INFO: task syz.2.38:6231 blocked for more than 143 seconds.
Not tainted 6.14.0-rc7-syzkaller-00196-g88d324e69ea9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.38 state:D stack:26544 pid:6231 tgid:6187 ppid:5825 task_flags:0x400040 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
io_schedule+0x8d/0x110 kernel/sched/core.c:7690
folio_wait_bit_common+0x839/0xee0 mm/filemap.c:1317
folio_wait_writeback+0xb0/0x100 mm/page-writeback.c:3179
__filemap_fdatawait_range+0x17c/0x2b0 mm/filemap.c:541
filemap_write_and_wait_range+0x2d1/0x3a0 mm/filemap.c:702
bch2_write_invalidate_inode_pages_range+0x82/0x120 fs/bcachefs/fs-io-pagecache.c:61
bchfs_fcollapse_finsert+0x282/0x630 fs/bcachefs/fs-io.c:588
bch2_fallocate_dispatch+0x3c9/0x540
vfs_fallocate+0x623/0x7a0 fs/open.c:338
ksys_fallocate fs/open.c:362 [inline]
__do_sys_fallocate fs/open.c:367 [inline]
__se_sys_fallocate fs/open.c:365 [inline]
__x64_sys_fallocate+0xbc/0x110 fs/open.c:365
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: 0033:0x7f764578d169
RSP: 002b:00007f76465a9038 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007f76459a6080 RCX: 00007f764578d169
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000009
RBP: 00007f764580e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000008000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f76459a6080 R15: 00007ffcb9b21cd8
INFO: task syz.2.38:6233 blocked for more than 144 seconds.
Not tainted 6.14.0-rc7-syzkaller-00196-g88d324e69ea9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.38 state:D stack:27512 pid:6233 tgid:6187 ppid:5825 task_flags:0x400040 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_mmap+0x13c/0x220 security/integrity/ima/ima_main.c:458
security_mmap_file+0x7aa/0xa40 security/security.c:2982
vm_mmap_pgoff+0x14f/0x530 mm/util.c:572
ksys_mmap_pgoff+0x4eb/0x720 mm/mmap.c:607
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: 0033:0x7f764578d169
RSP: 002b:00007f7646588038 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f76459a6160 RCX: 00007f764578d169
RDX: 00000000027ffff7 RSI: 0000000000600000 RDI: 0000200000000000
RBP: 00007f764580e2a0 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000004012011 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f76459a6160 R15: 00007ffcb9b21cd8
INFO: task syz.2.38:6235 blocked for more than 145 seconds.
Not tainted 6.14.0-rc7-syzkaller-00196-g88d324e69ea9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.38 state:D stack:27552 pid:6235 tgid:6187 ppid:5825 task_flags:0x400040 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]
do_truncate+0x20c/0x310 fs/open.c:63
vfs_truncate+0x492/0x530 fs/open.c:115
do_sys_truncate+0xdb/0x190 fs/open.c:138
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: 0033:0x7f764578d169
RSP: 002b:00007f7646567038 EFLAGS: 00000246 ORIG_RAX: 000000000000004c
RAX: ffffffffffffffda RBX: 00007f76459a6240 RCX: 00007f764578d169
RDX: 0000000000000000 RSI: 000000000000f000 RDI: 0000200000000080
RBP: 00007f764580e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f76459a6240 R15: 00007ffcb9b21cd8
INFO: task syz.2.38:6237 blocked for more than 146 seconds.
Not tainted 6.14.0-rc7-syzkaller-00196-g88d324e69ea9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.38 state:D stack:27552 pid:6237 tgid:6187 ppid:5825 task_flags:0x400040 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_nested+0x1e0/0x220 kernel/locking/rwsem.c:1694
inode_lock_nested include/linux/fs.h:912 [inline]
filename_create+0x260/0x540 fs/namei.c:4082
do_mkdirat+0xbd/0x3a0 fs/namei.c:4328
__do_sys_mkdirat fs/namei.c:4351 [inline]
__se_sys_mkdirat fs/namei.c:4349 [inline]
__x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4349
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: 0033:0x7f764578b9d7
RSP: 002b:00007f7646524e68 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f7646524ef0 RCX: 00007f764578b9d7
RDX: 00000000000001ff RSI: 0000200000000100 RDI: 00000000ffffff9c
RBP: 0000000000000000 R08: 0000200000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000100
R13: 00007f7646524eb0 R14: 0000000000000000 R15: 0000000000000000
INFO: task syz.0.47:6307 blocked for more than 146 seconds.
Not tainted 6.14.0-rc7-syzkaller-00196-g88d324e69ea9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.47 state:D stack:23840 pid:6307 tgid:6306 ppid:5834 task_flags:0x400140 flags:0x00004004
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_wait_writeback+0xb0/0x100 mm/page-writeback.c:3179
__filemap_fdatawait_range+0x17c/0x2b0 mm/filemap.c:541
filemap_fdatawait_keep_errors+0x31/0xd0 mm/filemap.c:635
wait_sb_inodes fs/fs-writeback.c:2702 [inline]
sync_inodes_sb+0x8bd/0xb50 fs/fs-writeback.c:2824
iterate_supers+0xc6/0x190 fs/super.c:934
ksys_sync+0xbd/0x1c0 fs/sync.c:102
__do_sys_sync+0xe/0x20 fs/sync.c:113
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: 0033:0x7f88efb8d169
RSP: 002b:00007f88f0992038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f88efda5fa0 RCX: 00007f88efb8d169
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f88efda5fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f88efda5fa0 R15: 00007ffea200b438
Showing all locks held in the system:
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/5582:
#0: ffff88814d4ab0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900032fb2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x616/0x1770 drivers/tty/n_tty.c:2211
1 lock held by syz.2.38/6188:
#0: ffff8880481a4420 (sb_writers#21){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:3035 [inline]
#0: ffff8880481a4420 (sb_writers#21){.+.+}-{0:0}, at: vfs_writev+0x2d6/0xbc0 fs/read_write.c:1048
2 locks held by syz.2.38/6231:
#0: ffff8880481a4420 (sb_writers#21){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:3035 [inline]
#0: ffff8880481a4420 (sb_writers#21){.+.+}-{0:0}, at: vfs_fallocate+0x59d/0x7a0 fs/open.c:337
#1: ffff8880611c9078 (&sb->s_type->i_mutex_key#27){++++}-{4:4}, at: inode_lock include/linux/fs.h:877 [inline]
#1: ffff8880611c9078 (&sb->s_type->i_mutex_key#27){++++}-{4:4}, at: bch2_fallocate_dispatch+0x1e2/0x540 fs/bcachefs/fs-io.c:801
1 lock held by syz.2.38/6233:
#0: ffff8880611c9078 (&sb->s_type->i_mutex_key#27){++++}-{4:4}, at: inode_lock include/linux/fs.h:877 [inline]
#0: ffff8880611c9078 (&sb->s_type->i_mutex_key#27){++++}-{4:4}, at: process_measurement+0x439/0x1fb0 security/integrity/ima/ima_main.c:250
2 locks held by syz.2.38/6235:
#0: ffff8880481a4420 (sb_writers#21){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:547
#1: ffff8880611c9078 (&sb->s_type->i_mutex_key#27){++++}-{4:4}, at: inode_lock include/linux/fs.h:877 [inline]
#1: ffff8880611c9078 (&sb->s_type->i_mutex_key#27){++++}-{4:4}, at: do_truncate+0x20c/0x310 fs/open.c:63
5 locks held by syz.2.38/6236:
#0: ffff8880481a4420 (sb_writers#21){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:547
#1: ffff8880611c88e0 (&sb->s_type->i_mutex_key#27){++++}-{4:4}, at: inode_lock include/linux/fs.h:877 [inline]
#1: ffff8880611c88e0 (&sb->s_type->i_mutex_key#27){++++}-{4:4}, at: open_last_lookups fs/namei.c:3747 [inline]
#1: ffff8880611c88e0 (&sb->s_type->i_mutex_key#27){++++}-{4:4}, at: path_openat+0x89a/0x3590 fs/namei.c:3986
#2: ffff8880611c8cc8 (&inode->ei_update_lock){+.+.}-{4:4}, at: __bch2_create+0x355/0xf40 fs/bcachefs/fs.c:550
#3: ffff888060684378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:164 [inline]
#3: ffff888060684378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:256 [inline]
#3: ffff888060684378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: bch2_trans_srcu_lock+0x9a/0x1a0 fs/bcachefs/btree_iter.c:3225
#4: ffff8880606a66d0 (&c->gc_lock){++++}-{4:4}, at: bch2_btree_update_start+0x680/0x1540 fs/bcachefs/btree_update_interior.c:1182
2 locks held by syz.2.38/6237:
#0: ffff8880481a4420 (sb_writers#21){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:547
#1: ffff8880611c88e0 (&sb->s_type->i_mutex_key#27/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:912 [inline]
#1: ffff8880611c88e0 (&sb->s_type->i_mutex_key#27/1){+.+.}-{4:4}, at: filename_create+0x260/0x540 fs/namei.c:4082
2 locks held by syz.0.47/6307:
#0: ffff8880481a40e0 (&type->s_umount_key#66){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline]
#0: ffff8880481a40e0 (&type->s_umount_key#66){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120
#1: ffff8880481a4948 (&s->s_sync_lock){+.+.}-{4:4}, at: wait_sb_inodes fs/fs-writeback.c:2641 [inline]
#1: ffff8880481a4948 (&s->s_sync_lock){+.+.}-{4:4}, at: sync_inodes_sb+0x32e/0xb50 fs/fs-writeback.c:2824
1 lock held by dhcpcd/6471:
#0: ffff88807b825008 (&sb->s_type->i_mutex_key#9){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:877 [inline]
#0: ffff88807b825008 (&sb->s_type->i_mutex_key#9){+.+.}-{4:4}, at: __sock_release net/socket.c:646 [inline]
#0: ffff88807b825008 (&sb->s_type->i_mutex_key#9){+.+.}-{4:4}, at: sock_close+0x90/0x240 net/socket.c:1398
1 lock held by syz-executor/6605:
#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-executor/7792:
#0: ffff888022f7c0e0 (&type->s_umount_key#98){+.+.}-{4:4}, at: __super_lock fs/super.c:56 [inline]
#0: ffff888022f7c0e0 (&type->s_umount_key#98){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff888022f7c0e0 (&type->s_umount_key#98){+.+.}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505
3 locks held by dhcpcd-run-hook/9012:
#0: ffff8880b863e7d8 (&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: ffff8880207adbb8 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:351 [inline]
#2: ffff8880207adbb8 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: __pte_offset_map_lock+0x1ba/0x300 mm/pgtable-generic.c:402
1 lock held by sed/9020:
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.14.0-rc7-syzkaller-00196-g88d324e69ea9 #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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 13 Comm: kworker/u8:1 Not tainted 6.14.0-rc7-syzkaller-00196-g88d324e69ea9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: bat_events batadv_nc_worker
RIP: 0010:__lock_acquire+0xc71/0x2100 kernel/locking/lockdep.c:5198
Code: 00 00 48 c7 c0 80 e9 61 9a 48 c1 e8 03 48 bf 00 00 00 00 00 fc ff df 0f b6 04 38 84 c0 0f 85 24 0d 00 00 83 3d 4f 04 c5 18 00 <75> 39 48 63 9c 24 88 00 00 00 48 89 d8 48 c1 e8 06 48 8d 3c c5 40
RSP: 0018:ffffc900001277b0 EFLAGS: 00000046
RAX: 0000000000000004 RBX: ffff88801c2f8ad0 RCX: ffffffff9a61e903
RDX: 0000000000000000 RSI: 0000000000000008 RDI: dffffc0000000000
RBP: ffff88801c2f8b40 R08: ffffffff9451792f R09: 1ffffffff28a2f25
R10: dffffc0000000000 R11: fffffbfff28a2f26 R12: ffff88801c2f8ad4
R13: ffff88801c2f8000 R14: 0000000000000000 R15: ffff88801c2f8b60
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc350b5afe4 CR3: 0000000036210000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
_raw_spin_lock_bh+0x35/0x50 kernel/locking/spinlock.c:178
spin_lock_bh include/linux/spinlock.h:356 [inline]
batadv_nc_purge_paths+0xe8/0x3b0 net/batman-adv/network-coding.c:442
batadv_nc_worker+0x365/0x610 net/batman-adv/network-coding.c:722
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xabe/0x18e0 kernel/workqueue.c:3319
worker_thread+0x870/0xd30 kernel/workqueue.c:3400
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