INFO: task syz.3.93:6843 blocked for more than 143 seconds.
      Not tainted 6.16.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.93        state:D stack:25384 pid:6843  tgid:6791  ppid:6376   task_flags:0x400140 flags:0x00004004
Call Trace:
 <TASK>
 __schedule+0x16fd/0x4cf0
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 rwsem_down_write_slowpath+0xbec/0x1030
 down_write+0x1ab/0x1f0
 path_openat+0x8da/0x3830
 do_filp_open+0x1fa/0x410
 do_sys_openat2+0x121/0x1c0
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7feae418e9a9
RSP: 002b:00007feae4fb9038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007feae43b6080 RCX: 00007feae418e9a9
RDX: 0000000000105042 RSI: 0000200000000180 RDI: ffffffffffffff9c
RBP: 00007feae4210d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000189 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007feae43b6080 R15: 00007ffedbd872c8
 </TASK>
INFO: task syz.3.93:6850 blocked for more than 143 seconds.
      Not tainted 6.16.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.93        state:D stack:28200 pid:6850  tgid:6791  ppid:6376   task_flags:0x400040 flags:0x00004004
Call Trace:
 <TASK>
 __schedule+0x16fd/0x4cf0
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 rwsem_down_read_slowpath+0x552/0x880
 down_read+0x98/0x2e0
 path_openat+0x8cb/0x3830
 do_filp_open+0x1fa/0x410
 do_sys_openat2+0x121/0x1c0
 __x64_sys_open+0x11e/0x150
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7feae418e9a9
RSP: 002b:00007feae4f98038 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007feae43b6160 RCX: 00007feae418e9a9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000d80
RBP: 00007feae4210d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007feae43b6160 R15: 00007ffedbd872c8
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/34:
 #0: ffffffff8e13f0e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5659:
 #0: ffff88810fea10a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900029062f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400
5 locks held by syz.3.93/6794:
 #0: ffff888023d2e428 (sb_writers#18){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90
 #1: ffff88801ddb8148 (&sb->s_type->i_mutex_key#25){++++}-{4:4}, at: path_openat+0x8da/0x3830
 #2: ffff88801ddb8530 (&inode->ei_update_lock){+.+.}-{4:4}, at: __bch2_create+0x2f2/0xb90
 #3: ffff88811ba84398 (&c->btree_trans_barrier){.+.+}-{0:0}, at: bch2_trans_srcu_lock+0xaf/0x220
 #4: ffff88811baa6710 (&c->gc_lock){.+.+}-{4:4}, at: bch2_btree_update_start+0x542/0x1de0
2 locks held by syz.3.93/6843:
 #0: ffff888023d2e428 (sb_writers#18){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90
 #1: ffff88801ddb8148 (&sb->s_type->i_mutex_key#25){++++}-{4:4}, at: path_openat+0x8da/0x3830
1 lock held by syz.3.93/6850:
 #0: ffff88801ddb8148 (&sb->s_type->i_mutex_key#25){++++}-{4:4}, at: path_openat+0x8cb/0x3830
1 lock held by syz.3.667/10618:

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 34 Comm: khungtaskd Not tainted 6.16.0-rc7-syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250
 nmi_cpu_backtrace+0x39e/0x3d0
 nmi_trigger_cpumask_backtrace+0x17a/0x300
 watchdog+0xfee/0x1030
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 10618 Comm: syz.3.667 Not tainted 6.16.0-rc7-syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__might_resched+0x20/0x610
Code: 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec e0 00 00 00 89 54 24 2c <89> 74 24 14 48 89 7c 24 20 65 48 8b 05 bf 48 0d 11 48 89 84 24 c0
RSP: 0018:ffffc900046ef8c0 EFLAGS: 00000286
RAX: 0000000000000000 RBX: ffff888108d0d640 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 00000000000000a2 RDI: ffffffff8be244c0
RBP: ffffc900046ef9d8 R08: ffffc900046efad7 R09: 0000000000000000
R10: ffffc900046efaa0 R11: fffff520008ddf5b R12: dffffc0000000000
R13: dffffc0000000000 R14: ffffffff8be244c0 R15: 0000000000000000
FS:  00007f1f620126c0(0000) GS:ffff8880b8623000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1f56bff000 CR3: 000000003f34e000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 __might_fault+0x77/0x130
 _copy_from_user+0x28/0xb0
 ___sys_recvmsg+0x12e/0x510
 do_recvmmsg+0x307/0x770
 __x64_sys_recvmmsg+0x190/0x240
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1f6118e9a9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1f62012038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f1f613b6080 RCX: 00007f1f6118e9a9
RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000006
RBP: 00007f1f61210d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f1f613b6080 R15: 00007fff55ab98f8
 </TASK>
