INFO: task syz.0.146:6831 blocked for more than 143 seconds.
Not tainted 6.14.0-rc7-syzkaller-00074-ga7f2e10ecd8f #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.146 state:D stack:13968 pid:6831 tgid:6830 ppid:5821 task_flags:0x400140 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5378 [inline]
__schedule+0x18bc/0x4c40 kernel/sched/core.c:6765
__schedule_loop kernel/sched/core.c:6842 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6857
io_schedule+0x8d/0x110 kernel/sched/core.c:7690
folio_wait_bit_common+0x839/0xee0 mm/filemap.c:1317
folio_lock include/linux/pagemap.h:1163 [inline]
truncate_inode_pages_range+0xc1f/0x10e0 mm/truncate.c:380
truncate_inode_pages mm/truncate.c:407 [inline]
truncate_pagecache mm/truncate.c:716 [inline]
truncate_setsize+0xcf/0xf0 mm/truncate.c:741
bchfs_truncate+0x6e0/0xc80 fs/bcachefs/fs-io.c:471
notify_change+0xbca/0xe90 fs/attr.c:552
do_truncate+0x220/0x310 fs/open.c:65
handle_truncate fs/namei.c:3451 [inline]
do_open fs/namei.c:3834 [inline]
path_openat+0x2e1b/0x3590 fs/namei.c:3989
do_filp_open+0x27f/0x4e0 fs/namei.c:4016
do_sys_openat2+0x13e/0x1d0 fs/open.c:1428
do_sys_open fs/open.c:1443 [inline]
__do_sys_open fs/open.c:1451 [inline]
__se_sys_open fs/open.c:1447 [inline]
__x64_sys_open+0x225/0x270 fs/open.c:1447
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: 0033:0x7f9f6178d169
RSP: 002b:00007f9f62693038 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f9f619a5fa0 RCX: 00007f9f6178d169
RDX: 0000000000000002 RSI: 000000000014127e RDI: 00002000000003c0
RBP: 00007f9f6180e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f9f619a5fa0 R15: 00007ffd59e1e458
INFO: task syz.0.146:6863 blocked for more than 144 seconds.
Not tainted 6.14.0-rc7-syzkaller-00074-ga7f2e10ecd8f #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.146 state:D stack:15312 pid:6863 tgid:6830 ppid:5821 task_flags:0x440040 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5378 [inline]
__schedule+0x18bc/0x4c40 kernel/sched/core.c:6765
__schedule_loop kernel/sched/core.c:6842 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6857
__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_readahead+0x9e1/0x1240 fs/bcachefs/fs-io-buffered.c:272
read_pages+0x179/0x570 mm/readahead.c:160
page_cache_ra_unbounded+0x2d4/0x820 mm/readahead.c:264
filemap_readahead mm/filemap.c:2559 [inline]
filemap_get_pages+0x9e4/0x1fb0 mm/filemap.c:2604
filemap_splice_read+0x68e/0xef0 mm/filemap.c:2980
do_splice_read fs/splice.c:985 [inline]
splice_direct_to_actor+0x4af/0xc80 fs/splice.c:1089
do_splice_direct_actor fs/splice.c:1207 [inline]
do_splice_direct+0x289/0x3e0 fs/splice.c:1233
do_sendfile+0x564/0x8a0 fs/read_write.c:1363
__do_sys_sendfile64 fs/read_write.c:1424 [inline]
__se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1410
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: 0033:0x7f9f6178d169
RSP: 002b:00007f9f62672038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f9f619a6080 RCX: 00007f9f6178d169
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000007
RBP: 00007f9f6180e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f9f619a6080 R15: 00007ffd59e1e458
INFO: task syz.0.146:6866 blocked for more than 144 seconds.
Not tainted 6.14.0-rc7-syzkaller-00074-ga7f2e10ecd8f #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.146 state:D
stack:26264 pid:6866 tgid:6830 ppid:5821 task_flags:0x400140 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5378 [inline]
__schedule+0x18bc/0x4c40 kernel/sched/core.c:6765
__schedule_loop kernel/sched/core.c:6842 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6857
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6914
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:877 [inline]
process_measurement+0x439/0x1fb0 security/integrity/ima/ima_main.c:250
ima_file_check+0xd9/0x120 security/integrity/ima/ima_main.c:603
security_file_post_open+0xb9/0x280 security/security.c:3130
do_open fs/namei.c:3832 [inline]
path_openat+0x2cca/0x3590 fs/namei.c:3989
do_filp_open+0x27f/0x4e0 fs/namei.c:4016
do_sys_openat2+0x13e/0x1d0 fs/open.c:1428
do_sys_open fs/open.c:1443 [inline]
__do_sys_openat fs/open.c:1459 [inline]
__se_sys_openat fs/open.c:1454 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1454
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: 0033:0x7f9f6178d169
RSP: 002b:00007f9f62651038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f9f619a6160 RCX: 00007f9f6178d169
RDX: 0000000000107042 RSI: 0000200000000040 RDI: ffffffffffffff9c
RBP: 00007f9f6180e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f9f619a6160 R15: 00007ffd59e1e458
INFO: task syz.0.146:6867 blocked for more than 146 seconds.
Not tainted 6.14.0-rc7-syzkaller-00074-ga7f2e10ecd8f #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.146 state:D stack:22384 pid:6867 tgid:6830 ppid:5821 task_flags:0x400140 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5378 [inline]
__schedule+0x18bc/0x4c40 kernel/sched/core.c:6765
__schedule_loop kernel/sched/core.c:6842 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6857
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6914
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:877 [inline]
process_measurement+0x439/0x1fb0 security/integrity/ima/ima_main.c:250
ima_file_check+0xd9/0x120 security/integrity/ima/ima_main.c:603
security_file_post_open+0xb9/0x280 security/security.c:3130
do_open fs/namei.c:3832 [inline]
path_openat+0x2cca/0x3590 fs/namei.c:3989
do_filp_open+0x27f/0x4e0 fs/namei.c:4016
do_sys_openat2+0x13e/0x1d0 fs/open.c:1428
do_sys_open fs/open.c:1443 [inline]
__do_sys_openat fs/open.c:1459 [inline]
__se_sys_openat fs/open.c:1454 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1454
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: 0033:0x7f9f6178d169
RSP: 002b:00007f9f62630038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f9f619a6240 RCX: 00007f9f6178d169
RDX: 00000000000c4042 RSI: 0000200000000300 RDI: ffffffffffffff9c
RBP: 00007f9f6180e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000000001ff R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f9f619a6240 R15: 00007ffd59e1e458
INFO: task syz.0.146:6870 blocked for more than 147 seconds.
Not tainted 6.14.0-rc7-syzkaller-00074-ga7f2e10ecd8f #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.146 state:D stack:26544 pid:6870 tgid:6830 ppid:5821 task_flags:0x400140 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5378 [inline]
__schedule+0x18bc/0x4c40 kernel/sched/core.c:6765
__schedule_loop kernel/sched/core.c:6842 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6857
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6914
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:877 [inline]
process_measurement+0x439/0x1fb0 security/integrity/ima/ima_main.c:250
ima_file_check+0xd9/0x120 security/integrity/ima/ima_main.c:603
security_file_post_open+0xb9/0x280 security/security.c:3130
do_open fs/namei.c:3832 [inline]
path_openat+0x2cca/0x3590 fs/namei.c:3989
do_filp_open+0x27f/0x4e0 fs/namei.c:4016
do_sys_openat2+0x13e/0x1d0 fs/open.c:1428
do_sys_open fs/open.c:1443 [inline]
__do_sys_openat fs/open.c:1459 [inline]
__se_sys_openat fs/open.c:1454 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1454
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: 0033:0x7f9f6178d169
RSP: 002b:00007f9f6260f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f9f619a6320 RCX: 00007f9f6178d169
RDX: 00000000000c4042 RSI: 0000200000000300 RDI: ffffffffffffff9c
RBP: 00007f9f6180e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000000001ff R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f9f619a6320 R15: 00007ffd59e1e458
Showing all locks held in the system:
1 lock held by pool_workqueue_/3:
1 lock held by khungtaskd/31:
#0: ffffffff8eb393e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8eb393e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8eb393e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6746
2 locks held by getty/5581:
#0: ffff88814d7290a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x616/0x1770 drivers/tty/n_tty.c:2211
1 lock held by udevd/5831:
3 locks held by udevd/5836:
4 locks held by syz-executor/6649:
1 lock held by syz-executor/6797:
2 locks held by syz.0.146/6831:
#0: ffff88805beda420 (sb_writers#25){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:547
#1: ffff888058a645a0 (&sb->s_type->i_mutex_key#29){++++}-{4:4}, at: inode_lock include/linux/fs.h:877 [inline]
#1: ffff888058a645a0 (&sb->s_type->i_mutex_key#29){++++}-{4:4}, at: do_truncate+0x20c/0x310 fs/open.c:63
1 lock held by syz.0.146/6863:
#0: ffff888058a64740 (mapping.invalidate_lock#10){.+.+}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:932 [inline]
#0: ffff888058a64740 (mapping.invalidate_lock#10){.+.+}-{4:4}, at: page_cache_ra_unbounded+0x156/0x820 mm/readahead.c:228
1 lock held by syz.0.146/6866:
#0: ffff888058a645a0 (&sb->s_type->i_mutex_key#29){++++}-{4:4}, at: inode_lock include/linux/fs.h:877 [inline]
#0: ffff888058a645a0 (&sb->s_type->i_mutex_key#29){++++}-{4:4}, at: process_measurement+0x439/0x1fb0 security/integrity/ima/ima_main.c:250
1 lock held by syz.0.146/6867:
#0: ffff888058a645a0 (&sb->s_type->i_mutex_key#29){++++}-{4:4}, at: inode_lock include/linux/fs.h:877 [inline]
#0: ffff888058a645a0 (&sb->s_type->i_mutex_key#29){++++}-{4:4}, at: process_measurement+0x439/0x1fb0 security/integrity/ima/ima_main.c:250
1 lock held by syz.0.146/6870:
#0: ffff888058a645a0 (&sb->s_type->i_mutex_key#29){++++}-{4:4}, at: inode_lock include/linux/fs.h:877 [inline]
#0: ffff888058a645a0 (&sb->s_type->i_mutex_key#29){++++}-{4:4}, at: process_measurement+0x439/0x1fb0 security/integrity/ima/ima_main.c:250
1 lock held by syz-executor/7106:
#0: ffffffff8eb3e8b8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:302 [inline]
#0: ffffffff8eb3e8b8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x381/0x820 kernel/rcu/tree_exp.h:996
1 lock held by syz.4.450/9348:
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.14.0-rc7-syzkaller-00074-ga7f2e10ecd8f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
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:236 [inline]
watchdog+0x1058/0x10a0 kernel/hung_task.c:399
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
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
CPU: 1 UID: 0 PID: 8176 Comm: syz-executor Not tainted 6.14.0-rc7-syzkaller-00074-ga7f2e10ecd8f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:23 [inline]
RIP: 0010:raw_atomic_read include/linux/atomic/atomic-arch-fallback.h:457 [inline]
RIP: 0010:rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline]
RIP: 0010:rcu_is_watching+0x5e/0xb0 kernel/rcu/tree.c:716
Code: 03 42 80 3c 38 00 74 08 4c 89 f7 e8 3c 59 7f 00 48 c7 c3 98 79 03 00 49 03 1e 48 89 d8 48 c1 e8 03 42 0f b6 04 38 84 c0 75 22 <8b> 03 65 ff 0d 81 95 5c 7e 74 10 83 e0 04 c1 e8 02 5b 41 5e 41 5f
RSP: 0018:ffffc90004ec7500 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff8880b8737998 RCX: ffffffff819cd394
RDX: 0000000000000000 RSI: ffffffff8c802cc0 RDI: ffffffff8c802c80
RBP: ffffc90004ec7668 R08: ffffffff903bd077 R09: 1ffffffff2077a0e
R10: dffffc0000000000 R11: fffffbfff2077a0f R12: 1ffff920009d8eac
R13: dffffc0000000000 R14: ffffffff8e53db58 R15: dffffc0000000000
FS: 000055558f96c500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555c1c05c8 CR3: 00000000424fe000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
trace_lock_acquire include/trace/events/lock.h:24 [inline]
lock_acquire+0xe3/0x550 kernel/locking/lockdep.c:5822
printk_legacy_allow_spinlock_enter kernel/printk/printk.c:3034 [inline]
console_emit_next_record kernel/printk/printk.c:3121 [inline]
console_flush_all+0x81b/0xeb0 kernel/printk/printk.c:3210
__console_flush_and_unlock kernel/printk/printk.c:3269 [inline]
console_unlock+0x14f/0x3b0 kernel/printk/printk.c:3309
vprintk_emit+0x730/0xa10 kernel/printk/printk.c:2432
_printk+0xd5/0x120 kernel/printk/printk.c:2457
__ext4_msg+0x2db/0x2f0 fs/ext4/super.c:998
ext4_put_super+0xc5/0xd10 fs/ext4/super.c:1303
generic_shutdown_super+0x139/0x2d0 fs/super.c:642
kill_block_super+0x44/0x90 fs/super.c:1710
ext4_kill_sb+0x68/0xa0 fs/ext4/super.c:7368
deactivate_locked_super+0xc4/0x130 fs/super.c:473
cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1413
task_work_run+0x24f/0x310 kernel/task_work.c:227
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x13f/0x340 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7b2998e497
Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffc62736c98 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f7b2998e497
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc62736d50
RBP: 00007ffc62736d50 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffc62737e40
R13: 00007f7b29a0e08c R14: 000000000004b7f7 R15: 00007ffc6273a000