INFO: task syz-executor.4:9470 blocked for more than 143 seconds.
      Not tainted 6.9.0-rc6-syzkaller-00053-g0106679839f7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D stack:25744 pid:9470  tgid:9463  ppid:8665   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5409 [inline]
 __schedule+0x1796/0x4a00 kernel/sched/core.c:6746
 __schedule_loop kernel/sched/core.c:6823 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6838
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6895
 rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
 __down_write_common+0x1af/0x200 kernel/locking/rwsem.c:1306
 inode_lock_nested include/linux/fs.h:830 [inline]
 lock_rename fs/namei.c:3066 [inline]
 do_renameat2+0x62c/0x13f0 fs/namei.c:4972
 __do_sys_rename fs/namei.c:5084 [inline]
 __se_sys_rename fs/namei.c:5082 [inline]
 __x64_sys_rename+0x86/0xa0 fs/namei.c:5082
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7e79c7dea9
RSP: 002b:00007f7e7a9b40c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007f7e79dac120 RCX: 00007f7e79c7dea9
RDX: 0000000000000000 RSI: 0000000020000540 RDI: 0000000020000080
RBP: 00007f7e79cca4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f7e79dac120 R15: 00007ffff2441a18
 </TASK>
INFO: task syz-executor.4:9471 blocked for more than 144 seconds.
      Not tainted 6.9.0-rc6-syzkaller-00053-g0106679839f7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D stack:27800 pid:9471  tgid:9463  ppid:8665   flags:0x00000006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5409 [inline]
 __schedule+0x1796/0x4a00 kernel/sched/core.c:6746
 __schedule_loop kernel/sched/core.c:6823 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6838
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6895
 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
 inode_lock_shared include/linux/fs.h:805 [inline]
 open_last_lookups fs/namei.c:3565 [inline]
 path_openat+0x7c4/0x3240 fs/namei.c:3796
 do_filp_open+0x235/0x490 fs/namei.c:3826
 do_open_execat+0x165/0x470 fs/exec.c:930
 alloc_bprm+0x28/0xa00 fs/exec.c:1541
 do_execveat_common+0x1b3/0x700 fs/exec.c:1930
 do_execve fs/exec.c:2053 [inline]
 __do_sys_execve fs/exec.c:2129 [inline]
 __se_sys_execve fs/exec.c:2124 [inline]
 __x64_sys_execve+0x92/0xb0 fs/exec.c:2124
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7e79c7dea9
RSP: 002b:00007f7e7a9930c8 EFLAGS: 00000246 ORIG_RAX: 000000000000003b
RAX: ffffffffffffffda RBX: 00007f7e79dac1f0 RCX: 00007f7e79c7dea9
RDX: 0000000020000780 RSI: 0000000000000000 RDI: 0000000020000280
RBP: 00007f7e79cca4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f7e79dac1f0 R15: 00007ffff2441a18
 </TASK>
INFO: task syz-executor.4:9478 blocked for more than 145 seconds.
      Not tainted 6.9.0-rc6-syzkaller-00053-g0106679839f7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D stack:23696 pid:9478  tgid:9463  ppid:8665   flags:0x00000006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5409 [inline]
 __schedule+0x1796/0x4a00 kernel/sched/core.c:6746
 __schedule_loop kernel/sched/core.c:6823 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6838
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6895
 rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
 __down_write_common+0x1af/0x200 kernel/locking/rwsem.c:1306
 inode_lock include/linux/fs.h:795 [inline]
 open_last_lookups fs/namei.c:3563 [inline]
 path_openat+0x7d3/0x3240 fs/namei.c:3796
 do_filp_open+0x235/0x490 fs/namei.c:3826
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1406
 do_sys_open fs/open.c:1421 [inline]
 __do_sys_openat fs/open.c:1437 [inline]
 __se_sys_openat fs/open.c:1432 [inline]
 __x64_sys_openat+0x247/0x2a0 fs/open.c:1432
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7e79c7dea9
RSP: 002b:00007f7e7a9510c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f7e79dac390 RCX: 00007f7e79c7dea9
RDX: 000000000000275a RSI: 0000000020000240 RDI: ffffffffffffff9c
RBP: 00007f7e79cca4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f7e79dac390 R15: 00007ffff2441a18
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/29:
 #0: ffffffff8e334d60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
 #0: ffffffff8e334d60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
 #0: ffffffff8e334d60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by getty/4827:
 #0: ffff88802b1030a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
2 locks held by kworker/u8:15/8023:
2 locks held by kworker/1:8/9172:
3 locks held by syz-executor.4/9465:
2 locks held by syz-executor.4/9470:
 #0: ffff888020ad8420 (sb_writers#31){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
 #1: ffff888076b74188 (&type->i_mutex_dir_key#21/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:830 [inline]
 #1: ffff888076b74188 (&type->i_mutex_dir_key#21/1){+.+.}-{3:3}, at: lock_rename fs/namei.c:3066 [inline]
 #1: ffff888076b74188 (&type->i_mutex_dir_key#21/1){+.+.}-{3:3}, at: do_renameat2+0x62c/0x13f0 fs/namei.c:4972
1 lock held by syz-executor.4/9471:
 #0: ffff888076b74188 (&type->i_mutex_dir_key#21){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:805 [inline]
 #0: ffff888076b74188 (&type->i_mutex_dir_key#21){++++}-{3:3}, at: open_last_lookups fs/namei.c:3565 [inline]
 #0: ffff888076b74188 (&type->i_mutex_dir_key#21){++++}-{3:3}, at: path_openat+0x7c4/0x3240 fs/namei.c:3796
2 locks held by syz-executor.4/9478:
 #0: ffff888020ad8420 (sb_writers#31){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
 #1: ffff888076b74188 (&type->i_mutex_dir_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline]
 #1: ffff888076b74188 (&type->i_mutex_dir_key#21){++++}-{3:3}, at: open_last_lookups fs/namei.c:3563 [inline]
 #1: ffff888076b74188 (&type->i_mutex_dir_key#21){++++}-{3:3}, at: path_openat+0x7d3/0x3240 fs/namei.c:3796
2 locks held by syz-executor.2/10408:
 #0: ffff888075cf20e0 (&type->s_umount_key#69){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff888075cf20e0 (&type->s_umount_key#69){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff888075cf20e0 (&type->s_umount_key#69){+.+.}-{3:3}, at: deactivate_super+0xb5/0xf0 fs/super.c:504
 #1: ffffffff8e33a0f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:291 [inline]
 #1: ffffffff8e33a0f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x39a/0x820 kernel/rcu/tree_exp.h:939
1 lock held by syz-executor.1/11573:
1 lock held by syz-executor.0/11632:
 #0: ffff888030b16210 (&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline]
 #0: ffff888030b16210 (&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: __sock_release net/socket.c:658 [inline]
 #0: ffff888030b16210 (&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: sock_close+0x90/0x240 net/socket.c:1421
2 locks held by syz-executor.0/11638:
 #0: ffffffff8f594488 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
 #0: ffffffff8f594488 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6592
 #1: ffffffff8e33a0f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline]
 #1: ffffffff8e33a0f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x463/0x820 kernel/rcu/tree_exp.h:939
1 lock held by syz-executor.4/11640:
 #0: ffffffff8f594488 (rtnl_mutex){+.+.}-{3:3}, at: __tun_chr_ioctl+0x48f/0x2400 drivers/net/tun.c:3110
1 lock held by syz-executor.4/11641:
 #0: ffffffff8f594488 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x2ce/0x1bc0 net/ipv4/devinet.c:1096
1 lock held by syz-executor.4/11643:
 #0: ffffffff8f594488 (rtnl_mutex){+.+.}-{3:3}, at: __tun_chr_ioctl+0x48f/0x2400 drivers/net/tun.c:3110

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

NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.9.0-rc6-syzkaller-00053-g0106679839f7 #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+0x241/0x360 lib/dump_stack.c:114
 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:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
 watchdog+0xfde/0x1020 kernel/hung_task.c:380
 kthread+0x2f0/0x390 kernel/kthread.c:388
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 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 PID: 11573 Comm: syz-executor.1 Not tainted 6.9.0-rc6-syzkaller-00053-g0106679839f7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:lock_is_held_type+0x11f/0x190 kernel/locking/lockdep.c:5827
Code: 48 c7 c7 20 ca ca 8b e8 cf 1a 00 00 b8 ff ff ff ff 65 0f c1 05 a2 f8 8a 74 83 f8 01 75 44 48 c7 04 24 00 00 00 00 9c 8f 04 24 <f7> 04 24 00 02 00 00 75 4c 41 f7 c4 00 02 00 00 74 01 fb 65 48 8b
RSP: 0018:ffffc90009cbf798 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffff88807c879e00
RDX: 0000000000000000 RSI: ffffffff8bcaca20 RDI: ffffffff8c1eaaa0
RBP: ffffc90009cbf8f8 R08: ffffffff81e0f4b1 R09: 0000000000000000
R10: ffffc90009cbf9c0 R11: fffff52001397f3f R12: 0000000000000246
R13: ffff88807c879e00 R14: 00000000ffffffff R15: ffffffff8e334dc0
FS:  00007fd9aa0096c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020db5030 CR3: 0000000062af6000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 lock_is_held include/linux/lockdep.h:231 [inline]
 __might_resched+0xa5/0x780 kernel/sched/core.c:10159
 __might_fault+0x72/0x120 mm/memory.c:6217
 _copy_from_user+0x2a/0xe0 lib/usercopy.c:14
 copy_from_user include/linux/uaccess.h:183 [inline]
 copy_msghdr_from_user+0xae/0x680 net/socket.c:2514
 recvmsg_copy_msghdr net/socket.c:2769 [inline]
 ___sys_recvmsg net/socket.c:2841 [inline]
 do_recvmmsg+0x40f/0xae0 net/socket.c:2939
 __sys_recvmmsg net/socket.c:3018 [inline]
 __do_sys_recvmmsg net/socket.c:3041 [inline]
 __se_sys_recvmmsg net/socket.c:3034 [inline]
 __x64_sys_recvmmsg+0x199/0x250 net/socket.c:3034
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd9a927dea9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd9aa0090c8 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007fd9a93abf80 RCX: 00007fd9a927dea9
RDX: 03ffffffffffff62 RSI: 00000000200005c0 RDI: 0000000000000004
RBP: 00007fd9a92ca4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fd9a93abf80 R15: 00007fff82856d78
 </TASK>