run_ksoftirqd kernel/softirq.c:603 [inline] run_ksoftirqd+0x8e/0x110 kernel/softirq.c:595 smpboot_thread_fn+0x6a3/0xa40 kernel/smpboot.c:165 kthread+0x361/0x430 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-....: (500 ticks this GP) idle=1a6/1/0x4000000000000002 softirq=266754/267081 fqs=9 (detected by 1, t=10592 jiffies, g=420925, q=4602) Sending NMI from CPU 1 to CPUs 0: __alloc_pages_slowpath+0x2380/0x2910 mm/page_alloc.c:4657 NMI backtrace for cpu 0 CPU: 0 PID: 8726 Comm: syz-fuzzer Not tainted 5.4.0-rc1+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:68 [inline] RIP: 0010:write_comp_data+0x9/0x70 kernel/kcov.c:123 Code: 13 00 00 8b 80 fc 12 00 00 48 8b 11 48 83 c2 01 48 39 d0 76 07 48 89 34 d1 48 89 11 5d c3 0f 1f 00 65 4c 8b 04 25 40 fe 01 00 <65> 8b 05 78 e9 8e 7e a9 00 01 1f 00 75 51 41 8b 80 f8 12 00 00 83 RSP: 0000:ffff8880ae808e40 EFLAGS: 00000006 RAX: ffff88809d8ba200 RBX: 0000000000000000 RCX: ffffffff87420b1c RDX: 0000000000000000 RSI: 0000000000000048 RDI: 0000000000000001 RBP: ffff8880ae808e48 R08: ffff88809d8ba200 R09: ffffed1015d01230 R10: ffffed1015d0122f R11: ffff8880ae80917d R12: ffff8880ae808f88 R13: 0000000000000000 R14: ffff8880ae808ee0 R15: ffffffff87acc8e3 FS: 000000c42008ae68(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000042f236 CR3: 00000000899e2000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: format_decode+0x49c/0xbc0 lib/vsprintf.c:2380 vsnprintf+0x17e/0x19a0 lib/vsprintf.c:2462 snprintf+0xbb/0xf0 lib/vsprintf.c:2643 print_caller kernel/printk/printk.c:1280 [inline] print_prefix kernel/printk/printk.c:1299 [inline] msg_print_text+0x1a2/0x5c0 kernel/printk/printk.c:1316 console_unlock+0x38d/0xf10 kernel/printk/printk.c:2448 vprintk_emit+0x2a0/0x700 kernel/printk/printk.c:1996 vprintk_default+0x28/0x30 kernel/printk/printk.c:2023 vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:386 printk+0xba/0xed kernel/printk/printk.c:2056 printk_stack_address arch/x86/kernel/dumpstack.c:71 [inline] show_trace_log_lvl+0x23a/0x28c arch/x86/kernel/dumpstack.c:258 show_stack+0x39/0x3b arch/x86/kernel/dumpstack.c:293 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 warn_alloc.cold+0x87/0x17f mm/page_alloc.c:3757 __alloc_pages_slowpath+0x2380/0x2910 mm/page_alloc.c:4657 __alloc_pages_nodemask+0x638/0x900 mm/page_alloc.c:4765 __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] kmem_getpages mm/slab.c:1366 [inline] cache_grow_begin+0x90/0xd20 mm/slab.c:2599 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3146 ____cache_alloc_node+0x1bc/0x1d0 mm/slab.c:3214 slab_alloc_node mm/slab.c:3254 [inline] kmem_cache_alloc_node+0xe3/0x740 mm/slab.c:3574 __alloc_skb+0xd5/0x5e0 net/core/skbuff.c:197 alloc_skb include/linux/skbuff.h:1049 [inline] new_skb+0x28/0x1d0 drivers/block/aoe/aoecmd.c:67 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline] aoecmd_cfg+0x1b5/0x640 drivers/block/aoe/aoecmd.c:1372 discover_timer+0x4e/0x60 drivers/block/aoe/aoemain.c:24 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x6c3/0x1790 kernel/time/timer.c:1786 __do_softirq+0x262/0x98c kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x19b/0x1e0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1137 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:756 [inline] RIP: 0010:lock_is_held_type+0x272/0x320 kernel/locking/lockdep.c:4527 Code: ff df c7 83 94 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 88 00 00 00 48 83 3d 26 76 9a 07 00 74 31 48 8b 7d c0 57 9d <0f> 1f 44 00 00 48 83 c4 20 44 89 e0 5b 41 5c 41 5d 41 5e 41 5f 5d RSP: 0000:ffff8880a0f5f170 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff11e63ac RBX: ffff88809d8ba200 RCX: ffff88809d8baa98 RDX: dffffc0000000000 RSI: ffffffff88faae40 RDI: 0000000000000286 RBP: ffff8880a0f5f1b8 R08: ffff88809d8ba200 R09: ffffed1015d06b75 R10: ffffed1015d06b74 R11: ffff8880ae835ba3 R12: 0000000000000001 R13: ffff88809d8baae8 R14: ffffffff88faae40 R15: 0000000000000002 lock_is_held include/linux/lockdep.h:362 [inline] rcu_read_lock_held kernel/rcu/update.c:283 [inline] rcu_read_lock_held+0x9c/0xb0 kernel/rcu/update.c:277 css_next_descendant_pre+0x102/0x190 kernel/cgroup/cgroup.c:4251 mem_cgroup_iter+0x39e/0xaf0 mm/memcontrol.c:1080 shrink_node+0x333/0x14b0 mm/vmscan.c:2761 shrink_zones mm/vmscan.c:2967 [inline] do_try_to_free_pages+0x3cb/0x11f0 mm/vmscan.c:3025 try_to_free_pages+0x2e4/0x980 mm/vmscan.c:3238 __perform_reclaim mm/page_alloc.c:4115 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:4136 [inline] __alloc_pages_slowpath+0x983/0x2910 mm/page_alloc.c:4551 __alloc_pages_nodemask+0x638/0x900 mm/page_alloc.c:4765 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2188 alloc_pages include/linux/gfp.h:509 [inline] __page_cache_alloc+0x2a2/0x490 mm/filemap.c:980 pagecache_get_page+0x286/0xa00 mm/filemap.c:1670 filemap_fault+0x9b6/0x2be0 mm/filemap.c:2530 ext4_filemap_fault+0x86/0xb2 fs/ext4/inode.c:6292 __do_fault+0x111/0x540 mm/memory.c:3092 do_read_fault mm/memory.c:3489 [inline] do_fault mm/memory.c:3618 [inline] handle_pte_fault mm/memory.c:3849 [inline] __handle_mm_fault+0x2dd0/0x4040 mm/memory.c:3973 handle_mm_fault+0x3b7/0xaa0 mm/memory.c:4010 do_user_addr_fault arch/x86/mm/fault.c:1441 [inline] __do_page_fault+0x536/0xdd0 arch/x86/mm/fault.c:1506 do_page_fault+0x38/0x590 arch/x86/mm/fault.c:1530 page_fault+0x39/0x40 arch/x86/entry/entry_64.S:1202 RIP: 0033:0x42f260 Code: Bad RIP value. RSP: 002b:000000c42014be40 EFLAGS: 00010206 RAX: 000000c42006e780 RBX: 000000c420021f10 RCX: 0000000400000002 RDX: 000000c42001b300 RSI: 000000c42008ae40 RDI: 000000c42014bf38 RBP: 000000c42014bfa8 R08: 000000c42006e780 R09: 0000000000000000 R10: 000000c424bc5200 R11: 0000020e3af0ea04 R12: 0000000000000001 R13: 00000000000000f0 R14: 000000000045b6a0 R15: 0000000000000000 ksoftirqd/1: page allocation failure: order:0, mode:0x40a20(GFP_ATOMIC|__GFP_COMP), nodemask=(null),cpuset=/,mems_allowed=0-1 __alloc_pages_nodemask+0x638/0x900 mm/page_alloc.c:4765 __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] kmem_getpages mm/slab.c:1366 [inline] cache_grow_begin+0x90/0xd20 mm/slab.c:2599 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3146 ____cache_alloc_node+0x1bc/0x1d0 mm/slab.c:3214 slab_alloc_node mm/slab.c:3254 [inline] kmem_cache_alloc_node+0xe3/0x740 mm/slab.c:3574 __alloc_skb+0xd5/0x5e0 net/core/skbuff.c:197 alloc_skb include/linux/skbuff.h:1049 [inline] new_skb+0x28/0x1d0 drivers/block/aoe/aoecmd.c:67 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline] aoecmd_cfg+0x1b5/0x640 drivers/block/aoe/aoecmd.c:1372 discover_timer+0x4e/0x60 drivers/block/aoe/aoemain.c:24 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x6c3/0x1790 kernel/time/timer.c:1786 __do_softirq+0x262/0x98c kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x19b/0x1e0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1137 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:756 [inline] RIP: 0010:lock_is_held_type+0x272/0x320 kernel/locking/lockdep.c:4527 Code: ff df c7 83 94 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 88 00 00 00 48 83 3d 26 76 9a 07 00 74 31 48 8b 7d c0 57 9d <0f> 1f 44 00 00 48 83 c4 20 44 89 e0 5b 41 5c 41 5d 41 5e 41 5f 5d RSP: 0000:ffff8880a0f5f170 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff11e63ac RBX: ffff88809d8ba200 RCX: ffff88809d8baa98 RDX: dffffc0000000000 RSI: ffffffff88faae40 RDI: 0000000000000286 RBP: ffff8880a0f5f1b8 R08: ffff88809d8ba200 R09: ffffed1015d06b75 R10: ffffed1015d06b74 R11: ffff8880ae835ba3 R12: 0000000000000001 R13: ffff88809d8baae8 R14: ffffffff88faae40 R15: 0000000000000002 lock_is_held include/linux/lockdep.h:362 [inline] rcu_read_lock_held kernel/rcu/update.c:283 [inline] rcu_read_lock_held+0x9c/0xb0 kernel/rcu/update.c:277 css_next_descendant_pre+0x102/0x190 kernel/cgroup/cgroup.c:4251 mem_cgroup_iter+0x39e/0xaf0 mm/memcontrol.c:1080 shrink_node+0x333/0x14b0 mm/vmscan.c:2761 shrink_zones mm/vmscan.c:2967 [inline] do_try_to_free_pages+0x3cb/0x11f0 mm/vmscan.c:3025 try_to_free_pages+0x2e4/0x980 mm/vmscan.c:3238 __perform_reclaim mm/page_alloc.c:4115 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:4136 [inline] __alloc_pages_slowpath+0x983/0x2910 mm/page_alloc.c:4551 __alloc_pages_nodemask+0x638/0x900 mm/page_alloc.c:4765 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2188 alloc_pages include/linux/gfp.h:509 [inline] __page_cache_alloc+0x2a2/0x490 mm/filemap.c:980 pagecache_get_page+0x286/0xa00 mm/filemap.c:1670 filemap_fault+0x9b6/0x2be0 mm/filemap.c:2530 ext4_filemap_fault+0x86/0xb2 fs/ext4/inode.c:6292 __do_fault+0x111/0x540 mm/memory.c:3092 do_read_fault mm/memory.c:3489 [inline] do_fault mm/memory.c:3618 [inline] handle_pte_fault mm/memory.c:3849 [inline] __handle_mm_fault+0x2dd0/0x4040 mm/memory.c:3973 handle_mm_fault+0x3b7/0xaa0 mm/memory.c:4010 do_user_addr_fault arch/x86/mm/fault.c:1441 [inline] __do_page_fault+0x536/0xdd0 arch/x86/mm/fault.c:1506 do_page_fault+0x38/0x590 arch/x86/mm/fault.c:1530 page_fault+0x39/0x40 arch/x86/entry/entry_64.S:1202 RIP: 0033:0x42f260 Code: Bad RIP value. RSP: 002b:000000c42014be40 EFLAGS: 00010206 RAX: 000000c42006e780 RBX: 000000c420021f10 RCX: 0000000400000002 RDX: 000000c42001b300 RSI: 000000c42008ae40 RDI: 000000c42014bf38 RBP: 000000c42014bfa8 R08: 000000c42006e780 R09: 0000000000000000 R10: 000000c424bc5200 R11: 0000020e3af0ea04 R12: 0000000000000001 R13: 00000000000000f0 R14: 000000000045b6a0 R15: 0000000000000000 warn_alloc_show_mem: 1 callbacks suppressed CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.4.0-rc1+ #0 Mem-Info: active_anon:58333 inactive_anon:192 isolated_anon:0 active_file:1 inactive_file:1 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:17021 slab_unreclaimable:1445407 mapped:52226 shmem:245 pagetables:714 bounce:0 free:10897 free_pcp:256 free_cma:0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Node 0 active_anon:233332kB inactive_anon:768kB active_file:0kB inactive_file:4kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:208904kB dirty:0kB writeback:0kB shmem:980kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 210944kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes Call Trace: Node 1 active_anon:0kB inactive_anon:0kB active_file:4kB inactive_file:0kB 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? yes __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 Node 0 DMA free:10252kB min:220kB low:272kB high:324kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB warn_alloc.cold+0x87/0x17f mm/page_alloc.c:3757 lowmem_reserve[]: 0 2547 2548 2548 Node 0 DMA32 free:13368kB min:36184kB low:45228kB high:54272kB active_anon:233312kB inactive_anon:768kB active_file:0kB inactive_file:4kB unevictable:0kB writepending:0kB present:3129332kB managed:2611876kB mlocked:0kB kernel_stack:7296kB pagetables:2856kB bounce:0kB free_pcp:684kB local_pcp:248kB free_cma:0kB lowmem_reserve[]: 0 0 1 1 Node 0 Normal free:4kB min:16kB low:20kB high:24kB active_anon:20kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:786432kB managed:1172kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 __alloc_pages_slowpath+0x2380/0x2910 mm/page_alloc.c:4657 Node 1 Normal free:19964kB min:53684kB low:67104kB high:80524kB active_anon:0kB inactive_anon:0kB active_file:4kB inactive_file:0kB unevictable:0kB writepending:0kB present:3932160kB managed:3870244kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:340kB local_pcp:248kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 Node 0 DMA: 1*4kB (U) 1*8kB (U) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB (M) 2*4096kB (M) = 10252kB Node 0 DMA32: 1016*4kB (UME) 227*8kB (UME) 343*16kB (UME) 1*32kB (U) 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB (M) 0*4096kB = 13448kB Node 0 Normal: 1*4kB (U) 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 4kB Node 1 Normal: 91*4kB (E) 32*8kB (E) 5*16kB (E) 4*32kB (UMEH) 1*64kB (E) 1*128kB (E) 2*256kB (UE) 2*512kB (UM) 1*1024kB (M) 4*2048kB (UME) 2*4096kB (M) = 19964kB __alloc_pages_nodemask+0x638/0x900 mm/page_alloc.c:4765 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 __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] kmem_getpages mm/slab.c:1366 [inline] cache_grow_begin+0x90/0xd20 mm/slab.c:2599 Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB 247 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3146 Free swap = 0kB ____cache_alloc_node+0x1bc/0x1d0 mm/slab.c:3214 Total swap = 0kB 1965979 pages RAM 0 pages HighMem/MovableOnly __do_cache_alloc mm/slab.c:3283 [inline] slab_alloc mm/slab.c:3311 [inline] kmem_cache_alloc+0x1ef/0x710 mm/slab.c:3483 341179 pages reserved 0 pages cma reserved INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.509 msecs aoe: skb alloc failure __build_skb+0x26/0x70 net/core/skbuff.c:310 __netdev_alloc_skb+0x255/0x440 net/core/skbuff.c:463 syz-fuzzer: page allocation failure: order:0, mode:0x40a20(GFP_ATOMIC|__GFP_COMP), nodemask=(null),cpuset=/,mems_allowed=0-1 netdev_alloc_skb include/linux/skbuff.h:2763 [inline] dev_alloc_skb include/linux/skbuff.h:2776 [inline] send_hsr_supervision_frame+0x110/0xf20 net/hsr/hsr_device.c:252 hsr_announce+0x12f/0x3b0 net/hsr/hsr_device.c:334 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x6c3/0x1790 kernel/time/timer.c:1786 __do_softirq+0x262/0x98c kernel/softirq.c:292 run_ksoftirqd kernel/softirq.c:603 [inline] run_ksoftirqd+0x8e/0x110 kernel/softirq.c:595 smpboot_thread_fn+0x6a3/0xa40 kernel/smpboot.c:165 kthread+0x361/0x430 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 CPU: 0 PID: 8726 Comm: syz-fuzzer Not tainted 5.4.0-rc1+ #0 ksoftirqd/1: page allocation failure: order:0, mode:0x40a20(GFP_ATOMIC|__GFP_COMP), nodemask=(null),cpuset=/,mems_allowed=0-1 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 warn_alloc.cold+0x87/0x17f mm/page_alloc.c:3757 __alloc_pages_slowpath+0x2380/0x2910 mm/page_alloc.c:4657 __alloc_pages_nodemask+0x638/0x900 mm/page_alloc.c:4765 __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] kmem_getpages mm/slab.c:1366 [inline] cache_grow_begin+0x90/0xd20 mm/slab.c:2599 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3146 ____cache_alloc_node+0x1bc/0x1d0 mm/slab.c:3214 slab_alloc_node mm/slab.c:3254 [inline] kmem_cache_alloc_node+0xe3/0x740 mm/slab.c:3574 __alloc_skb+0xd5/0x5e0 net/core/skbuff.c:197 alloc_skb include/linux/skbuff.h:1049 [inline] new_skb+0x28/0x1d0 drivers/block/aoe/aoecmd.c:67 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline] aoecmd_cfg+0x1b5/0x640 drivers/block/aoe/aoecmd.c:1372 discover_timer+0x4e/0x60 drivers/block/aoe/aoemain.c:24 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x6c3/0x1790 kernel/time/timer.c:1786 __do_softirq+0x262/0x98c kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x19b/0x1e0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1137 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:756 [inline] RIP: 0010:lock_is_held_type+0x272/0x320 kernel/locking/lockdep.c:4527 Code: ff df c7 83 94 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 88 00 00 00 48 83 3d 26 76 9a 07 00 74 31 48 8b 7d c0 57 9d <0f> 1f 44 00 00 48 83 c4 20 44 89 e0 5b 41 5c 41 5d 41 5e 41 5f 5d RSP: 0000:ffff8880a0f5f170 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff11e63ac RBX: ffff88809d8ba200 RCX: ffff88809d8baa98 RDX: dffffc0000000000 RSI: ffffffff88faae40 RDI: 0000000000000286 RBP: ffff8880a0f5f1b8 R08: ffff88809d8ba200 R09: ffffed1015d06b75 R10: ffffed1015d06b74 R11: ffff8880ae835ba3 R12: 0000000000000001 R13: ffff88809d8baae8 R14: ffffffff88faae40 R15: 0000000000000002 lock_is_held include/linux/lockdep.h:362 [inline] rcu_read_lock_held kernel/rcu/update.c:283 [inline] rcu_read_lock_held+0x9c/0xb0 kernel/rcu/update.c:277 css_next_descendant_pre+0x102/0x190 kernel/cgroup/cgroup.c:4251 mem_cgroup_iter+0x39e/0xaf0 mm/memcontrol.c:1080 shrink_node+0x333/0x14b0 mm/vmscan.c:2761 shrink_zones mm/vmscan.c:2967 [inline] do_try_to_free_pages+0x3cb/0x11f0 mm/vmscan.c:3025 try_to_free_pages+0x2e4/0x980 mm/vmscan.c:3238 __perform_reclaim mm/page_alloc.c:4115 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:4136 [inline] __alloc_pages_slowpath+0x983/0x2910 mm/page_alloc.c:4551 __alloc_pages_nodemask+0x638/0x900 mm/page_alloc.c:4765 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2188 alloc_pages include/linux/gfp.h:509 [inline] __page_cache_alloc+0x2a2/0x490 mm/filemap.c:980 pagecache_get_page+0x286/0xa00 mm/filemap.c:1670 filemap_fault+0x9b6/0x2be0 mm/filemap.c:2530 ext4_filemap_fault+0x86/0xb2 fs/ext4/inode.c:6292 __do_fault+0x111/0x540 mm/memory.c:3092 do_read_fault mm/memory.c:3489 [inline] do_fault mm/memory.c:3618 [inline] handle_pte_fault mm/memory.c:3849 [inline] __handle_mm_fault+0x2dd0/0x4040 mm/memory.c:3973 handle_mm_fault+0x3b7/0xaa0 mm/memory.c:4010 do_user_addr_fault arch/x86/mm/fault.c:1441 [inline] __do_page_fault+0x536/0xdd0 arch/x86/mm/fault.c:1506 do_page_fault+0x38/0x590 arch/x86/mm/fault.c:1530 page_fault+0x39/0x40 arch/x86/entry/entry_64.S:1202 RIP: 0033:0x42f260 Code: Bad RIP value. RSP: 002b:000000c42014be40 EFLAGS: 00010206 RAX: 000000c42006e780 RBX: 000000c420021f10 RCX: 0000000400000002 RDX: 000000c42001b300 RSI: 000000c42008ae40 RDI: 000000c42014bf38 RBP: 000000c42014bfa8 R08: 000000c42006e780 R09: 0000000000000000 R10: 000000c424bc5200 R11: 0000020e3af0ea04 R12: 0000000000000001 R13: 00000000000000f0 R14: 000000000045b6a0 R15: 0000000000000000 warn_alloc_show_mem: 1 callbacks suppressed CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.4.0-rc1+ #0 Mem-Info: active_anon:58333 inactive_anon:192 isolated_anon:0 active_file:1 inactive_file:1 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:17021 slab_unreclaimable:1445407 mapped:52226 shmem:245 pagetables:714 bounce:0 free:10897 free_pcp:256 free_cma:0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Node 0 active_anon:233332kB inactive_anon:768kB active_file:0kB inactive_file:4kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:208904kB dirty:0kB writeback:0kB shmem:980kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 210944kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes Call Trace: Node 1 active_anon:0kB inactive_anon:0kB active_file:4kB inactive_file:0kB 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? yes __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 Node 0 DMA free:10252kB min:220kB low:272kB high:324kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB warn_alloc.cold+0x87/0x17f mm/page_alloc.c:3757 lowmem_reserve[]: 0 2547 2548 2548 Node 0 DMA32 free:13368kB min:36184kB low:45228kB high:54272kB active_anon:233312kB inactive_anon:768kB active_file:0kB inactive_file:4kB unevictable:0kB writepending:0kB present:3129332kB managed:2611876kB mlocked:0kB kernel_stack:7296kB pagetables:2856kB bounce:0kB free_pcp:684kB local_pcp:248kB free_cma:0kB lowmem_reserve[]: 0 0 1 1 Node 0 Normal free:4kB min:16kB low:20kB high:24kB active_anon:20kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:786432kB managed:1172kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 Node 1 Normal free:19964kB min:53684kB low:67104kB high:80524kB active_anon:0kB inactive_anon:0kB active_file:4kB inactive_file:0kB unevictable:0kB writepending:0kB present:3932160kB managed:3870244kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:340kB local_pcp:248kB free_cma:0kB __alloc_pages_slowpath+0x2380/0x2910 mm/page_alloc.c:4657 lowmem_reserve[]: 0 0 0 0 Node 0 DMA: 1*4kB (U) 1*8kB (U) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB (M) 2*4096kB (M) = 10252kB Node 0 DMA32: 1016*4kB (UME) 227*8kB (UME) 343*16kB (UME) 1*32kB (U) 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB (M) 0*4096kB = 13448kB Node 0 Normal: 1*4kB (U) 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 4kB Node 1 Normal: 91*4kB (E) 32*8kB (E) 5*16kB (E) 4*32kB (UMEH) 1*64kB (E) 1*128kB (E) 2*256kB (UE) 2*512kB (UM) 1*1024kB (M) 4*2048kB (UME) 2*4096kB (M) = 19964kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB __alloc_pages_nodemask+0x638/0x900 mm/page_alloc.c:4765 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 247 total pagecache pages __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] kmem_getpages mm/slab.c:1366 [inline] cache_grow_begin+0x90/0xd20 mm/slab.c:2599 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB fallback_alloc+0x1fd/0x2d0 mm/slab.c:3146 1965979 pages RAM ____cache_alloc_node+0x1bc/0x1d0 mm/slab.c:3214 0 pages HighMem/MovableOnly 341179 pages reserved 0 pages cma reserved __do_cache_alloc mm/slab.c:3283 [inline] slab_alloc mm/slab.c:3311 [inline] kmem_cache_alloc+0x1ef/0x710 mm/slab.c:3483 aoe: skb alloc failure __build_skb+0x26/0x70 net/core/skbuff.c:310 syz-fuzzer: page allocation failure: order:0, mode:0x40a20(GFP_ATOMIC|__GFP_COMP), nodemask=(null),cpuset=/,mems_allowed=0-1 __netdev_alloc_skb+0x255/0x440 net/core/skbuff.c:463 netdev_alloc_skb include/linux/skbuff.h:2763 [inline] dev_alloc_skb include/linux/skbuff.h:2776 [inline] send_hsr_supervision_frame+0x110/0xf20 net/hsr/hsr_device.c:252 hsr_announce+0x12f/0x3b0 net/hsr/hsr_device.c:334 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x6c3/0x1790 kernel/time/timer.c:1786 __do_softirq+0x262/0x98c kernel/softirq.c:292 run_ksoftirqd kernel/softirq.c:603 [inline] run_ksoftirqd+0x8e/0x110 kernel/softirq.c:595 smpboot_thread_fn+0x6a3/0xa40 kernel/smpboot.c:165 kthread+0x361/0x430 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 CPU: 0 PID: 8726 Comm: syz-fuzzer Not tainted 5.4.0-rc1+ #0 ksoftirqd/1: page allocation failure: order:0, mode:0x40a20(GFP_ATOMIC|__GFP_COMP), nodemask=(null),cpuset=/,mems_allowed=0-1 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 warn_alloc.cold+0x87/0x17f mm/page_alloc.c:3757 __alloc_pages_slowpath+0x2380/0x2910 mm/page_alloc.c:4657 __alloc_pages_nodemask+0x638/0x900 mm/page_alloc.c:4765 __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] kmem_getpages mm/slab.c:1366 [inline] cache_grow_begin+0x90/0xd20 mm/slab.c:2599 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3146 ____cache_alloc_node+0x1bc/0x1d0 mm/slab.c:3214 slab_alloc_node mm/slab.c:3254 [inline] kmem_cache_alloc_node+0xe3/0x740 mm/slab.c:3574 __alloc_skb+0xd5/0x5e0 net/core/skbuff.c:197 alloc_skb include/linux/skbuff.h:1049 [inline] new_skb+0x28/0x1d0 drivers/block/aoe/aoecmd.c:67 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline] aoecmd_cfg+0x1b5/0x640 drivers/block/aoe/aoecmd.c:1372 discover_timer+0x4e/0x60 drivers/block/aoe/aoemain.c:24 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x6c3/0x1790 kernel/time/timer.c:1786 __do_softirq+0x262/0x98c kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x19b/0x1e0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1137 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:756 [inline] RIP: 0010:lock_is_held_type+0x272/0x320 kernel/locking/lockdep.c:4527 Code: ff df c7 83 94 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 88 00 00 00 48 83 3d 26 76 9a 07 00 74 31 48 8b 7d c0 57 9d <0f> 1f 44 00 00 48 83 c4 20 44 89 e0 5b 41 5c 41 5d 41 5e 41 5f 5d RSP: 0000:ffff8880a0f5f170 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff11e63ac RBX: ffff88809d8ba200 RCX: ffff88809d8baa98 RDX: dffffc0000000000 RSI: ffffffff88faae40 RDI: 0000000000000286 RBP: ffff8880a0f5f1b8 R08: ffff88809d8ba200 R09: ffffed1015d06b75 R10: ffffed1015d06b74 R11: ffff8880ae835ba3 R12: 0000000000000001 R13: ffff88809d8baae8 R14: ffffffff88faae40 R15: 0000000000000002 lock_is_held include/linux/lockdep.h:362 [inline] rcu_read_lock_held kernel/rcu/update.c:283 [inline] rcu_read_lock_held+0x9c/0xb0 kernel/rcu/update.c:277 css_next_descendant_pre+0x102/0x190 kernel/cgroup/cgroup.c:4251 mem_cgroup_iter+0x39e/0xaf0 mm/memcontrol.c:1080 shrink_node+0x333/0x14b0 mm/vmscan.c:2761 shrink_zones mm/vmscan.c:2967 [inline] do_try_to_free_pages+0x3cb/0x11f0 mm/vmscan.c:3025 try_to_free_pages+0x2e4/0x980 mm/vmscan.c:3238 __perform_reclaim mm/page_alloc.c:4115 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:4136 [inline] __alloc_pages_slowpath+0x983/0x2910 mm/page_alloc.c:4551 __alloc_pages_nodemask+0x638/0x900 mm/page_alloc.c:4765 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2188 alloc_pages include/linux/gfp.h:509 [inline] __page_cache_alloc+0x2a2/0x490 mm/filemap.c:980 pagecache_get_page+0x286/0xa00 mm/filemap.c:1670 filemap_fault+0x9b6/0x2be0 mm/filemap.c:2530 ext4_filemap_fault+0x86/0xb2 fs/ext4/inode.c:6292 __do_fault+0x111/0x540 mm/memory.c:3092 do_read_fault mm/memory.c:3489 [inline] do_fault mm/memory.c:3618 [inline] handle_pte_fault mm/memory.c:3849 [inline] __handle_mm_fault+0x2dd0/0x4040 mm/memory.c:3973 handle_mm_fault+0x3b7/0xaa0 mm/memory.c:4010 do_user_addr_fault arch/x86/mm/fault.c:1441 [inline] __do_page_fault+0x536/0xdd0 arch/x86/mm/fault.c:1506 do_page_fault+0x38/0x590 arch/x86/mm/fault.c:1530 page_fault+0x39/0x40 arch/x86/entry/entry_64.S:1202 RIP: 0033:0x42f260 Code: Bad RIP value. RSP: 002b:000000c42014be40 EFLAGS: 00010206 RAX: 000000c42006e780 RBX: 000000c420021f10 RCX: 0000000400000002 RDX: 000000c42001b300 RSI: 000000c42008ae40 RDI: 000000c42014bf38 RBP: 000000c42014bfa8 R08: 000000c42006e780 R09: 0000000000000000 R10: 000000c424bc5200 R11: 0000020e3af0ea04 R12: 0000000000000001 R13: 00000000000000f0 R14: 000000000045b6a0 R15: 0000000000000000 warn_alloc_show_mem: 1 callbacks suppressed CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.4.0-rc1+ #0 Mem-Info: active_anon:58333 inactive_anon:192 isolated_anon:0 active_file:1 inactive_file:1 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:17021 slab_unreclaimable:1445407 mapped:52226 shmem:245 pagetables:714 bounce:0 free:10897 free_pcp:256 free_cma:0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Node 0 active_anon:233332kB inactive_anon:768kB active_file:0kB inactive_file:4kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:208904kB dirty:0kB writeback:0kB shmem:980kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 210944kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 Node 1 active_anon:0kB inactive_anon:0kB active_file:4kB inactive_file:0kB 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? yes warn_alloc.cold+0x87/0x17f mm/page_alloc.c:3757 Node 0 DMA free:10252kB min:220kB low:272kB high:324kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 2547 2548 2548 Node 0 DMA32 free:13368kB min:36184kB low:45228kB high:54272kB active_anon:233312kB inactive_anon:768kB active_file:0kB inactive_file:4kB unevictable:0kB writepending:0kB present:3129332kB managed:2611876kB mlocked:0kB kernel_stack:7296kB pagetables:2856kB bounce:0kB free_pcp:684kB local_pcp:248kB free_cma:0kB lowmem_reserve[]: 0 0 1 1 Node 0 Normal free:4kB min:16kB low:20kB high:24kB active_anon:20kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:786432kB managed:1172kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB __alloc_pages_slowpath+0x2380/0x2910 mm/page_alloc.c:4657 lowmem_reserve[]: 0 0 0 0 Node 1 Normal free:19964kB min:53684kB low:67104kB high:80524kB active_anon:0kB inactive_anon:0kB active_file:4kB inactive_file:0kB unevictable:0kB writepending:0kB present:3932160kB managed:3870244kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:340kB local_pcp:248kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 Node 0 DMA: 1*4kB (U) 1*8kB (U) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB (M) 2*4096kB (M) = 10252kB Node 0 DMA32: 1016*4kB (UME) 227*8kB (UME) 343*16kB (UME) 1*32kB (U) 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB (M) 0*4096kB = 13448kB Node 0 Normal: 1*4kB (U) 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 4kB __alloc_pages_nodemask+0x638/0x900 mm/page_alloc.c:4765 Node 1 Normal: 91*4kB (E) 32*8kB (E) 5*16kB (E) 4*32kB (UMEH) 1*64kB (E) 1*128kB (E) 2*256kB (UE) 2*512kB (UM) 1*1024kB (M) 4*2048kB (UME) 2*4096kB (M) = 19964kB 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 __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] kmem_getpages mm/slab.c:1366 [inline] cache_grow_begin+0x90/0xd20 mm/slab.c:2599 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 247 total pagecache pages 0 pages in swap cache fallback_alloc+0x1fd/0x2d0 mm/slab.c:3146 Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB ____cache_alloc_node+0x1bc/0x1d0 mm/slab.c:3214 Total swap = 0kB 1965979 pages RAM 0 pages HighMem/MovableOnly 341179 pages reserved slab_alloc_node mm/slab.c:3254 [inline] kmem_cache_alloc_node+0xe3/0x740 mm/slab.c:3574 0 pages cma reserved aoe: skb alloc failure __alloc_skb+0xd5/0x5e0 net/core/skbuff.c:197 syz-fuzzer: page allocation failure: order:0, mode:0x40a20(GFP_ATOMIC|__GFP_COMP), nodemask=(null),cpuset=/,mems_allowed=0-1 alloc_skb include/linux/skbuff.h:1049 [inline] ndisc_alloc_skb+0x13c/0x340 net/ipv6/ndisc.c:417 ndisc_send_rs+0x32b/0x6d0 net/ipv6/ndisc.c:683 addrconf_rs_timer+0x30f/0x680 net/ipv6/addrconf.c:3879 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x6c3/0x1790 kernel/time/timer.c:1786 __do_softirq+0x262/0x98c kernel/softirq.c:292 run_ksoftirqd kernel/softirq.c:603 [inline] run_ksoftirqd+0x8e/0x110 kernel/softirq.c:595 smpboot_thread_fn+0x6a3/0xa40 kernel/smpboot.c:165 kthread+0x361/0x430 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 CPU: 0 PID: 8726 Comm: syz-fuzzer Not tainted 5.4.0-rc1+ #0 ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 warn_alloc.cold+0x87/0x17f mm/page_alloc.c:3757 ksoftirqd/1: page allocation failure: order:0, mode:0x40a20(GFP_ATOMIC|__GFP_COMP), nodemask=(null),cpuset=/,mems_allowed=0-1 __alloc_pages_slowpath+0x2380/0x2910 mm/page_alloc.c:4657 __alloc_pages_nodemask+0x638/0x900 mm/page_alloc.c:4765 __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] kmem_getpages mm/slab.c:1366 [inline] cache_grow_begin+0x90/0xd20 mm/slab.c:2599 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3146 ____cache_alloc_node+0x1bc/0x1d0 mm/slab.c:3214 slab_alloc_node mm/slab.c:3254 [inline] kmem_cache_alloc_node+0xe3/0x740 mm/slab.c:3574 __alloc_skb+0xd5/0x5e0 net/core/skbuff.c:197 alloc_skb include/linux/skbuff.h:1049 [inline] new_skb+0x28/0x1d0 drivers/block/aoe/aoecmd.c:67 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline] aoecmd_cfg+0x1b5/0x640 drivers/block/aoe/aoecmd.c:1372 discover_timer+0x4e/0x60 drivers/block/aoe/aoemain.c:24 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x6c3/0x1790 kernel/time/timer.c:1786 __do_softirq+0x262/0x98c kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x19b/0x1e0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1137 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:756 [inline] RIP: 0010:lock_is_held_type+0x272/0x320 kernel/locking/lockdep.c:4527 Code: ff df c7 83 94 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 88 00 00 00 48 83 3d 26 76 9a 07 00 74 31 48 8b 7d c0 57 9d <0f> 1f 44 00 00 48 83 c4 20 44 89 e0 5b 41 5c 41 5d 41 5e 41 5f 5d RSP: 0000:ffff8880a0f5f170 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff11e63ac RBX: ffff88809d8ba200 RCX: ffff88809d8baa98 RDX: dffffc0000000000 RSI: ffffffff88faae40 RDI: 0000000000000286 RBP: ffff8880a0f5f1b8 R08: ffff88809d8ba200 R09: ffffed1015d06b75 R10: ffffed1015d06b74 R11: ffff8880ae835ba3 R12: 0000000000000001 R13: ffff88809d8baae8 R14: ffffffff88faae40 R15: 0000000000000002 lock_is_held include/linux/lockdep.h:362 [inline] rcu_read_lock_held kernel/rcu/update.c:283 [inline] rcu_read_lock_held+0x9c/0xb0 kernel/rcu/update.c:277 css_next_descendant_pre+0x102/0x190 kernel/cgroup/cgroup.c:4251 mem_cgroup_iter+0x39e/0xaf0 mm/memcontrol.c:1080 shrink_node+0x333/0x14b0 mm/vmscan.c:2761 shrink_zones mm/vmscan.c:2967 [inline] do_try_to_free_pages+0x3cb/0x11f0 mm/vmscan.c:3025 try_to_free_pages+0x2e4/0x980 mm/vmscan.c:3238 __perform_reclaim mm/page_alloc.c:4115 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:4136 [inline] __alloc_pages_slowpath+0x983/0x2910 mm/page_alloc.c:4551 __alloc_pages_nodemask+0x638/0x900 mm/page_alloc.c:4765 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2188 alloc_pages include/linux/gfp.h:509 [inline] __page_cache_alloc+0x2a2/0x490 mm/filemap.c:980 pagecache_get_page+0x286/0xa00 mm/filemap.c:1670 filemap_fault+0x9b6/0x2be0 mm/filemap.c:2530 ext4_filemap_fault+0x86/0xb2 fs/ext4/inode.c:6292 __do_fault+0x111/0x540 mm/memory.c:3092 do_read_fault mm/memory.c:3489 [inline] do_fault mm/memory.c:3618 [inline] handle_pte_fault mm/memory.c:3849 [inline] __handle_mm_fault+0x2dd0/0x4040 mm/memory.c:3973 handle_mm_fault+0x3b7/0xaa0 mm/memory.c:4010 do_user_addr_fault arch/x86/mm/fault.c:1441 [inline] __do_page_fault+0x536/0xdd0 arch/x86/mm/fault.c:1506 do_page_fault+0x38/0x590 arch/x86/mm/fault.c:1530 page_fault+0x39/0x40 arch/x86/entry/entry_64.S:1202 RIP: 0033:0x42f260 Code: Bad RIP value. RSP: 002b:000000c42014be40 EFLAGS: 00010206 RAX: 000000c42006e780 RBX: 000000c420021f10 RCX: 0000000400000002 RDX: 000000c42001b300 RSI: 000000c42008ae40 RDI: 000000c42014bf38 RBP: 000000c42014bfa8 R08: 000000c42006e780 R09: 0000000000000000 R10: 000000c424bc5200 R11: 0000020e3af0ea04 R12: 0000000000000001 R13: 00000000000000f0 R14: 000000000045b6a0 R15: 0000000000000000 warn_alloc_show_mem: 1 callbacks suppressed CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.4.0-rc1+ #0 Mem-Info: active_anon:58333 inactive_anon:192 isolated_anon:0 active_file:1 inactive_file:1 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:17021 slab_unreclaimable:1445407 mapped:52226 shmem:245 pagetables:714 bounce:0 free:10897 free_pcp:256 free_cma:0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: Node 0 active_anon:233332kB inactive_anon:768kB active_file:0kB inactive_file:4kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:208904kB dirty:0kB writeback:0kB shmem:980kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 210944kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 Node 1 active_anon:0kB inactive_anon:0kB active_file:4kB inactive_file:0kB 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? yes warn_alloc.cold+0x87/0x17f mm/page_alloc.c:3757 Node 0 DMA free:10252kB min:220kB low:272kB high:324kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 2547 2548 2548 Node 0 DMA32 free:13368kB min:36184kB low:45228kB high:54272kB active_anon:233312kB inactive_anon:768kB active_file:0kB inactive_file:4kB unevictable:0kB writepending:0kB present:3129332kB managed:2611876kB mlocked:0kB kernel_stack:7296kB pagetables:2856kB bounce:0kB free_pcp:684kB local_pcp:248kB free_cma:0kB lowmem_reserve[]: 0 0 1 1 Node 0 Normal free:4kB min:16kB low:20kB high:24kB active_anon:20kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:786432kB managed:1172kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB __alloc_pages_slowpath+0x2380/0x2910 mm/page_alloc.c:4657 lowmem_reserve[]: 0 0 0 0 Node 1 Normal free:19964kB min:53684kB low:67104kB high:80524kB active_anon:0kB inactive_anon:0kB active_file:4kB inactive_file:0kB unevictable:0kB writepending:0kB present:3932160kB managed:3870244kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:340kB local_pcp:248kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 Node 0 DMA: 1*4kB (U) 1*8kB (U) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB (M) 2*4096kB (M) = 10252kB Node 0 DMA32: 1016*4kB (UME) 227*8kB (UME) 343*16kB (UME) 1*32kB (U) 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB (M) 0*4096kB = 13448kB Node 0 Normal: 1*4kB (U) 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 4kB __alloc_pages_nodemask+0x638/0x900 mm/page_alloc.c:4765 Node 1 Normal: 91*4kB (E) 32*8kB (E) 5*16kB (E) 4*32kB (UMEH) 1*64kB (E) 1*128kB (E) 2*256kB (UE) 2*512kB (UM) 1*1024kB (M) 4*2048kB (UME) 2*4096kB (M) = 19964kB 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 __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] kmem_getpages mm/slab.c:1366 [inline] cache_grow_begin+0x90/0xd20 mm/slab.c:2599 Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB 247 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB fallback_alloc+0x1fd/0x2d0 mm/slab.c:3146 Total swap = 0kB 1965979 pages RAM ____cache_alloc_node+0x1bc/0x1d0 mm/slab.c:3214 0 pages HighMem/MovableOnly 341179 pages reserved 0 pages cma reserved slab_alloc_node mm/slab.c:3254 [inline] kmem_cache_alloc_node+0xe3/0x740 mm/slab.c:3574 aoe: skb alloc failure __alloc_skb+0xd5/0x5e0 net/core/skbuff.c:197 syz-fuzzer: page allocation failure: order:0, mode:0x40a20(GFP_ATOMIC|__GFP_COMP), nodemask=(null),cpuset=/,mems_allowed=0-1 alloc_skb include/linux/skbuff.h:1049 [inline] ndisc_alloc_skb+0x13c/0x340 net/ipv6/ndisc.c:417 ndisc_send_rs+0x32b/0x6d0 net/ipv6/ndisc.c:683 addrconf_rs_timer+0x30f/0x680 net/ipv6/addrconf.c:3879 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x6c3/0x1790 kernel/time/timer.c:1786 __do_softirq+0x262/0x98c kernel/softirq.c:292 run_ksoftirqd kernel/softirq.c:603 [inline] run_ksoftirqd+0x8e/0x110 kernel/softirq.c:595 smpboot_thread_fn+0x6a3/0xa40 kernel/smpboot.c:165 kthread+0x361/0x430 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 CPU: 0 PID: 8726 Comm: syz-fuzzer Not tainted 5.4.0-rc1+ #0 ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 warn_alloc.cold+0x87/0x17f mm/page_alloc.c:3757 ksoftirqd/1: page allocation failure: order:0, mode:0x40a20(GFP_ATOMIC|__GFP_COMP), nodemask=(null),cpuset=/,mems_allowed=0-1 __alloc_pages_slowpath+0x2380/0x2910 mm/page_alloc.c:4657 __alloc_pages_nodemask+0x638/0x900 mm/page_alloc.c:4765 __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] kmem_getpages mm/slab.c:1366 [inline] cache_grow_begin+0x90/0xd20 mm/slab.c:2599 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3146 ____cache_alloc_node+0x1bc/0x1d0 mm/slab.c:3214 slab_alloc_node mm/slab.c:3254 [inline] kmem_cache_alloc_node+0xe3/0x740 mm/slab.c:3574 __alloc_skb+0xd5/0x5e0 net/core/skbuff.c:197 alloc_skb include/linux/skbuff.h:1049 [inline] new_skb+0x28/0x1d0 drivers/block/aoe/aoecmd.c:67 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline] aoecmd_cfg+0x1b5/0x640 drivers/block/aoe/aoecmd.c:1372 discover_timer+0x4e/0x60 drivers/block/aoe/aoemain.c:24 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x6c3/0x1790 kernel/time/timer.c:1786 __do_softirq+0x262/0x98c kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x19b/0x1e0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1137 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:756 [inline] RIP: 0010:lock_is_held_type+0x272/0x320 kernel/locking/lockdep.c:4527 Code: ff df c7 83 94 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 88 00 00 00 48 83 3d 26 76 9a 07 00 74 31 48 8b 7d c0 57 9d <0f> 1f 44 00 00 48 83 c4 20 44 89 e0 5b 41 5c 41 5d 41 5e 41 5f 5d RSP: 0000:ffff8880a0f5f170 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff11e63ac RBX: ffff88809d8ba200 RCX: ffff88809d8baa98 RDX: dffffc0000000000 RSI: ffffffff88faae40 RDI: 0000000000000286 RBP: ffff8880a0f5f1b8 R08: ffff88809d8ba200 R09: ffffed1015d06b75 R10: ffffed1015d06b74 R11: ffff8880ae835ba3 R12: 0000000000000001 R13: ffff88809d8baae8 R14: ffffffff88faae40 R15: 0000000000000002 lock_is_held include/linux/lockdep.h:362 [inline] rcu_read_lock_held kernel/rcu/update.c:283 [inline] rcu_read_lock_held+0x9c/0xb0 kernel/rcu/update.c:277 css_next_descendant_pre+0x102/0x190 kernel/cgroup/cgroup.c:4251 mem_cgroup_iter+0x39e/0xaf0 mm/memcontrol.c:1080 shrink_node+0x333/0x14b0 mm/vmscan.c:2761 shrink_zones mm/vmscan.c:2967 [inline] do_try_to_free_pages+0x3cb/0x11f0 mm/vmscan.c:3025 try_to_free_pages+0x2e4/0x980 mm/vmscan.c:3238 __perform_reclaim mm/page_alloc.c:4115 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:4136 [inline] __alloc_pages_slowpath+0x983/0x2910 mm/page_alloc.c:4551 __alloc_pages_nodemask+0x638/0x900 mm/page_alloc.c:4765 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2188 alloc_pages include/linux/gfp.h:509 [inline] __page_cache_alloc+0x2a2/0x490 mm/filemap.c:980 pagecache_get_page+0x286/0xa00 mm/filemap.c:1670 filemap_fault+0x9b6/0x2be0 mm/filemap.c:2530 ext4_filemap_fault+0x86/0xb2 fs/ext4/inode.c:6292 __do_fault+0x111/0x540 mm/memory.c:3092 do_read_fault mm/memory.c:3489 [inline] do_fault mm/memory.c:3618 [inline] handle_pte_fault mm/memory.c:3849 [inline] __handle_mm_fault+0x2dd0/0x4040 mm/memory.c:3973 handle_mm_fault+0x3b7/0xaa0 mm/memory.c:4010 do_user_addr_fault arch/x86/mm/fault.c:1441 [inline] __do_page_fault+0x536/0xdd0 arch/x86/mm/fault.c:1506 do_page_fault+0x38/0x590 arch/x86/mm/fault.c:1530 page_fault+0x39/0x40 arch/x86/entry/entry_64.S:1202 RIP: 0033:0x42f260 Code: Bad RIP value. RSP: 002b:000000c42014be40 EFLAGS: 00010206 RAX: 000000c42006e780 RBX: 000000c420021f10 RCX: 0000000400000002 RDX: 000000c42001b300 RSI: 000000c42008ae40 RDI: 000000c42014bf38 RBP: 000000c42014bfa8 R08: 000000c42006e780 R09: 0000000000000000 R10: 000000c424bc5200 R11: 0000020e3af0ea04 R12: 0000000000000001 R13: 00000000000000f0 R14: 000000000045b6a0 R15: 0000000000000000 warn_alloc_show_mem: 1 callbacks suppressed CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.4.0-rc1+ #0 Mem-Info: active_anon:58333 inactive_anon:192 isolated_anon:0 active_file:1 inactive_file:1 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:17021 slab_unreclaimable:1445407 mapped:52226 shmem:245 pagetables:714 bounce:0 free:10897 free_pcp:256 free_cma:0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Node 0 active_anon:233332kB inactive_anon:768kB active_file:0kB inactive_file:4kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:208904kB dirty:0kB writeback:0kB shmem:980kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 210944kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes Call Trace: Node 1 active_anon:0kB inactive_anon:0kB active_file:4kB inactive_file:0kB 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? yes __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 Node 0 DMA free:10252kB min:220kB low:272kB high:324kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB warn_alloc.cold+0x87/0x17f mm/page_alloc.c:3757 lowmem_reserve[]: 0 2547 2548 2548 Node 0 DMA32 free:13368kB min:36184kB low:45228kB high:54272kB active_anon:233312kB inactive_anon:768kB active_file:0kB inactive_file:4kB unevictable:0kB writepending:0kB present:3129332kB managed:2611876kB mlocked:0kB kernel_stack:7296kB pagetables:2856kB bounce:0kB free_pcp:684kB local_pcp:248kB free_cma:0kB lowmem_reserve[]: 0 0 1 1 Node 0 Normal free:4kB min:16kB low:20kB high:24kB active_anon:20kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:786432kB managed:1172kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 Node 1 Normal free:19964kB min:53684kB low:67104kB high:80524kB active_anon:0kB inactive_anon:0kB active_file:4kB inactive_file:0kB unevictable:0kB writepending:0kB present:3932160kB managed:3870244kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:340kB local_pcp:248kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 __alloc_pages_slowpath+0x2380/0x2910 mm/page_alloc.c:4657 Node 0 DMA: 1*4kB (U) 1*8kB (U) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB (M) 2*4096kB (M) = 10252kB Node 0 DMA32: 1016*4kB (UME) 227*8kB (UME) 343*16kB (UME) 1*32kB (U) 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB (M) 0*4096kB = 13448kB Node 0 Normal: 1*4kB (U) 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 4kB Node 1 Normal: 91*4kB (E) 32*8kB (E) 5*16kB (E) 4*32kB (UMEH) 1*64kB (E) 1*128kB (E) 2*256kB (UE) 2*512kB (UM) 1*1024kB (M) 4*2048kB (UME) 2*4096kB (M) = 19964kB 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 __alloc_pages_nodemask+0x638/0x900 mm/page_alloc.c:4765 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 247 total pagecache pages __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] kmem_getpages mm/slab.c:1366 [inline] cache_grow_begin+0x90/0xd20 mm/slab.c:2599 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 1965979 pages RAM fallback_alloc+0x1fd/0x2d0 mm/slab.c:3146 0 pages HighMem/MovableOnly 341179 pages reserved ____cache_alloc_node+0x1bc/0x1d0 mm/slab.c:3214 0 pages cma reserved aoe: skb alloc failure slab_alloc_node mm/slab.c:3254 [inline] kmem_cache_alloc_node+0xe3/0x740 mm/slab.c:3574 __alloc_skb+0xd5/0x5e0 net/core/skbuff.c:197 syz-fuzzer: page allocation failure: order:0, mode:0x40a20(GFP_ATOMIC|__GFP_COMP), nodemask=(null),cpuset=/,mems_allowed=0-1 alloc_skb include/linux/skbuff.h:1049 [inline] ndisc_alloc_skb+0x13c/0x340 net/ipv6/ndisc.c:417 ndisc_send_rs+0x32b/0x6d0 net/ipv6/ndisc.c:683 addrconf_rs_timer+0x30f/0x680 net/ipv6/addrconf.c:3879 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x6c3/0x1790 kernel/time/timer.c:1786 __do_softirq+0x262/0x98c kernel/softirq.c:292 run_ksoftirqd kernel/softirq.c:603 [inline] run_ksoftirqd+0x8e/0x110 kernel/softirq.c:595 smpboot_thread_fn+0x6a3/0xa40 kernel/smpboot.c:165 kthread+0x361/0x430 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 CPU: 0 PID: 8726 Comm: syz-fuzzer Not tainted 5.4.0-rc1+ #0 ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 warn_alloc.cold+0x87/0x17f mm/page_alloc.c:3757 ksoftirqd/1: page allocation failure: order:0, mode:0x40a20(GFP_ATOMIC|__GFP_COMP), nodemask=(null),cpuset=/,mems_allowed=0-1 __alloc_pages_slowpath+0x2380/0x2910 mm/page_alloc.c:4657 __alloc_pages_nodemask+0x638/0x900 mm/page_alloc.c:4765 __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] kmem_getpages mm/slab.c:1366 [inline] cache_grow_begin+0x90/0xd20 mm/slab.c:2599 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3146 ____cache_alloc_node+0x1bc/0x1d0 mm/slab.c:3214 slab_alloc_node mm/slab.c:3254 [inline] kmem_cache_alloc_node+0xe3/0x740 mm/slab.c:3574 __alloc_skb+0xd5/0x5e0 net/core/skbuff.c:197 alloc_skb include/linux/skbuff.h:1049 [inline] new_skb+0x28/0x1d0 drivers/block/aoe/aoecmd.c:67 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline] aoecmd_cfg+0x1b5/0x640 drivers/block/aoe/aoecmd.c:1372 discover_timer+0x4e/0x60 drivers/block/aoe/aoemain.c:24 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x6c3/0x1790 kernel/time/timer.c:1786 __do_softirq+0x262/0x98c kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x19b/0x1e0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1137 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:756 [inline] RIP: 0010:lock_is_held_type+0x272/0x320 kernel/locking/lockdep.c:4527 Code: ff df c7 83 94 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 88 00 00 00 48 83 3d 26 76 9a 07 00 74 31 48 8b 7d c0 57 9d <0f> 1f 44 00 00 48 83 c4 20 44 89 e0 5b 41 5c 41 5d 41 5e 41 5f 5d RSP: 0000:ffff8880a0f5f170 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff11e63ac RBX: ffff88809d8ba200 RCX: ffff88809d8baa98 RDX: dffffc0000000000 RSI: ffffffff88faae40 RDI: 0000000000000286 RBP: ffff8880a0f5f1b8 R08: ffff88809d8ba200 R09: ffffed1015d06b75 R10: ffffed1015d06b74 R11: ffff8880ae835ba3 R12: 0000000000000001 R13: ffff88809d8baae8 R14: ffffffff88faae40 R15: 0000000000000002 lock_is_held include/linux/lockdep.h:362 [inline] rcu_read_lock_held kernel/rcu/update.c:283 [inline] rcu_read_lock_held+0x9c/0xb0 kernel/rcu/update.c:277 css_next_descendant_pre+0x102/0x190 kernel/cgroup/cgroup.c:4251 mem_cgroup_iter+0x39e/0xaf0 mm/memcontrol.c:1080 shrink_node+0x333/0x14b0 mm/vmscan.c:2761 shrink_zones mm/vmscan.c:2967 [inline] do_try_to_free_pages+0x3cb/0x11f0 mm/vmscan.c:3025 try_to_free_pages+0x2e4/0x980 mm/vmscan.c:3238 __perform_reclaim mm/page_alloc.c:4115 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:4136 [inline] __alloc_pages_slowpath+0x983/0x2910 mm/page_alloc.c:4551 __alloc_pages_nodemask+0x638/0x900 mm/page_alloc.c:4765 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2188 alloc_pages include/linux/gfp.h:509 [inline] __page_cache_alloc+0x2a2/0x490 mm/filemap.c:980 pagecache_get_page+0x286/0xa00 mm/filemap.c:1670 filemap_fault+0x9b6/0x2be0 mm/filemap.c:2530 ext4_filemap_fault+0x86/0xb2 fs/ext4/inode.c:6292 __do_fault+0x111/0x540 mm/memory.c:3092 do_read_fault mm/memory.c:3489 [inline] do_fault mm/memory.c:3618 [inline] handle_pte_fault mm/memory.c:3849 [inline] __handle_mm_fault+0x2dd0/0x4040 mm/memory.c:3973 handle_mm_fault+0x3b7/0xaa0 mm/memory.c:4010 do_user_addr_fault arch/x86/mm/fault.c:1441 [inline] __do_page_fault+0x536/0xdd0 arch/x86/mm/fault.c:1506 do_page_fault+0x38/0x590 arch/x86/mm/fault.c:1530 page_fault+0x39/0x40 arch/x86/entry/entry_64.S:1202 RIP: 0033:0x42f260 Code: Bad RIP value. RSP: 002b:000000c42014be40 EFLAGS: 00010206 RAX: 000000c42006e780 RBX: 000000c420021f10 RCX: 0000000400000002 RDX: 000000c42001b300 RSI: 000000c42008ae40 RDI: 000000c42014bf38 RBP: 000000c42014bfa8 R08: 000000c42006e780 R09: 0000000000000000 R10: 000000c424bc5200 R11: 0000020e3af0ea04 R12: 0000000000000001 R13: 00000000000000f0 R14: 000000000045b6a0 R15: 0000000000000000 warn_alloc_show_mem: 1 callbacks suppressed CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.4.0-rc1+ #0 Mem-Info: active_anon:58333 inactive_anon:192 isolated_anon:0 active_file:1 inactive_file:1 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:17021 slab_unreclaimable:1445407 mapped:52226 shmem:245 pagetables:714 bounce:0 free:10897 free_pcp:256 free_cma:0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Node 0 active_anon:233332kB inactive_anon:768kB active_file:0kB inactive_file:4kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:208904kB dirty:0kB writeback:0kB shmem:980kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 210944kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes Call Trace: Node 1 active_anon:0kB inactive_anon:0kB active_file:4kB inactive_file:0kB 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? yes __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 Node 0 DMA free:10252kB min:220kB low:272kB high:324kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB warn_alloc.cold+0x87/0x17f mm/page_alloc.c:3757 lowmem_reserve[]: 0 2547 2548 2548 Node 0 DMA32 free:13368kB min:36184kB low:45228kB high:54272kB active_anon:233312kB inactive_anon:768kB active_file:0kB inactive_file:4kB unevictable:0kB writepending:0kB present:3129332kB managed:2611876kB mlocked:0kB kernel_stack:7296kB pagetables:2856kB bounce:0kB free_pcp:684kB local_pcp:248kB free_cma:0kB lowmem_reserve[]: 0 0 1 1 Node 0 Normal free:4kB min:16kB low:20kB high:24kB active_anon:20kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:786432kB managed:1172kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 Node 1 Normal free:19964kB min:53684kB low:67104kB high:80524kB active_anon:0kB inactive_anon:0kB active_file:4kB inactive_file:0kB unevictable:0kB writepending:0kB present:3932160kB managed:3870244kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:340kB local_pcp:248kB free_cma:0kB __alloc_pages_slowpath+0x2380/0x2910 mm/page_alloc.c:4657 lowmem_reserve[]: 0 0 0 0 Node 0 DMA: 1*4kB (U) 1*8kB (U) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB (M) 2*4096kB (M) = 10252kB Node 0 DMA32: 1016*4kB (UME) 227*8kB (UME) 343*16kB (UME) 1*32kB (U) 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB (M) 0*4096kB = 13448kB Node 0 Normal: 1*4kB (U) 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 4kB Node 1 Normal: 91*4kB (E) 32*8kB (E) 5*16kB (E) 4*32kB (UMEH) 1*64kB (E) 1*128kB (E) 2*256kB (UE) 2*512kB (UM) 1*1024kB (M) 4*2048kB (UME) 2*4096kB (M) = 19964kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB __alloc_pages_nodemask+0x638/0x900 mm/page_alloc.c:4765 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 247 total pagecache pages __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] kmem_getpages mm/slab.c:1366 [inline] cache_grow_begin+0x90/0xd20 mm/slab.c:2599 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB fallback_alloc+0x1fd/0x2d0 mm/slab.c:3146 Total swap = 0kB 1965979 pages RAM ____cache_alloc_node+0x1bc/0x1d0 mm/slab.c:3214 0 pages HighMem/MovableOnly 341179 pages reserved 0 pages cma reserved slab_alloc_node mm/slab.c:3254 [inline] kmem_cache_alloc_node+0xe3/0x740 mm/slab.c:3574 aoe: skb alloc failure syz-fuzzer: page allocation failure: order:0, mode:0x40a20(GFP_ATOMIC|__GFP_COMP), nodemask=(null),cpuset=/,mems_allowed=0-1 __alloc_skb+0xd5/0x5e0 net/core/skbuff.c:197 alloc_skb include/linux/skbuff.h:1049 [inline] ndisc_alloc_skb+0x13c/0x340 net/ipv6/ndisc.c:417 ndisc_send_rs+0x32b/0x6d0 net/ipv6/ndisc.c:683 addrconf_rs_timer+0x30f/0x680 net/ipv6/addrconf.c:3879 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x6c3/0x1790 kernel/time/timer.c:1786 __do_softirq+0x262/0x98c kernel/softirq.c:292 run_ksoftirqd kernel/softirq.c:603 [inline] run_ksoftirqd+0x8e/0x110 kernel/softirq.c:595 smpboot_thread_fn+0x6a3/0xa40 kernel/smpboot.c:165 kthread+0x361/0x430 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 CPU: 0 PID: 8726 Comm: syz-fuzzer Not tainted 5.4.0-rc1+ #0 ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: ksoftirqd/1: page allocation failure: order:0, mode:0x40a20(GFP_ATOMIC|__GFP_COMP), nodemask=(null),cpuset=/,mems_allowed=0-1 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 warn_alloc.cold+0x87/0x17f mm/page_alloc.c:3757 __alloc_pages_slowpath+0x2380/0x2910 mm/page_alloc.c:4657 __alloc_pages_nodemask+0x638/0x900 mm/page_alloc.c:4765 __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] kmem_getpages mm/slab.c:1366 [inline] cache_grow_begin+0x90/0xd20 mm/slab.c:2599 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3146 ____cache_alloc_node+0x1bc/0x1d0 mm/slab.c:3214 slab_alloc_node mm/slab.c:3254 [inline] kmem_cache_alloc_node+0xe3/0x740 mm/slab.c:3574 __alloc_skb+0xd5/0x5e0 net/core/skbuff.c:197 alloc_skb include/linux/skbuff.h:1049 [inline] new_skb+0x28/0x1d0 drivers/block/aoe/aoecmd.c:67 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline] aoecmd_cfg+0x1b5/0x640 drivers/block/aoe/aoecmd.c:1372 discover_timer+0x4e/0x60 drivers/block/aoe/aoemain.c:24 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404