INFO: task syz-executor.4:14502 blocked for more than 143 seconds.
      Not tainted 6.7.0-syzkaller-02320-gacc657692aed #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D stack:26000 pid:14502 tgid:14502 ppid:5093   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5399 [inline]
 __schedule+0x177f/0x4960 kernel/sched/core.c:6726
 __schedule_loop kernel/sched/core.c:6801 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6816
 coredump_task_exit kernel/exit.c:437 [inline]
 do_exit+0x576/0x2740 kernel/exit.c:823
 do_group_exit+0x206/0x2c0 kernel/exit.c:1018
 get_signal+0x1769/0x1840 kernel/signal.c:2893
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:309
 exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
 syscall_exit_to_user_mode+0xc8/0x370 kernel/entry/common.c:212
 do_syscall_64+0x102/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f796be7cd29
RSP: 002b:00007fff9e5d4618 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffdfc RBX: 000000000006939f RCX: 00007f796be7cd29
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f796bfac05c
RBP: 0000000000000032 R08: 00007f796bfac05c R09: 00007f796bfac05c
R10: 00007fff9e5d4750 R11: 0000000000000246 R12: 00007f796bfac05c
R13: 00000000000693d1 R14: 00007fff9e5d4770 R15: 00007fff9e5d4750
 </TASK>
INFO: task syz-executor.4:14519 blocked for more than 144 seconds.
      Not tainted 6.7.0-syzkaller-02320-gacc657692aed #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D stack:26896 pid:14519 tgid:14502 ppid:5093   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5399 [inline]
 __schedule+0x177f/0x4960 kernel/sched/core.c:6726
 __schedule_loop kernel/sched/core.c:6801 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6816
 schedule_timeout+0xb0/0x300 kernel/time/timer.c:2159
 do_wait_for_common kernel/sched/completion.c:95 [inline]
 __wait_for_common+0x3e5/0x6d0 kernel/sched/completion.c:116
 wait_for_common kernel/sched/completion.c:127 [inline]
 wait_for_completion_state+0x1c/0x40 kernel/sched/completion.c:264
 coredump_wait fs/coredump.c:414 [inline]
 do_coredump+0xa99/0x2b50 fs/coredump.c:571
 get_signal+0x146a/0x1840 kernel/signal.c:2879
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:309
 exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
 syscall_exit_to_user_mode+0xc8/0x370 kernel/entry/common.c:212
 do_syscall_64+0x102/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f796be7cd29
RSP: 002b:00007f796cba00c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffe5 RBX: 00007f796bfac050 RCX: 00007f796be7cd29
RDX: 0000000000000001 RSI: 0000000020000240 RDI: 0000000000000008
RBP: 00007f796bec947a R08: 0000000000000000 R09: 0000000000000000
R10: 0604000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f796bfac050 R15: 00007fff9e5d4538
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.7.0-syzkaller-02320-gacc657692aed #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x198/0x310 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
 watchdog+0xfaf/0xff0 kernel/hung_task.c:379
 kthread+0x2d3/0x370 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4491 Comm: syslogd Not tainted 6.7.0-syzkaller-02320-gacc657692aed #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:check_preemption_disabled+0x14/0x110 lib/smp_processor_id.c:13
Code: 8b 48 c7 c6 20 2f be 8b eb 0c 66 2e 0f 1f 84 00 00 00 00 00 66 90 41 57 41 56 41 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 <48> 89 44 24 08 65 8b 1d 8c 91 e6 74 65 8b 05 81 91 e6 74 a9 ff ff
RSP: 0018:ffffc9000314f6c8 EFLAGS: 00000082
RAX: 7c6459808e4b4000 RBX: 0000000000000001 RCX: ffffffff8195aaec
RDX: 0000000000000000 RSI: ffffffff8bbe2f20 RDI: ffffffff8bbe2ee0
RBP: ffffc9000314f7d0 R08: ffffffff8f016aef R09: 1ffffffff1e02d5d
R10: dffffc0000000000 R11: fffffbfff1e02d5e R12: dffffc0000000000
R13: 1ffff92000629ee8 R14: ffffc9000314f760 R15: 0000000000000246
FS:  00007f2e43766380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5827dad988 CR3: 000000002e5da000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline]
 rcu_is_watching+0x15/0xb0 kernel/rcu/tree.c:700
 trace_irq_enable+0x3b/0xf0 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x18/0x40 kernel/trace/trace_preemptirq.c:56
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
 _raw_spin_unlock_irqrestore+0x8f/0x140 kernel/locking/spinlock.c:194
 __debug_check_no_obj_freed lib/debugobjects.c:998 [inline]
 debug_check_no_obj_freed+0x557/0x580 lib/debugobjects.c:1019
 slab_free_hook mm/slub.c:2093 [inline]
 slab_free mm/slub.c:4299 [inline]
 kmem_cache_free+0xcc/0x2a0 mm/slub.c:4363
 __unix_dgram_recvmsg+0xcbc/0x12c0 net/unix/af_unix.c:2468
 sock_recvmsg_nosec net/socket.c:1046 [inline]
 sock_recvmsg net/socket.c:1068 [inline]
 sock_read_iter+0x3ab/0x500 net/socket.c:1138
 call_read_iter include/linux/fs.h:2079 [inline]
 new_sync_read fs/read_write.c:395 [inline]
 vfs_read+0x662/0x900 fs/read_write.c:476
 ksys_read+0x1a0/0x2c0 fs/read_write.c:619
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f2e438bab6a
Code: 00 3d 00 00 41 00 75 0d 50 48 8d 3d 2d 08 0a 00 e8 ea 7d 01 00 31 c0 e9 07 ff ff ff 64 8b 04 25 18 00 00 00 85 c0 75 1b 0f 05 <48> 3d 00 f0 ff ff 76 6c 48 8b 15 8f a2 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffd087eccc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f2e438bab6a
RDX: 00000000000000ff RSI: 00005605f8e91950 RDI: 0000000000000000
RBP: 00005605f8e91910 R08: 0000000000000001 R09: 0000000000000000
R10: 00007f2e43a593a3 R11: 0000000000000246 R12: 00005605f8e919db
R13: 00005605f8e91950 R14: 0000000000000000 R15: 00007f2e43a97a80
 </TASK>