INFO: task syz-executor:6326 blocked for more than 143 seconds.
      Not tainted syzkaller #0
      Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:21464 pid:6326  tgid:6326  ppid:1      task_flags:0x40054c flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5325 [inline]
 __schedule+0x1794/0x4c40 kernel/sched/core.c:6929
 __schedule_loop kernel/sched/core.c:7011 [inline]
 schedule+0x161/0x360 kernel/sched/core.c:7026
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:7083
 rwsem_down_write_slowpath+0x916/0x1090 kernel/locking/rwsem.c:1185
 __down_write_common kernel/locking/rwsem.c:1317 [inline]
 __down_write kernel/locking/rwsem.c:1326 [inline]
 down_write+0x1a7/0x1f0 kernel/locking/rwsem.c:1591
 mmap_write_lock include/linux/mmap_lock.h:312 [inline]
 exit_mmap+0x282/0xb00 mm/mmap.c:1288
 __mmput+0x118/0x430 kernel/fork.c:1133
 exit_mm+0x1d6/0x2b0 kernel/exit.c:582
 do_exit+0x644/0x22f0 kernel/exit.c:954
 do_group_exit+0x218/0x2d0 kernel/exit.c:1107
 get_signal+0x1259/0x1310 kernel/signal.c:3034
 arch_do_signal_or_restart+0x9c/0x790 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop+0x6e/0x120 kernel/entry/common.c:40
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
 do_syscall_64+0x213/0x540 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f6c6c385e13
RSP: 002b:00007ffff5044da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: fffffffffffffff4 RBX: 0000000000000000 RCX: 00007f6c6c385e13
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
R10: 00005555573867d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6c6c5b1280 R14: 0000000000000003 R15: 00007ffff5044f40
 </TASK>
INFO: task syz-executor:6326 is blocked on an rw-semaphore, but the owner is not found.
INFO: task syz-executor:6331 blocked for more than 143 seconds.
      Not tainted syzkaller #0
      Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:21200 pid:6331  tgid:6331  ppid:1      task_flags:0x40054c flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5325 [inline]
 __schedule+0x1794/0x4c40 kernel/sched/core.c:6929
 __schedule_loop kernel/sched/core.c:7011 [inline]
 schedule+0x161/0x360 kernel/sched/core.c:7026
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:7083
 rwsem_down_write_slowpath+0x916/0x1090 kernel/locking/rwsem.c:1185
 __down_write_common kernel/locking/rwsem.c:1317 [inline]
 __down_write kernel/locking/rwsem.c:1326 [inline]
 down_write+0x1a7/0x1f0 kernel/locking/rwsem.c:1591
 mmap_write_lock include/linux/mmap_lock.h:312 [inline]
 exit_mmap+0x282/0xb00 mm/mmap.c:1288
 __mmput+0x118/0x430 kernel/fork.c:1133
 exit_mm+0x1d6/0x2b0 kernel/exit.c:582
 do_exit+0x644/0x22f0 kernel/exit.c:954
 do_group_exit+0x218/0x2d0 kernel/exit.c:1107
 get_signal+0x1259/0x1310 kernel/signal.c:3034
 arch_do_signal_or_restart+0x9c/0x790 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop+0x6e/0x120 kernel/entry/common.c:40
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
 do_syscall_64+0x213/0x540 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fc6a5785e13
RSP: 002b:00007ffea70b82d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: fffffffffffffff4 RBX: 0000000000000000 RCX: 00007fc6a5785e13
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
R10: 00005555720f27d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc6a59b1280 R14: 0000000000000003 R15: 00007ffea70b8470
 </TASK>
INFO: task syz-executor:6331 is blocked on an rw-semaphore, but the owner is not found.
INFO: task syz-executor:6332 blocked for more than 144 seconds.
      Not tainted syzkaller #0
      Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:21464 pid:6332  tgid:6332  ppid:1      task_flags:0x40054c flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5325 [inline]
 __schedule+0x1794/0x4c40 kernel/sched/core.c:6929
 __schedule_loop kernel/sched/core.c:7011 [inline]
 schedule+0x161/0x360 kernel/sched/core.c:7026
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:7083
 rwsem_down_write_slowpath+0x916/0x1090 kernel/locking/rwsem.c:1185
 __down_write_common kernel/locking/rwsem.c:1317 [inline]
 __down_write kernel/locking/rwsem.c:1326 [inline]
 down_write+0x1a7/0x1f0 kernel/locking/rwsem.c:1591
 mmap_write_lock include/linux/mmap_lock.h:312 [inline]
 exit_mmap+0x282/0xb00 mm/mmap.c:1288
 __mmput+0x118/0x430 kernel/fork.c:1133
 exit_mm+0x1d6/0x2b0 kernel/exit.c:582
 do_exit+0x644/0x22f0 kernel/exit.c:954
 do_group_exit+0x218/0x2d0 kernel/exit.c:1107
 get_signal+0x1259/0x1310 kernel/signal.c:3034
 arch_do_signal_or_restart+0x9c/0x790 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop+0x6e/0x120 kernel/entry/common.c:40
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
 do_syscall_64+0x213/0x540 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fa9b0185817
RSP: 002b:00007ffd84bf1d70 EFLAGS: 00000293 ORIG_RAX: 000000000000003d
RAX: fffffffffffffe00 RBX: 0000000000000003 RCX: 00007fa9b0185817
RDX: 0000000040000000 RSI: 00007ffd84bf1ddc RDI: 00000000ffffffff
RBP: 00007ffd84bf1ddc R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 000055557f5c7590 R14: 0000000000025e16 R15: 00007ffd84bf1e30
 </TASK>
INFO: task syz-executor:6332 is blocked on an rw-semaphore, but the owner is not found.
INFO: task syz-executor:6333 blocked for more than 144 seconds.
      Not tainted syzkaller #0
      Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:21592 pid:6333  tgid:6333  ppid:1      task_flags:0x40054c flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5325 [inline]
 __schedule+0x1794/0x4c40 kernel/sched/core.c:6929
 __schedule_loop kernel/sched/core.c:7011 [inline]
 schedule+0x161/0x360 kernel/sched/core.c:7026
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:7083
 rwsem_down_write_slowpath+0x916/0x1090 kernel/locking/rwsem.c:1185
 __down_write_common kernel/locking/rwsem.c:1317 [inline]
 __down_write kernel/locking/rwsem.c:1326 [inline]
 down_write+0x1a7/0x1f0 kernel/locking/rwsem.c:1591
 mmap_write_lock include/linux/mmap_lock.h:312 [inline]
 exit_mmap+0x282/0xb00 mm/mmap.c:1288
 __mmput+0x118/0x430 kernel/fork.c:1133
 exit_mm+0x1d6/0x2b0 kernel/exit.c:582
 do_exit+0x644/0x22f0 kernel/exit.c:954
 do_group_exit+0x218/0x2d0 kernel/exit.c:1107
 get_signal+0x1259/0x1310 kernel/signal.c:3034
 arch_do_signal_or_restart+0x9c/0x790 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop+0x6e/0x120 kernel/entry/common.c:40
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
 do_syscall_64+0x213/0x540 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f0dda785817
RSP: 002b:00007ffc333bc3c0 EFLAGS: 00000293 ORIG_RAX: 000000000000003d
RAX: fffffffffffffe00 RBX: 000000000000001d RCX: 00007f0dda785817
RDX: 0000000040000000 RSI: 00007ffc333bc42c RDI: 00000000ffffffff
RBP: 00007ffc333bc42c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 000000000000000d
R13: 000055556fd86590 R14: 0000000000025e57 R15: 00007ffc333bc480
 </TASK>
INFO: task syz-executor:6333 is blocked on an rw-semaphore, but the owner is not found.
INFO: task syz-executor:6340 blocked for more than 144 seconds.
      Not tainted syzkaller #0
      Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:21464 pid:6340  tgid:6340  ppid:1      task_flags:0x40054c flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5325 [inline]
 __schedule+0x1794/0x4c40 kernel/sched/core.c:6929
 __schedule_loop kernel/sched/core.c:7011 [inline]
 schedule+0x161/0x360 kernel/sched/core.c:7026
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:7083
 rwsem_down_write_slowpath+0x916/0x1090 kernel/locking/rwsem.c:1185
 __down_write_common kernel/locking/rwsem.c:1317 [inline]
 __down_write kernel/locking/rwsem.c:1326 [inline]
 down_write+0x1a7/0x1f0 kernel/locking/rwsem.c:1591
 mmap_write_lock include/linux/mmap_lock.h:312 [inline]
 exit_mmap+0x282/0xb00 mm/mmap.c:1288
 __mmput+0x118/0x430 kernel/fork.c:1133
 exit_mm+0x1d6/0x2b0 kernel/exit.c:582
 do_exit+0x644/0x22f0 kernel/exit.c:954
 do_group_exit+0x218/0x2d0 kernel/exit.c:1107
 get_signal+0x1259/0x1310 kernel/signal.c:3034
 arch_do_signal_or_restart+0x9c/0x790 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop+0x6e/0x120 kernel/entry/common.c:40
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
 do_syscall_64+0x213/0x540 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fcae6985e13
RSP: 002b:00007fff0150d5a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: fffffffffffffff4 RBX: 0000000000000000 RCX: 00007fcae6985e13
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
R10: 0000555591cb37d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcae6bb1280 R14: 0000000000000003 R15: 00007fff0150d740
 </TASK>
INFO: task syz-executor:6340 is blocked on an rw-semaphore, but the owner is not found.
INFO: task syz.3.20:6528 blocked for more than 145 seconds.
      Not tainted syzkaller #0
      Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.20        state:D stack:25896 pid:6528  tgid:6526  ppid:6332   task_flags:0x40054c flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5325 [inline]
 __schedule+0x1794/0x4c40 kernel/sched/core.c:6929
 __schedule_loop kernel/sched/core.c:7011 [inline]
 schedule+0x161/0x360 kernel/sched/core.c:7026
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:7083
 rwsem_down_write_slowpath+0x916/0x1090 kernel/locking/rwsem.c:1185
 __down_write_common kernel/locking/rwsem.c:1317 [inline]
 __down_write kernel/locking/rwsem.c:1326 [inline]
 down_write+0x1a7/0x1f0 kernel/locking/rwsem.c:1591
 mmap_write_lock include/linux/mmap_lock.h:312 [inline]
 exit_mmap+0x282/0xb00 mm/mmap.c:1288
 __mmput+0x118/0x430 kernel/fork.c:1133
 exit_mm+0x1d6/0x2b0 kernel/exit.c:582
 do_exit+0x644/0x22f0 kernel/exit.c:954
 do_group_exit+0x218/0x2d0 kernel/exit.c:1107
 get_signal+0x1259/0x1310 kernel/signal.c:3034
 arch_do_signal_or_restart+0x9c/0x790 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop+0x6e/0x120 kernel/entry/common.c:40
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
 do_syscall_64+0x213/0x540 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fa9b018f6c9
RSP: 002b:00007fa9b10ee0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fa9b03e5fa8 RCX: 00007fa9b018f6c9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fa9b03e5fa8
RBP: 00007fa9b03e5fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa9b03e6038 R14: 00007ffd84bf1930 R15: 00007ffd84bf1a18
 </TASK>
INFO: task syz.3.20:6528 is blocked on an rw-semaphore, but the owner is not found.
INFO: task syz.2.34:6529 blocked for more than 145 seconds.
      Not tainted syzkaller #0
      Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.34        state:D stack:25896 pid:6529  tgid:6527  ppid:6333   task_flags:0x40054c flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5325 [inline]
 __schedule+0x1794/0x4c40 kernel/sched/core.c:6929
 __schedule_loop kernel/sched/core.c:7011 [inline]
 schedule+0x161/0x360 kernel/sched/core.c:7026
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:7083
 rwsem_down_write_slowpath+0x916/0x1090 kernel/locking/rwsem.c:1185
 __down_write_common kernel/locking/rwsem.c:1317 [inline]
 __down_write kernel/locking/rwsem.c:1326 [inline]
 down_write+0x1a7/0x1f0 kernel/locking/rwsem.c:1591
 mmap_write_lock include/linux/mmap_lock.h:312 [inline]
 exit_mmap+0x282/0xb00 mm/mmap.c:1288
 __mmput+0x118/0x430 kernel/fork.c:1133
 exit_mm+0x1d6/0x2b0 kernel/exit.c:582
 do_exit+0x644/0x22f0 kernel/exit.c:954
 do_group_exit+0x218/0x2d0 kernel/exit.c:1107
 get_signal+0x1259/0x1310 kernel/signal.c:3034
 arch_do_signal_or_restart+0x9c/0x790 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop+0x6e/0x120 kernel/entry/common.c:40
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
 do_syscall_64+0x213/0x540 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f0dda78f6c9
RSP: 002b:00007f0ddb65d0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f0dda9e5fa8 RCX: 00007f0dda78f6c9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f0dda9e5fa8
RBP: 00007f0dda9e5fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0dda9e6038 R14: 00007ffc333bbf80 R15: 00007ffc333bc068
 </TASK>
INFO: task syz.2.34:6529 is blocked on an rw-semaphore, but the owner is not found.

Showing all locks held in the system:
1 lock held by khungtaskd/31:
 #0: ffffffff8db3ac20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 #0: ffffffff8db3ac20 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline]
 #0: ffffffff8db3ac20 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2a/0x180 kernel/locking/lockdep.c:6775
2 locks held by udevd/5170:
 #0: ffffffff8dbf36f0 (dup_mmap_sem){.+.+}-{0:0}, at: dup_mm kernel/fork.c:1488 [inline]
 #0: ffffffff8dbf36f0 (dup_mmap_sem){.+.+}-{0:0}, at: copy_mm+0x131/0x4b0 kernel/fork.c:1541
 #1: ffff88807e4b9760 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:330 [inline]
 #1: ffff88807e4b9760 (&mm->mmap_lock){++++}-{4:4}, at: dup_mmap+0x122/0x1af0 mm/mmap.c:1727
2 locks held by getty/5558:
 #0: ffff8880227180a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43a/0x1400 drivers/tty/n_tty.c:2222
1 lock held by syz-execprog/6212:
 #0: ffff88807f1357e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:330 [inline]
 #0: ffff88807f1357e0 (&mm->mmap_lock){++++}-{4:4}, at: vm_mmap_pgoff+0x20d/0x4c0 mm/util.c:579
1 lock held by syz-executor/6219:
 #0: ffff88807bf7ed60 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:330 [inline]
 #0: ffff88807bf7ed60 (&mm->mmap_lock){++++}-{4:4}, at: vm_mmap_pgoff+0x20d/0x4c0 mm/util.c:579
1 lock held by syz-executor/6326:
 #0: ffff88807e9c81e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:312 [inline]
 #0: ffff88807e9c81e0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x282/0xb00 mm/mmap.c:1288
1 lock held by syz-executor/6331:
 #0: ffff88802e2a2ce0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:312 [inline]
 #0: ffff88802e2a2ce0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x282/0xb00 mm/mmap.c:1288
1 lock held by syz-executor/6332:
 #0: ffff88807e9ccd20 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:312 [inline]
 #0: ffff88807e9ccd20 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x282/0xb00 mm/mmap.c:1288
1 lock held by syz-executor/6333:
 #0: ffff88807e9ce2a0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:312 [inline]
 #0: ffff88807e9ce2a0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x282/0xb00 mm/mmap.c:1288
1 lock held by syz-executor/6340:
 #0: ffff88807e9cd7e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:312 [inline]
 #0: ffff88807e9cd7e0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x282/0xb00 mm/mmap.c:1288
1 lock held by syz.3.20/6528:
 #0: ffff8880265e01e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:312 [inline]
 #0: ffff8880265e01e0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x282/0xb00 mm/mmap.c:1288
1 lock held by syz.2.34/6529:
 #0: ffff88807b8162a0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:312 [inline]
 #0: ffff88807b8162a0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x282/0xb00 mm/mmap.c:1288
1 lock held by dhcpcd-run-hook/6530:
 #0: ffff8880791c6d60 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:330 [inline]
 #0: ffff8880791c6d60 (&mm->mmap_lock){++++}-{4:4}, at: setup_arg_pages+0x2a7/0xa70 fs/exec.c:650
1 lock held by syz-executor/6536:
 #0: ffff8880604d0ca0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:312 [inline]
 #0: ffff8880604d0ca0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x282/0xb00 mm/mmap.c:1288
2 locks held by syz-executor/6548:
 #0: ffffffff8dbf36f0 (dup_mmap_sem){.+.+}-{0:0}, at: dup_mm kernel/fork.c:1488 [inline]
 #0: ffffffff8dbf36f0 (dup_mmap_sem){.+.+}-{0:0}, at: copy_mm+0x131/0x4b0 kernel/fork.c:1541
 #1: ffff888028b6b7a0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:330 [inline]
 #1: ffff888028b6b7a0 (&mm->mmap_lock){++++}-{4:4}, at: dup_mmap+0x122/0x1af0 mm/mmap.c:1727
2 locks held by syz-executor/6552:
 #0: ffffffff8dbf36f0 (dup_mmap_sem){.+.+}-{0:0}, at: dup_mm kernel/fork.c:1488 [inline]
 #0: ffffffff8dbf36f0 (dup_mmap_sem){.+.+}-{0:0}, at: copy_mm+0x131/0x4b0 kernel/fork.c:1541
 #1: ffff888028b6ed60 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:330 [inline]
 #1: ffff888028b6ed60 (&mm->mmap_lock){++++}-{4:4}, at: dup_mmap+0x122/0x1af0 mm/mmap.c:1727
1 lock held by syz.7.49/6692:
 #0: ffff88801ab34d20 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:312 [inline]
 #0: ffff88801ab34d20 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x282/0xb00 mm/mmap.c:1288
1 lock held by syz.5.35/6698:
 #0: ffff88807e4b8ca0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:312 [inline]
 #0: ffff88807e4b8ca0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x282/0xb00 mm/mmap.c:1288

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x185/0x250 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x39a/0x3d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x176/0x2e0 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:332 [inline]
 watchdog+0x16f3/0x1740 kernel/hung_task.c:495
 kthread+0x70d/0x890 kernel/kthread.c:463
 ret_from_fork+0x4b4/0x840 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 6222 Comm: syz-execprog Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:kasan_check_range+0x1d1/0x2b0 mm/kasan/generic.c:200
Code: e4 49 0f 49 dc 48 83 e3 f8 49 29 dc 74 12 41 80 3b 00 0f 85 b8 00 00 00 49 ff c3 49 ff cc 75 ee 5b 41 5c 41 5d 41 5e 41 5f 5d <e9> 8a f5 f2 08 cc 45 84 ff 75 63 41 f7 c7 00 ff 00 00 75 5f 41 f7
RSP: 0018:ffffc90003457918 EFLAGS: 00000297
RAX: 00000000ffffff01 RBX: ffff88802774e1c8 RCX: ffffffff819d48cd
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc90003457960
RBP: ffffc900034579d8 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff5200068af2c R12: ffff88802774e1d8
R13: ffff88802774e1d0 R14: 1ffff11004ee9c3b R15: 1ffff11004ee9c3a
FS:  000000c003872098(0000) GS:ffff888126778000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd391c3fffc CR3: 0000000026520000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
 atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1301 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:111 [inline]
 do_raw_spin_lock+0x11d/0x2c0 kernel/locking/spinlock_debug.c:116
 spin_lock include/linux/spinlock.h:351 [inline]
 futex_unqueue+0xf2/0x230 kernel/futex/core.c:938
 __futex_wait+0x21f/0x3d0 kernel/futex/waitwake.c:690
 futex_wait+0x100/0x350 kernel/futex/waitwake.c:715
 do_futex+0x32f/0x410 kernel/futex/syscalls.c:130
 __do_sys_futex kernel/futex/syscalls.c:207 [inline]
 __se_sys_futex+0x36b/0x3f0 kernel/futex/syscalls.c:188
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x86/0x540 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x4800c3
Code: 24 20 c3 cc cc cc cc 48 8b 7c 24 08 8b 74 24 10 8b 54 24 14 4c 8b 54 24 18 4c 8b 44 24 20 44 8b 4c 24 28 b8 ca 00 00 00 0f 05 <89> 44 24 30 c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc
RSP: 002b:000000c0000ede40 EFLAGS: 00000206 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004800c3
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 0000000003260610
RBP: 000000c0000ede88 R08: 0000000000000000 R09: 0000000000000000
R10: 000000c0000ede78 R11: 0000000000000206 R12: 000000c0000ede78
R13: 0000000000000001 R14: 000000c00253d340 R15: 0000000000000001
 </TASK>