INFO: task khugepaged:37 blocked for more than 143 seconds.
      Not tainted 6.10.0-rc7-next-20240712-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:khugepaged      state:D stack:27592 pid:37    tgid:37    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5239 [inline]
 __schedule+0x1800/0x4a60 kernel/sched/core.c:6603
 __schedule_loop kernel/sched/core.c:6680 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6695
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752
 rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
 __down_write_common kernel/locking/rwsem.c:1306 [inline]
 __down_write kernel/locking/rwsem.c:1315 [inline]
 down_write+0x1d7/0x220 kernel/locking/rwsem.c:1580
 mmap_write_lock include/linux/mmap_lock.h:106 [inline]
 collapse_huge_page mm/khugepaged.c:1152 [inline]
 hpage_collapse_scan_pmd+0x24ea/0x4dc0 mm/khugepaged.c:1419
 khugepaged_scan_mm_slot mm/khugepaged.c:2427 [inline]
 khugepaged_do_scan mm/khugepaged.c:2514 [inline]
 khugepaged+0xbe6/0x1dc0 mm/khugepaged.c:2570
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
INFO: task syz.4.618:7820 blocked for more than 143 seconds.
      Not tainted 6.10.0-rc7-next-20240712-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.618       state:D stack:22800 pid:7820  tgid:7819  ppid:6076   flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5239 [inline]
 __schedule+0x1800/0x4a60 kernel/sched/core.c:6603
 __schedule_loop kernel/sched/core.c:6680 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6695
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752
 rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
 __down_read_common kernel/locking/rwsem.c:1250 [inline]
 __down_read kernel/locking/rwsem.c:1263 [inline]
 down_read+0x705/0xa40 kernel/locking/rwsem.c:1528
 mmap_read_lock+0x1c/0x60 include/linux/mmap_lock.h:144
 unmap_single_vma+0x2a0/0x330 mm/memory.c:1832
 unmap_vmas+0x3cc/0x5f0 mm/memory.c:1904
 exit_mmap+0x264/0xc80 mm/mmap.c:3412
 __mmput+0x115/0x390 kernel/fork.c:1347
 exit_mm+0x220/0x310 kernel/exit.c:571
 do_exit+0x9b2/0x27f0 kernel/exit.c:869
 do_group_exit+0x207/0x2c0 kernel/exit.c:1031
 get_signal+0x16a1/0x1740 kernel/signal.c:2917
 arch_do_signal_or_restart+0x96/0x830 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd42d775bd9
RSP: 002b:00007fd42e4870f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fd42d903f68 RCX: 00007fd42d775bd9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fd42d903f68
RBP: 00007fd42d903f60 R08: 00007fd42e4876c0 R09: 00007fd42e4876c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd42d903f6c
R13: 000000000000000b R14: 00007fff14829220 R15: 00007fff14829308
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.10.0-rc7-next-20240712-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
 watchdog+0xfee/0x1030 kernel/hung_task.c:379
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 4545 Comm: klogd Not tainted 6.10.0-rc7-next-20240712-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:607 [inline]
RIP: 0010:__mutex_lock+0x108/0xd70 kernel/locking/mutex.c:752
Code: 83 3d 7b ca e3 08 00 75 21 49 8d 7d 60 48 89 f8 48 c1 e8 03 42 80 3c 20 00 74 05 e8 12 92 5e f6 4d 39 6d 60 0f 85 f3 0a 00 00 <bf> 01 00 00 00 e8 7e 20 c6 f5 49 8d 7d 68 45 31 ff 48 89 7c 24 78
RSP: 0018:ffffc900032d7960 EFLAGS: 00000246
RAX: 1ffffffff1c42628 RBX: 0000000000000000 RCX: ffffffff94808903
RDX: dffffc0000000000 RSI: ffff88807caebc00 RDI: ffffffff8e213140
RBP: ffffc900032d7ab0 R08: ffffc900032d7a27 R09: 0000000000000000
R10: ffffc900032d7a00 R11: fffff5200065af45 R12: dffffc0000000000
R13: ffffffff8e2130e0 R14: 0000000000000000 R15: 0000000000000035
FS:  00007fc123ad8380(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f237dbdefa8 CR3: 000000002abf2000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 syslog_print+0x7d9/0x9c0 kernel/printk/printk.c:1658
 do_syslog+0x3bb/0x810 kernel/printk/printk.c:1758
 __do_sys_syslog kernel/printk/printk.c:1850 [inline]
 __se_sys_syslog kernel/printk/printk.c:1848 [inline]
 __x64_sys_syslog+0x7c/0x90 kernel/printk/printk.c:1848
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc123c39fa7
Code: 73 01 c3 48 8b 0d 81 ce 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 67 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 51 ce 0c 00 f7 d8 64 89 01 48
RSP: 002b:00007fff566d9db8 EFLAGS: 00000206 ORIG_RAX: 0000000000000067
RAX: ffffffffffffffda RBX: 00007fc123dd84a0 RCX: 00007fc123c39fa7
RDX: 00000000000003ff RSI: 00007fc123dd84a0 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000007 R09: 1c396ced2b76050a
R10: 0000000000004000 R11: 0000000000000206 R12: 00007fc123dd84a0
R13: 00007fc123dc8212 R14: 00007fc123dd84fa R15: 00007fc123dd84fa
 </TASK>