157696kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
Workqueue: events defense_work_handler
Node 1 active_anon:528kB inactive_anon:0kB active_file:20kB inactive_file:44kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:0kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
Call Trace:
Node 0 DMA free:10840kB min:204kB low:252kB high:300kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
 <IRQ>
lowmem_reserve[]: 0 2693 2695 2695 2695
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
Node 0 DMA32 free:13212kB min:35996kB low:44992kB high:53988kB active_anon:909848kB inactive_anon:29104kB active_file:23288kB inactive_file:44520kB unevictable:0kB writepending:0kB present:3129332kB managed:2763452kB mlocked:0kB kernel_stack:7840kB pagetables:3740kB bounce:0kB free_pcp:1232kB local_pcp:1016kB free_cma:0kB
 warn_alloc.cold+0x7b/0x18f mm/page_alloc.c:3457
lowmem_reserve[]: 0 0 1 1 1
Node 0 Normal free:8kB min:24kB low:28kB high:32kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:1048576kB managed:2000kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 1 Normal free:19844kB min:53876kB low:67344kB high:80812kB active_anon:528kB inactive_anon:0kB active_file:20kB inactive_file:44kB unevictable:0kB writepending:0kB present:4194304kB managed:4128248kB mlocked:0kB kernel_stack:224kB pagetables:0kB bounce:0kB free_pcp:948kB local_pcp:668kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 1*8kB (U) 1*16kB (U) 0*32kB 1*64kB (U) 0*128kB 0*256kB 1*512kB (U) 0*1024kB 1*2048kB (M) 2*4096kB (M) = 10840kB
 __alloc_pages_slowpath mm/page_alloc.c:4317 [inline]
 __alloc_pages_nodemask+0x232f/0x2890 mm/page_alloc.c:4419
Node 0 DMA32: 417*4kB (UME) 321*8kB (UME) 227*16kB (UME) 103*32kB (UME) 32*64kB (UME) 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 13212kB
Node 0 Normal: 0*4kB 1*8kB (U) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 8kB
Node 1 Normal: 3*4kB (UME) 1*8kB (M) 1*16kB (M) 3*32kB (UME) 2*64kB (ME) 3*128kB (UME) 1*256kB (U) 1*512kB (M) 2*1024kB (M) 0*2048kB 4*4096kB (M) = 19844kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
25942 total pagecache pages
0 pages in swap cache
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0xa4/0x8a0 mm/slab.c:2682
Swap cache stats: add 0, delete 0, find 0/0
 fallback_alloc+0x213/0x2e0 mm/slab.c:3224
Free swap  = 0kB
 slab_alloc_node mm/slab.c:3332 [inline]
 kmem_cache_alloc_node+0xe3/0x3b0 mm/slab.c:3647
Total swap = 0kB
 __alloc_skb+0x71/0x560 net/core/skbuff.c:193
2097051 pages RAM
 alloc_skb include/linux/skbuff.h:995 [inline]
 new_skb+0x24/0x1c0 drivers/block/aoe/aoecmd.c:67
0 pages HighMem/MovableOnly
 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline]
 aoecmd_cfg+0x191/0x5e0 drivers/block/aoe/aoecmd.c:1374
369649 pages reserved
0 pages cma reserved
ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb
 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338
syz-executor.1: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
syz-executor.1 cpuset=/ mems_allowed=0-1
 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375
 __run_timers kernel/time/timer.c:1696 [inline]
 run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709
 __do_softirq+0x265/0x980 kernel/softirq.c:292
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1092
 </IRQ>
 do_softirq.part.0+0x160/0x1c0 kernel/softirq.c:336
 do_softirq kernel/softirq.c:328 [inline]
 __local_bh_enable_ip+0x20e/0x270 kernel/softirq.c:189
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 update_defense_level+0xa6a/0x10f0 net/netfilter/ipvs/ip_vs_ctl.c:215
 defense_work_handler+0x25/0xe0 net/netfilter/ipvs/ip_vs_ctl.c:229
 process_one_work+0x864/0x1570 kernel/workqueue.c:2153
 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
CPU: 1 PID: 28790 Comm: syz-executor.1 Not tainted 4.19.211-syzkaller #0
aoe: skb alloc failure
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 warn_alloc.cold+0x7b/0x18f mm/page_alloc.c:3457
kworker/0:2: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
kworker/0:2 cpuset=/ mems_allowed=0-1
 __alloc_pages_slowpath mm/page_alloc.c:4317 [inline]
 __alloc_pages_nodemask+0x232f/0x2890 mm/page_alloc.c:4419
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0xa4/0x8a0 mm/slab.c:2682
 fallback_alloc+0x213/0x2e0 mm/slab.c:3224
 slab_alloc_node mm/slab.c:3332 [inline]
 kmem_cache_alloc_node+0xe3/0x3b0 mm/slab.c:3647
 __alloc_skb+0x71/0x560 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:995 [inline]
 ndisc_alloc_skb+0x134/0x320 net/ipv6/ndisc.c:403
 ndisc_send_rs+0x33a/0x690 net/ipv6/ndisc.c:669
 addrconf_rs_timer+0x384/0x6a0 net/ipv6/addrconf.c:3835
 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338
 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375
 __run_timers kernel/time/timer.c:1696 [inline]
 run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709
 __do_softirq+0x265/0x980 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x215/0x260 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
 </IRQ>
RIP: 0010:lock_acquire+0x1f5/0x3c0 kernel/locking/lockdep.c:3912
Code: e8 03 80 3c 10 00 0f 85 b7 01 00 00 48 83 3d 09 2e a6 08 00 0f 84 2a 01 00 00 48 8b 7c 24 08 57 9d 0f 1f 44 00 00 48 83 c4 18 <5b> 5d 41 5c 41 5d 41 5e 41 5f c3 65 8b 05 89 2c b6 7e 83 f8 07 0f
RSP: 0018:ffff888092b3f828 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff13e3051 RBX: ffff8880a635c080 RCX: 000000000000798e
RDX: dffffc0000000000 RSI: 0000000018afff57 RDI: 0000000000000286
RBP: ffff8880ade9f4b8 R08: ffffffff8cd541b0 R09: 0000000000000001
R10: ffff8880a635c930 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:144
 spin_lock include/linux/spinlock.h:329 [inline]
 lockref_put_or_lock+0x14/0x80 lib/lockref.c:171
 fast_dput fs/dcache.c:715 [inline]
 dput+0x4a1/0x640 fs/dcache.c:833
 drop_mountpoint+0x3b/0xc0 fs/namespace.c:172
 pin_kill+0x174/0x7b0 fs/fs_pin.c:50
 group_pin_kill+0x60/0x1b0 fs/fs_pin.c:101
 namespace_unlock fs/namespace.c:1365 [inline]
 drop_collected_mounts+0x182/0x1a0 fs/namespace.c:1808
 put_mnt_ns fs/namespace.c:3271 [inline]
 put_mnt_ns+0x5f/0x80 fs/namespace.c:3267
 free_nsproxy+0x41/0x220 kernel/nsproxy.c:176
 switch_task_namespaces+0xaa/0xc0 kernel/nsproxy.c:229
 do_exit+0xbee/0x2be0 kernel/exit.c:869
 do_group_exit+0x125/0x310 kernel/exit.c:967
 get_signal+0x3f2/0x1f70 kernel/signal.c:2589
 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799
 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163
 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
 do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f12f4e5b0f9
Code: Bad RIP value.
RSP: 002b:00007f12f33cd168 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: 0000000000000008 RBX: 00007f12f4f7af80 RCX: 00007f12f4e5b0f9
RDX: 0000000000000088 RSI: 0000000000000002 RDI: 0000000000000002
RBP: 00007f12f4eb6ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd3d62b6cf R14: 00007f12f33cd300 R15: 0000000000022000
warn_alloc_show_mem: 1 callbacks suppressed
CPU: 0 PID: 26933 Comm: kworker/0:2 Not tainted 4.19.211-syzkaller #0
Mem-Info:
active_anon:227594 inactive_anon:7276 isolated_anon:0
 active_file:5827 inactive_file:11141 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:17019 slab_unreclaimable:1396282
 mapped:13232 shmem:8987 pagetables:935 bounce:0
 free:10976 free_pcp:545 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Node 0 active_anon:909848kB inactive_anon:29104kB active_file:23288kB inactive_file:44520kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:52928kB dirty:0kB writeback:0kB shmem:35948kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 157696kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
Workqueue: events defense_work_handler
Node 1 active_anon:528kB inactive_anon:0kB active_file:20kB inactive_file:44kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:0kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
Call Trace:
Node 0 DMA free:10840kB min:204kB low:252kB high:300kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
 <IRQ>
lowmem_reserve[]: 0 2693 2695 2695 2695
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
Node 0 DMA32 free:13212kB min:35996kB low:44992kB high:53988kB active_anon:909848kB inactive_anon:29104kB active_file:23288kB inactive_file:44520kB unevictable:0kB writepending:0kB present:3129332kB managed:2763452kB mlocked:0kB kernel_stack:7840kB pagetables:3740kB bounce:0kB free_pcp:1232kB local_pcp:1016kB free_cma:0kB
 warn_alloc.cold+0x7b/0x18f mm/page_alloc.c:3457
lowmem_reserve[]: 0 0 1 1 1
Node 0 Normal free:8kB min:24kB low:28kB high:32kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:1048576kB managed:2000kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 1 Normal free:19844kB min:53876kB low:67344kB high:80812kB active_anon:528kB inactive_anon:0kB active_file:20kB inactive_file:44kB unevictable:0kB writepending:0kB present:4194304kB managed:4128248kB mlocked:0kB kernel_stack:224kB pagetables:0kB bounce:0kB free_pcp:948kB local_pcp:668kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 1*8kB (U) 1*16kB (U) 0*32kB 1*64kB (U) 0*128kB 0*256kB 1*512kB (U) 0*1024kB 1*2048kB (M) 2*4096kB (M) = 10840kB
 __alloc_pages_slowpath mm/page_alloc.c:4317 [inline]
 __alloc_pages_nodemask+0x232f/0x2890 mm/page_alloc.c:4419
Node 0 DMA32: 417*4kB (UME) 321*8kB (UME) 227*16kB (UME) 103*32kB (UME) 32*64kB (UME) 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 13212kB
Node 0 Normal: 0*4kB 1*8kB (U) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 8kB
Node 1 Normal: 3*4kB (UME) 1*8kB (M) 1*16kB (M) 3*32kB (UME) 2*64kB (ME) 3*128kB (UME) 1*256kB (U) 1*512kB (M) 2*1024kB (M) 0*2048kB 4*4096kB (M) = 19844kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/02/19 02:27 linux-4.19.y 3f8a27f9e27b bcdf85f8 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 INFO: rcu detected stall in drop_mountpoint
* Struck through repros no longer work on HEAD.