syzbot


INFO: task hung in __get_metapage (2)

Status: upstream: reported C repro on 2024/04/06 18:07
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+02652caa999f98dede40@syzkaller.appspotmail.com
First crash: 74d, last: 31d
Bug presence (1)
Date Name Commit Repro Result
2024/04/23 upstream (ToT) 71b1543c83d6 C [report] INFO: task hung in lock_metapage
Similar bugs (5)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in __get_metapage (2) jfs C 100 2d13h 106d 0/27 upstream: reported C repro on 2024/03/06 10:57
upstream INFO: task hung in __get_metapage jfs C error done 32 164d 618d 26/27 fixed on 2024/02/21 18:23
linux-6.1 INFO: task hung in __get_metapage 49 38d 70d 0/3 upstream: reported on 2024/04/11 09:44
linux-4.19 INFO: task hung in __get_metapage jfs C error 1 529d 529d 0/1 upstream: reported C repro on 2023/01/08 09:57
linux-5.15 INFO: task hung in __get_metapage 1 439d 439d 0/3 auto-obsoleted due to no activity on 2023/08/06 10:00

Sample crash report:
INFO: task jfsCommit:276 blocked for more than 143 seconds.
      Not tainted 5.15.153-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jfsCommit       state:D stack:25728 pid:  276 ppid:     2 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5030 [inline]
 __schedule+0x12c4/0x45b0 kernel/sched/core.c:6376
 schedule+0x11b/0x1f0 kernel/sched/core.c:6459
 io_schedule+0x88/0x100 kernel/sched/core.c:8484
 __lock_metapage+0x1ec/0x3c0 fs/jfs/jfs_metapage.c:49
 lock_metapage fs/jfs/jfs_metapage.c:63 [inline]
 __get_metapage+0x495/0x1070 fs/jfs/jfs_metapage.c:640
 diIAGRead+0xcb/0x130 fs/jfs/jfs_imap.c:2669
 diFree+0xa7a/0x2fb0 fs/jfs/jfs_imap.c:956
 jfs_evict_inode+0x329/0x440 fs/jfs/inode.c:156
 evict+0x2a4/0x620 fs/inode.c:587
 txUpdateMap+0x825/0x9e0 fs/jfs/jfs_txnmgr.c:2401
 txLazyCommit fs/jfs/jfs_txnmgr.c:2698 [inline]
 jfs_lazycommit+0x470/0xc30 fs/jfs/jfs_txnmgr.c:2766
 kthread+0x3f6/0x4f0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/27:
 #0: ffffffff8c91f720 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by jfsCommit/276:
 #0: ffff8880149b8920 (&(imap->im_aglock[index])){+.+.}-{3:3}, at: diFree+0x378/0x2fb0 fs/jfs/jfs_imap.c:886
 #1: ffff888074ec9cf8 (&jfs_ip->rdwrlock/1){.+.+}-{3:3}, at: diFree+0x394/0x2fb0 fs/jfs/jfs_imap.c:891
2 locks held by getty/3262:
 #0: ffff88802456f098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
 #1: ffffc90002bab2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 drivers/tty/n_tty.c:2158
2 locks held by syz-executor386/4710:

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

NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.153-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
 watchdog+0xe72/0xeb0 kernel/hung_task.c:295
 kthread+0x3f6/0x4f0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4710 Comm: syz-executor386 Not tainted 5.15.153-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:kasan_check_range+0x1/0x290 mm/kasan/generic.c:188
Code: 01 c6 48 89 c7 e8 6f a0 52 08 31 c0 c3 0f 0b b8 ea ff ff ff c3 0f 0b b8 ea ff ff ff c3 cc cc cc cc cc cc cc cc cc cc cc cc 55 <41> 57 41 56 53 b0 01 48 85 f6 0f 84 9a 01 00 00 48 89 fd 48 01 f5
RSP: 0018:ffffc900070e7838 EFLAGS: 00000246
RAX: ffffffff81b2051a RBX: ffffea0001ba8c18 RCX: ffffffff81b20527
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffea0001ba8c00
RBP: ffffc900070e7b70 R08: ffffffff81ad2547 R09: fffff94000375181
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffea0001ba8c00
R13: 1ffff92000e1cf34 R14: ffff88801a096d08 R15: dffffc0000000000
FS:  0000555556822380(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbb03366000 CR3: 000000001b07b000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 instrument_atomic_read include/linux/instrumented.h:71 [inline]
 test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
 PageCompound include/linux/page-flags.h:212 [inline]
 page_mapped+0x27/0x280 mm/util.c:766
 truncate_cleanup_page+0x1b/0x440 mm/truncate.c:172
 truncate_inode_page+0x85/0xb0 mm/truncate.c:218
 shmem_undo_range+0x535/0x1b50 mm/shmem.c:960
 shmem_truncate_range mm/shmem.c:1063 [inline]
 shmem_evict_inode+0x21b/0xa00 mm/shmem.c:1145
 evict+0x2a4/0x620 fs/inode.c:587
 __dentry_kill+0x436/0x650 fs/dcache.c:582
 dentry_kill+0xbb/0x290
 dput+0xd8/0x1a0 fs/dcache.c:889
 __fput+0x5ec/0x890 fs/file_table.c:288
 task_work_run+0x129/0x1a0 kernel/task_work.c:164
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:175
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:208
 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline]
 syscall_exit_to_user_mode+0x5d/0x250 kernel/entry/common.c:301
 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fbb0a7a4f70
Code: ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 80 3d 11 f1 07 00 00 74 17 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c
RSP: 002b:00007fff019f82c8 EFLAGS: 00000202 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 00007fff019f82e0 RCX: 00007fbb0a7a4f70
RDX: 0000000000000010 RSI: 0000000000004c00 RDI: 0000000000000003
RBP: 0000000000000004 R08: 00000000000061fd R09: 00000000000061f9
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000002010880
R13: 00007fff019f8320 R14: 0000000000000003 R15: 0000555556822338
 </TASK>
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.261 msecs

Crashes (120):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/04/08 02:38 linux-5.15.y 9465fef4ae35 ca620dd8 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan INFO: task hung in __get_metapage
2024/05/20 08:04 linux-5.15.y 83655231580b c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __get_metapage
2024/05/08 13:15 linux-5.15.y 284087d4f7d5 4cf3f9b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __get_metapage
2024/05/06 07:55 linux-5.15.y 284087d4f7d5 610f2a54 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __get_metapage
2024/05/04 04:13 linux-5.15.y 284087d4f7d5 610f2a54 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __get_metapage
2024/05/04 02:18 linux-5.15.y 284087d4f7d5 610f2a54 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __get_metapage
2024/04/30 23:43 linux-5.15.y b925f60c6ee7 3ce4924c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __get_metapage
2024/04/30 08:15 linux-5.15.y b925f60c6ee7 f10afd69 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __get_metapage
2024/04/30 08:14 linux-5.15.y b925f60c6ee7 f10afd69 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __get_metapage
2024/04/17 14:01 linux-5.15.y c52b9710c83d 18f6e127 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __get_metapage
2024/04/17 11:11 linux-5.15.y c52b9710c83d 18f6e127 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __get_metapage
2024/04/17 02:37 linux-5.15.y fa3df276cd36 18f6e127 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __get_metapage
2024/04/16 19:02 linux-5.15.y fa3df276cd36 18f6e127 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __get_metapage
2024/04/16 17:13 linux-5.15.y fa3df276cd36 18f6e127 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __get_metapage
2024/04/16 17:13 linux-5.15.y fa3df276cd36 18f6e127 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __get_metapage
2024/04/16 04:48 linux-5.15.y fa3df276cd36 0d592ce4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __get_metapage
2024/04/06 18:06 linux-5.15.y 9465fef4ae35 ca620dd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in __get_metapage
2024/05/11 11:09 linux-5.15.y 284087d4f7d5 9026e142 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/05/11 08:56 linux-5.15.y 284087d4f7d5 9026e142 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/05/10 17:48 linux-5.15.y 284087d4f7d5 f7c35481 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/05/10 16:05 linux-5.15.y 284087d4f7d5 f7c35481 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/05/10 00:57 linux-5.15.y 284087d4f7d5 de979bc2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/05/09 11:46 linux-5.15.y 284087d4f7d5 05079661 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/05/08 16:27 linux-5.15.y 284087d4f7d5 20bf80e1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/05/08 07:52 linux-5.15.y 284087d4f7d5 4cf3f9b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/05/08 03:56 linux-5.15.y 284087d4f7d5 4cf3f9b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/05/07 15:44 linux-5.15.y 284087d4f7d5 cb2dcc0e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/05/06 23:35 linux-5.15.y 284087d4f7d5 fa7a5cf0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/05/06 13:43 linux-5.15.y 284087d4f7d5 d884b519 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/05/05 13:44 linux-5.15.y 284087d4f7d5 610f2a54 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/05/04 05:29 linux-5.15.y 284087d4f7d5 610f2a54 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/05/02 21:42 linux-5.15.y 284087d4f7d5 ddfc15a1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/05/02 18:33 linux-5.15.y 284087d4f7d5 3ba885bc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/05/01 05:53 linux-5.15.y b925f60c6ee7 3ba885bc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/05/01 02:07 linux-5.15.y b925f60c6ee7 3ba885bc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/04/30 14:14 linux-5.15.y b925f60c6ee7 3ce4924c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/04/29 11:27 linux-5.15.y b925f60c6ee7 27e33c58 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/04/27 18:05 linux-5.15.y b925f60c6ee7 07b455f9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/04/26 17:06 linux-5.15.y c52b9710c83d 059e9963 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/04/26 13:24 linux-5.15.y c52b9710c83d 059e9963 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/04/24 16:19 linux-5.15.y c52b9710c83d 8bdc0f22 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/04/23 06:30 linux-5.15.y c52b9710c83d 36c961ad .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/04/22 11:39 linux-5.15.y c52b9710c83d 36c961ad .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/04/22 10:13 linux-5.15.y c52b9710c83d 36c961ad .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/04/21 13:35 linux-5.15.y c52b9710c83d af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/04/19 15:13 linux-5.15.y c52b9710c83d af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/04/19 09:07 linux-5.15.y c52b9710c83d af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/04/18 11:34 linux-5.15.y c52b9710c83d af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/04/18 10:17 linux-5.15.y c52b9710c83d af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/04/18 00:00 linux-5.15.y c52b9710c83d acc528cb .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/04/17 21:45 linux-5.15.y c52b9710c83d acc528cb .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/04/17 16:29 linux-5.15.y c52b9710c83d acc528cb .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/04/17 12:31 linux-5.15.y c52b9710c83d 18f6e127 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/04/16 16:02 linux-5.15.y fa3df276cd36 18f6e127 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/04/16 14:09 linux-5.15.y fa3df276cd36 0d592ce4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/04/16 05:24 linux-5.15.y fa3df276cd36 0d592ce4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
2024/04/16 05:24 linux-5.15.y fa3df276cd36 0d592ce4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: task hung in __get_metapage
* Struck through repros no longer work on HEAD.