RAX: 0000000000000000 RBX: 00007f99d517bf10 RCX: 0000000000000002 RDX: 0000000000014530 RSI: 0000000000014540 RDI: 00007f99d517c000 RBP: 0000000000927eb0 R08: 0000000000000000 R09: 0000000000928116 R10: 0000000000000001 R11: 0000000000000100 R12: 0000000000000001 R13: 0000000000000064 R14: 0000000000928320 R15: 00000000009280e6 Kernel panic - not syncing: corrupted stack end detected inside scheduler CPU: 0 PID: 9677 Comm: syz-executor3 Not tainted 4.20.0-rc7+ #160 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+0x244/0x39d lib/dump_stack.c:113 Mem-Info: panic+0x2ad/0x55c kernel/panic.c:188 active_anon:1369048 inactive_anon:229 isolated_anon:0 active_file:43 inactive_file:29 isolated_file:36 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:14055 slab_unreclaimable:109172 mapped:49217 shmem:290 pagetables:9081 bounce:0 free:24306 free_pcp:116 free_cma:0 Node 0 active_anon:5476192kB inactive_anon:916kB active_file:60kB inactive_file:116kB unevictable:0kB isolated(anon):0kB isolated(file):144kB mapped:196668kB dirty:0kB writeback:0kB shmem:1160kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 405504kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no schedule_debug kernel/sched/core.c:3285 [inline] __schedule+0x21c6/0x21d0 kernel/sched/core.c:3394 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 lowmem_reserve[]: 0 2818 6321 6321 Node 0 DMA32 free:44020kB min:30052kB low:37564kB high:45076kB active_anon:2798336kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2888780kB mlocked:0kB kernel_stack:3840kB pagetables:8688kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 0 3503 3503 preempt_schedule_notrace+0x70/0x140 kernel/sched/core.c:3670 ___preempt_schedule_notrace+0x16/0x31 Node 0 Normal free:37296kB min:37364kB low:46704kB high:56044kB active_anon:2677656kB inactive_anon:916kB active_file:72kB inactive_file:108kB unevictable:0kB writepending:0kB present:4718592kB managed:3587816kB mlocked:0kB kernel_stack:16960kB pagetables:27636kB bounce:0kB free_pcp:664kB local_pcp:216kB free_cma:0kB rcu_is_watching+0x23/0x30 kernel/rcu/tree.c:907 lowmem_reserve[]: 0 0 0 0 rcu_read_lock+0x43/0x70 include/linux/rcupdate.h:608 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 mem_cgroup_iter+0x208/0x1160 mm/memcontrol.c:934 Node 0 DMA32: 609*4kB (UME) 222*8kB (UME) 74*16kB (UME) 27*32kB (UM) 6*64kB (U) 0*128kB 2*256kB (ME) 0*512kB 2*1024kB (UE) 1*2048kB (E) 8*4096kB (M) = 44020kB Node 0 Normal: 892*4kB (UEH) 1542*8kB (UMEH) 699*16kB (UEH) 45*32kB (UE) 3*64kB (UME) 3*128kB (U) 30*256kB (UM) 1*512kB (M) 0*1024kB 0*2048kB 0*4096kB = 37296kB 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 shrink_node+0x340/0x16b0 mm/vmscan.c:2723 359 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 342853 pages reserved shrink_zones mm/vmscan.c:2987 [inline] do_try_to_free_pages+0x3e7/0x1290 mm/vmscan.c:3049 0 pages cma reserved Out of memory: Kill process 9686 (syz-executor3) score 1005 or sacrifice child try_to_free_pages+0x4d0/0xb90 mm/vmscan.c:3264 Killed process 9686 (syz-executor3) total-vm:70340kB, anon-rss:4256kB, file-rss:32768kB, shmem-rss:0kB __perform_reclaim mm/page_alloc.c:3773 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:3795 [inline] __alloc_pages_slowpath+0xa48/0x2de0 mm/page_alloc.c:4185 __alloc_pages_nodemask+0xad8/0xea0 mm/page_alloc.c:4393 alloc_pages_current+0x173/0x350 mm/mempolicy.c:2106 alloc_pages include/linux/gfp.h:509 [inline] __page_cache_alloc+0x38c/0x5c0 mm/filemap.c:924 pagecache_get_page+0x396/0xf00 mm/filemap.c:1554 find_or_create_page include/linux/pagemap.h:322 [inline] ext4_mb_load_buddy_gfp+0xddf/0x1e70 fs/ext4/mballoc.c:1158 ext4_free_blocks+0xbce/0x34f0 fs/ext4/mballoc.c:4856 ext4_remove_blocks fs/ext4/extents.c:2615 [inline] ext4_ext_rm_leaf fs/ext4/extents.c:2768 [inline] ext4_ext_remove_space+0x2557/0x5b50 fs/ext4/extents.c:3010 ext4_ext_truncate+0x1cc/0x220 fs/ext4/extents.c:4543 ext4_truncate+0xf5c/0x1650 fs/ext4/inode.c:4533 ext4_evict_inode+0xa10/0x1ad0 fs/ext4/inode.c:289 evict+0x4b9/0x980 fs/inode.c:558 iput_final fs/inode.c:1550 [inline] iput+0x679/0xa90 fs/inode.c:1576 dentry_unlink_inode+0x461/0x5e0 fs/dcache.c:360 __dentry_kill+0x44c/0x7a0 fs/dcache.c:552 dentry_kill+0xc9/0x680 fs/dcache.c:671 dput.part.25+0x660/0x860 fs/dcache.c:832 dput+0x15/0x20 fs/dcache.c:814 path_put+0x31/0x70 fs/namei.c:484 free_fs_struct+0x22/0x60 fs/fs_struct.c:90 exit_fs+0xf3/0x130 fs/fs_struct.c:107 do_exit+0xf52/0x26d0 kernel/exit.c:863 do_group_exit+0x177/0x440 kernel/exit.c:970 get_signal+0x8b0/0x1980 kernel/signal.c:2517 do_signal+0x9c/0x21c0 arch/x86/kernel/signal.c:816 exit_to_usermode_loop+0x2e5/0x380 arch/x86/entry/common.c:162 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457669 Code: Bad RIP value. RSP: 002b:00007f84a8eb0cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000072bfa8 RCX: 0000000000457669 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000072bfa8 RBP: 000000000072bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000072bfac R13: 00007ffc81c1c86f R14: 00007f84a8eb19c0 R15: 000000000072bfac Kernel Offset: disabled Rebooting in 86400 seconds..