INFO: task syz.0.114:6736 blocked for more than 143 seconds.
Not tainted 6.13.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.114 state:D stack:27360 pid:6736 tgid:6730 ppid:5822 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x17fb/0x4be0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
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:853 [inline]
filename_create+0x260/0x540 fs/namei.c:4080
do_symlinkat+0xf9/0x3a0 fs/namei.c:4688
__do_sys_symlink fs/namei.c:4716 [inline]
__se_sys_symlink fs/namei.c:4714 [inline]
__x64_sys_symlink+0x7a/0x90 fs/namei.c:4714
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: 0033:0x7f584e985d19
RSP: 002b:00007f584e7b7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000058
RAX: ffffffffffffffda RBX: 00007f584eb76160 RCX: 00007f584e985d19
RDX: 0000000000000000 RSI: 00000000200059c0 RDI: 00000000200049c0
RBP: 00007f584ea01a20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f584eb76160 R15: 00007ffdb97ff428
INFO: task syz.0.114:6739 blocked for more than 144 seconds.
Not tainted 6.13.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.114 state:D stack:27360 pid:6739 tgid:6730 ppid:5822 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x17fb/0x4be0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
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:853 [inline]
lock_rename fs/namei.c:3215 [inline]
do_renameat2+0x62c/0x13f0 fs/namei.c:5159
__do_sys_renameat2 fs/namei.c:5258 [inline]
__se_sys_renameat2 fs/namei.c:5255 [inline]
__x64_sys_renameat2+0xce/0xe0 fs/namei.c:5255
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: 0033:0x7f584e985d19
RSP: 002b:00007f584e796038 EFLAGS: 00000246 ORIG_RAX: 000000000000013c
RAX: ffffffffffffffda RBX: 00007f584eb76240 RCX: 00007f584e985d19
RDX: ffffffffffffff9c RSI: 0000000020000480 RDI: ffffffffffffff9c
RBP: 00007f584ea01a20 R08: 0000000000000002 R09: 0000000000000000
R10: 00000000200004c0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f584eb76240 R15: 00007ffdb97ff428
INFO: task syz.0.114:6740 blocked for more than 145 seconds.
Not tainted 6.13.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.114 state:D stack:25336 pid:6740 tgid:6730 ppid:5822 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x17fb/0x4be0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
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:818 [inline]
chown_common+0x3e1/0x850 fs/open.c:768
vfs_fchown fs/open.c:846 [inline]
ksys_fchown+0xe2/0x150 fs/open.c:858
__do_sys_fchown fs/open.c:863 [inline]
__se_sys_fchown fs/open.c:861 [inline]
__x64_sys_fchown+0x7a/0x90 fs/open.c:861
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: 0033:0x7f584e985d19
RSP: 002b:00007f584e775038 EFLAGS: 00000246 ORIG_RAX: 000000000000005d
RAX: ffffffffffffffda RBX: 00007f584eb76320 RCX: 00007f584e985d19
RDX: 000000000000000a RSI: 000000003a736e6f RDI: 0000000000000004
RBP: 00007f584ea01a20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f584eb76320 R15: 00007ffdb97ff428
INFO: task syz.0.114:6743 blocked for more than 145 seconds.
Not tainted 6.13.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.114 state:D stack:25952 pid:6743 tgid:6730 ppid:5822 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x17fb/0x4be0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
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:853 [inline]
filename_create+0x260/0x540 fs/namei.c:4080
do_mkdirat+0xbd/0x3a0 fs/namei.c:4326
__do_sys_mkdirat fs/namei.c:4349 [inline]
__se_sys_mkdirat fs/namei.c:4347 [inline]
__x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4347
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: 0033:0x7f584e984587
RSP: 002b:00007f584e753e68 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f584e753ef0 RCX: 00007f584e984587
RDX: 00000000000001ff RSI: 0000000020000680 RDI: 00000000ffffff9c
RBP: 0000000020000080 R08: 0000000020000d40 R09: 0000000000000000
R10: 0000000020000080 R11: 0000000000000246 R12: 0000000020000680
R13: 00007f584e753eb0 R14: 0000000000000000 R15: 0000000000000000
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6744
3 locks held by kworker/u8:5/63:
1 lock held by udevd/5195:
#0: ffff8880b863e758 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598
2 locks held by getty/5578:
#0: ffff888034f880a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000330b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
3 locks held by syz.0.114/6735:
2 locks held by syz.0.114/6736:
#0: ffff888059b6c420 (sb_writers#33){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
#1: ffff88807b5c8180 (&type->i_mutex_dir_key#25/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:853 [inline]
#1: ffff88807b5c8180 (&type->i_mutex_dir_key#25/1){+.+.}-{4:4}, at: filename_create+0x260/0x540 fs/namei.c:4080
2 locks held by syz.0.114/6739:
#0: ffff888059b6c420 (sb_writers#33){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
#1: ffff88807b5c8180 (&type->i_mutex_dir_key#25/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:853 [inline]
#1: ffff88807b5c8180 (&type->i_mutex_dir_key#25/1){+.+.}-{4:4}, at: lock_rename fs/namei.c:3215 [inline]
#1: ffff88807b5c8180 (&type->i_mutex_dir_key#25/1){+.+.}-{4:4}, at: do_renameat2+0x62c/0x13f0 fs/namei.c:5159
2 locks held by syz.0.114/6740:
#0: ffff888059b6c420 (sb_writers#33){.+.+}-{0:0}, at: mnt_want_write_file+0x5e/0x200 fs/namespace.c:559
#1: ffff88807b5c8180 (&type->i_mutex_dir_key#25){++++}-{4:4}, at: inode_lock include/linux/fs.h:818 [inline]
#1: ffff88807b5c8180 (&type->i_mutex_dir_key#25){++++}-{4:4}, at: chown_common+0x3e1/0x850 fs/open.c:768
2 locks held by syz.0.114/6743:
#0: ffff888059b6c420 (sb_writers#33){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
#1: ffff88807b5c8180 (&type->i_mutex_dir_key#25/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:853 [inline]
#1: ffff88807b5c8180 (&type->i_mutex_dir_key#25/1){+.+.}-{4:4}, at: filename_create+0x260/0x540 fs/namei.c:4080
2 locks held by syz-executor/7150:
#0: ffffffff8f041728 (bio_slab_lock){+.+.}-{4:4}, at: bio_put_slab block/bio.c:140 [inline]
#0: ffffffff8f041728 (bio_slab_lock){+.+.}-{4:4}, at: bioset_exit+0x42f/0x650 block/bio.c:1755
#1: ffffffff8e93cec0 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x4c/0x530 kernel/rcu/tree.c:4565
1 lock held by rm/8360:
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
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: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
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 61 Comm: kworker/u8:4 Not tainted 6.13.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
Workqueue: events_unbound nsim_dev_trap_report_work
RIP: 0010:__debug_check_no_obj_freed lib/debugobjects.c:1089 [inline]
RIP: 0010:debug_check_no_obj_freed+0x25b/0x580 lib/debugobjects.c:1129
Code: 86 02 07 48 89 44 24 18 4c 89 fb 48 c1 eb 03 48 b8 00 00 00 00 00 fc ff df 80 3c 03 00 74 08 4c 89 ff e8 38 91 42 fd 49 8b 07 <48> 85 c0 0f 84 eb 02 00 00 48 89 5c 24 48 4c 89 7c 24 50 44 89 74
RSP: 0018:ffffc9000213f880 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 1ffffffff34a8e87 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffc9000213f760
RBP: ffffc9000213f9d0 R08: 0000000000000003 R09: fffff52000427eec
R10: dffffc0000000000 R11: fffff52000427eec R12: ffff88807f7f5000
R13: ffff88807f7f4000 R14: 0000000000000000 R15: ffffffff9a547438
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f02d7c91440 CR3: 000000000e736000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
slab_free_hook mm/slub.c:2284 [inline]
slab_free mm/slub.c:4613 [inline]
kfree+0x115/0x430 mm/slub.c:4761
skb_kfree_head net/core/skbuff.c:1086 [inline]
skb_free_head net/core/skbuff.c:1098 [inline]
skb_release_data+0x6a0/0x8a0 net/core/skbuff.c:1125
skb_release_all net/core/skbuff.c:1190 [inline]
__kfree_skb net/core/skbuff.c:1204 [inline]
consume_skb+0x9f/0xf0 net/core/skbuff.c:1436
nsim_dev_trap_report drivers/net/netdevsim/dev.c:821 [inline]
nsim_dev_trap_report_work+0x7cc/0xb50 drivers/net/netdevsim/dev.c:851
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
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