syzbot


INFO: task hung in process_measurement

Status: auto-closed as invalid on 2020/03/29 20:33
Reported-by: syzbot+7086f5aa2209147ebc5f@syzkaller.appspotmail.com
First crash: 1684d, last: 1609d
Similar bugs (6)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 INFO: task hung in process_measurement 1 278d 278d 0/3 auto-obsoleted due to no activity on 2023/10/31 09:35
upstream INFO: task hung in process_measurement integrity lsm C done inconclusive 52 1003d 2034d 0/26 closed as invalid on 2022/02/08 10:56
upstream INFO: task hung in process_measurement (2) integrity lsm 46 4d12h 230d 0/26 upstream: reported on 2023/09/09 08:36
linux-4.19 INFO: task hung in process_measurement (3) 5 416d 421d 0/1 upstream: reported on 2023/03/02 09:48
linux-4.14 INFO: task hung in process_measurement 3 1503d 1559d 0/1 auto-closed as invalid on 2020/07/13 00:59
linux-4.19 INFO: task hung in process_measurement (2) 1 1278d 1278d 0/1 auto-closed as invalid on 2021/02/23 17:00

Sample crash report:
RDX: 00000000000001b6 RSI: 0000000000000000 RDI: 00007fcd30489aa4
RBP: 00007ffe12d44a30 R08: 0000000000000008 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008
R13: 00007fcd30487fc0 R14: 000000000000002f R15: 00007ffe12d44d28
INFO: task udevd:10388 blocked for more than 140 seconds.
      Not tainted 4.19.86-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
udevd           D26424 10388   3640 0x00000000
Call Trace:
 context_switch kernel/sched/core.c:2826 [inline]
 __schedule+0x866/0x1dc0 kernel/sched/core.c:3515
 schedule+0x92/0x1c0 kernel/sched/core.c:3559
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3617
 __mutex_lock_common kernel/locking/mutex.c:1002 [inline]
 __mutex_lock+0x726/0x1300 kernel/locking/mutex.c:1072
Mem-Info:
active_anon:1366467 inactive_anon:188 isolated_anon:0
 active_file:56 inactive_file:72 isolated_file:11
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:14409 slab_unreclaimable:109218
 mapped:52293 shmem:270 pagetables:7218 bounce:0
 free:25079 free_pcp:0 free_cma:0
Node 0 active_anon:1780460kB inactive_anon:752kB active_file:432kB inactive_file:256kB unevictable:0kB isolated(anon):0kB isolated(file):160kB mapped:209172kB dirty:0kB writeback:0kB shmem:1080kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 135168kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
Node 1 active_anon:3686420kB inactive_anon:0kB active_file:8kB inactive_file:0kB 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:10324kB min:220kB low:272kB high:324kB active_anon:5372kB 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:35532kB min:36168kB low:45208kB high:54248kB active_anon:1775168kB inactive_anon:752kB active_file:192kB inactive_file:208kB unevictable:0kB writepending:0kB present:3129332kB managed:2609760kB mlocked:0kB kernel_stack:12032kB pagetables:13852kB bounce:0kB free_pcp:40kB local_pcp:0kB free_cma:0kB
 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087
 process_measurement+0x354/0x1560 security/integrity/ima/ima_main.c:224
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
Node 1 Normal free:53656kB min:53704kB low:67128kB high:80552kB active_anon:3686420kB inactive_anon:0kB active_file:8kB inactive_file:0kB unevictable:0kB writepending:0kB present:3932160kB managed:3870168kB mlocked:0kB kernel_stack:4128kB pagetables:14924kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 3*4kB (UM) 1*8kB (U) 0*16kB 0*32kB 1*64kB (U) 0*128kB 2*256kB (UM) 1*512kB (M) 1*1024kB (U) 0*2048kB 2*4096kB (M) = 10324kB
Node 0 DMA32: 379*4kB (UMEH) 2876*8kB (UMEH) 521*16kB (UME) 101*32kB (UE) 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 36092kB
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
 ima_file_check+0xc5/0x110 security/integrity/ima/ima_main.c:391
Node 1 Normal: 289*4kB (UM) 31*8kB (UME) 14*16kB (UE) 7*32kB (UME) 2*64kB (UE) 2*128kB (UM) 1*256kB (E) 2*512kB (UE) 1*1024kB (M) 2*2048kB (UM) 11*4096kB (M) = 53692kB

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/11/30 20:32 linux-4.19.y 14260788bbb9 3a75be00 .config console log report ci2-linux-4-19
2019/09/16 08:58 linux-4.19.y db2d0b7c1dde 55c50e70 .config console log report ci2-linux-4-19
* Struck through repros no longer work on HEAD.