INFO: task syz-executor:7153 blocked for more than 143 seconds.
      Not tainted 6.13.0-rc1-next-20241205-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:19992 pid:7153  tgid:7153  ppid:1      flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5371 [inline]
 __schedule+0x189f/0x4c80 kernel/sched/core.c:6758
 __schedule_loop kernel/sched/core.c:6835 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6850
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6907
 rwsem_down_write_slowpath+0xeee/0x13b0 kernel/locking/rwsem.c:1176
 __down_write_common kernel/locking/rwsem.c:1304 [inline]
 __down_write kernel/locking/rwsem.c:1313 [inline]
 down_write+0x1d7/0x220 kernel/locking/rwsem.c:1578
 inode_lock include/linux/fs.h:830 [inline]
 vfs_unlink+0xe4/0x650 fs/namei.c:4512
 do_unlinkat+0x4ae/0x830 fs/namei.c:4587
 __do_sys_unlink fs/namei.c:4635 [inline]
 __se_sys_unlink fs/namei.c:4633 [inline]
 __x64_sys_unlink+0x47/0x50 fs/namei.c:4633
 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: 0033:0x7f5ca197f4c7
RSP: 002b:00007ffcfcae0e18 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5ca197f4c7
RDX: 00007ffcfcae0e40 RSI: 00007ffcfcae0ed0 RDI: 00007ffcfcae0ed0
RBP: 00007ffcfcae0ed0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000206 R12: 00007ffcfcae1fc0
R13: 00007f5ca19f3ab4 R14: 0000000000036b77 R15: 00007ffcfcae3080
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/30:
 #0: ffffffff8e9374a0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #0: ffffffff8e9374a0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #0: ffffffff8e9374a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6744
2 locks held by getty/5590:
 #0: ffff88814d44b0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc90002fde2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
3 locks held by syz-executor/7153:
 #0: ffff888062890420 (sb_writers#35){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
 #1: ffff88807c968148 (&sb->s_type->i_mutex_key#35/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:865 [inline]
 #1: ffff88807c968148 (&sb->s_type->i_mutex_key#35/1){+.+.}-{4:4}, at: do_unlinkat+0x26a/0x830 fs/namei.c:4574
 #2: ffff88807c9697f8 (&sb->s_type->i_mutex_key#35){++++}-{4:4}, at: inode_lock include/linux/fs.h:830 [inline]
 #2: ffff88807c9697f8 (&sb->s_type->i_mutex_key#35){++++}-{4:4}, at: vfs_unlink+0xe4/0x650 fs/namei.c:4512
4 locks held by bch-reclaim/loo/8476:
 #0: ffff888069a4b028 (&j->reclaim_lock){+.+.}-{4:4}, at: bch2_journal_reclaim_thread+0x16d/0x570 fs/bcachefs/journal_reclaim.c:747
 #1: ffff888069a04378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:158 [inline]
 #1: ffff888069a04378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:249 [inline]
 #1: ffff888069a04378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: __bch2_trans_get+0x7e4/0xd30 fs/bcachefs/btree_iter.c:3354
 #2: ffff888069a04720 (&wb->flushing.lock){+.+.}-{4:4}, at: btree_write_buffer_flush_seq+0x1c3f/0x1e10 fs/bcachefs/btree_write_buffer.c:548
 #3: ffff888069a266d0 (&c->gc_lock){.+.+}-{4:4}, at: bch2_btree_update_start+0x682/0x14e0 fs/bcachefs/btree_update_interior.c:1191
4 locks held by syz.8.395/8488:
 #0: ffff88807c9697f8 (&sb->s_type->i_mutex_key#35){++++}-{4:4}, at: inode_lock include/linux/fs.h:830 [inline]
 #0: ffff88807c9697f8 (&sb->s_type->i_mutex_key#35){++++}-{4:4}, at: do_truncate+0x20c/0x310 fs/open.c:63
 #1: ffff888069a00a50 (&c->snapshot_create_lock){.+.+}-{4:4}, at: bch2_truncate+0x166/0x2d0 fs/bcachefs/io_misc.c:294
 #2: ffff888069a04378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:158 [inline]
 #2: ffff888069a04378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:249 [inline]
 #2: ffff888069a04378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: __bch2_trans_get+0x7e4/0xd30 fs/bcachefs/btree_iter.c:3354
 #3: ffff888069a266d0 (&c->gc_lock){.+.+}-{4:4}, at: bch2_btree_update_start+0x682/0x14e0 fs/bcachefs/btree_update_interior.c:1191
3 locks held by dhcpcd-run-hook/11481:
 #0: ffff8880b863e998 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598
 #1: ffff8880b8628948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x41d/0x7a0 kernel/sched/psi.c:987
 #2: ffff88802c906578 (&sig->wait_chldexit){....}-{3:3}, at: __wake_up_common_lock+0x25/0x1e0 kernel/sched/wait.c:105

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc1-next-20241205-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
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:234 [inline]
 watchdog+0xff6/0x1040 kernel/hung_task.c:397
 kthread+0x2f0/0x390 kernel/kthread.c:389
 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 UID: 0 PID: 11485 Comm: sed Not tainted 6.13.0-rc1-next-20241205-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:set_next_entity+0x22e/0x4c0 kernel/sched/fair.c:5586
Code: 08 48 89 df e8 83 a0 94 00 48 8b 2b 49 8d 5c 24 58 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 55 a1 94 00 48 89 2b <49> 83 c5 58 4c 89 e8 48 c1 e8 03 42 80 3c 30 00 74 08 4c 89 ef e8
RSP: 0018:ffffc900056374f0 EFLAGS: 00000046
RAX: 1ffff1100907279b RBX: ffff888048393cd8 RCX: 0000000000000800
RDX: 0000000000000800 RSI: ffffffff8c0aa440 RDI: ffffffff8c5fbe80
RBP: 0000005511eb5550 R08: ffffffff9019d9b7 R09: 1ffffffff2033b36
R10: dffffc0000000000 R11: fffffbfff2033b37 R12: ffff888048393c80
R13: ffff8880b863ea40 R14: dffffc0000000000 R15: 1ffff110170c7d77
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffef3cf6dfc CR3: 0000000071586000 CR4: 00000000003526f0
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 pick_next_task_fair+0x7d4/0xc90 kernel/sched/fair.c:8920
 __pick_next_task+0xdd/0x400 kernel/sched/core.c:6025
 __schedule+0x776/0x4c80 kernel/sched/core.c:6711
 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7080
 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:210
Code: 89 fb e8 23 00 00 00 48 8b 3d 84 66 8f 0c 48 89 de 5b e9 83 e3 5a 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 04 24 65 48 8b 0c 25 c0 d6 03 00 65 8b 15 90 7a
RSP: 0018:ffffc90005637970 EFLAGS: 00000297
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffff8880256a3c00
RDX: ffff8880256a3c00 RSI: 000000000000004b RDI: 000000000000005e
RBP: 000000000000004b R08: ffffffff84795f09 R09: 00000000ffffffff
R10: dffffc0000000000 R11: fffffbfff2033b37 R12: ffff88802fe7e882
R13: 000000000000006c R14: ffff88802fe7e881 R15: 0000000000000001
 tomoyo_encode2 security/tomoyo/realpath.c:57 [inline]
 tomoyo_encode+0x348/0x540 security/tomoyo/realpath.c:80
 tomoyo_realpath_from_path+0x59e/0x5e0 security/tomoyo/realpath.c:283
 tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
 tomoyo_path_perm+0x2b7/0x740 security/tomoyo/file.c:822
 security_inode_getattr+0x130/0x330 security/security.c:2371
 vfs_getattr+0x2a/0x3a0 fs/stat.c:243
 vfs_fstat fs/stat.c:265 [inline]
 vfs_fstatat+0xa8/0x130 fs/stat.c:364
 __do_sys_newfstatat fs/stat.c:530 [inline]
 __se_sys_newfstatat fs/stat.c:524 [inline]
 __x64_sys_newfstatat+0x11d/0x1a0 fs/stat.c:524
 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: 0033:0x7fccd6f3c8a9
Code: 49 01 00 09 00 00 00 83 c8 ff c3 48 89 f2 b9 00 01 00 00 48 89 fe bf 9c ff ff ff e9 00 00 00 00 41 89 ca b8 06 01 00 00 0f 05 <45> 31 c0 3d 00 f0 ff ff 76 0c f7 d8 41 83 c8 ff 89 05 a1 49 01 00
RSP: 002b:00007ffef3cf6708 EFLAGS: 00000206 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fccd6f3c8a9
RDX: 00007ffef3cf67b0 RSI: 00007fccd6f473d4 RDI: 0000000000000003
RBP: 00007ffef3cf6870 R08: 00007fccd6f190a0 R09: 00007fccd6f512a0
R10: 0000000000001000 R11: 0000000000000206 R12: 00007fccd6f512a0
R13: 00007ffef3cf68f8 R14: 00007fccd6f512a0 R15: 0000000000000001
 </TASK>