Node 0 DMA32 free:35596kB min:36248kB low:45308kB high:54368kB active_anon:1837664kB inactive_anon:2972kB active_file:112kB inactive_file:172kB unevictable:0kB writepending:0kB present:3129332kB managed:2619972kB mlocked:0kB kernel_stack:10560kB pagetables:16088kB bounce:0kB free_pcp:1232kB local_pcp:960kB free_cma:0kB INFO: task udevd:4685 blocked for more than 140 seconds. Not tainted 4.19.73 #0 lowmem_reserve[]: 0 0 2 2 Node 0 Normal free:8kB min:32kB low:40kB high:48kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:786432kB managed:2428kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. lowmem_reserve[]: 0 0 0 0 Node 1 Normal free:53300kB min:53608kB low:67008kB high:80408kB active_anon:3661624kB inactive_anon:0kB active_file:4kB inactive_file:0kB unevictable:0kB writepending:0kB present:3932160kB managed:3870184kB mlocked:0kB kernel_stack:8160kB pagetables:17624kB bounce:0kB free_pcp:12kB local_pcp:12kB free_cma:0kB udevd D26456 4685 3602 0x00000000 Call Trace: context_switch kernel/sched/core.c:2826 [inline] __schedule+0x866/0x1dc0 kernel/sched/core.c:3474 lowmem_reserve[]: 0 0 0 0 Node 0 DMA: 11*4kB (UMEH) 9*8kB (UMEH) 6*16kB (UMH) 3*32kB (UEH) 4*64kB (UMEH) 3*128kB (MEH) 3*256kB (UEH) 3*512kB (MEH) 3*1024kB (UEH) 2*2048kB (UE) 0*4096kB = 10420kB schedule+0x92/0x1c0 kernel/sched/core.c:3518 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3576 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1300 kernel/locking/mutex.c:1072 Node 0 DMA32: 0*4kB 68*8kB (U) 677*16kB (UE) 705*32kB (UEH) 1*64kB (H) 1*128kB (H) 1*256kB (H) 0*512kB 1*1024kB (H) 0*2048kB 0*4096kB = 35408kB Node 0 Normal: 0*4kB 1*8kB (U) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 8kB Node 1 Normal: 1428*4kB (UME) 935*8kB (UME) 598*16kB (UME) 337*32kB (UME) 105*64kB (UE) 24*128kB (UE) 3*256kB (UE) 2*512kB (ME) 2*1024kB (ME) 3*2048kB (UM) 0*4096kB = 53320kB 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 Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB 953 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 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 0 pages HighMem/MovableOnly 338856 pages reserved process_measurement+0x354/0x1560 security/integrity/ima/ima_main.c:224 0 pages cma reserved Out of memory: Kill process 956 (syz-executor.1) score 1005 or sacrifice child Killed process 956 (syz-executor.1) total-vm:72580kB, anon-rss:172kB, file-rss:34816kB, shmem-rss:0kB blkid invoked oom-killer: gfp_mask=0x6200ca(GFP_HIGHUSER_MOVABLE), nodemask=(null), order=0, oom_score_adj=-1000 blkid cpuset=/ mems_allowed=0-1 CPU: 1 PID: 4947 Comm: blkid Not tainted 4.19.73 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 dump_header+0x15e/0xa55 mm/oom_kill.c:441 oom_kill_process.cold+0x10/0x6ef mm/oom_kill.c:954 out_of_memory mm/oom_kill.c:1129 [inline] out_of_memory+0x936/0x12d0 mm/oom_kill.c:1062 __alloc_pages_may_oom mm/page_alloc.c:3543 [inline] __alloc_pages_slowpath+0x20af/0x2870 mm/page_alloc.c:4245 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4409 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2193 alloc_pages include/linux/gfp.h:509 [inline] __page_cache_alloc mm/filemap.c:968 [inline] __page_cache_alloc+0x2bd/0x450 mm/filemap.c:953 page_cache_read mm/filemap.c:2407 [inline] filemap_fault+0x10bb/0x2250 mm/filemap.c:2591 ext4_filemap_fault+0x83/0xaf fs/ext4/inode.c:6304 __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: 0033:0x7f0052a09008 Code: Bad RIP value. RSP: 002b:00007ffe14f86450 EFLAGS: 00010246 RAX: 0000000000000005 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000008100000 RSI: 0000000000000000 RDI: 0000000000f17260 RBP: 0000000000f180c6 R08: 0000000000000000 R09: 0000000000f180c6 R10: 0000000000000001 R11: 0000000000008000 R12: 0000000000000000 R13: 0000000000000200 R14: 0000000000000000 R15: 0000000000f18086 ima_file_check+0xc5/0x110 security/integrity/ima/ima_main.c:391