RAX: ffffffffffffffda RBX: 0000000002252e50 RCX: 00007f3ef6883120 RDX: 00000000000001b6 RSI: 0000000000000000 RDI: 00007f3ef6900aa4 RBP: 00007ffcf4164ae0 R08: 0000000000000008 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008 R13: 00007f3ef68fefc0 R14: 000000000000002f R15: 00007ffcf4164dd8 Kernel panic - not syncing: corrupted stack end detected inside scheduler CPU: 0 PID: 22332 Comm: kworker/u4:4 Not tainted 4.20.0-rc6+ #374 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 panic+0x2ad/0x55c kernel/panic.c:188 schedule_debug kernel/sched/core.c:3285 [inline] __schedule+0x21c6/0x21d0 kernel/sched/core.c:3394 preempt_schedule_irq+0xb9/0x140 kernel/sched/core.c:3699 retint_kernel+0x1b/0x2d RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:23 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:67 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x11/0x50 kernel/kcov.c:101 Code: 7c 10 e0 4a 89 74 10 e8 4a 89 54 10 f0 4a 89 4c d8 20 4c 89 08 5d c3 66 90 55 48 89 e5 48 8b 75 08 65 48 8b 04 25 40 ee 01 00 <65> 8b 15 48 69 82 7e 81 e2 00 01 1f 00 75 2b 8b 90 d8 12 00 00 83 RSP: 0018:ffff8880293fb590 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 RAX: ffff8881d2e9c600 RBX: ffff8880293fb900 RCX: ffffffff81b71231 RDX: 0000000000000001 RSI: ffffffff81b71243 RDI: 0000000000000007 RBP: ffff8880293fb590 R08: ffff8881d2e9c600 R09: ffffed10376ac0bb R10: ffffed10376ac0bb R11: ffff8881bb5605db R12: 00000001b8ba5067 R13: 00000001b8ba5067 R14: 0000000000000001 R15: 00000001794fe005 pmd_pfn_mask arch/x86/include/asm/pgtable_types.h:422 [inline] pmd_pfn arch/x86/include/asm/pgtable.h:205 [inline] pte_lockptr include/linux/mm.h:1884 [inline] map_pte mm/page_vma_mapped.c:50 [inline] page_vma_mapped_walk+0x17e3/0x27c0 mm/page_vma_mapped.c:213 page_referenced_one+0x2cb/0x840 mm/rmap.c:764 rmap_walk_file+0x80a/0x1190 mm/rmap.c:1879 Mem-Info: active_anon:1372927 inactive_anon:212 isolated_anon:0 active_file:76 inactive_file:101 isolated_file:26 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:12295 slab_unreclaimable:105733 mapped:49288 shmem:294 pagetables:8608 bounce:0 free:24261 free_pcp:477 free_cma:0 Node 0 active_anon:5491708kB inactive_anon:848kB active_file:304kB inactive_file:404kB unevictable:0kB isolated(anon):0kB isolated(file):104kB mapped:197152kB dirty:0kB writeback:0kB shmem:1176kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 542720kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no 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 rmap_walk+0x22c/0x350 mm/rmap.c:1897 Node 0 DMA32 free:43932kB min:30052kB low:37564kB high:45076kB active_anon:2793684kB inactive_anon:4kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2888780kB mlocked:0kB kernel_stack:3584kB pagetables:13272kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 0 3503 3503 Node 0 Normal free:37204kB min:37364kB low:46704kB high:56044kB active_anon:2698024kB inactive_anon:844kB active_file:404kB inactive_file:660kB unevictable:0kB writepending:0kB present:4718592kB managed:3587816kB mlocked:0kB kernel_stack:15968kB pagetables:21160kB bounce:0kB free_pcp:1908kB local_pcp:1476kB 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 page_referenced+0x864/0xaa0 mm/rmap.c:874 Node 0 DMA32: 215*4kB (UME) 58*8kB (UME) 27*16kB (UME) 18*32kB (UME) 4*64kB (UE) 1*128kB (E) 1*256kB (M) 2*512kB (UM) 1*1024kB (E) 1*2048kB (E) 9*4096kB (M) = 43932kB Node 0 Normal: 530*4kB (UM) 2733*8kB (UMEH) 632*16kB (UMEH) 99*32kB (UME) 1*64kB (M) 1*128kB (M) 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 37456kB 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 485 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB shrink_active_list+0x904/0x1f00 mm/vmscan.c:2139 Total swap = 0kB 1965979 pages RAM 0 pages HighMem/MovableOnly 342853 pages reserved 0 pages cma reserved Out of memory: Kill process 7949 (syz-executor0) score 1005 or sacrifice child Killed process 7949 (syz-executor0) total-vm:70340kB, anon-rss:2196kB, file-rss:32768kB, shmem-rss:0kB shrink_list mm/vmscan.c:2271 [inline] shrink_node_memcg+0x803/0x18f0 mm/vmscan.c:2540 shrink_node+0x3bc/0x16b0 mm/vmscan.c:2755 shrink_zones mm/vmscan.c:2987 [inline] do_try_to_free_pages+0x3e7/0x1290 mm/vmscan.c:3049 try_to_free_pages+0x4d0/0xb90 mm/vmscan.c:3264 __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] depot_save_stack+0x3f1/0x470 lib/stackdepot.c:260 save_stack+0xa9/0xd0 mm/kasan/kasan.c:454 set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xc7/0xe0 mm/kasan/kasan.c:553 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:490 slab_post_alloc_hook mm/slab.h:444 [inline] slab_alloc mm/slab.c:3392 [inline] __do_kmalloc mm/slab.c:3720 [inline] __kmalloc+0x144/0x760 mm/slab.c:3731 kmalloc_array include/linux/slab.h:669 [inline] kcalloc include/linux/slab.h:680 [inline] ext4_find_extent+0x757/0x9b0 fs/ext4/extents.c:888 ext4_ext_map_blocks+0x291/0x48f0 fs/ext4/extents.c:4223 ext4_map_blocks+0xe2d/0x1b50 fs/ext4/inode.c:559 ext4_mpage_readpages+0xfba/0x2400 fs/ext4/readpage.c:181 ext4_readpages+0xe0/0x120 fs/ext4/inode.c:3374 read_pages+0x13a/0x680 mm/readahead.c:123 __do_page_cache_readahead+0x560/0x810 mm/readahead.c:187 ra_submit mm/internal.h:66 [inline] ondemand_readahead+0x54c/0xcc0 mm/readahead.c:491 page_cache_sync_readahead+0x39c/0x6d0 mm/readahead.c:526 generic_file_buffered_read mm/filemap.c:2019 [inline] generic_file_read_iter+0x1b8e/0x2d70 mm/filemap.c:2289 ext4_file_read_iter+0x18b/0x3c0 fs/ext4/file.c:77 call_read_iter include/linux/fs.h:1851 [inline] new_sync_read fs/read_write.c:406 [inline] __vfs_read+0x6ac/0x9b0 fs/read_write.c:418 integrity_kernel_read+0x14b/0x200 security/integrity/iint.c:204 ima_calc_file_hash_tfm+0x38d/0x450 security/integrity/ima/ima_crypto.c:356 ima_calc_file_shash security/integrity/ima/ima_crypto.c:385 [inline] ima_calc_file_hash+0x222/0x570 security/integrity/ima/ima_crypto.c:450 ima_collect_measurement+0x619/0x730 security/integrity/ima/ima_api.c:232 process_measurement+0x11fd/0x1bf0 security/integrity/ima/ima_main.c:284 ima_bprm_check+0x11e/0x2e0 security/integrity/ima/ima_main.c:366 security_bprm_check+0x85/0xb0 security/security.c:364 search_binary_handler+0x77/0x570 fs/exec.c:1641 exec_binprm fs/exec.c:1695 [inline] __do_execve_file.isra.33+0x1661/0x25d0 fs/exec.c:1819 do_execveat_common fs/exec.c:1866 [inline] do_execve+0x33/0x40 fs/exec.c:1883 call_usermodehelper_exec_async+0x6cf/0xa80 kernel/umh.c:107 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Kernel Offset: disabled Rebooting in 86400 seconds..