syzbot


INFO: task hung in truncate_inode_pages_range (2)

Status: auto-closed as invalid on 2020/02/27 00:38
Reported-by: syzbot+@syzkaller.appspotmail.com
First crash: 1056d, last: 986d
similar bugs (8):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 INFO: task hung in truncate_inode_pages_range C error 1 313d 553d 0/1 upstream: reported C repro on 2021/02/03 07:50
android-44 INFO: task hung in truncate_inode_pages_range 7 1568d 1645d 0/2 auto-closed as invalid on 2019/02/22 13:19
linux-4.14 INFO: task hung in truncate_inode_pages_range C 2 16d 629d 0/1 upstream: reported C repro on 2020/11/19 23:29
android-49 INFO: task hung in truncate_inode_pages_range 86 1486d 1645d 0/3 auto-closed as invalid on 2019/02/22 14:33
upstream INFO: task hung in truncate_inode_pages_range (4) 1 246d 246d 0/23 closed as invalid on 2022/02/08 09:50
upstream INFO: task hung in truncate_inode_pages_range (3) 1 769d 769d 0/23 auto-closed as invalid on 2020/08/31 17:47
upstream INFO: task hung in truncate_inode_pages_range 151 1369d 1704d 0/23 closed as dup on 2017/12/12 16:49
android-49 INFO: task hung in truncate_inode_pages_range (2) 1 1096d 1096d 0/3 auto-closed as invalid on 2019/12/08 23:58

Sample crash report:
INFO: task syz-executor.1:28101 blocked for more than 143 seconds.
      Not tainted 5.4.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.1  D27472 28101  24963 0x00004004
Call Trace:
 context_switch kernel/sched/core.c:3385 [inline]
 __schedule+0x837/0xc50 kernel/sched/core.c:4081
 schedule+0x181/0x210 kernel/sched/core.c:4155
 io_schedule+0x8b/0x100 kernel/sched/core.c:5799
 wait_on_page_bit_common+0x918/0xc90 mm/filemap.c:1175
 wait_on_page_bit+0x46/0x50 mm/filemap.c:1224
 wait_on_page_writeback+0x13e/0x180 mm/page-writeback.c:2822
 truncate_inode_pages_range+0x119b/0x16e0 mm/truncate.c:448
 truncate_inode_pages mm/truncate.c:476 [inline]
 truncate_pagecache mm/truncate.c:817 [inline]
 truncate_setsize+0xd9/0x100 mm/truncate.c:842
 fat_setattr+0x8d4/0xd60 fs/fat/file.c:547
 notify_change+0xa27/0xe70 fs/attr.c:337
 do_truncate+0x194/0x230 fs/open.c:64
 handle_truncate fs/namei.c:2998 [inline]
 do_last fs/namei.c:3414 [inline]
 path_openat+0x2fe3/0x4420 fs/namei.c:3525
 do_filp_open+0x192/0x3d0 fs/namei.c:3555
 do_sys_open+0x29f/0x560 fs/open.c:1097
 ksys_open include/linux/syscalls.h:1385 [inline]
 __do_sys_creat fs/open.c:1155 [inline]
 __se_sys_creat fs/open.c:1153 [inline]
 __x64_sys_creat+0x65/0x70 fs/open.c:1153
 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45a679
Code: Bad RIP value.
RSP: 002b:00007f4f22422c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 000000000045a679
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000700
RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4f224236d4
R13: 00000000004c0f28 R14: 00000000004d4080 R15: 00000000ffffffff
INFO: task syz-executor.1:28110 blocked for more than 143 seconds.
      Not tainted 5.4.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.1  D23800 28110  24963 0x00004004
Call Trace:
 context_switch kernel/sched/core.c:3385 [inline]
 __schedule+0x837/0xc50 kernel/sched/core.c:4081
 schedule+0x181/0x210 kernel/sched/core.c:4155
 io_schedule+0x8b/0x100 kernel/sched/core.c:5799
 wait_on_page_bit_common+0x918/0xc90 mm/filemap.c:1175
 wait_on_page_bit+0x46/0x50 mm/filemap.c:1224
 wait_on_page_writeback+0x13e/0x180 mm/page-writeback.c:2822
 __filemap_fdatawait_range+0x1b5/0x3b0 mm/filemap.c:526
 file_write_and_wait_range+0x141/0x1a0 mm/filemap.c:786
 __generic_file_fsync+0x76/0x1a0 fs/libfs.c:1000
 fat_file_fsync+0x7c/0x190 fs/fat/file.c:199
 vfs_fsync_range+0xfd/0x1a0 fs/sync.c:197
 generic_write_sync include/linux/fs.h:2849 [inline]
 generic_file_write_iter+0x575/0x630 mm/filemap.c:3470
 do_iter_readv_writev+0x651/0x8e0 include/linux/fs.h:1889
 do_iter_write+0x180/0x590 fs/read_write.c:970
 vfs_iter_write+0x7c/0xa0 fs/read_write.c:983
 iter_file_splice_write+0x6d8/0xe20 fs/splice.c:746
 do_splice_from fs/splice.c:848 [inline]
 direct_splice_actor+0xf7/0x130 fs/splice.c:1020
 splice_direct_to_actor+0x463/0xac0 fs/splice.c:975
 do_splice_direct+0x200/0x330 fs/splice.c:1063
 do_sendfile+0x7e4/0xfd0 fs/read_write.c:1464
 __do_sys_sendfile64 fs/read_write.c:1519 [inline]
 __se_sys_sendfile64 fs/read_write.c:1511 [inline]
 __x64_sys_sendfile64+0xfc/0x1b0 fs/read_write.c:1511
 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45a679
Code: Bad RIP value.
RSP: 002b:00007f4f22400c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045a679
RDX: 0000000020000000 RSI: 0000000000000004 RDI: 0000000000000004
RBP: 000000000075c070 R08: 0000000000000000 R09: 0000000000000000
R10: 00008080fffffffe R11: 0000000000000246 R12: 00007f4f224016d4
R13: 00000000004c8623 R14: 00000000004df300 R15: 00000000ffffffff
INFO: task syz-executor.1:28133 blocked for more than 143 seconds.
      Not tainted 5.4.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.1  D28464 28133  24963 0x00004004
Call Trace:
 context_switch kernel/sched/core.c:3385 [inline]
 __schedule+0x837/0xc50 kernel/sched/core.c:4081
 schedule+0x181/0x210 kernel/sched/core.c:4155
 rwsem_down_write_slowpath+0x823/0xde0 kernel/locking/rwsem.c:1238
 __down_write kernel/locking/rwsem.c:1392 [inline]
 down_write+0x12b/0x140 kernel/locking/rwsem.c:1535
 inode_lock include/linux/fs.h:791 [inline]
 process_measurement+0x2d4/0x1800 security/integrity/ima/ima_main.c:230
 ima_file_check+0x9b/0xe0 security/integrity/ima/ima_main.c:438
 do_last fs/namei.c:3412 [inline]
 path_openat+0x1760/0x4420 fs/namei.c:3525
 do_filp_open+0x192/0x3d0 fs/namei.c:3555
 do_sys_open+0x29f/0x560 fs/open.c:1097
 __do_sys_open fs/open.c:1115 [inline]
 __se_sys_open fs/open.c:1110 [inline]
 __x64_sys_open+0x87/0x90 fs/open.c:1110
 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45a679
Code: Bad RIP value.
RSP: 002b:00007f4f223dfc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a679
RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000020000000
RBP: 000000000075c118 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4f223e06d4
R13: 00000000004fc03f R14: 00000000004dd5f0 R15: 00000000ffffffff

Showing all locks held in the system:
1 lock held by khungtaskd/1079:
 #0: ffffffff88ad42c0 (rcu_read_lock){....}, at: rcu_lock_acquire+0x4/0x30 include/linux/rcupdate.h:207
2 locks held by rsyslogd/7888:
 #0: ffff888098fa10e0 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x243/0x2e0 fs/file.c:801
 #1: ffff8880aea36f58 (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1215 [inline]
 #1: ffff8880aea36f58 (&rq->lock){-.-.}, at: __schedule+0xdb/0xc50 kernel/sched/core.c:4029
2 locks held by getty/7980:
 #0: ffff888090d1c090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:272
 #1: ffffc90005f532e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x221/0x1b00 drivers/tty/n_tty.c:2156
2 locks held by getty/7981:
 #0: ffff8880970f2090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:272
 #1: ffffc90005f4f2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x221/0x1b00 drivers/tty/n_tty.c:2156
2 locks held by getty/7982:
 #0: ffff888095ab4090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:272
 #1: ffffc90005f452e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x221/0x1b00 drivers/tty/n_tty.c:2156
2 locks held by getty/7983:
 #0: ffff8880982da090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:272
 #1: ffffc90005f3d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x221/0x1b00 drivers/tty/n_tty.c:2156
2 locks held by getty/7984:
 #0: ffff8880a048c090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:272
 #1: ffffc90005f292e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x221/0x1b00 drivers/tty/n_tty.c:2156
2 locks held by getty/7985:
 #0: ffff88809834a090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:272
 #1: ffffc90005f492e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x221/0x1b00 drivers/tty/n_tty.c:2156
2 locks held by getty/7986:
 #0: ffff8880a4bef090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:272
 #1: ffffc90005f212e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x221/0x1b00 drivers/tty/n_tty.c:2156
3 locks held by syz-executor.1/28101:
 #0: ffff88809155c428 (sb_writers#13){.+.+}, at: sb_start_write include/linux/fs.h:1650 [inline]
 #0: ffff88809155c428 (sb_writers#13){.+.+}, at: mnt_want_write+0x4a/0xa0 fs/namespace.c:354
 #1: ffff8880957575d8 (&sb->s_type->i_mutex_key#22){++++}, at: inode_lock include/linux/fs.h:791 [inline]
 #1: ffff8880957575d8 (&sb->s_type->i_mutex_key#22){++++}, at: do_truncate+0x186/0x230 fs/open.c:62
 #2: ffff888095757478 (&ei->truncate_lock){+.+.}, at: fat_setattr+0x8b9/0xd60 fs/fat/file.c:546
1 lock held by syz-executor.1/28110:
 #0: ffff88809155c428 (sb_writers#13){.+.+}, at: file_start_write include/linux/fs.h:2878 [inline]
 #0: ffff88809155c428 (sb_writers#13){.+.+}, at: do_sendfile+0x7c2/0xfd0 fs/read_write.c:1463
1 lock held by syz-executor.1/28133:
 #0: ffff8880957575d8 (&sb->s_type->i_mutex_key#22){++++}, at: inode_lock include/linux/fs.h:791 [inline]
 #0: ffff8880957575d8 (&sb->s_type->i_mutex_key#22){++++}, at: process_measurement+0x2d4/0x1800 security/integrity/ima/ima_main.c:230

=============================================

NMI backtrace for cpu 1
CPU: 1 PID: 1079 Comm: khungtaskd Not tainted 5.4.0-syzkaller #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+0x1fb/0x318 lib/dump_stack.c:118
 nmi_cpu_backtrace+0xaf/0x1a0 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x174/0x290 lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x10/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 trigger_all_cpu_backtrace+0x17/0x20 include/linux/nmi.h:146
 check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline]
 watchdog+0xd49/0xd60 kernel/hung_task.c:289
 kthread+0x332/0x350 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 28013 Comm: kworker/u4:5 Not tainted 5.4.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_nc_worker
RIP: 0010:debug_lockdep_rcu_enabled+0x77/0xe0 kernel/rcu/update.c:251
Code: 65 4c 8b 34 25 c0 1d 02 00 49 81 c6 94 08 00 00 4c 89 f0 48 c1 e8 03 42 8a 04 38 84 c0 75 59 31 db 41 83 3e 00 0f 94 c3 89 d8 <5b> 41 5e 41 5f 5d c3 48 c7 c1 dc b0 de 88 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffff8880698afc50 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 0000000000000001 RCX: b1cd5b4dc09cab40
RDX: dffffc0000000000 RSI: ffff888096f0caa8 RDI: 0000000000000286
RBP: ffff8880698afc68 R08: dffffc0000000000 R09: fffffbfff12fd195
R10: fffffbfff12fd195 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff8880951f4000 R14: ffff888096f0ca54 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff600400 CR3: 00000000a794b000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 rcu_read_lock include/linux/rcupdate.h:618 [inline]
 batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:407 [inline]
 batadv_nc_worker+0xe1/0x600 net/batman-adv/network-coding.c:718
 process_one_work+0x7ef/0x10d0 kernel/workqueue.c:2264
 worker_thread+0xc01/0x1630 kernel/workqueue.c:2410
 kthread+0x332/0x350 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352

Crashes (10):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-smack-root 2019/11/29 00:29 upstream 81b6b96475ac 76357d6f .config log report
ci-upstream-kasan-gce-smack-root 2019/11/27 16:32 upstream 89d57dddd7d3 0d63f89c .config log report
ci-upstream-kasan-gce-smack-root 2019/11/24 20:20 upstream 6b8a79467876 598ca6c8 .config log report
ci-upstream-kasan-gce-smack-root 2019/11/24 08:39 upstream 6b8a79467876 598ca6c8 .config log report
ci-upstream-kasan-gce-smack-root 2019/11/22 02:37 upstream 81429eb8d9ca 8098ea0f .config log report
ci-upstream-kasan-gce-smack-root 2019/11/21 18:37 upstream c74386d50fba 8098ea0f .config log report
ci-upstream-kasan-gce-smack-root 2019/11/21 08:03 upstream c74386d50fba 8098ea0f .config log report
ci-upstream-kasan-gce-smack-root 2019/11/21 04:04 upstream c74386d50fba 8098ea0f .config log report
ci-upstream-kasan-gce-root 2019/09/20 02:08 upstream 3c2edc36a774 4d3ae0b7 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/11/20 12:53 linux-next 5d1131b4d61e f4b7ed07 .config log report