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INFO: rcu detected stall in ext4_filemap_fault

Status: closed as dup on 2019/01/02 16:36
Subsystems: mm
[Documentation on labels]
Reported-by: syzbot+54b42be3e78ab73fca73@syzkaller.appspotmail.com
First crash: 2262d, last: 2089d
▶ ▼ Duplicate of
Title Repro Cause bisect Fix bisect Count Last Reported
INFO: rcu detected stall in ndisc_alloc_skb net 1 2232d 2152d
▶ ▼ Similar bugs (8)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 INFO: rcu detected stall in ext4_filemap_fault (3) 2 924d 954d 0/1 auto-obsoleted due to no activity on 2022/09/09 17:56
linux-4.19 INFO: rcu detected stall in ext4_filemap_fault (2) 1 1579d 1579d 0/1 auto-closed as invalid on 2020/11/23 02:32
android-49 INFO: rcu detected stall in ext4_filemap_fault C 1 1898d 1898d 0/3 public: reported C repro on 2019/09/11 03:52
android-414 INFO: rcu detected stall in ext4_filemap_fault 1 2158d 2052d 0/1 auto-closed as invalid on 2019/06/22 22:11
linux-4.19 INFO: rcu detected stall in ext4_filemap_fault 4 1768d 1918d 0/1 auto-closed as invalid on 2020/05/18 19:50
linux-4.14 INFO: rcu detected stall in ext4_filemap_fault 1 1821d 1821d 0/1 auto-closed as invalid on 2020/03/25 22:24
upstream INFO: rcu detected stall in ext4_filemap_fault (2) cgroups 1 1864d 1864d 0/28 auto-closed as invalid on 2020/01/13 18:23
android-414 INFO: rcu detected stall in ext4_filemap_fault (2) 2 1817d 1862d 0/1 auto-closed as invalid on 2020/03/30 02:23

Sample crash report:
CPU: 0 PID: 6052 Comm: syz-fuzzer Not tainted 4.20.0-rc2+ #118
rcu: INFO: rcu_preempt self-detected stall on CPU
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
rcu: 	1-...!: (1 GPs behind) idle=f8e/1/0x4000000000000004 softirq=23537/23538 fqs=0 
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
 warn_alloc.cold.116+0xb7/0x1bd mm/page_alloc.c:3423
 __alloc_pages_slowpath+0x2651/0x2de0 mm/page_alloc.c:4291
rcu: 	 (t=10607 jiffies g=19093 q=62)
rcu: rcu_preempt kthread starved for 10607 jiffies! g19093 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: RCU grace-period kthread stack dump:
rcu_preempt     R  running task    23000    10      2 0x80000000
Call Trace:
 context_switch kernel/sched/core.c:2831 [inline]
 __schedule+0x8cf/0x21d0 kernel/sched/core.c:3472
 schedule+0xfe/0x460 kernel/sched/core.c:3516
 schedule_timeout+0x140/0x260 kernel/time/timer.c:1804
 rcu_gp_fqs_loop+0x762/0xa80 kernel/rcu/tree.c:1934
 __alloc_pages_nodemask+0xad8/0xea0 mm/page_alloc.c:4393
 __alloc_pages include/linux/gfp.h:473 [inline]
 __alloc_pages_node include/linux/gfp.h:486 [inline]
 kmem_getpages mm/slab.c:1409 [inline]
 cache_grow_begin+0xa5/0x8c0 mm/slab.c:2677
 fallback_alloc+0x204/0x2e0 mm/slab.c:3219
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
 slab_alloc_node mm/slab.c:3327 [inline]
 kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:997 [inline]
 nlmsg_new include/net/netlink.h:654 [inline]
 __br_mdb_notify+0x4ff/0x15d0 net/bridge/br_mdb.c:407
 rcu_gp_kthread+0x341/0xc70 kernel/rcu/tree.c:2090
 br_mdb_notify+0x310/0x410 net/bridge/br_mdb.c:440
 br_multicast_group_expired+0x1bc/0x610 net/bridge/br_multicast.c:253
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
 kthread+0x35a/0x440 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
NMI backtrace for cpu 1
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
 __do_softirq+0x308/0xb7e kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x17f/0x1c0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:804
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline]
RIP: 0010:console_unlock+0x102f/0x1190 kernel/printk/printk.c:2418
Code: 70 fb 51 89 48 89 f8 48 c1 e8 03 42 80 3c 20 00 75 36 48 83 3d d1 77 ec 07 00 74 25 e8 4a 07 1a 00 48 8b bd b0 fe ff ff 57 9d <0f> 1f 44 00 00 e9 9a f8 ff ff 4c 89 ef e8 4f 56 5d 00 e9 f2 fb ff
RSP: 0000:ffff8881b2d25e40 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff8881c30ae280 RBX: 0000000000000200 RCX: 1ffff11038615d73
RDX: 0000000000000000 RSI: ffffffff816583a6 RDI: 0000000000000293
RBP: ffff8881b2d25fb0 R08: ffff8881c30aeb98 R09: 0000000000000006
R10: 0000000000000000 R11: ffff8881c30ae280 R12: dffffc0000000000
R13: ffffffff849ca5e0 R14: dffffc0000000000 R15: ffffffff89b63570
 vprintk_emit+0x391/0x990 kernel/printk/printk.c:1922
 vprintk_default+0x28/0x30 kernel/printk/printk.c:1964
 vprintk_func+0x7e/0x181 kernel/printk/printk_safe.c:398
 printk+0xa7/0xcf kernel/printk/printk.c:1997
 dump_unreclaimable_slab.cold.22+0xd8/0xe6 mm/slab_common.c:1392
 dump_header+0x7cc/0xf72 mm/oom_kill.c:447
 oom_kill_process.cold.27+0x10/0x903 mm/oom_kill.c:953
 out_of_memory+0xa84/0x1430 mm/oom_kill.c:1120
 __alloc_pages_may_oom mm/page_alloc.c:3519 [inline]
 __alloc_pages_slowpath+0x232c/0x2de0 mm/page_alloc.c:4229
 __alloc_pages_nodemask+0xad8/0xea0 mm/page_alloc.c:4393
 alloc_pages_current+0x173/0x350 mm/mempolicy.c:2080
 alloc_pages include/linux/gfp.h:509 [inline]
 __page_cache_alloc+0x38c/0x5c0 mm/filemap.c:924
 page_cache_read mm/filemap.c:2312 [inline]
 filemap_fault+0x1595/0x25f0 mm/filemap.c:2496
 ext4_filemap_fault+0x82/0xad fs/ext4/inode.c:6292
 __do_fault+0x100/0x6b0 mm/memory.c:2996
 do_read_fault mm/memory.c:3408 [inline]
 do_fault mm/memory.c:3534 [inline]
 handle_pte_fault mm/memory.c:3765 [inline]
 __handle_mm_fault+0x3ea0/0x5be0 mm/memory.c:3889
 handle_mm_fault+0x54f/0xc70 mm/memory.c:3926
 do_user_addr_fault arch/x86/mm/fault.c:1423 [inline]
 __do_page_fault+0x5e8/0xe60 arch/x86/mm/fault.c:1489
 do_page_fault+0xf2/0x7e0 arch/x86/mm/fault.c:1520
 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1139
RIP: 0033:0x45ddf3
Code: Bad RIP value.
RSP: 002b:000000c42001eea0 EFLAGS: 00010202
RAX: ffffffffffffff92 RBX: 000000003b980b34 RCX: 000000000045ddf3
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000014ecf00
RBP: 000000c42001eee8 R08: 0000000000000000 R09: 0000000000000000
R10: 000000c42001eed8 R11: 0000000000000202 R12: 0000000000000001
R13: 000000c43cde6540 R14: 0000000000000001 R15: 0000000000000000
CPU: 1 PID: 10189 Comm: syz-executor4 Not tainted 4.20.0-rc2+ #118
warn_alloc_show_mem: 1 callbacks suppressed
Mem-Info:
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
active_anon:147110 inactive_anon:190 isolated_anon:0
 active_file:13 inactive_file:13 isolated_file:2
 unevictable:1 dirty:0 writeback:0 unstable:0
 slab_reclaimable:9259 slab_unreclaimable:1360772
 mapped:49154 shmem:245 pagetables:1010 bounce:0
 free:13705 free_pcp:247 free_cma:0
Call Trace:
Node 0 active_anon:588440kB inactive_anon:760kB active_file:52kB inactive_file:52kB unevictable:4kB isolated(anon):0kB isolated(file):8kB mapped:196616kB dirty:0kB writeback:0kB shmem:980kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 548864kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
 <IRQ>
Node 0 DMA free:15908kB min:164kB low:204kB high:244kB 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+0x244/0x39d lib/dump_stack.c:113
lowmem_reserve[]: 0 2818 6321 6321
Node 0 DMA32 free:25140kB min:30052kB low:37564kB high:45076kB active_anon:22584kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2888776kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 3503 3503
Node 0 Normal free:13772kB min:37364kB low:46704kB high:56044kB active_anon:565856kB inactive_anon:760kB active_file:52kB inactive_file:52kB unevictable:4kB writepending:0kB present:4718592kB managed:3587816kB mlocked:0kB kernel_stack:7072kB pagetables:4040kB bounce:0kB free_pcp:740kB local_pcp:492kB free_cma:0kB
 nmi_cpu_backtrace.cold.2+0x5c/0xa1 lib/nmi_backtrace.c:101
lowmem_reserve[]: 0 0 0 0
Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15908kB
 nmi_trigger_cpumask_backtrace+0x1e8/0x22a lib/nmi_backtrace.c:62
Node 0 DMA32: 7*4kB (UM) 3*8kB (M) 2*16kB (M) 5*32kB (UM) 3*64kB (M) 3*128kB (M) 3*256kB (M) 4*512kB (UM) 3*1024kB (UM) 1*2048kB (M) 4*4096kB (M) = 25140kB
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
Node 0 Normal: 963*4kB (ME) 560*8kB (UME) 222*16kB (UME) 45*32kB (UM) 1*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 0*1024kB 0*2048kB 0*4096kB = 13772kB
 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
 rcu_dump_cpu_stacks+0x16f/0x1bc kernel/rcu/tree.c:1195
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
 print_cpu_stall.cold.67+0x1f3/0x3c7 kernel/rcu/tree.c:1334
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
274 total pagecache pages
0 pages in swap cache
Swap cache stats: add 0, delete 0, find 0/0
Free swap  = 0kB
Total swap = 0kB
1965979 pages RAM
0 pages HighMem/MovableOnly
342854 pages reserved
0 pages cma reserved
syz-fuzzer: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
syz-fuzzer cpuset=/ mems_allowed=0
 check_cpu_stall kernel/rcu/tree.c:1408 [inline]
 rcu_pending kernel/rcu/tree.c:2961 [inline]
 rcu_check_callbacks+0xf3b/0x13f0 kernel/rcu/tree.c:2506
 update_process_times+0x2d/0x70 kernel/time/timer.c:1636
 tick_sched_handle+0x9f/0x180 kernel/time/tick-sched.c:164
 tick_sched_timer+0x45/0x130 kernel/time/tick-sched.c:1274
 __run_hrtimer kernel/time/hrtimer.c:1398 [inline]
 __hrtimer_run_queues+0x41c/0x10d0 kernel/time/hrtimer.c:1460
 hrtimer_interrupt+0x313/0x780 kernel/time/hrtimer.c:1518
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1034 [inline]
 smp_apic_timer_interrupt+0x1a1/0x760 arch/x86/kernel/apic/apic.c:1059
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:804
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline]
RIP: 0010:slab_alloc_node mm/slab.c:3329 [inline]
RIP: 0010:kmem_cache_alloc_node+0x247/0x730 mm/slab.c:3642
Code: 3f 7e 0f 85 32 ff ff ff e8 65 1b 3e ff e9 28 ff ff ff e8 0c 51 c3 ff 48 83 3d a4 99 8f 07 00 0f 84 33 01 00 00 4c 89 ff 57 9d <0f> 1f 44 00 00 e9 bf fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 1a b1
RSP: 0000:ffff8881daf071d8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000480020 RCX: 1ffff11033d711f6
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000286
RBP: ffff8881daf07248 R08: ffff88819eb88fb0 R09: 0000000000000002
R10: 0000000000000000 R11: ffff88819eb886c0 R12: ffff8881d9bdcc00
R13: ffff8881d9bdcc00 R14: 0000000000000000 R15: 0000000000000286
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:997 [inline]
 nlmsg_new include/net/netlink.h:654 [inline]
 __br_mdb_notify+0x4ff/0x15d0 net/bridge/br_mdb.c:407
 br_mdb_notify+0x310/0x410 net/bridge/br_mdb.c:440
 br_multicast_del_pg+0x3df/0x790 net/bridge/br_multicast.c:292
 br_multicast_port_group_expired+0x189/0x1e0 net/bridge/br_multicast.c:316
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
 __do_softirq+0x308/0xb7e kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x17f/0x1c0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:804
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline]
RIP: 0010:slab_alloc mm/slab.c:3385 [inline]
RIP: 0010:kmem_cache_alloc+0x297/0x730 mm/slab.c:3552
Code: 7e 0f 85 cf fe ff ff e8 b6 fb 3d ff e9 c5 fe ff ff e8 5d 31 c3 ff 48 83 3d f5 79 8f 07 00 0f 84 41 03 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 e9 54 fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 1a b1
RSP: 0000:ffff888145617738 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff88819eb88f40 RDI: 0000000000000286
RBP: ffff8881456177a0 R08: ffff88819eb886c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8881d9bdcc00 R14: ffff8881d9bdcc00 R15: 0000000000480020
 skb_clone+0x1bb/0x500 net/core/skbuff.c:1280
 ____bpf_clone_redirect net/core/filter.c:2080 [inline]
 bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2067
 bpf_prog_e113bbc17aa3fb19+0xfb/0x1000
CPU: 0 PID: 6052 Comm: syz-fuzzer Not tainted 4.20.0-rc2+ #118
syz-executor4: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
syz-executor4 cpuset=syz4 mems_allowed=0
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
 warn_alloc.cold.116+0xb7/0x1bd mm/page_alloc.c:3423
 __alloc_pages_slowpath+0x2651/0x2de0 mm/page_alloc.c:4291
 __alloc_pages_nodemask+0xad8/0xea0 mm/page_alloc.c:4393
 __alloc_pages include/linux/gfp.h:473 [inline]
 __alloc_pages_node include/linux/gfp.h:486 [inline]
 kmem_getpages mm/slab.c:1409 [inline]
 cache_grow_begin+0xa5/0x8c0 mm/slab.c:2677
 fallback_alloc+0x204/0x2e0 mm/slab.c:3219
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
 slab_alloc_node mm/slab.c:3327 [inline]
 kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:997 [inline]
 nlmsg_new include/net/netlink.h:654 [inline]
 __br_mdb_notify+0x4ff/0x15d0 net/bridge/br_mdb.c:407
 br_mdb_notify+0x310/0x410 net/bridge/br_mdb.c:440
 br_multicast_group_expired+0x1bc/0x610 net/bridge/br_multicast.c:253
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
 __do_softirq+0x308/0xb7e kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x17f/0x1c0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:804
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline]
RIP: 0010:console_unlock+0x102f/0x1190 kernel/printk/printk.c:2418
Code: 70 fb 51 89 48 89 f8 48 c1 e8 03 42 80 3c 20 00 75 36 48 83 3d d1 77 ec 07 00 74 25 e8 4a 07 1a 00 48 8b bd b0 fe ff ff 57 9d <0f> 1f 44 00 00 e9 9a f8 ff ff 4c 89 ef e8 4f 56 5d 00 e9 f2 fb ff
RSP: 0000:ffff8881b2d25e40 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff8881c30ae280 RBX: 0000000000000200 RCX: 1ffff11038615d73
RDX: 0000000000000000 RSI: ffffffff816583a6 RDI: 0000000000000293
RBP: ffff8881b2d25fb0 R08: ffff8881c30aeb98 R09: 0000000000000006
R10: 0000000000000000 R11: ffff8881c30ae280 R12: dffffc0000000000
R13: ffffffff849ca5e0 R14: dffffc0000000000 R15: ffffffff89b63570
 vprintk_emit+0x391/0x990 kernel/printk/printk.c:1922
 vprintk_default+0x28/0x30 kernel/printk/printk.c:1964
 vprintk_func+0x7e/0x181 kernel/printk/printk_safe.c:398
 printk+0xa7/0xcf kernel/printk/printk.c:1997
 dump_unreclaimable_slab.cold.22+0xd8/0xe6 mm/slab_common.c:1392
 dump_header+0x7cc/0xf72 mm/oom_kill.c:447
 oom_kill_process.cold.27+0x10/0x903 mm/oom_kill.c:953
 out_of_memory+0xa84/0x1430 mm/oom_kill.c:1120
 __alloc_pages_may_oom mm/page_alloc.c:3519 [inline]
 __alloc_pages_slowpath+0x232c/0x2de0 mm/page_alloc.c:4229
 __alloc_pages_nodemask+0xad8/0xea0 mm/page_alloc.c:4393
 alloc_pages_current+0x173/0x350 mm/mempolicy.c:2080
 alloc_pages include/linux/gfp.h:509 [inline]
 __page_cache_alloc+0x38c/0x5c0 mm/filemap.c:924
 page_cache_read mm/filemap.c:2312 [inline]
 filemap_fault+0x1595/0x25f0 mm/filemap.c:2496
 ext4_filemap_fault+0x82/0xad fs/ext4/inode.c:6292
 __do_fault+0x100/0x6b0 mm/memory.c:2996
 do_read_fault mm/memory.c:3408 [inline]
 do_fault mm/memory.c:3534 [inline]
 handle_pte_fault mm/memory.c:3765 [inline]
 __handle_mm_fault+0x3ea0/0x5be0 mm/memory.c:3889
 handle_mm_fault+0x54f/0xc70 mm/memory.c:3926
 do_user_addr_fault arch/x86/mm/fault.c:1423 [inline]
 __do_page_fault+0x5e8/0xe60 arch/x86/mm/fault.c:1489
 do_page_fault+0xf2/0x7e0 arch/x86/mm/fault.c:1520
 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1139
RIP: 0033:0x45ddf3
Code: Bad RIP value.
RSP: 002b:000000c42001eea0 EFLAGS: 00010202
RAX: ffffffffffffff92 RBX: 000000003b980b34 RCX: 000000000045ddf3
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000014ecf00
RBP: 000000c42001eee8 R08: 0000000000000000 R09: 0000000000000000
R10: 000000c42001eed8 R11: 0000000000000202 R12: 0000000000000001
R13: 000000c43cde6540 R14: 0000000000000001 R15: 0000000000000000
CPU: 1 PID: 10189 Comm: syz-executor4 Not tainted 4.20.0-rc2+ #118
Mem-Info:
active_anon:147110 inactive_anon:190 isolated_anon:0
 active_file:13 inactive_file:13 isolated_file:2
 unevictable:1 dirty:0 writeback:0 unstable:0
 slab_reclaimable:9259 slab_unreclaimable:1360772
 mapped:49154 shmem:245 pagetables:1010 bounce:0
 free:13705 free_pcp:247 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Node 0 active_anon:588440kB inactive_anon:760kB active_file:52kB inactive_file:52kB unevictable:4kB isolated(anon):0kB isolated(file):8kB mapped:196616kB dirty:0kB writeback:0kB shmem:980kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 548864kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
Call Trace:
Node 0 DMA free:15908kB min:164kB low:204kB high:244kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
 <IRQ>
lowmem_reserve[]: 0 2818 6321 6321
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
Node 0 DMA32 free:25140kB min:30052kB low:37564kB high:45076kB active_anon:22584kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2888776kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 3503 3503
 warn_alloc.cold.116+0xb7/0x1bd mm/page_alloc.c:3423
Node 0 Normal free:13772kB min:37364kB low:46704kB high:56044kB active_anon:565856kB inactive_anon:760kB active_file:52kB inactive_file:52kB unevictable:4kB writepending:0kB present:4718592kB managed:3587816kB mlocked:0kB kernel_stack:7072kB pagetables:4040kB bounce:0kB free_pcp:740kB local_pcp:492kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0
Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15908kB
Node 0 DMA32: 7*4kB (UM) 3*8kB (M) 2*16kB (M) 5*32kB (UM) 3*64kB (M) 3*128kB (M) 3*256kB (M) 4*512kB (UM) 3*1024kB (UM) 1*2048kB (M) 4*4096kB (M) = 25140kB
Node 0 Normal: 963*4kB (ME) 560*8kB (UME) 222*16kB (UME) 45*32kB (UM) 1*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 0*1024kB 0*2048kB 0*4096kB = 13772kB
 __alloc_pages_slowpath+0x2651/0x2de0 mm/page_alloc.c:4291
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
274 total pagecache pages
0 pages in swap cache
Swap cache stats: add 0, delete 0, find 0/0
Free swap  = 0kB
Total swap = 0kB
1965979 pages RAM
0 pages HighMem/MovableOnly
342854 pages reserved
0 pages cma reserved
syz-fuzzer: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
syz-fuzzer cpuset=/ mems_allowed=0
 __alloc_pages_nodemask+0xad8/0xea0 mm/page_alloc.c:4393
 __alloc_pages include/linux/gfp.h:473 [inline]
 __alloc_pages_node include/linux/gfp.h:486 [inline]
 kmem_getpages mm/slab.c:1409 [inline]
 cache_grow_begin+0xa5/0x8c0 mm/slab.c:2677
 fallback_alloc+0x204/0x2e0 mm/slab.c:3219
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
 slab_alloc_node mm/slab.c:3327 [inline]
 kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:997 [inline]
 nlmsg_new include/net/netlink.h:654 [inline]
 __br_mdb_notify+0x4ff/0x15d0 net/bridge/br_mdb.c:407
 br_mdb_notify+0x310/0x410 net/bridge/br_mdb.c:440
 br_multicast_del_pg+0x3df/0x790 net/bridge/br_multicast.c:292
 br_multicast_port_group_expired+0x189/0x1e0 net/bridge/br_multicast.c:316
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
 __do_softirq+0x308/0xb7e kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x17f/0x1c0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:804
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline]
RIP: 0010:slab_alloc mm/slab.c:3385 [inline]
RIP: 0010:kmem_cache_alloc+0x297/0x730 mm/slab.c:3552
Code: 7e 0f 85 cf fe ff ff e8 b6 fb 3d ff e9 c5 fe ff ff e8 5d 31 c3 ff 48 83 3d f5 79 8f 07 00 0f 84 41 03 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 e9 54 fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 1a b1
RSP: 0000:ffff888145617738 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff88819eb88f40 RDI: 0000000000000286
RBP: ffff8881456177a0 R08: ffff88819eb886c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8881d9bdcc00 R14: ffff8881d9bdcc00 R15: 0000000000480020
 skb_clone+0x1bb/0x500 net/core/skbuff.c:1280
 ____bpf_clone_redirect net/core/filter.c:2080 [inline]
 bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2067
 bpf_prog_e113bbc17aa3fb19+0xfb/0x1000
CPU: 0 PID: 6052 Comm: syz-fuzzer Not tainted 4.20.0-rc2+ #118
syz-executor4: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
syz-executor4 cpuset=syz4 mems_allowed=0
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
 warn_alloc.cold.116+0xb7/0x1bd mm/page_alloc.c:3423
 __alloc_pages_slowpath+0x2651/0x2de0 mm/page_alloc.c:4291
 __alloc_pages_nodemask+0xad8/0xea0 mm/page_alloc.c:4393
 __alloc_pages include/linux/gfp.h:473 [inline]
 __alloc_pages_node include/linux/gfp.h:486 [inline]
 kmem_getpages mm/slab.c:1409 [inline]
 cache_grow_begin+0xa5/0x8c0 mm/slab.c:2677
 fallback_alloc+0x204/0x2e0 mm/slab.c:3219
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
 slab_alloc_node mm/slab.c:3327 [inline]
 kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:997 [inline]
 ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403
 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669
 addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
 __do_softirq+0x308/0xb7e kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x17f/0x1c0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:804
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline]
RIP: 0010:console_unlock+0x102f/0x1190 kernel/printk/printk.c:2418
Code: 70 fb 51 89 48 89 f8 48 c1 e8 03 42 80 3c 20 00 75 36 48 83 3d d1 77 ec 07 00 74 25 e8 4a 07 1a 00 48 8b bd b0 fe ff ff 57 9d <0f> 1f 44 00 00 e9 9a f8 ff ff 4c 89 ef e8 4f 56 5d 00 e9 f2 fb ff
RSP: 0000:ffff8881b2d25e40 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff8881c30ae280 RBX: 0000000000000200 RCX: 1ffff11038615d73
RDX: 0000000000000000 RSI: ffffffff816583a6 RDI: 0000000000000293
RBP: ffff8881b2d25fb0 R08: ffff8881c30aeb98 R09: 0000000000000006
R10: 0000000000000000 R11: ffff8881c30ae280 R12: dffffc0000000000
R13: ffffffff849ca5e0 R14: dffffc0000000000 R15: ffffffff89b63570
 vprintk_emit+0x391/0x990 kernel/printk/printk.c:1922
 vprintk_default+0x28/0x30 kernel/printk/printk.c:1964
 vprintk_func+0x7e/0x181 kernel/printk/printk_safe.c:398
 printk+0xa7/0xcf kernel/printk/printk.c:1997
 dump_unreclaimable_slab.cold.22+0xd8/0xe6 mm/slab_common.c:1392
 dump_header+0x7cc/0xf72 mm/oom_kill.c:447
 oom_kill_process.cold.27+0x10/0x903 mm/oom_kill.c:953
 out_of_memory+0xa84/0x1430 mm/oom_kill.c:1120
 __alloc_pages_may_oom mm/page_alloc.c:3519 [inline]
 __alloc_pages_slowpath+0x232c/0x2de0 mm/page_alloc.c:4229
 __alloc_pages_nodemask+0xad8/0xea0 mm/page_alloc.c:4393
 alloc_pages_current+0x173/0x350 mm/mempolicy.c:2080
 alloc_pages include/linux/gfp.h:509 [inline]
 __page_cache_alloc+0x38c/0x5c0 mm/filemap.c:924
 page_cache_read mm/filemap.c:2312 [inline]
 filemap_fault+0x1595/0x25f0 mm/filemap.c:2496
 ext4_filemap_fault+0x82/0xad fs/ext4/inode.c:6292
 __do_fault+0x100/0x6b0 mm/memory.c:2996
 do_read_fault mm/memory.c:3408 [inline]
 do_fault mm/memory.c:3534 [inline]
 handle_pte_fault mm/memory.c:3765 [inline]
 __handle_mm_fault+0x3ea0/0x5be0 mm/memory.c:3889
 handle_mm_fault+0x54f/0xc70 mm/memory.c:3926
 do_user_addr_fault arch/x86/mm/fault.c:1423 [inline]
 __do_page_fault+0x5e8/0xe60 arch/x86/mm/fault.c:1489
 do_page_fault+0xf2/0x7e0 arch/x86/mm/fault.c:1520
 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1139
RIP: 0033:0x45ddf3
Code: Bad RIP value.
RSP: 002b:000000c42001eea0 EFLAGS: 00010202
RAX: ffffffffffffff92 RBX: 000000003b980b34 RCX: 000000000045ddf3
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000014ecf00
RBP: 000000c42001eee8 R08: 0000000000000000 R09: 0000000000000000
R10: 000000c42001eed8 R11: 0000000000000202 R12: 0000000000000001
R13: 000000c43cde6540 R14: 0000000000000001 R15: 0000000000000000
warn_alloc_show_mem: 1 callbacks suppressed
CPU: 1 PID: 10189 Comm: syz-executor4 Not tainted 4.20.0-rc2+ #118
Mem-Info:
active_anon:147110 inactive_anon:190 isolated_anon:0
 active_file:13 inactive_file:13 isolated_file:2
 unevictable:1 dirty:0 writeback:0 unstable:0
 slab_reclaimable:9259 slab_unreclaimable:1360772
 mapped:49154 shmem:245 pagetables:1010 bounce:0
 free:13705 free_pcp:247 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Node 0 active_anon:588440kB inactive_anon:760kB active_file:52kB inactive_file:52kB unevictable:4kB isolated(anon):0kB isolated(file):8kB mapped:196616kB dirty:0kB writeback:0kB shmem:980kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 548864kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
Call Trace:
Node 0 DMA free:15908kB min:164kB low:204kB high:244kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
 <IRQ>
lowmem_reserve[]: 0 2818 6321 6321
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
Node 0 DMA32 free:25140kB min:30052kB low:37564kB high:45076kB active_anon:22584kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2888776kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 3503 3503
 warn_alloc.cold.116+0xb7/0x1bd mm/page_alloc.c:3423
Node 0 Normal free:13772kB min:37364kB low:46704kB high:56044kB active_anon:565856kB inactive_anon:760kB active_file:52kB inactive_file:52kB unevictable:4kB writepending:0kB present:4718592kB managed:3587816kB mlocked:0kB kernel_stack:7072kB pagetables:4040kB bounce:0kB free_pcp:740kB local_pcp:492kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0
Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15908kB
Node 0 DMA32: 7*4kB (UM) 3*8kB (M) 2*16kB (M) 5*32kB (UM) 3*64kB (M) 3*128kB (M) 3*256kB (M) 4*512kB (UM) 3*1024kB (UM) 1*2048kB (M) 4*4096kB (M) = 25140kB
Node 0 Normal: 963*4kB (ME) 560*8kB (UME) 222*16kB (UME) 45*32kB (UM) 1*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 0*1024kB 0*2048kB 0*4096kB = 13772kB
 __alloc_pages_slowpath+0x2651/0x2de0 mm/page_alloc.c:4291
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
274 total pagecache pages
0 pages in swap cache
Swap cache stats: add 0, delete 0, find 0/0
Free swap  = 0kB
Total swap = 0kB
1965979 pages RAM
0 pages HighMem/MovableOnly
342854 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)
syz-fuzzer cpuset=/ mems_allowed=0
 __alloc_pages_nodemask+0xad8/0xea0 mm/page_alloc.c:4393
 __alloc_pages include/linux/gfp.h:473 [inline]
 __alloc_pages_node include/linux/gfp.h:486 [inline]
 kmem_getpages mm/slab.c:1409 [inline]
 cache_grow_begin+0xa5/0x8c0 mm/slab.c:2677
 fallback_alloc+0x204/0x2e0 mm/slab.c:3219
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
 slab_alloc_node mm/slab.c:3327 [inline]
 kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:997 [inline]
 nlmsg_new include/net/netlink.h:654 [inline]
 __br_mdb_notify+0x4ff/0x15d0 net/bridge/br_mdb.c:407
 br_mdb_notify+0x310/0x410 net/bridge/br_mdb.c:440
 br_multicast_del_pg+0x3df/0x790 net/bridge/br_multicast.c:292
 br_multicast_port_group_expired+0x189/0x1e0 net/bridge/br_multicast.c:316
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
 __do_softirq+0x308/0xb7e kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x17f/0x1c0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:804
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline]
RIP: 0010:slab_alloc mm/slab.c:3385 [inline]
RIP: 0010:kmem_cache_alloc+0x297/0x730 mm/slab.c:3552
Code: 7e 0f 85 cf fe ff ff e8 b6 fb 3d ff e9 c5 fe ff ff e8 5d 31 c3 ff 48 83 3d f5 79 8f 07 00 0f 84 41 03 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 e9 54 fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 1a b1
RSP: 0000:ffff888145617738 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff88819eb88f40 RDI: 0000000000000286
RBP: ffff8881456177a0 R08: ffff88819eb886c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8881d9bdcc00 R14: ffff8881d9bdcc00 R15: 0000000000480020
 skb_clone+0x1bb/0x500 net/core/skbuff.c:1280
 ____bpf_clone_redirect net/core/filter.c:2080 [inline]
 bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2067
 bpf_prog_e113bbc17aa3fb19+0xfb/0x1000
CPU: 0 PID: 6052 Comm: syz-fuzzer Not tainted 4.20.0-rc2+ #118
syz-executor4: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
syz-executor4 cpuset=syz4 mems_allowed=0
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
 warn_alloc.cold.116+0xb7/0x1bd mm/page_alloc.c:3423
 __alloc_pages_slowpath+0x2651/0x2de0 mm/page_alloc.c:4291
 __alloc_pages_nodemask+0xad8/0xea0 mm/page_alloc.c:4393
 __alloc_pages include/linux/gfp.h:473 [inline]
 __alloc_pages_node include/linux/gfp.h:486 [inline]
 kmem_getpages mm/slab.c:1409 [inline]
 cache_grow_begin+0xa5/0x8c0 mm/slab.c:2677
 fallback_alloc+0x204/0x2e0 mm/slab.c:3219
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
 slab_alloc_node mm/slab.c:3327 [inline]
 kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:997 [inline]
 ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403
 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669
 addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
 __do_softirq+0x308/0xb7e kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x17f/0x1c0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:804
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline]
RIP: 0010:console_unlock+0x102f/0x1190 kernel/printk/printk.c:2418
Code: 70 fb 51 89 48 89 f8 48 c1 e8 03 42 80 3c 20 00 75 36 48 83 3d d1 77 ec 07 00 74 25 e8 4a 07 1a 00 48 8b bd b0 fe ff ff 57 9d <0f> 1f 44 00 00 e9 9a f8 ff ff 4c 89 ef e8 4f 56 5d 00 e9 f2 fb ff
RSP: 0000:ffff8881b2d25e40 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff8881c30ae280 RBX: 0000000000000200 RCX: 1ffff11038615d73
RDX: 0000000000000000 RSI: ffffffff816583a6 RDI: 0000000000000293
RBP: ffff8881b2d25fb0 R08: ffff8881c30aeb98 R09: 0000000000000006
R10: 0000000000000000 R11: ffff8881c30ae280 R12: dffffc0000000000
R13: ffffffff849ca5e0 R14: dffffc0000000000 R15: ffffffff89b63570
 vprintk_emit+0x391/0x990 kernel/printk/printk.c:1922
 vprintk_default+0x28/0x30 kernel/printk/printk.c:1964
 vprintk_func+0x7e/0x181 kernel/printk/printk_safe.c:398
 printk+0xa7/0xcf kernel/printk/printk.c:1997
 dump_unreclaimable_slab.cold.22+0xd8/0xe6 mm/slab_common.c:1392
 dump_header+0x7cc/0xf72 mm/oom_kill.c:447
 oom_kill_process.cold.27+0x10/0x903 mm/oom_kill.c:953
 out_of_memory+0xa84/0x1430 mm/oom_kill.c:1120
 __alloc_pages_may_oom mm/page_alloc.c:3519 [inline]
 __alloc_pages_slowpath+0x232c/0x2de0 mm/page_alloc.c:4229
 __alloc_pages_nodemask+0xad8/0xea0 mm/page_alloc.c:4393
 alloc_pages_current+0x173/0x350 mm/mempolicy.c:2080
 alloc_pages include/linux/gfp.h:509 [inline]
 __page_cache_alloc+0x38c/0x5c0 mm/filemap.c:924
 page_cache_read mm/filemap.c:2312 [inline]
 filemap_fault+0x1595/0x25f0 mm/filemap.c:2496
 ext4_filemap_fault+0x82/0xad fs/ext4/inode.c:6292
 __do_fault+0x100/0x6b0 mm/memory.c:2996
 do_read_fault mm/memory.c:3408 [inline]
 do_fault mm/memory.c:3534 [inline]
 handle_pte_fault mm/memory.c:3765 [inline]
 __handle_mm_fault+0x3ea0/0x5be0 mm/memory.c:3889
 handle_mm_fault+0x54f/0xc70 mm/memory.c:3926
 do_user_addr_fault arch/x86/mm/fault.c:1423 [inline]
 __do_page_fault+0x5e8/0xe60 arch/x86/mm/fault.c:1489
 do_page_fault+0xf2/0x7e0 arch/x86/mm/fault.c:1520
 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1139
RIP: 0033:0x45ddf3
Code: Bad RIP value.
RSP: 002b:000000c42001eea0 EFLAGS: 00010202
RAX: ffffffffffffff92 RBX: 000000003b980b34 RCX: 000000000045ddf3
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000014ecf00
RBP: 000000c42001eee8 R08: 0000000000000000 R09: 0000000000000000
R10: 000000c42001eed8 R11: 0000000000000202 R12: 0000000000000001
R13: 000000c43cde6540 R14: 0000000000000001 R15: 0000000000000000

Crashes (109):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2018/11/19 05:44 upstream c67a98c00ea3 adf636a8 .config console log report ci-upstream-kasan-gce-smack-root
2019/02/04 08:12 net-old 2348bb3117e1 c198d5dd .config console log report ci-upstream-net-this-kasan-gce
2018/12/21 04:03 bpf bcb671c2fa0e 2b497001 .config console log report ci-upstream-bpf-kasan-gce
2018/12/19 07:18 bpf bcb671c2fa0e 4edaba93 .config console log report ci-upstream-bpf-kasan-gce
2018/12/10 02:49 bpf 51a11b14c29c 96cc4c50 .config console log report ci-upstream-bpf-kasan-gce
2018/12/05 01:22 bpf a92a72a24d48 f162ad97 .config console log report ci-upstream-bpf-kasan-gce
2018/12/01 03:28 bpf c01ac66b3866 d8988561 .config console log report ci-upstream-bpf-kasan-gce
2018/11/27 23:55 bpf 2b9034b5eadd 4b6d14f2 .config console log report ci-upstream-bpf-kasan-gce
2018/11/20 18:21 bpf 569a933b03f3 9aca6b52 .config console log report ci-upstream-bpf-kasan-gce
2018/11/20 06:13 bpf 569a933b03f3 9bc2a903 .config console log report ci-upstream-bpf-kasan-gce
2018/11/19 23:18 bpf 569a933b03f3 adf636a8 .config console log report ci-upstream-bpf-kasan-gce
2018/11/18 22:17 bpf 569a933b03f3 adf636a8 .config console log report ci-upstream-bpf-kasan-gce
2018/11/17 02:12 bpf da85d8bfd151 b08ee62a .config console log report ci-upstream-bpf-kasan-gce
2018/11/16 15:38 bpf da85d8bfd151 f5e275d1 .config console log report ci-upstream-bpf-kasan-gce
2018/11/16 04:45 bpf da85d8bfd151 3a41052e .config console log report ci-upstream-bpf-kasan-gce
2018/11/15 21:35 bpf da85d8bfd151 3a41052e .config console log report ci-upstream-bpf-kasan-gce
2018/11/14 10:39 bpf da85d8bfd151 5f5f6d14 .config console log report ci-upstream-bpf-kasan-gce
2018/11/04 18:41 bpf 28c2fae726bf 8bd6bd63 .config console log report ci-upstream-bpf-kasan-gce
2018/11/04 09:18 bpf 28c2fae726bf 8bd6bd63 .config console log report ci-upstream-bpf-kasan-gce
2018/11/03 01:04 bpf 7de414a9dd91 8bd6bd63 .config console log report ci-upstream-bpf-kasan-gce
2018/11/01 05:23 bpf 361535321874 1f38e9ae .config console log report ci-upstream-bpf-kasan-gce
2018/10/31 09:04 bpf 27b31e68bc9f 4ccf7bb4 .config console log report ci-upstream-bpf-kasan-gce
2018/10/28 20:23 bpf d8fd9e106fbc 6f9b225a .config console log report ci-upstream-bpf-kasan-gce
2018/10/25 12:08 bpf 44adbac8f721 a8292de9 .config console log report ci-upstream-bpf-kasan-gce
2018/10/25 09:24 bpf 44adbac8f721 a8292de9 .config console log report ci-upstream-bpf-kasan-gce
2018/10/25 00:28 bpf 44adbac8f721 a8292de9 .config console log report ci-upstream-bpf-kasan-gce
2018/10/11 10:42 net-old 52b5d6f5dcf0 5f818b4b .config console log report ci-upstream-net-this-kasan-gce
2018/09/12 05:46 bpf 28619527b8a7 3c88136c .config console log report ci-upstream-bpf-kasan-gce
2019/03/04 02:07 bpf-next ea5bade929bf 1c0e457a .config console log report ci-upstream-bpf-next-kasan-gce
2018/12/09 03:34 bpf-next 6baefa1aa46f c7918378 .config console log report ci-upstream-bpf-next-kasan-gce
2018/12/05 09:21 bpf-next 2a95471c3397 f162ad97 .config console log report ci-upstream-bpf-next-kasan-gce
2018/12/04 14:44 bpf-next d59dd69d5576 6ad0ae61 .config console log report ci-upstream-bpf-next-kasan-gce
2018/12/03 18:29 bpf-next 5482e9a93c83 819002b0 .config console log report ci-upstream-bpf-next-kasan-gce
2018/11/28 08:09 bpf-next 17d95e4225bf 4b6d14f2 .config console log report ci-upstream-bpf-next-kasan-gce
2018/11/22 11:35 bpf-next e4b0c94bd24c 2ee77802 .config console log report ci-upstream-bpf-next-kasan-gce
2018/11/18 06:38 bpf-next 592ee43faf86 adf636a8 .config console log report ci-upstream-bpf-next-kasan-gce
2018/11/17 16:15 bpf-next 592ee43faf86 b08ee62a .config console log report ci-upstream-bpf-next-kasan-gce
2018/11/16 22:13 bpf-next 407be8d03e20 b08ee62a .config console log report ci-upstream-bpf-next-kasan-gce
2018/11/16 11:38 bpf-next 407be8d03e20 f5e275d1 .config console log report ci-upstream-bpf-next-kasan-gce
2018/11/14 03:21 bpf-next 407be8d03e20 5f5f6d14 .config console log report ci-upstream-bpf-next-kasan-gce
2018/11/13 18:53 bpf-next 407be8d03e20 5f5f6d14 .config console log report ci-upstream-bpf-next-kasan-gce
2018/11/09 01:14 bpf-next bce6a14996f9 e85d2a61 .config console log report ci-upstream-bpf-next-kasan-gce
2018/11/06 19:12 bpf-next 44adbac8f721 8bd6bd63 .config console log report ci-upstream-bpf-next-kasan-gce
2018/11/06 09:24 bpf-next 44adbac8f721 8bd6bd63 .config console log report ci-upstream-bpf-next-kasan-gce
2018/11/05 15:13 bpf-next 44adbac8f721 8bd6bd63 .config console log report ci-upstream-bpf-next-kasan-gce
2018/11/03 15:21 bpf-next 44adbac8f721 8bd6bd63 .config console log report ci-upstream-bpf-next-kasan-gce
2018/11/02 15:01 bpf-next 44adbac8f721 1f38e9ae .config console log report ci-upstream-bpf-next-kasan-gce
2018/10/31 19:33 bpf-next 44adbac8f721 89781090 .config console log report ci-upstream-bpf-next-kasan-gce
2018/10/30 14:10 bpf-next 44adbac8f721 8dbb755a .config console log report ci-upstream-bpf-next-kasan-gce
2018/10/29 21:54 bpf-next 44adbac8f721 7df9db2e .config console log report ci-upstream-bpf-next-kasan-gce
2018/10/26 18:28 bpf-next 44adbac8f721 a8292de9 .config console log report ci-upstream-bpf-next-kasan-gce
2018/10/24 23:01 bpf-next 44adbac8f721 a8292de9 .config console log report ci-upstream-bpf-next-kasan-gce
2018/10/11 12:38 net-next-old b7ec45a868af 5f818b4b .config console log report ci-upstream-net-kasan-gce
2018/11/19 03:31 linux-next 442b8cea2477 adf636a8 .config console log report ci-upstream-linux-next-kasan-gce-root
* Struck through repros no longer work on HEAD.