kthread+0x354/0x420 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 CPU: 1 PID: 7765 Comm: syz-fuzzer Not tainted 4.19.90-syzkaller #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 rcu: INFO: rcu_preempt self-detected stall on CPU Call Trace: rcu: 0-...!: (883 ticks this GP) idle=c12/1/0x4000000000000002 softirq=157765/157765 fqs=0 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 warn_alloc.cold+0x7b/0x173 mm/page_alloc.c:3455 __alloc_pages_slowpath+0x2214/0x2870 mm/page_alloc.c:4315 rcu: (t=10500 jiffies g=154337 q=4) rcu: rcu_preempt kthread starved for 10500 jiffies! g154337 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 rcu: RCU grace-period kthread stack dump: rcu_preempt R running task 29424 10 2 0x80000000 Call Trace: __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417 context_switch kernel/sched/core.c:2826 [inline] __schedule+0x866/0x1dc0 kernel/sched/core.c:3515 __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+0x91/0x8c0 mm/slab.c:2682 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3224 schedule+0x92/0x1c0 kernel/sched/core.c:3559 ____cache_alloc_node+0x1be/0x1e0 mm/slab.c:3292 schedule_timeout+0x4db/0xfc0 kernel/time/timer.c:1806 slab_alloc_node mm/slab.c:3332 [inline] kmem_cache_alloc_node+0xe3/0x710 mm/slab.c:3647 __alloc_skb+0xd5/0x5f0 net/core/skbuff.c:193 rcu_gp_kthread+0xd5c/0x2190 kernel/rcu/tree.c:2202 alloc_skb include/linux/skbuff.h:995 [inline] nlmsg_new include/net/netlink.h:511 [inline] __br_mdb_notify+0x2af/0xe40 net/bridge/br_mdb.c:377 kthread+0x354/0x420 kernel/kthread.c:246 br_mdb_notify+0x20d/0x2d0 net/bridge/br_mdb.c:410 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 NMI backtrace for cpu 0 br_multicast_group_expired+0x141/0x410 net/bridge/br_multicast.c:253 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers kernel/time/timer.c:1684 [inline] __run_timers kernel/time/timer.c:1652 [inline] run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697 __do_softirq+0x25c/0x921 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:lock_acquire+0x1ea/0x3f0 kernel/locking/lockdep.c:3906 Code: 7c 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 c4 01 00 00 48 83 3d 7a dd 9f 07 00 0f 84 38 01 00 00 48 8b 7d c8 57 9d <0f> 1f 44 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 65 8b RSP: 0000:ffff88808129f200 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff11e4b79 RBX: ffff8880a4e04280 RCX: 0000000099990a23 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000282 RBP: ffff88808129f248 R08: 0000000000000000 R09: 0000000000000004 R10: ffff8880a4e04ba0 R11: 00000000442821ed R12: ffffffff88f97260 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002 rcu_lock_acquire include/linux/rcupdate.h:242 [inline] rcu_read_lock_sched include/linux/rcupdate.h:741 [inline] percpu_ref_put_many+0x37/0x190 include/linux/percpu-refcount.h:279 percpu_ref_put include/linux/percpu-refcount.h:300 [inline] css_put include/linux/cgroup.h:392 [inline] mem_cgroup_iter+0x907/0xac0 mm/memcontrol.c:1009 shrink_node+0x402/0x1450 mm/vmscan.c:2760 shrink_zones mm/vmscan.c:2966 [inline] do_try_to_free_pages+0x3cb/0x11c0 mm/vmscan.c:3024 try_to_free_pages+0x2ee/0x7f0 mm/vmscan.c:3239 __perform_reclaim mm/page_alloc.c:3798 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:3819 [inline] __alloc_pages_slowpath+0x990/0x2870 mm/page_alloc.c:4209 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2197 alloc_pages include/linux/gfp.h:532 [inline] __page_cache_alloc mm/filemap.c:969 [inline] __page_cache_alloc+0x2bd/0x450 mm/filemap.c:954 page_cache_read mm/filemap.c:2408 [inline] filemap_fault+0xfeb/0x1f00 mm/filemap.c:2592 ext4_filemap_fault+0x83/0xaf fs/ext4/inode.c:6341 __do_fault+0x111/0x480 mm/memory.c:3269 do_read_fault mm/memory.c:3681 [inline] do_fault mm/memory.c:3810 [inline] handle_pte_fault mm/memory.c:4041 [inline] __handle_mm_fault+0x2d78/0x3f80 mm/memory.c:4165 handle_mm_fault+0x1b5/0x690 mm/memory.c:4202 __do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1390 do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1465 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1204 RIP: 0033:0x45b153 Code: Bad RIP value. RSP: 002b:000000c420039ea0 EFLAGS: 00010206 RAX: ffffffffffffff92 RBX: 000000003b9826de RCX: 000000000045b153 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001911220 RBP: 000000c420039ee8 R08: 0000000000000000 R09: 0000000000000000 R10: 000000c420039ed8 R11: 0000000000000206 R12: 00000120f6001615 R13: 0000000000000001 R14: 0000000000000013 R15: 0000000000000100 warn_alloc_show_mem: 1 callbacks suppressed CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 4.19.90-syzkaller #0 Mem-Info: active_anon:103702 inactive_anon:189 isolated_anon:0 active_file:12 inactive_file:12 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:10112 slab_unreclaimable:1400376 mapped:52226 shmem:245 pagetables:1047 bounce:0 free:10883 free_pcp:183 free_cma:0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Node 0 active_anon:414556kB inactive_anon:756kB active_file:48kB inactive_file:44kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:208904kB dirty:0kB writeback:0kB shmem:980kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 118784kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes Call Trace: Node 1 active_anon:252kB inactive_anon:0kB active_file:0kB inactive_file:4kB 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 Node 0 DMA free:10260kB 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 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 lowmem_reserve[]: 0 2545 2546 2546 2546 nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101 Node 0 DMA32 free:13280kB min:36168kB low:45208kB high:54248kB active_anon:414556kB inactive_anon:756kB active_file:48kB inactive_file:44kB unevictable:0kB writepending:0kB present:3129332kB managed:2609796kB mlocked:0kB kernel_stack:7232kB pagetables:4188kB bounce:0kB free_pcp:264kB local_pcp:264kB free_cma:0kB lowmem_reserve[]: 0 0 1 1 1 nmi_trigger_cpumask_backtrace+0x1b0/0x1f8 lib/nmi_backtrace.c:62 Node 0 Normal free:0kB min:12kB low:12kB high:12kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:786432kB managed:1140kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 lowmem_reserve[]: 0 0 0 0 0 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline] rcu_dump_cpu_stacks+0x189/0x1d5 kernel/rcu/tree.c:1340 Node 1 Normal free:19992kB min:53704kB low:67128kB high:80552kB active_anon:252kB inactive_anon:0kB active_file:0kB inactive_file:4kB unevictable:0kB writepending:0kB present:3932160kB managed:3870168kB mlocked:0kB kernel_stack:32kB pagetables:0kB bounce:0kB free_pcp:468kB local_pcp:220kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 0 print_cpu_stall kernel/rcu/tree.c:1478 [inline] check_cpu_stall kernel/rcu/tree.c:1550 [inline] __rcu_pending kernel/rcu/tree.c:3293 [inline] rcu_pending kernel/rcu/tree.c:3336 [inline] rcu_check_callbacks.cold+0x5e3/0xd90 kernel/rcu/tree.c:2682 Node 0 DMA: 1*4kB (U) 0*8kB 1*16kB (U) 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB (M) 2*4096kB (M) = 10260kB Node 0 DMA32: 270*4kB (MEH) 736*8kB (UMEH) 247*16kB (UMH) 64*32kB (UMH) 6*64kB (H) 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 13352kB update_process_times+0x32/0x80 kernel/time/timer.c:1638 Node 0 Normal: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB tick_sched_handle+0xa2/0x190 kernel/time/tick-sched.c:164 Node 1 Normal: 4*4kB (ME) 5*8kB (ME) 2*16kB (M) 6*32kB (UME) 2*64kB (ME) 3*128kB (UE) 1*256kB (U) 3*512kB (ME) 3*1024kB (UM) 1*2048kB (U) 3*4096kB (M) = 19992kB tick_sched_timer+0x47/0x130 kernel/time/tick-sched.c:1274 Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB __run_hrtimer kernel/time/hrtimer.c:1398 [inline] __hrtimer_run_queues+0x33b/0xdc0 kernel/time/hrtimer.c:1460 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 269 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 hrtimer_interrupt+0x314/0x770 kernel/time/hrtimer.c:1518 Free swap = 0kB Total swap = 0kB local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1067 [inline] smp_apic_timer_interrupt+0x111/0x550 arch/x86/kernel/apic/apic.c:1092 1965979 pages RAM apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893 0 pages HighMem/MovableOnly 341726 pages reserved 0 pages cma reserved RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:console_unlock+0xf3c/0x10d0 kernel/printk/printk.c:2433 syz-fuzzer: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) Code: fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 cb 00 00 00 48 83 3d 0d fe 9c 07 00 0f 84 b6 00 00 00 e8 7a e6 15 00 48 8b 7d 98 57 9d <0f> 1f 44 00 00 e9 15 f9 ff ff 48 8b 7d b0 e8 21 7c 4d 00 e9 9b f3 syz-fuzzer cpuset=/ mems_allowed=0-1 RSP: 0000:ffff8880aa377860 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13 RAX: ffff8880aa36a240 RBX: 0000000000000200 RCX: 1ffff1101546d55c RDX: 0000000000000100 RSI: ffffffff81555dc6 RDI: 0000000000000206 RBP: ffff8880aa3778e8 R08: ffff8880aa36a240 R09: ffff8880aa36aae0 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 R13: ffffffff84627a00 R14: 0000000000000048 R15: ffffffff89655ff0 vprintk_emit+0x280/0x6d0 kernel/printk/printk.c:1937 vprintk_default+0x28/0x30 kernel/printk/printk.c:1979 vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:398 printk+0xba/0xed kernel/printk/printk.c:2012 ndisc_alloc_skb net/ipv6/ndisc.c:405 [inline] ndisc_alloc_skb.cold+0x18/0x1d net/ipv6/ndisc.c:395 ndisc_send_rs+0x35f/0x6e0 net/ipv6/ndisc.c:669 addrconf_rs_timer+0x30f/0x680 net/ipv6/addrconf.c:3825 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers kernel/time/timer.c:1684 [inline] __run_timers kernel/time/timer.c:1652 [inline] run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697 __do_softirq+0x25c/0x921 kernel/softirq.c:292 run_ksoftirqd kernel/softirq.c:653 [inline] run_ksoftirqd+0x8e/0x110 kernel/softirq.c:645 smpboot_thread_fn+0x6a3/0xa30 kernel/smpboot.c:164 kthread+0x354/0x420 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 CPU: 1 PID: 7765 Comm: syz-fuzzer Not tainted 4.19.90-syzkaller #0 Sending NMI from CPU 0 to CPUs 1: Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 NMI backtrace for cpu 1 CPU: 1 PID: 7765 Comm: syz-fuzzer Not tainted 4.19.90-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x50 kernel/kcov.c:94 Code: 41 bc f4 ff ff ff e8 83 64 ea ff 48 c7 05 54 29 5e 09 00 00 00 00 e9 96 e9 ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <55> 48 89 e5 48 8b 75 08 65 48 8b 04 25 40 ee 01 00 65 8b 15 78 a9 RSP: 0000:ffff8880ae906e50 EFLAGS: 00000046 RAX: 0000000000000000 RBX: ffffffff87ab7f41 RCX: 0000000000000000 RDX: 0000000000000100 RSI: ffffffff87472b14 RDI: 0000000000000005 RBP: ffff8880ae906f08 R08: ffff8880a4e04280 R09: fffffbfff1589cdd R10: fffffbfff1589cdc R11: ffffffff8ac4e6e0 R12: ffff8880ae906f88 R13: ffffffff87ab7f43 R14: ffff8880ae906ee0 R15: 0000000000000035 FS: 000000c420040490(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000045b129 CR3: 000000008e442000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: vsnprintf+0x17e/0x19a0 lib/vsprintf.c:2245 sprintf+0xc0/0x100 lib/vsprintf.c:2495 print_time kernel/printk/printk.c:1236 [inline] print_prefix+0x386/0x3f0 kernel/printk/printk.c:1259 msg_print_text+0xc9/0x1c0 kernel/printk/printk.c:1286 console_unlock+0x3a5/0x10d0 kernel/printk/printk.c:2403 vprintk_emit+0x280/0x6d0 kernel/printk/printk.c:1937 vprintk_default+0x28/0x30 kernel/printk/printk.c:1979 vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:398 printk+0xba/0xed kernel/printk/printk.c:2012 dump_stack_print_info.cold+0x1b/0x20 lib/dump_stack.c:56 __dump_stack lib/dump_stack.c:76 [inline] dump_stack+0x18e/0x210 lib/dump_stack.c:118 warn_alloc.cold+0x7b/0x173 mm/page_alloc.c:3455 __alloc_pages_slowpath+0x2214/0x2870 mm/page_alloc.c:4315 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417 __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+0x91/0x8c0 mm/slab.c:2682 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3224 ____cache_alloc_node+0x1be/0x1e0 mm/slab.c:3292 slab_alloc_node mm/slab.c:3332 [inline] kmem_cache_alloc_node+0xe3/0x710 mm/slab.c:3647 __alloc_skb+0xd5/0x5f0 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:995 [inline] nlmsg_new include/net/netlink.h:511 [inline] __br_mdb_notify+0x2af/0xe40 net/bridge/br_mdb.c:377 br_mdb_notify+0x20d/0x2d0 net/bridge/br_mdb.c:410 br_multicast_group_expired+0x141/0x410 net/bridge/br_multicast.c:253 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers kernel/time/timer.c:1684 [inline] __run_timers kernel/time/timer.c:1652 [inline] run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697 __do_softirq+0x25c/0x921 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:lock_acquire+0x1ea/0x3f0 kernel/locking/lockdep.c:3906 Code: 7c 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 c4 01 00 00 48 83 3d 7a dd 9f 07 00 0f 84 38 01 00 00 48 8b 7d c8 57 9d <0f> 1f 44 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 65 8b RSP: 0000:ffff88808129f200 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff11e4b79 RBX: ffff8880a4e04280 RCX: 0000000099990a23 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000282 RBP: ffff88808129f248 R08: 0000000000000000 R09: 0000000000000004 R10: ffff8880a4e04ba0 R11: 00000000442821ed R12: ffffffff88f97260 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002 rcu_lock_acquire include/linux/rcupdate.h:242 [inline] rcu_read_lock_sched include/linux/rcupdate.h:741 [inline] percpu_ref_put_many+0x37/0x190 include/linux/percpu-refcount.h:279 percpu_ref_put include/linux/percpu-refcount.h:300 [inline] css_put include/linux/cgroup.h:392 [inline] mem_cgroup_iter+0x907/0xac0 mm/memcontrol.c:1009 shrink_node+0x402/0x1450 mm/vmscan.c:2760 shrink_zones mm/vmscan.c:2966 [inline] do_try_to_free_pages+0x3cb/0x11c0 mm/vmscan.c:3024 try_to_free_pages+0x2ee/0x7f0 mm/vmscan.c:3239 __perform_reclaim mm/page_alloc.c:3798 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:3819 [inline] __alloc_pages_slowpath+0x990/0x2870 mm/page_alloc.c:4209 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2197 alloc_pages include/linux/gfp.h:532 [inline] __page_cache_alloc mm/filemap.c:969 [inline] __page_cache_alloc+0x2bd/0x450 mm/filemap.c:954 page_cache_read mm/filemap.c:2408 [inline] filemap_fault+0xfeb/0x1f00 mm/filemap.c:2592 ext4_filemap_fault+0x83/0xaf fs/ext4/inode.c:6341 __do_fault+0x111/0x480 mm/memory.c:3269 do_read_fault mm/memory.c:3681 [inline] do_fault mm/memory.c:3810 [inline] handle_pte_fault mm/memory.c:4041 [inline] __handle_mm_fault+0x2d78/0x3f80 mm/memory.c:4165 handle_mm_fault+0x1b5/0x690 mm/memory.c:4202 __do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1390 do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1465 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1204 RIP: 0033:0x45b153 Code: Bad RIP value. RSP: 002b:000000c420039ea0 EFLAGS: 00010206 RAX: ffffffffffffff92 RBX: 000000003b9826de RCX: 000000000045b153 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001911220 RBP: 000000c420039ee8 R08: 0000000000000000 R09: 0000000000000000 R10: 000000c420039ed8 R11: 0000000000000206 R12: 00000120f6001615 R13: 0000000000000001 R14: 0000000000000013 R15: 0000000000000100 ksoftirqd/0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) Call Trace: ksoftirqd/0 cpuset=/ mems_allowed=0-1 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 warn_alloc.cold+0x7b/0x173 mm/page_alloc.c:3455 __alloc_pages_slowpath+0x2214/0x2870 mm/page_alloc.c:4315 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417 __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+0x91/0x8c0 mm/slab.c:2682 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3224 ____cache_alloc_node+0x1be/0x1e0 mm/slab.c:3292 slab_alloc_node mm/slab.c:3332 [inline] kmem_cache_alloc_node+0xe3/0x710 mm/slab.c:3647 __alloc_skb+0xd5/0x5f0 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:995 [inline] nlmsg_new include/net/netlink.h:511 [inline] __br_mdb_notify+0x2af/0xe40 net/bridge/br_mdb.c:377 br_mdb_notify+0x20d/0x2d0 net/bridge/br_mdb.c:410 br_multicast_group_expired+0x141/0x410 net/bridge/br_multicast.c:253 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers kernel/time/timer.c:1684 [inline] __run_timers kernel/time/timer.c:1652 [inline] run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697 __do_softirq+0x25c/0x921 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:lock_acquire+0x1ea/0x3f0 kernel/locking/lockdep.c:3906 Code: 7c 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 c4 01 00 00 48 83 3d 7a dd 9f 07 00 0f 84 38 01 00 00 48 8b 7d c8 57 9d <0f> 1f 44 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 65 8b RSP: 0000:ffff88808129f200 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff11e4b79 RBX: ffff8880a4e04280 RCX: 0000000099990a23 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000282 RBP: ffff88808129f248 R08: 0000000000000000 R09: 0000000000000004 R10: ffff8880a4e04ba0 R11: 00000000442821ed R12: ffffffff88f97260 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002 rcu_lock_acquire include/linux/rcupdate.h:242 [inline] rcu_read_lock_sched include/linux/rcupdate.h:741 [inline] percpu_ref_put_many+0x37/0x190 include/linux/percpu-refcount.h:279 percpu_ref_put include/linux/percpu-refcount.h:300 [inline] css_put include/linux/cgroup.h:392 [inline] mem_cgroup_iter+0x907/0xac0 mm/memcontrol.c:1009 shrink_node+0x402/0x1450 mm/vmscan.c:2760 shrink_zones mm/vmscan.c:2966 [inline] do_try_to_free_pages+0x3cb/0x11c0 mm/vmscan.c:3024 try_to_free_pages+0x2ee/0x7f0 mm/vmscan.c:3239 __perform_reclaim mm/page_alloc.c:3798 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:3819 [inline] __alloc_pages_slowpath+0x990/0x2870 mm/page_alloc.c:4209 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2197 alloc_pages include/linux/gfp.h:532 [inline] __page_cache_alloc mm/filemap.c:969 [inline] __page_cache_alloc+0x2bd/0x450 mm/filemap.c:954 page_cache_read mm/filemap.c:2408 [inline] filemap_fault+0xfeb/0x1f00 mm/filemap.c:2592 ext4_filemap_fault+0x83/0xaf fs/ext4/inode.c:6341 __do_fault+0x111/0x480 mm/memory.c:3269 do_read_fault mm/memory.c:3681 [inline] do_fault mm/memory.c:3810 [inline] handle_pte_fault mm/memory.c:4041 [inline] __handle_mm_fault+0x2d78/0x3f80 mm/memory.c:4165 handle_mm_fault+0x1b5/0x690 mm/memory.c:4202 __do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1390 do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1465 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1204 RIP: 0033:0x45b153 Code: Bad RIP value. RSP: 002b:000000c420039ea0 EFLAGS: 00010206 RAX: ffffffffffffff92 RBX: 000000003b9826de RCX: 000000000045b153 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001911220 RBP: 000000c420039ee8 R08: 0000000000000000 R09: 0000000000000000 R10: 000000c420039ed8 R11: 0000000000000206 R12: 00000120f6001615 R13: 0000000000000001 R14: 0000000000000013 R15: 0000000000000100 Mem-Info: CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 4.19.90-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 active_anon:103702 inactive_anon:189 isolated_anon:0 active_file:12 inactive_file:12 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:10112 slab_unreclaimable:1400376 mapped:52226 shmem:245 pagetables:1047 bounce:0 free:10883 free_pcp:183 free_cma:0 Call Trace: Node 0 active_anon:414556kB inactive_anon:756kB active_file:48kB inactive_file:44kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:208904kB dirty:0kB writeback:0kB shmem:980kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 118784kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 Node 1 active_anon:252kB inactive_anon:0kB active_file:0kB inactive_file:4kB 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+0x7b/0x173 mm/page_alloc.c:3455 Node 0 DMA free:10260kB 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 2545 2546 2546 2546 Node 0 DMA32 free:13280kB min:36168kB low:45208kB high:54248kB active_anon:414556kB inactive_anon:756kB active_file:48kB inactive_file:44kB unevictable:0kB writepending:0kB present:3129332kB managed:2609796kB mlocked:0kB kernel_stack:7232kB pagetables:4188kB bounce:0kB free_pcp:264kB local_pcp:264kB free_cma:0kB lowmem_reserve[]: 0 0 1 1 1 Node 0 Normal free:0kB min:12kB low:12kB high:12kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:786432kB managed:1140kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB __alloc_pages_slowpath+0x2214/0x2870 mm/page_alloc.c:4315 lowmem_reserve[]: 0 0 0 0 0 Node 1 Normal free:19992kB min:53704kB low:67128kB high:80552kB active_anon:252kB inactive_anon:0kB active_file:0kB inactive_file:4kB unevictable:0kB writepending:0kB present:3932160kB managed:3870168kB mlocked:0kB kernel_stack:32kB pagetables:0kB bounce:0kB free_pcp:468kB local_pcp:220kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 0 Node 0 DMA: 1*4kB (U) 0*8kB 1*16kB (U) 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB (M) 2*4096kB (M) = 10260kB Node 0 DMA32: 270*4kB (MEH) 736*8kB (UMEH) 247*16kB (UMH) 64*32kB (UMH) 6*64kB (H) 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 13352kB Node 0 Normal: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417 Node 1 Normal: 4*4kB (ME) 5*8kB (ME) 2*16kB (M) 6*32kB (UME) 2*64kB (ME) 3*128kB (UE) 1*256kB (U) 3*512kB (ME) 3*1024kB (UM) 1*2048kB (U) 3*4096kB (M) = 19992kB 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:496 [inline] __alloc_pages_node include/linux/gfp.h:509 [inline] kmem_getpages mm/slab.c:1412 [inline] cache_grow_begin+0x91/0x8c0 mm/slab.c:2682 Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB 269 total pagecache pages 0 pages in swap cache fallback_alloc+0x1fd/0x2d0 mm/slab.c:3224 Swap cache stats: add 0, delete 0, find 0/0 ____cache_alloc_node+0x1be/0x1e0 mm/slab.c:3292 Free swap = 0kB slab_alloc_node mm/slab.c:3332 [inline] kmem_cache_alloc_node+0xe3/0x710 mm/slab.c:3647 Total swap = 0kB 1965979 pages RAM 0 pages HighMem/MovableOnly 341726 pages reserved __alloc_skb+0xd5/0x5f0 net/core/skbuff.c:193 0 pages cma reserved INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.611 msecs syz-fuzzer: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) alloc_skb include/linux/skbuff.h:995 [inline] ndisc_alloc_skb+0x13c/0x340 net/ipv6/ndisc.c:403 syz-fuzzer cpuset=/ mems_allowed=0-1 ndisc_send_rs+0x7c/0x6e0 net/ipv6/ndisc.c:669 addrconf_rs_timer+0x30f/0x680 net/ipv6/addrconf.c:3825 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers kernel/time/timer.c:1684 [inline] __run_timers kernel/time/timer.c:1652 [inline] run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697 __do_softirq+0x25c/0x921 kernel/softirq.c:292 run_ksoftirqd kernel/softirq.c:653 [inline] run_ksoftirqd+0x8e/0x110 kernel/softirq.c:645 smpboot_thread_fn+0x6a3/0xa30 kernel/smpboot.c:164 kthread+0x354/0x420 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 CPU: 1 PID: 7765 Comm: syz-fuzzer Not tainted 4.19.90-syzkaller #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+0x197/0x210 lib/dump_stack.c:118 warn_alloc.cold+0x7b/0x173 mm/page_alloc.c:3455 ksoftirqd/0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) ksoftirqd/0 cpuset=/ mems_allowed=0-1 __alloc_pages_slowpath+0x2214/0x2870 mm/page_alloc.c:4315 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417 __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+0x91/0x8c0 mm/slab.c:2682 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3224 ____cache_alloc_node+0x1be/0x1e0 mm/slab.c:3292 slab_alloc_node mm/slab.c:3332 [inline] kmem_cache_alloc_node+0xe3/0x710 mm/slab.c:3647 __alloc_skb+0xd5/0x5f0 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:995 [inline] ndisc_alloc_skb+0x13c/0x340 net/ipv6/ndisc.c:403 ndisc_send_rs+0x35f/0x6e0 net/ipv6/ndisc.c:669 addrconf_rs_timer+0x30f/0x680 net/ipv6/addrconf.c:3825 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers kernel/time/timer.c:1684 [inline] __run_timers kernel/time/timer.c:1652 [inline] run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697 __do_softirq+0x25c/0x921 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:lock_acquire+0x1ea/0x3f0 kernel/locking/lockdep.c:3906 Code: 7c 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 c4 01 00 00 48 83 3d 7a dd 9f 07 00 0f 84 38 01 00 00 48 8b 7d c8 57 9d <0f> 1f 44 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 65 8b RSP: 0000:ffff88808129f200 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff11e4b79 RBX: ffff8880a4e04280 RCX: 0000000099990a23 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000282 RBP: ffff88808129f248 R08: 0000000000000000 R09: 0000000000000004 R10: ffff8880a4e04ba0 R11: 00000000442821ed R12: ffffffff88f97260 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002 rcu_lock_acquire include/linux/rcupdate.h:242 [inline] rcu_read_lock_sched include/linux/rcupdate.h:741 [inline] percpu_ref_put_many+0x37/0x190 include/linux/percpu-refcount.h:279 percpu_ref_put include/linux/percpu-refcount.h:300 [inline] css_put include/linux/cgroup.h:392 [inline] mem_cgroup_iter+0x907/0xac0 mm/memcontrol.c:1009 shrink_node+0x402/0x1450 mm/vmscan.c:2760 shrink_zones mm/vmscan.c:2966 [inline] do_try_to_free_pages+0x3cb/0x11c0 mm/vmscan.c:3024 try_to_free_pages+0x2ee/0x7f0 mm/vmscan.c:3239 __perform_reclaim mm/page_alloc.c:3798 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:3819 [inline] __alloc_pages_slowpath+0x990/0x2870 mm/page_alloc.c:4209 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2197 alloc_pages include/linux/gfp.h:532 [inline] __page_cache_alloc mm/filemap.c:969 [inline] __page_cache_alloc+0x2bd/0x450 mm/filemap.c:954 page_cache_read mm/filemap.c:2408 [inline] filemap_fault+0xfeb/0x1f00 mm/filemap.c:2592 ext4_filemap_fault+0x83/0xaf fs/ext4/inode.c:6341 __do_fault+0x111/0x480 mm/memory.c:3269 do_read_fault mm/memory.c:3681 [inline] do_fault mm/memory.c:3810 [inline] handle_pte_fault mm/memory.c:4041 [inline] __handle_mm_fault+0x2d78/0x3f80 mm/memory.c:4165 handle_mm_fault+0x1b5/0x690 mm/memory.c:4202 __do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1390 do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1465 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1204 RIP: 0033:0x45b153 Code: Bad RIP value. RSP: 002b:000000c420039ea0 EFLAGS: 00010206 RAX: ffffffffffffff92 RBX: 000000003b9826de RCX: 000000000045b153 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001911220 RBP: 000000c420039ee8 R08: 0000000000000000 R09: 0000000000000000 R10: 000000c420039ed8 R11: 0000000000000206 R12: 00000120f6001615 R13: 0000000000000001 R14: 0000000000000013 R15: 0000000000000100 warn_alloc_show_mem: 1 callbacks suppressed CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 4.19.90-syzkaller #0 Mem-Info: active_anon:103702 inactive_anon:189 isolated_anon:0 active_file:12 inactive_file:12 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:10112 slab_unreclaimable:1400376 mapped:52226 shmem:245 pagetables:1047 bounce:0 free:10883 free_pcp:183 free_cma:0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: Node 0 active_anon:414556kB inactive_anon:756kB active_file:48kB inactive_file:44kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:208904kB dirty:0kB writeback:0kB shmem:980kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 118784kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 Node 1 active_anon:252kB inactive_anon:0kB active_file:0kB inactive_file:4kB 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+0x7b/0x173 mm/page_alloc.c:3455 Node 0 DMA free:10260kB 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 2545 2546 2546 2546 Node 0 DMA32 free:13280kB min:36168kB low:45208kB high:54248kB active_anon:414556kB inactive_anon:756kB active_file:48kB inactive_file:44kB unevictable:0kB writepending:0kB present:3129332kB managed:2609796kB mlocked:0kB kernel_stack:7232kB pagetables:4188kB bounce:0kB free_pcp:264kB local_pcp:264kB free_cma:0kB lowmem_reserve[]: 0 0 1 1 1 Node 0 Normal free:0kB min:12kB low:12kB high:12kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:786432kB managed:1140kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB __alloc_pages_slowpath+0x2214/0x2870 mm/page_alloc.c:4315 lowmem_reserve[]: 0 0 0 0 0 Node 1 Normal free:19992kB min:53704kB low:67128kB high:80552kB active_anon:252kB inactive_anon:0kB active_file:0kB inactive_file:4kB unevictable:0kB writepending:0kB present:3932160kB managed:3870168kB mlocked:0kB kernel_stack:32kB pagetables:0kB bounce:0kB free_pcp:468kB local_pcp:220kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 0 Node 0 DMA: 1*4kB (U) 0*8kB 1*16kB (U) 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB (M) 2*4096kB (M) = 10260kB Node 0 DMA32: 270*4kB (MEH) 736*8kB (UMEH) 247*16kB (UMH) 64*32kB (UMH) 6*64kB (H) 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 13352kB Node 0 Normal: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417 Node 1 Normal: 4*4kB (ME) 5*8kB (ME) 2*16kB (M) 6*32kB (UME) 2*64kB (ME) 3*128kB (UE) 1*256kB (U) 3*512kB (ME) 3*1024kB (UM) 1*2048kB (U) 3*4096kB (M) = 19992kB 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:496 [inline] __alloc_pages_node include/linux/gfp.h:509 [inline] kmem_getpages mm/slab.c:1412 [inline] cache_grow_begin+0x91/0x8c0 mm/slab.c:2682 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 269 total pagecache pages fallback_alloc+0x1fd/0x2d0 mm/slab.c:3224 0 pages in swap cache ____cache_alloc_node+0x1be/0x1e0 mm/slab.c:3292 Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB slab_alloc_node mm/slab.c:3332 [inline] kmem_cache_alloc_node+0xe3/0x710 mm/slab.c:3647 Total swap = 0kB 1965979 pages RAM __alloc_skb+0xd5/0x5f0 net/core/skbuff.c:193 0 pages HighMem/MovableOnly 341726 pages reserved 0 pages cma reserved ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb syz-fuzzer: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) alloc_skb include/linux/skbuff.h:995 [inline] ndisc_alloc_skb+0x13c/0x340 net/ipv6/ndisc.c:403 syz-fuzzer cpuset=/ mems_allowed=0-1 ndisc_send_rs+0x7c/0x6e0 net/ipv6/ndisc.c:669 addrconf_rs_timer+0x30f/0x680 net/ipv6/addrconf.c:3825 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers kernel/time/timer.c:1684 [inline] __run_timers kernel/time/timer.c:1652 [inline] run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697 __do_softirq+0x25c/0x921 kernel/softirq.c:292 run_ksoftirqd kernel/softirq.c:653 [inline] run_ksoftirqd+0x8e/0x110 kernel/softirq.c:645 smpboot_thread_fn+0x6a3/0xa30 kernel/smpboot.c:164 kthread+0x354/0x420 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 CPU: 1 PID: 7765 Comm: syz-fuzzer Not tainted 4.19.90-syzkaller #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+0x197/0x210 lib/dump_stack.c:118 warn_alloc.cold+0x7b/0x173 mm/page_alloc.c:3455 ksoftirqd/0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) ksoftirqd/0 cpuset=/ mems_allowed=0-1 __alloc_pages_slowpath+0x2214/0x2870 mm/page_alloc.c:4315 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417 __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+0x91/0x8c0 mm/slab.c:2682 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3224 ____cache_alloc_node+0x1be/0x1e0 mm/slab.c:3292 slab_alloc_node mm/slab.c:3332 [inline] kmem_cache_alloc_node+0xe3/0x710 mm/slab.c:3647 __alloc_skb+0xd5/0x5f0 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:995 [inline] ndisc_alloc_skb+0x13c/0x340 net/ipv6/ndisc.c:403 ndisc_send_rs+0x7c/0x6e0 net/ipv6/ndisc.c:669 addrconf_rs_timer+0x30f/0x680 net/ipv6/addrconf.c:3825 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers kernel/time/timer.c:1684 [inline] __run_timers kernel/time/timer.c:1652 [inline] run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697 __do_softirq+0x25c/0x921 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:lock_acquire+0x1ea/0x3f0 kernel/locking/lockdep.c:3906 Code: 7c 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 c4 01 00 00 48 83 3d 7a dd 9f 07 00 0f 84 38 01 00 00 48 8b 7d c8 57 9d <0f> 1f 44 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 65 8b RSP: 0000:ffff88808129f200 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff11e4b79 RBX: ffff8880a4e04280 RCX: 0000000099990a23 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000282 RBP: ffff88808129f248 R08: 0000000000000000 R09: 0000000000000004 R10: ffff8880a4e04ba0 R11: 00000000442821ed R12: ffffffff88f97260 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002 rcu_lock_acquire include/linux/rcupdate.h:242 [inline] rcu_read_lock_sched include/linux/rcupdate.h:741 [inline] percpu_ref_put_many+0x37/0x190 include/linux/percpu-refcount.h:279 percpu_ref_put include/linux/percpu-refcount.h:300 [inline] css_put include/linux/cgroup.h:392 [inline] mem_cgroup_iter+0x907/0xac0 mm/memcontrol.c:1009 shrink_node+0x402/0x1450 mm/vmscan.c:2760 shrink_zones mm/vmscan.c:2966 [inline] do_try_to_free_pages+0x3cb/0x11c0 mm/vmscan.c:3024 try_to_free_pages+0x2ee/0x7f0 mm/vmscan.c:3239 __perform_reclaim mm/page_alloc.c:3798 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:3819 [inline] __alloc_pages_slowpath+0x990/0x2870 mm/page_alloc.c:4209 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2197 alloc_pages include/linux/gfp.h:532 [inline] __page_cache_alloc mm/filemap.c:969 [inline] __page_cache_alloc+0x2bd/0x450 mm/filemap.c:954 page_cache_read mm/filemap.c:2408 [inline] filemap_fault+0xfeb/0x1f00 mm/filemap.c:2592 ext4_filemap_fault+0x83/0xaf fs/ext4/inode.c:6341 __do_fault+0x111/0x480 mm/memory.c:3269 do_read_fault mm/memory.c:3681 [inline] do_fault mm/memory.c:3810 [inline] handle_pte_fault mm/memory.c:4041 [inline] __handle_mm_fault+0x2d78/0x3f80 mm/memory.c:4165 handle_mm_fault+0x1b5/0x690 mm/memory.c:4202 __do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1390 do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1465 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1204 RIP: 0033:0x45b153 Code: Bad RIP value. RSP: 002b:000000c420039ea0 EFLAGS: 00010206 RAX: ffffffffffffff92 RBX: 000000003b9826de RCX: 000000000045b153 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001911220 RBP: 000000c420039ee8 R08: 0000000000000000 R09: 0000000000000000 R10: 000000c420039ed8 R11: 0000000000000206 R12: 00000120f6001615 R13: 0000000000000001 R14: 0000000000000013 R15: 0000000000000100 warn_alloc_show_mem: 1 callbacks suppressed CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 4.19.90-syzkaller #0 Mem-Info: active_anon:103702 inactive_anon:189 isolated_anon:0 active_file:12 inactive_file:12 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:10112 slab_unreclaimable:1400376 mapped:52226 shmem:245 pagetables:1047 bounce:0 free:10883 free_pcp:183 free_cma:0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Node 0 active_anon:414556kB inactive_anon:756kB active_file:48kB inactive_file:44kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:208904kB dirty:0kB writeback:0kB shmem:980kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 118784kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes Call Trace: Node 1 active_anon:252kB inactive_anon:0kB active_file:0kB inactive_file:4kB 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+0x197/0x210 lib/dump_stack.c:118 Node 0 DMA free:10260kB 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+0x7b/0x173 mm/page_alloc.c:3455 lowmem_reserve[]: 0 2545 2546 2546 2546 Node 0 DMA32 free:13280kB min:36168kB low:45208kB high:54248kB active_anon:414556kB inactive_anon:756kB active_file:48kB inactive_file:44kB unevictable:0kB writepending:0kB present:3129332kB managed:2609796kB mlocked:0kB kernel_stack:7232kB pagetables:4188kB bounce:0kB free_pcp:264kB local_pcp:264kB free_cma:0kB lowmem_reserve[]: 0 0 1 1 1 Node 0 Normal free:0kB min:12kB low:12kB high:12kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:786432kB managed:1140kB 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 __alloc_pages_slowpath+0x2214/0x2870 mm/page_alloc.c:4315 Node 1 Normal free:19992kB min:53704kB low:67128kB high:80552kB active_anon:252kB inactive_anon:0kB active_file:0kB inactive_file:4kB unevictable:0kB writepending:0kB present:3932160kB managed:3870168kB mlocked:0kB kernel_stack:32kB pagetables:0kB bounce:0kB free_pcp:468kB local_pcp:220kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 0 Node 0 DMA: 1*4kB (U) 0*8kB 1*16kB (U) 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB (M) 2*4096kB (M) = 10260kB Node 0 DMA32: 270*4kB (MEH) 736*8kB (UMEH) 247*16kB (UMH) 64*32kB (UMH) 6*64kB (H) 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 13352kB Node 0 Normal: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB Node 1 Normal: 4*4kB (ME) 5*8kB (ME) 2*16kB (M) 6*32kB (UME) 2*64kB (ME) 3*128kB (UE) 1*256kB (U) 3*512kB (ME) 3*1024kB (UM) 1*2048kB (U) 3*4096kB (M) = 19992kB __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417 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:496 [inline] __alloc_pages_node include/linux/gfp.h:509 [inline] kmem_getpages mm/slab.c:1412 [inline] cache_grow_begin+0x91/0x8c0 mm/slab.c:2682 Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB 269 total pagecache pages 0 pages in swap cache fallback_alloc+0x1fd/0x2d0 mm/slab.c:3224 Swap cache stats: add 0, delete 0, find 0/0 ____cache_alloc_node+0x1be/0x1e0 mm/slab.c:3292 Free swap = 0kB slab_alloc_node mm/slab.c:3332 [inline] kmem_cache_alloc_node+0xe3/0x710 mm/slab.c:3647 Total swap = 0kB 1965979 pages RAM 0 pages HighMem/MovableOnly 341726 pages reserved __alloc_skb+0xd5/0x5f0 net/core/skbuff.c:193 0 pages cma reserved ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb alloc_skb include/linux/skbuff.h:995 [inline] ndisc_alloc_skb+0x13c/0x340 net/ipv6/ndisc.c:403 syz-fuzzer: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) ndisc_send_rs+0x35f/0x6e0 net/ipv6/ndisc.c:669 syz-fuzzer cpuset=/ mems_allowed=0-1 addrconf_rs_timer+0x30f/0x680 net/ipv6/addrconf.c:3825 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers kernel/time/timer.c:1684 [inline] __run_timers kernel/time/timer.c:1652 [inline] run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697 __do_softirq+0x25c/0x921 kernel/softirq.c:292 run_ksoftirqd kernel/softirq.c:653 [inline] run_ksoftirqd+0x8e/0x110 kernel/softirq.c:645 smpboot_thread_fn+0x6a3/0xa30 kernel/smpboot.c:164 kthread+0x354/0x420 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 CPU: 1 PID: 7765 Comm: syz-fuzzer Not tainted 4.19.90-syzkaller #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+0x197/0x210 lib/dump_stack.c:118 warn_alloc.cold+0x7b/0x173 mm/page_alloc.c:3455 ksoftirqd/0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) ksoftirqd/0 cpuset=/ mems_allowed=0-1 __alloc_pages_slowpath+0x2214/0x2870 mm/page_alloc.c:4315 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417 __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+0x91/0x8c0 mm/slab.c:2682 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3224 ____cache_alloc_node+0x1be/0x1e0 mm/slab.c:3292 slab_alloc_node mm/slab.c:3332 [inline] kmem_cache_alloc_node+0xe3/0x710 mm/slab.c:3647 __alloc_skb+0xd5/0x5f0 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:995 [inline] ndisc_alloc_skb+0x13c/0x340 net/ipv6/ndisc.c:403 ndisc_send_rs+0x35f/0x6e0 net/ipv6/ndisc.c:669 addrconf_rs_timer+0x30f/0x680 net/ipv6/addrconf.c:3825 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers kernel/time/timer.c:1684 [inline] __run_timers kernel/time/timer.c:1652 [inline] run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697 __do_softirq+0x25c/0x921 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:lock_acquire+0x1ea/0x3f0 kernel/locking/lockdep.c:3906 Code: 7c 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 c4 01 00 00 48 83 3d 7a dd 9f 07 00 0f 84 38 01 00 00 48 8b 7d c8 57 9d <0f> 1f 44 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 65 8b RSP: 0000:ffff88808129f200 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff11e4b79 RBX: ffff8880a4e04280 RCX: 0000000099990a23 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000282 RBP: ffff88808129f248 R08: 0000000000000000 R09: 0000000000000004 R10: ffff8880a4e04ba0 R11: 00000000442821ed R12: ffffffff88f97260 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002 rcu_lock_acquire include/linux/rcupdate.h:242 [inline] rcu_read_lock_sched include/linux/rcupdate.h:741 [inline] percpu_ref_put_many+0x37/0x190 include/linux/percpu-refcount.h:279 percpu_ref_put include/linux/percpu-refcount.h:300 [inline] css_put include/linux/cgroup.h:392 [inline] mem_cgroup_iter+0x907/0xac0 mm/memcontrol.c:1009 shrink_node+0x402/0x1450 mm/vmscan.c:2760 shrink_zones mm/vmscan.c:2966 [inline] do_try_to_free_pages+0x3cb/0x11c0 mm/vmscan.c:3024 try_to_free_pages+0x2ee/0x7f0 mm/vmscan.c:3239 __perform_reclaim mm/page_alloc.c:3798 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:3819 [inline] __alloc_pages_slowpath+0x990/0x2870 mm/page_alloc.c:4209 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2197 alloc_pages include/linux/gfp.h:532 [inline] __page_cache_alloc mm/filemap.c:969 [inline] __page_cache_alloc+0x2bd/0x450 mm/filemap.c:954 page_cache_read mm/filemap.c:2408 [inline] filemap_fault+0xfeb/0x1f00 mm/filemap.c:2592 ext4_filemap_fault+0x83/0xaf fs/ext4/inode.c:6341 __do_fault+0x111/0x480 mm/memory.c:3269 do_read_fault mm/memory.c:3681 [inline] do_fault mm/memory.c:3810 [inline] handle_pte_fault mm/memory.c:4041 [inline] __handle_mm_fault+0x2d78/0x3f80 mm/memory.c:4165 handle_mm_fault+0x1b5/0x690 mm/memory.c:4202 __do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1390 do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1465 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1204 RIP: 0033:0x45b153 Code: Bad RIP value. RSP: 002b:000000c420039ea0 EFLAGS: 00010206 RAX: ffffffffffffff92 RBX: 000000003b9826de RCX: 000000000045b153 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001911220 RBP: 000000c420039ee8 R08: 0000000000000000 R09: 0000000000000000 R10: 000000c420039ed8 R11: 0000000000000206 R12: 00000120f6001615 R13: 0000000000000001 R14: 0000000000000013 R15: 0000000000000100 warn_alloc_show_mem: 1 callbacks suppressed CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 4.19.90-syzkaller #0 Mem-Info: active_anon:103702 inactive_anon:189 isolated_anon:0 active_file:12 inactive_file:12 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:10112 slab_unreclaimable:1400376 mapped:52226 shmem:245 pagetables:1047 bounce:0 free:10883 free_pcp:183 free_cma:0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Node 0 active_anon:414556kB inactive_anon:756kB active_file:48kB inactive_file:44kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:208904kB dirty:0kB writeback:0kB shmem:980kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 118784kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes Call Trace: Node 1 active_anon:252kB inactive_anon:0kB active_file:0kB inactive_file:4kB 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+0x197/0x210 lib/dump_stack.c:118 Node 0 DMA free:10260kB 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+0x7b/0x173 mm/page_alloc.c:3455 lowmem_reserve[]: 0 2545 2546 2546 2546 Node 0 DMA32 free:13280kB min:36168kB low:45208kB high:54248kB active_anon:414556kB inactive_anon:756kB active_file:48kB inactive_file:44kB unevictable:0kB writepending:0kB present:3129332kB managed:2609796kB mlocked:0kB kernel_stack:7232kB pagetables:4188kB bounce:0kB free_pcp:264kB local_pcp:264kB free_cma:0kB lowmem_reserve[]: 0 0 1 1 1 Node 0 Normal free:0kB min:12kB low:12kB high:12kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:786432kB managed:1140kB 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 __alloc_pages_slowpath+0x2214/0x2870 mm/page_alloc.c:4315 Node 1 Normal free:19992kB min:53704kB low:67128kB high:80552kB active_anon:252kB inactive_anon:0kB active_file:0kB inactive_file:4kB unevictable:0kB writepending:0kB present:3932160kB managed:3870168kB mlocked:0kB kernel_stack:32kB pagetables:0kB bounce:0kB free_pcp:468kB local_pcp:220kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 0 Node 0 DMA: 1*4kB (U) 0*8kB 1*16kB (U) 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB (M) 2*4096kB (M) = 10260kB Node 0 DMA32: 270*4kB (MEH) 736*8kB (UMEH) 247*16kB (UMH) 64*32kB (UMH) 6*64kB (H) 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 13352kB Node 0 Normal: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB Node 1 Normal: 4*4kB (ME) 5*8kB (ME) 2*16kB (M) 6*32kB (UME) 2*64kB (ME) 3*128kB (UE) 1*256kB (U) 3*512kB (ME) 3*1024kB (UM) 1*2048kB (U) 3*4096kB (M) = 19992kB __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417 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:496 [inline] __alloc_pages_node include/linux/gfp.h:509 [inline] kmem_getpages mm/slab.c:1412 [inline] cache_grow_begin+0x91/0x8c0 mm/slab.c:2682 Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB 269 total pagecache pages 0 pages in swap cache fallback_alloc+0x1fd/0x2d0 mm/slab.c:3224 Swap cache stats: add 0, delete 0, find 0/0 ____cache_alloc_node+0x1be/0x1e0 mm/slab.c:3292 Free swap = 0kB slab_alloc_node mm/slab.c:3332 [inline] kmem_cache_alloc_node+0xe3/0x710 mm/slab.c:3647 Total swap = 0kB 1965979 pages RAM 0 pages HighMem/MovableOnly 341726 pages reserved __alloc_skb+0xd5/0x5f0 net/core/skbuff.c:193 0 pages cma reserved ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb alloc_skb include/linux/skbuff.h:995 [inline] ndisc_alloc_skb+0x13c/0x340 net/ipv6/ndisc.c:403 syz-fuzzer: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) ndisc_send_rs+0x35f/0x6e0 net/ipv6/ndisc.c:669 syz-fuzzer cpuset=/ mems_allowed=0-1 addrconf_rs_timer+0x30f/0x680 net/ipv6/addrconf.c:3825 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers kernel/time/timer.c:1684 [inline] __run_timers kernel/time/timer.c:1652 [inline] run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697 __do_softirq+0x25c/0x921 kernel/softirq.c:292 run_ksoftirqd kernel/softirq.c:653 [inline] run_ksoftirqd+0x8e/0x110 kernel/softirq.c:645 smpboot_thread_fn+0x6a3/0xa30 kernel/smpboot.c:164 kthread+0x354/0x420 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 CPU: 1 PID: 7765 Comm: syz-fuzzer Not tainted 4.19.90-syzkaller #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/0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) ksoftirqd/0 cpuset=/ mems_allowed=0-1 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 warn_alloc.cold+0x7b/0x173 mm/page_alloc.c:3455 __alloc_pages_slowpath+0x2214/0x2870 mm/page_alloc.c:4315 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417 __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+0x91/0x8c0 mm/slab.c:2682 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3224 ____cache_alloc_node+0x1be/0x1e0 mm/slab.c:3292 slab_alloc_node mm/slab.c:3332 [inline] kmem_cache_alloc_node+0xe3/0x710 mm/slab.c:3647 __alloc_skb+0xd5/0x5f0 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:995 [inline] ndisc_alloc_skb+0x13c/0x340 net/ipv6/ndisc.c:403 ndisc_send_rs+0x35f/0x6e0 net/ipv6/ndisc.c:669 addrconf_rs_timer+0x30f/0x680 net/ipv6/addrconf.c:3825 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers kernel/time/timer.c:1684 [inline] __run_timers kernel/time/timer.c:1652 [inline] run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697 __do_softirq+0x25c/0x921 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:lock_acquire+0x1ea/0x3f0 kernel/locking/lockdep.c:3906 Code: 7c 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 c4 01 00 00 48 83 3d 7a dd 9f 07 00 0f 84 38 01 00 00 48 8b 7d c8 57 9d <0f> 1f 44 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 65 8b RSP: 0000:ffff88808129f200 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff11e4b79 RBX: ffff8880a4e04280 RCX: 0000000099990a23 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000282 RBP: ffff88808129f248 R08: 0000000000000000 R09: 0000000000000004 R10: ffff8880a4e04ba0 R11: 00000000442821ed R12: ffffffff88f97260 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002 rcu_lock_acquire include/linux/rcupdate.h:242 [inline] rcu_read_lock_sched include/linux/rcupdate.h:741 [inline] percpu_ref_put_many+0x37/0x190 include/linux/percpu-refcount.h:279 percpu_ref_put include/linux/percpu-refcount.h:300 [inline] css_put include/linux/cgroup.h:392 [inline] mem_cgroup_iter+0x907/0xac0 mm/memcontrol.c:1009 shrink_node+0x402/0x1450 mm/vmscan.c:2760 shrink_zones mm/vmscan.c:2966 [inline] do_try_to_free_pages+0x3cb/0x11c0 mm/vmscan.c:3024 try_to_free_pages+0x2ee/0x7f0 mm/vmscan.c:3239 __perform_reclaim mm/page_alloc.c:3798 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:3819 [inline] __alloc_pages_slowpath+0x990/0x2870 mm/page_alloc.c:4209 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2197 alloc_pages include/linux/gfp.h:532 [inline] __page_cache_alloc mm/filemap.c:969 [inline] __page_cache_alloc+0x2bd/0x450 mm/filemap.c:954 page_cache_read mm/filemap.c:2408 [inline] filemap_fault+0xfeb/0x1f00 mm/filemap.c:2592 ext4_filemap_fault+0x83/0xaf fs/ext4/inode.c:6341 __do_fault+0x111/0x480 mm/memory.c:3269 do_read_fault mm/memory.c:3681 [inline] do_fault mm/memory.c:3810 [inline] handle_pte_fault mm/memory.c:4041 [inline] __handle_mm_fault+0x2d78/0x3f80 mm/memory.c:4165 handle_mm_fault+0x1b5/0x690 mm/memory.c:4202 __do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1390 do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1465 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1204 RIP: 0033:0x45b153 Code: Bad RIP value. RSP: 002b:000000c420039ea0 EFLAGS: 00010206 RAX: ffffffffffffff92 RBX: 000000003b9826de RCX: 000000000045b153 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001911220 RBP: 000000c420039ee8 R08: 0000000000000000 R09: 0000000000000000 R10: 000000c420039ed8 R11: 0000000000000206 R12: 00000120f6001615 R13: 0000000000000001 R14: 0000000000000013 R15: 0000000000000100 warn_alloc_show_mem: 1 callbacks suppressed CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 4.19.90-syzkaller #0 Mem-Info: active_anon:103702 inactive_anon:189 isolated_anon:0 active_file:12 inactive_file:12 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:10112 slab_unreclaimable:1400376 mapped:52226 shmem:245 pagetables:1047 bounce:0 free:10883 free_pcp:183 free_cma:0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: Node 0 active_anon:414556kB inactive_anon:756kB active_file:48kB inactive_file:44kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:208904kB dirty:0kB writeback:0kB shmem:980kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 118784kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 Node 1 active_anon:252kB inactive_anon:0kB active_file:0kB inactive_file:4kB 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+0x7b/0x173 mm/page_alloc.c:3455 Node 0 DMA free:10260kB 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 2545 2546 2546 2546 Node 0 DMA32 free:13280kB min:36168kB low:45208kB high:54248kB active_anon:414556kB inactive_anon:756kB active_file:48kB inactive_file:44kB unevictable:0kB writepending:0kB present:3129332kB managed:2609796kB mlocked:0kB kernel_stack:7232kB pagetables:4188kB bounce:0kB free_pcp:264kB local_pcp:264kB free_cma:0kB lowmem_reserve[]: 0 0 1 1 1 Node 0 Normal free:0kB min:12kB low:12kB high:12kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:786432kB managed:1140kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB __alloc_pages_slowpath+0x2214/0x2870 mm/page_alloc.c:4315 lowmem_reserve[]: 0 0 0 0 0 Node 1 Normal free:19992kB min:53704kB low:67128kB high:80552kB active_anon:252kB inactive_anon:0kB active_file:0kB inactive_file:4kB unevictable:0kB writepending:0kB present:3932160kB managed:3870168kB mlocked:0kB kernel_stack:32kB pagetables:0kB bounce:0kB free_pcp:468kB local_pcp:220kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 0 Node 0 DMA: 1*4kB (U) 0*8kB 1*16kB (U) 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB (M) 2*4096kB (M) = 10260kB Node 0 DMA32: 270*4kB (MEH) 736*8kB (UMEH) 247*16kB (UMH) 64*32kB (UMH) 6*64kB (H) 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 13352kB Node 0 Normal: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417 Node 1 Normal: 4*4kB (ME) 5*8kB (ME) 2*16kB (M) 6*32kB (UME) 2*64kB (ME) 3*128kB (UE) 1*256kB (U) 3*512kB (ME) 3*1024kB (UM) 1*2048kB (U) 3*4096kB (M) = 19992kB 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:496 [inline] __alloc_pages_node include/linux/gfp.h:509 [inline] kmem_getpages mm/slab.c:1412 [inline] cache_grow_begin+0x91/0x8c0 mm/slab.c:2682 Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB 269 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:3224 Total swap = 0kB 1965979 pages RAM ____cache_alloc_node+0x1be/0x1e0 mm/slab.c:3292 0 pages HighMem/MovableOnly slab_alloc_node mm/slab.c:3332 [inline] kmem_cache_alloc_node+0xe3/0x710 mm/slab.c:3647 341726 pages reserved 0 pages cma reserved ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb __alloc_skb+0xd5/0x5f0 net/core/skbuff.c:193 syz-fuzzer: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) alloc_skb include/linux/skbuff.h:995 [inline] ndisc_alloc_skb+0x13c/0x340 net/ipv6/ndisc.c:403 syz-fuzzer cpuset=/ mems_allowed=0-1 ndisc_send_rs+0x7c/0x6e0 net/ipv6/ndisc.c:669 addrconf_rs_timer+0x30f/0x680 net/ipv6/addrconf.c:3825 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers kernel/time/timer.c:1684 [inline] __run_timers kernel/time/timer.c:1652 [inline] run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697 __do_softirq+0x25c/0x921 kernel/softirq.c:292 run_ksoftirqd kernel/softirq.c:653 [inline] run_ksoftirqd+0x8e/0x110 kernel/softirq.c:645 smpboot_thread_fn+0x6a3/0xa30 kernel/smpboot.c:164 kthread+0x354/0x420 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 CPU: 1 PID: 7765 Comm: syz-fuzzer Not tainted 4.19.90-syzkaller #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+0x197/0x210 lib/dump_stack.c:118 warn_alloc.cold+0x7b/0x173 mm/page_alloc.c:3455 ksoftirqd/0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) ksoftirqd/0 cpuset=/ mems_allowed=0-1 __alloc_pages_slowpath+0x2214/0x2870 mm/page_alloc.c:4315 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417 __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+0x91/0x8c0 mm/slab.c:2682 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3224 ____cache_alloc_node+0x1be/0x1e0 mm/slab.c:3292 slab_alloc_node mm/slab.c:3332 [inline] kmem_cache_alloc_node+0xe3/0x710 mm/slab.c:3647 __alloc_skb+0xd5/0x5f0 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:995 [inline] ndisc_alloc_skb+0x13c/0x340 net/ipv6/ndisc.c:403 ndisc_send_rs+0x35f/0x6e0 net/ipv6/ndisc.c:669 addrconf_rs_timer+0x30f/0x680 net/ipv6/addrconf.c:3825 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers kernel/time/timer.c:1684 [inline] __run_timers kernel/time/timer.c:1652 [inline] run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697 __do_softirq+0x25c/0x921 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:lock_acquire+0x1ea/0x3f0 kernel/locking/lockdep.c:3906 Code: 7c 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 c4 01 00 00 48 83 3d 7a dd 9f 07 00 0f 84 38 01 00 00 48 8b 7d c8 57 9d <0f> 1f 44 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 65 8b RSP: 0000:ffff88808129f200 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff11e4b79 RBX: ffff8880a4e04280 RCX: 0000000099990a23 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000282 RBP: ffff88808129f248 R08: 0000000000000000 R09: 0000000000000004 R10: ffff8880a4e04ba0 R11: 00000000442821ed R12: ffffffff88f97260 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002 rcu_lock_acquire include/linux/rcupdate.h:242 [inline] rcu_read_lock_sched include/linux/rcupdate.h:741 [inline] percpu_ref_put_many+0x37/0x190 include/linux/percpu-refcount.h:279 percpu_ref_put include/linux/percpu-refcount.h:300 [inline] css_put include/linux/cgroup.h:392 [inline] mem_cgroup_iter+0x907/0xac0 mm/memcontrol.c:1009 shrink_node+0x402/0x1450 mm/vmscan.c:2760 shrink_zones mm/vmscan.c:2966 [inline] do_try_to_free_pages+0x3cb/0x11c0 mm/vmscan.c:3024 try_to_free_pages+0x2ee/0x7f0 mm/vmscan.c:3239 __perform_reclaim mm/page_alloc.c:3798 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:3819 [inline] __alloc_pages_slowpath+0x990/0x2870 mm/page_alloc.c:4209 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2197 alloc_pages include/linux/gfp.h:532 [inline] __page_cache_alloc mm/filemap.c:969 [inline] __page_cache_alloc+0x2bd/0x450 mm/filemap.c:954 page_cache_read mm/filemap.c:2408 [inline] filemap_fault+0xfeb/0x1f00 mm/filemap.c:2592 ext4_filemap_fault+0x83/0xaf fs/ext4/inode.c:6341 __do_fault+0x111/0x480 mm/memory.c:3269 do_read_fault mm/memory.c:3681 [inline] do_fault mm/memory.c:3810 [inline] handle_pte_fault mm/memory.c:4041 [inline] __handle_mm_fault+0x2d78/0x3f80 mm/memory.c:4165 handle_mm_fault+0x1b5/0x690 mm/memory.c:4202 __do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1390 do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1465 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1204 RIP: 0033:0x45b153 Code: Bad RIP value. RSP: 002b:000000c420039ea0 EFLAGS: 00010206 RAX: ffffffffffffff92 RBX: 000000003b9826de RCX: 000000000045b153 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001911220 RBP: 000000c420039ee8 R08: 0000000000000000 R09: 0000000000000000 R10: 000000c420039ed8 R11: 0000000000000206 R12: 00000120f6001615 R13: 0000000000000001 R14: 0000000000000013 R15: 0000000000000100 warn_alloc_show_mem: 1 callbacks suppressed CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 4.19.90-syzkaller #0 Mem-Info: active_anon:103702 inactive_anon:189 isolated_anon:0 active_file:12 inactive_file:12 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:10112 slab_unreclaimable:1400376 mapped:52226 shmem:245 pagetables:1047 bounce:0 free:10883 free_pcp:183 free_cma:0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Node 0 active_anon:414556kB inactive_anon:756kB active_file:48kB inactive_file:44kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:208904kB dirty:0kB writeback:0kB shmem:980kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 118784kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes Call Trace: Node 1 active_anon:252kB inactive_anon:0kB active_file:0kB inactive_file:4kB 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+0x197/0x210 lib/dump_stack.c:118 Node 0 DMA free:10260kB 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+0x7b/0x173 mm/page_alloc.c:3455 lowmem_reserve[]: 0 2545 2546 2546 2546 Node 0 DMA32 free:13280kB min:36168kB low:45208kB high:54248kB active_anon:414556kB inactive_anon:756kB active_file:48kB inactive_file:44kB unevictable:0kB writepending:0kB present:3129332kB managed:2609796kB mlocked:0kB kernel_stack:7232kB pagetables:4188kB bounce:0kB free_pcp:264kB local_pcp:264kB free_cma:0kB lowmem_reserve[]: 0 0 1 1 1 Node 0 Normal free:0kB min:12kB low:12kB high:12kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:786432kB managed:1140kB 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 __alloc_pages_slowpath+0x2214/0x2870 mm/page_alloc.c:4315 Node 1 Normal free:19992kB min:53704kB low:67128kB high:80552kB active_anon:252kB inactive_anon:0kB active_file:0kB inactive_file:4kB unevictable:0kB writepending:0kB present:3932160kB managed:3870168kB mlocked:0kB kernel_stack:32kB pagetables:0kB bounce:0kB free_pcp:468kB local_pcp:220kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 0 Node 0 DMA: 1*4kB (U) 0*8kB 1*16kB (U) 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB (M) 2*4096kB (M) = 10260kB Node 0 DMA32: 270*4kB (MEH) 736*8kB (UMEH) 247*16kB (UMH) 64*32kB (UMH) 6*64kB (H) 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 13352kB Node 0 Normal: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB Node 1 Normal: 4*4kB (ME) 5*8kB (ME) 2*16kB (M) 6*32kB (UME) 2*64kB (ME) 3*128kB (UE) 1*256kB (U) 3*512kB (ME) 3*1024kB (UM) 1*2048kB (U) 3*4096kB (M) = 19992kB __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417 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:496 [inline] __alloc_pages_node include/linux/gfp.h:509 [inline] kmem_getpages mm/slab.c:1412 [inline] cache_grow_begin+0x91/0x8c0 mm/slab.c:2682 Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB 269 total pagecache pages 0 pages in swap cache fallback_alloc+0x1fd/0x2d0 mm/slab.c:3224 Swap cache stats: add 0, delete 0, find 0/0 ____cache_alloc_node+0x1be/0x1e0 mm/slab.c:3292 Free swap = 0kB Total swap = 0kB slab_alloc_node mm/slab.c:3332 [inline] kmem_cache_alloc_node+0xe3/0x710 mm/slab.c:3647 1965979 pages RAM 0 pages HighMem/MovableOnly 341726 pages reserved __alloc_skb+0xd5/0x5f0 net/core/skbuff.c:193 0 pages cma reserved ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb alloc_skb include/linux/skbuff.h:995 [inline] ndisc_alloc_skb+0x13c/0x340 net/ipv6/ndisc.c:403 syz-fuzzer: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) ndisc_send_rs+0x35f/0x6e0 net/ipv6/ndisc.c:669 syz-fuzzer cpuset=/ mems_allowed=0-1 addrconf_rs_timer+0x30f/0x680 net/ipv6/addrconf.c:3825 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers kernel/time/timer.c:1684 [inline] __run_timers kernel/time/timer.c:1652 [inline] run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697 __do_softirq+0x25c/0x921 kernel/softirq.c:292 run_ksoftirqd kernel/softirq.c:653 [inline] run_ksoftirqd+0x8e/0x110 kernel/softirq.c:645 smpboot_thread_fn+0x6a3/0xa30 kernel/smpboot.c:164 kthread+0x354/0x420 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 CPU: 1 PID: 7765 Comm: syz-fuzzer Not tainted 4.19.90-syzkaller #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/0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) ksoftirqd/0 cpuset=/ mems_allowed=0-1 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 warn_alloc.cold+0x7b/0x173 mm/page_alloc.c:3455 __alloc_pages_slowpath+0x2214/0x2870 mm/page_alloc.c:4315 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417 __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+0x91/0x8c0 mm/slab.c:2682 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3224 ____cache_alloc_node+0x1be/0x1e0 mm/slab.c:3292 slab_alloc_node mm/slab.c:3332 [inline] kmem_cache_alloc_node+0xe3/0x710 mm/slab.c:3647 __alloc_skb+0xd5/0x5f0 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:995 [inline] nlmsg_new include/net/netlink.h:511 [inline] __br_mdb_notify+0x2af/0xe40 net/bridge/br_mdb.c:377 br_mdb_notify+0x20d/0x2d0 net/bridge/br_mdb.c:410 br_multicast_group_expired+0x141/0x410 net/bridge/br_multicast.c:253 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers kernel/time/timer.c:1684 [inline] __run_timers kernel/time/timer.c:1652 [inline] run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697 __do_softirq+0x25c/0x921 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:lock_acquire+0x1ea/0x3f0 kernel/locking/lockdep.c:3906 Code: 7c 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 c4 01 00 00 48 83 3d 7a dd 9f 07 00 0f 84 38 01 00 00 48 8b 7d c8 57 9d <0f> 1f 44 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 65 8b RSP: 0000:ffff88808129f200 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff11e4b79 RBX: ffff8880a4e04280 RCX: 0000000099990a23 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000282 RBP: ffff88808129f248 R08: 0000000000000000 R09: 0000000000000004 R10: ffff8880a4e04ba0 R11: 00000000442821ed R12: ffffffff88f97260 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002 rcu_lock_acquire include/linux/rcupdate.h:242 [inline] rcu_read_lock_sched include/linux/rcupdate.h:741 [inline] percpu_ref_put_many+0x37/0x190 include/linux/percpu-refcount.h:279 percpu_ref_put include/linux/percpu-refcount.h:300 [inline] css_put include/linux/cgroup.h:392 [inline] mem_cgroup_iter+0x907/0xac0 mm/memcontrol.c:1009 shrink_node+0x402/0x1450 mm/vmscan.c:2760 shrink_zones mm/vmscan.c:2966 [inline] do_try_to_free_pages+0x3cb/0x11c0 mm/vmscan.c:3024 try_to_free_pages+0x2ee/0x7f0 mm/vmscan.c:3239 __perform_reclaim mm/page_alloc.c:3798 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:3819 [inline] __alloc_pages_slowpath+0x990/0x2870 mm/page_alloc.c:4209 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2197 alloc_pages include/linux/gfp.h:532 [inline] __page_cache_alloc mm/filemap.c:969 [inline] __page_cache_alloc+0x2bd/0x450 mm/filemap.c:954 page_cache_read mm/filemap.c:2408 [inline] filemap_fault+0xfeb/0x1f00 mm/filemap.c:2592 ext4_filemap_fault+0x83/0xaf fs/ext4/inode.c:6341 __do_fault+0x111/0x480 mm/memory.c:3269 do_read_fault mm/memory.c:3681 [inline] do_fault mm/memory.c:3810 [inline] handle_pte_fault mm/memory.c:4041 [inline] __handle_mm_fault+0x2d78/0x3f80 mm/memory.c:4165 handle_mm_fault+0x1b5/0x690 mm/memory.c:4202 __do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1390 do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1465 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1204 RIP: 0033:0x45b153 Code: Bad RIP value. RSP: 002b:000000c420039ea0 EFLAGS: 00010206 RAX: ffffffffffffff92 RBX: 000000003b9826de RCX: 000000000045b153 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001911220 RBP: 000000c420039ee8 R08: 0000000000000000 R09: 0000000000000000 R10: 000000c420039ed8 R11: 0000000000000206 R12: 00000120f6001615 R13: 0000000000000001 R14: 0000000000000013 R15: 0000000000000100 warn_alloc_show_mem: 1 callbacks suppressed CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 4.19.90-syzkaller #0 Mem-Info: active_anon:103702 inactive_anon:189 isolated_anon:0 active_file:12 inactive_file:12 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:10112 slab_unreclaimable:1400376