INFO: task syz.2.1969:13594 blocked for more than 143 seconds.
Not tainted 6.11.0-next-20240927-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.1969 state:D stack:27384 pid:13594 tgid:13574 ppid:13294 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6675
__schedule_loop kernel/sched/core.c:6752 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6767
__bch2_two_state_lock+0x229/0x2c0 fs/bcachefs/two_state_shared_lock.c:7
bch2_two_state_lock fs/bcachefs/two_state_shared_lock.h:55 [inline]
bch2_read_iter+0x235/0x1470 fs/bcachefs/fs-io-direct.c:207
new_sync_read fs/read_write.c:488 [inline]
vfs_read+0x9bb/0xbc0 fs/read_write.c:569
ksys_read+0x183/0x2b0 fs/read_write.c:712
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: 0033:0x7f906577dff9
RSP: 002b:00007f90665d7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f9065936058 RCX: 00007f906577dff9
RDX: 0000000000002020 RSI: 0000000020005b80 RDI: 0000000000000005
RBP: 00007f90657f0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f9065936058 R15: 00007ffca4334058
INFO: task syz.2.1969:13596 blocked for more than 144 seconds.
Not tainted 6.11.0-next-20240927-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.1969 state:D stack:25336 pid:13596 tgid:13574 ppid:13294 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6675
__schedule_loop kernel/sched/core.c:6752 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6767
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6824
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:815 [inline]
bch2_write_iter+0x134/0x23f0 fs/bcachefs/fs-io-buffered.c:1034
new_sync_write fs/read_write.c:590 [inline]
vfs_write+0xa6d/0xc90 fs/read_write.c:683
ksys_write+0x183/0x2b0 fs/read_write.c:736
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: 0033:0x7f906577dff9
RSP: 002b:00007f90665b6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f9065936130 RCX: 00007f906577dff9
RDX: 0000000000000090 RSI: 0000000020000480 RDI: 0000000000000004
RBP: 00007f90657f0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f9065936130 R15: 00007ffca4334058
INFO: task syz.2.1969:13597 blocked for more than 144 seconds.
Not tainted 6.11.0-next-20240927-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.1969 state:D stack:27392 pid:13597 tgid:13574 ppid:13294 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6675
__schedule_loop kernel/sched/core.c:6752 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6767
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6824
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:815 [inline]
do_truncate fs/open.c:63 [inline]
do_ftruncate+0x44e/0x580 fs/open.c:181
do_sys_ftruncate fs/open.c:199 [inline]
__do_sys_ftruncate fs/open.c:207 [inline]
__se_sys_ftruncate fs/open.c:205 [inline]
__x64_sys_ftruncate+0x95/0xf0 fs/open.c:205
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: 0033:0x7f906577dff9
RSP: 002b:00007f9066595038 EFLAGS: 00000246 ORIG_RAX: 000000000000004d
RAX: ffffffffffffffda RBX: 00007f9065936208 RCX: 00007f906577dff9
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000005
RBP: 00007f90657f0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f9065936208 R15: 00007ffca4334058
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e937de0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e937de0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e937de0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6720
2 locks held by jfsCommit/111:
#0: ffff888078010920 (&(imap->im_aglock[index])){+.+.}-{3:3}, at: diFree+0x37c/0x2fb0 fs/jfs/jfs_imap.c:889
#1: ffff8880515a41c0 (&jfs_ip->rdwrlock/1){++++}-{3:3}, at: diFree+0x398/0x2fb0 fs/jfs/jfs_imap.c:894
2 locks held by getty/4983:
#0: ffff88814b8170a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
2 locks held by syz-executor/13387:
#0: ffff8880630ee0e0 (&type->s_umount_key#88){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff8880630ee0e0 (&type->s_umount_key#88){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff8880630ee0e0 (&type->s_umount_key#88){++++}-{3:3}, at: deactivate_super+0xb5/0xf0 fs/super.c:505
#1: ffffffff8ed5f188 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xb2/0x530 fs/jfs/jfs_logmgr.c:1444
5 locks held by syz.2.1969/13575:
#0: ffff8880693c4420 (sb_writers#25){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
#1: ffff888051789038 (&sb->s_type->i_mutex_key#37){++++}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline]
#1: ffff888051789038 (&sb->s_type->i_mutex_key#37){++++}-{3:3}, at: do_truncate+0x20c/0x310 fs/open.c:63
#2: ffff888064580a38 (&c->snapshot_create_lock){.+.+}-{3:3}, at: bch2_truncate+0x16d/0x2c0 fs/bcachefs/io_misc.c:290
#3: ffff888064584398 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:151 [inline]
#3: ffff888064584398 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:250 [inline]
#3: ffff888064584398 (&c->btree_trans_barrier){.+.+}-{0:0}, at: __bch2_trans_get+0x7de/0xd20 fs/bcachefs/btree_iter.c:3215
#4: ffff8880645a66d0 (&c->gc_lock){.+.+}-{3:3}, at: bch2_btree_update_start+0x682/0x14e0 fs/bcachefs/btree_update_interior.c:1202
1 lock held by syz.2.1969/13594:
#0: ffff88806b5957b8 (&f->f_pos_lock){+.+.}-{3:3}, at: fdget_pos+0x24e/0x320 fs/file.c:1160
3 locks held by syz.2.1969/13596:
#0: ffff88806b595978 (&f->f_pos_lock){+.+.}-{3:3}, at: fdget_pos+0x24e/0x320 fs/file.c:1160
#1: ffff8880693c4420 (sb_writers#25){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2949 [inline]
#1: ffff8880693c4420 (sb_writers#25){.+.+}-{0:0}, at: vfs_write+0x224/0xc90 fs/read_write.c:679
#2: ffff888051789038 (&sb->s_type->i_mutex_key#37){++++}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline]
#2: ffff888051789038 (&sb->s_type->i_mutex_key#37){++++}-{3:3}, at: bch2_write_iter+0x134/0x23f0 fs/bcachefs/fs-io-buffered.c:1034
2 locks held by syz.2.1969/13597:
#0: ffff8880693c4420 (sb_writers#25){.+.+}-{0:0}, at: do_ftruncate+0x28b/0x580 fs/open.c:178
#1: ffff888051789038 (&sb->s_type->i_mutex_key#37){++++}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline]
#1: ffff888051789038 (&sb->s_type->i_mutex_key#37){++++}-{3:3}, at: do_truncate fs/open.c:63 [inline]
#1: ffff888051789038 (&sb->s_type->i_mutex_key#37){++++}-{3:3}, at: do_ftruncate+0x44e/0x580 fs/open.c:181
1 lock held by syz.4.2196/14632:
#0: ffff8880630ee0e0 (&type->s_umount_key#88){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff8880630ee0e0 (&type->s_umount_key#88){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz-executor/14786:
#0: ffffffff8e93d378 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline]
#0: ffffffff8e93d378 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:976
1 lock held by syz-executor/14818:
#0: ffffffff8e93d378 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline]
#0: ffffffff8e93d378 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:976
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-next-20240927-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__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:223 [inline]
watchdog+0xff4/0x1040 kernel/hung_task.c:379
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
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:106 [inline]
NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:111