INFO: task syz-executor.0:5537 blocked for more than 143 seconds. Not tainted 6.2.0-rc1-syzkaller-dirty #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:21272 pid:5537 ppid:1 flags:0x00004004 Call Trace: __schedule+0x13ca/0x43c0 schedule+0xc3/0x190 schedule_timeout+0x1ae/0x300 gfs2_gl_hash_clear+0x192/0x300 gfs2_put_super+0x827/0x890 generic_shutdown_super+0x134/0x310 kill_block_super+0x7e/0xe0 deactivate_locked_super+0xa4/0x110 cleanup_mnt+0x490/0x520 task_work_run+0x24a/0x300 exit_to_user_mode_loop+0xd1/0xf0 exit_to_user_mode_prepare+0xb1/0x140 syscall_exit_to_user_mode+0x54/0x2d0 do_syscall_64+0x4d/0xc0 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7efe9328d517 RSP: 002b:00007ffccd9359f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007efe9328d517 RDX: 00007ffccd935ac9 RSI: 000000000000000a RDI: 00007ffccd935ac0 RBP: 00007ffccd935ac0 R08: 00000000ffffffff R09: 00007ffccd935890 R10: 00005555568328b3 R11: 0000000000000246 R12: 00007efe932e6b24 R13: 00007ffccd936b80 R14: 0000555556832810 R15: 00007ffccd936bc0 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffffffff8cd26dd0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xce0 1 lock held by rcu_tasks_trace/13: #0: ffffffff8cd275d0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xce0 1 lock held by khungtaskd/28: #0: ffffffff8cd26c00 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 2 locks held by getty/4752: #0: ffff88802847e098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 #1: ffffc900015802f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x53b/0x1630 1 lock held by syz-executor.0/5537: #0: ffff888024f8a0e0 (&type->s_umount_key#50){+.+.}-{3:3}, at: deactivate_super+0xad/0xf0 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc1-syzkaller-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 Call Trace: dump_stack_lvl+0x1b5/0x2a0 nmi_cpu_backtrace+0x47b/0x500 nmi_trigger_cpumask_backtrace+0x1d3/0x430 watchdog+0xf70/0xfb0 kthread+0x270/0x300 ret_from_fork+0x1f/0x30 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 75 Comm: kworker/u4:4 Not tainted 6.2.0-rc1-syzkaller-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:kasan_check_range+0x15/0x290 Code: ea ff ff ff c3 0f 0b b8 ea ff ff ff c3 0f 1f 84 00 00 00 00 00 66 0f 1f 00 55 41 57 41 56 53 b0 01 48 85 f6 0f 84 9a 01 00 00 <48> 89 fd 48 01 f5 0f 82 5a 02 00 00 48 89 fd 48 c1 ed 2f 81 fd ff RSP: 0018:ffffc900015d7808 EFLAGS: 00000002 RAX: ffff888018bd0001 RBX: ffffffff8132a509 RCX: ffffffff8132a509 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffffff8f9efcca RBP: ffffc900015d7a10 R08: dffffc0000000000 R09: ffffed100240d0e1 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001 R13: dffffc0000000000 R14: ffffffff8f9efcca R15: 00002aaaaaaab924 FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000557b7a63d600 CR3: 0000000012063000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: memcpy+0x29/0x70 text_poke_memcpy+0x9/0x10 __text_poke+0x574/0x8e0 text_poke_bp_batch+0x650/0x850 text_poke_finish+0x1a/0x30 arch_jump_label_transform_apply+0x17/0x30 static_key_disable_cpuslocked+0xce/0x1b0 static_key_disable+0x1a/0x20 toggle_allocation_gate+0x1a9/0x240 process_one_work+0x96c/0x13e0 worker_thread+0xa63/0x1210 kthread+0x270/0x300 ret_from_fork+0x1f/0x30