INFO: task syz-executor.3:8914 blocked for more than 143 seconds.
Not tainted 5.17.0-rc5-syzkaller-00041-g73878e5eb1bd #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:28624 pid: 8914 ppid: 3610 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4995 [inline]
__schedule+0x926/0x1080 kernel/sched/core.c:6304
schedule+0x12b/0x1f0 kernel/sched/core.c:6377
rwsem_down_write_slowpath+0xdb7/0x1480 kernel/locking/rwsem.c:1142
__down_write_common kernel/locking/rwsem.c:1259 [inline]
__down_write kernel/locking/rwsem.c:1268 [inline]
down_write+0x163/0x170 kernel/locking/rwsem.c:1515
inode_lock include/linux/fs.h:777 [inline]
chown_common+0x4fd/0x820 fs/open.c:677
do_fchownat+0x165/0x240 fs/open.c:711
__do_sys_chown fs/open.c:731 [inline]
__se_sys_chown fs/open.c:729 [inline]
__x64_sys_chown+0x7e/0x90 fs/open.c:729
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f24a485b059
RSP: 002b:00007f24a31af168 EFLAGS: 00000246 ORIG_RAX: 000000000000005c
RAX: ffffffffffffffda RBX: 00007f24a496e030 RCX: 00007f24a485b059
RDX: 000000000000ee00 RSI: 000000000000ee00 RDI: 0000000020000040
RBP: 00007f24a48b508d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff1277e54f R14: 00007f24a31af300 R15: 0000000000022000
INFO: task syz-executor.4:8915 blocked for more than 143 seconds.
Not tainted 5.17.0-rc5-syzkaller-00041-g73878e5eb1bd #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:28624 pid: 8915 ppid: 3608 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4995 [inline]
__schedule+0x926/0x1080 kernel/sched/core.c:6304
schedule+0x12b/0x1f0 kernel/sched/core.c:6377
rwsem_down_write_slowpath+0xdb7/0x1480 kernel/locking/rwsem.c:1142
__down_write_common kernel/locking/rwsem.c:1259 [inline]
__down_write kernel/locking/rwsem.c:1268 [inline]
down_write+0x163/0x170 kernel/locking/rwsem.c:1515
inode_lock include/linux/fs.h:777 [inline]
chown_common+0x4fd/0x820 fs/open.c:677
do_fchownat+0x165/0x240 fs/open.c:711
__do_sys_chown fs/open.c:731 [inline]
__se_sys_chown fs/open.c:729 [inline]
__x64_sys_chown+0x7e/0x90 fs/open.c:729
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fce86c12059
RSP: 002b:00007fce85566168 EFLAGS: 00000246 ORIG_RAX: 000000000000005c
RAX: ffffffffffffffda RBX: 00007fce86d25030 RCX: 00007fce86c12059
RDX: 000000000000ee00 RSI: 000000000000ee00 RDI: 0000000020000040
RBP: 00007fce86c6c08d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc579f7f7f R14: 00007fce85566300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/26:
#0: ffffffff8cb1d460 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by khugepaged/33:
3 locks held by kworker/u4:5/1027:
2 locks held by getty/3271:
#0: ffff888023e27098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc90002b662e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6c5/0x1c60 drivers/tty/n_tty.c:2075
1 lock held by kworker/0:3/3316:
#0: ffff8880b9a39798 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x25/0x110 kernel/sched/core.c:489
4 locks held by kworker/1:4/3648:
2 locks held by syz-executor.3/8912:
#0: ffff888019bc6d70 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x2f0 fs/file.c:1034
#1: ffff88804ee707d0 (&sb->s_type->i_mutex_key#23){++++}-{3:3}, at: iterate_dir+0x124/0x640 fs/readdir.c:55
2 locks held by syz-executor.3/8914:
#0: ffff88805d8fe460 (sb_writers#18){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:377
#1: ffff88804ee707d0 (&sb->s_type->i_mutex_key#23){++++}-{3:3}, at: inode_lock include/linux/fs.h:777 [inline]
#1: ffff88804ee707d0 (&sb->s_type->i_mutex_key#23){++++}-{3:3}, at: chown_common+0x4fd/0x820 fs/open.c:677
2 locks held by syz-executor.4/8913:
2 locks held by syz-executor.4/8915:
#0: ffff88807c746460 (sb_writers#18){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:377
#1: ffff88804ee70208 (&sb->s_type->i_mutex_key#23){++++}-{3:3}, at: inode_lock include/linux/fs.h:777 [inline]
#1: ffff88804ee70208 (&sb->s_type->i_mutex_key#23){++++}-{3:3}, at: chown_common+0x4fd/0x820 fs/open.c:677
2 locks held by syz-executor.0/9114:
#0: ffff8880196c6ff0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x2f0 fs/file.c:1034
#1: ffff88804ee70d98 (&sb->s_type->i_mutex_key#23){++++}-{3:3}, at: iterate_dir+0x124/0x640 fs/readdir.c:55
2 locks held by syz-executor.0/9117:
#0: ffff88807aaa4460 (sb_writers#18){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:377
#1: ffff88804ee70d98 (&sb->s_type->i_mutex_key#23){++++}-{3:3}, at: inode_lock include/linux/fs.h:777 [inline]
#1: ffff88804ee70d98 (&sb->s_type->i_mutex_key#23){++++}-{3:3}, at: chown_common+0x4fd/0x820 fs/open.c:677
2 locks held by syz-executor.1/9160:
#0: ffff88801d2aad70 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x2f0 fs/file.c:1034
#1: ffff88804ee71928 (&sb->s_type->i_mutex_key#23){++++}-{3:3}, at: iterate_dir+0x124/0x640 fs/readdir.c:55
2 locks held by syz-executor.1/9161:
#0: ffff88807bc6a460 (sb_writers#18){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:377
#1: ffff88804ee71928 (&sb->s_type->i_mutex_key#23){++++}-{3:3}, at: inode_lock include/linux/fs.h:777 [inline]
#1: ffff88804ee71928 (&sb->s_type->i_mutex_key#23){++++}-{3:3}, at: chown_common+0x4fd/0x820 fs/open.c:677
2 locks held by syz-executor.2/9163:
#0: ffff88807586c5f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x2f0 fs/file.c:1034
#1: ffff88804ed39360 (&sb->s_type->i_mutex_key#23){++++}-{3:3}, at: iterate_dir+0x124/0x640 fs/readdir.c:55
2 locks held by syz-executor.2/9164:
#0: ffff88805e404460 (sb_writers#18){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:377
#1: ffff88804ed39360 (&sb->s_type->i_mutex_key#23){++++}-{3:3}, at: inode_lock include/linux/fs.h:777 [inline]
#1: ffff88804ed39360 (&sb->s_type->i_mutex_key#23){++++}-{3:3}, at: chown_common+0x4fd/0x820 fs/open.c:677
2 locks held by syz-executor.5/9273:
#0: ffff88801dce4870 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x2f0 fs/file.c:1034
#1: ffff88804ed39928 (&sb->s_type->i_mutex_key#23){++++}-{3:3}, at: iterate_dir+0x124/0x640 fs/readdir.c:55
2 locks held by syz-executor.5/9275:
#0: ffff88807b054460 (sb_writers#18){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:377
#1: ffff88804ed39928 (&sb->s_type->i_mutex_key#23){++++}-{3:3}, at: inode_lock include/linux/fs.h:777 [inline]
#1: ffff88804ed39928 (&sb->s_type->i_mutex_key#23){++++}-{3:3}, at: chown_common+0x4fd/0x820 fs/open.c:677
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 26 Comm: khungtaskd Not tainted 5.17.0-rc5-syzkaller-00041-g73878e5eb1bd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1dc/0x2d8 lib/dump_stack.c:106
nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x16a/0x280 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
watchdog+0xc82/0xcd0 kernel/hung_task.c:369
kthread+0x2a3/0x2d0 kernel/kthread.c:377
ret_from_fork+0x1f/0x30
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 3715 Comm: kworker/1:6 Not tainted 5.17.0-rc5-syzkaller-00041-g73878e5eb1bd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events free_obj_work
RIP: 0010:kasan_quarantine_put+0x17/0x230
Code: e8 2e 34 4d 08 31 c0 48 83 c4 08 5b 41 5e c3 cc cc cc cc 41 57 41 56 41 55 41 54 53 50 49 89 fe e8 1e ce ff ff 48 85 c0 74 6b <48> 89 c3 48 c7 04 24 00 00 00 00 9c 8f 04 24 4c 8b 3c 24 fa 41 f7
RSP: 0018:ffffc90002b6fa38 EFLAGS: 00000282
RAX: ffff88801f83e1f8 RBX: ffff88801144f8c0 RCX: 0000000000000000
RDX: ffff88801f83e1f8 RSI: ffff88801f83e1f8 RDI: ffff88801144f8c0
RBP: ffff88801f83e1f8 R08: 000000000000000a R09: ffffc90002b6f750
R10: fffff5200056ded8 R11: 0000000000000000 R12: 0000000000000000
R13: ffffc90002b6fac8 R14: ffff88801144f8c0 R15: ffffc90002b6fad0
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c003a7d000 CR3: 000000005d881000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
kasan_slab_free include/linux/kasan.h:236 [inline]
slab_free_hook mm/slub.c:1728 [inline]
slab_free_freelist_hook+0x12e/0x1a0 mm/slub.c:1754
slab_free mm/slub.c:3509 [inline]
kmem_cache_free+0xb6/0x1c0 mm/slub.c:3526
free_obj_work+0x4d8/0x680 lib/debugobjects.c:338
process_one_work+0x86c/0x1190 kernel/workqueue.c:2307
worker_thread+0xab1/0x1300 kernel/workqueue.c:2454
kthread+0x2a3/0x2d0 kernel/kthread.c:377
ret_from_fork+0x1f/0x30
----------------
Code disassembly (best guess):
0: e8 2e 34 4d 08 callq 0x84d3433
5: 31 c0 xor %eax,%eax
7: 48 83 c4 08 add $0x8,%rsp
b: 5b pop %rbx
c: 41 5e pop %r14
e: c3 retq
f: cc int3
10: cc int3
11: cc int3
12: cc int3
13: 41 57 push %r15
15: 41 56 push %r14
17: 41 55 push %r13
19: 41 54 push %r12
1b: 53 push %rbx
1c: 50 push %rax
1d: 49 89 fe mov %rdi,%r14
20: e8 1e ce ff ff callq 0xffffce43
25: 48 85 c0 test %rax,%rax
28: 74 6b je 0x95
* 2a: 48 89 c3 mov %rax,%rbx <-- trapping instruction
2d: 48 c7 04 24 00 00 00 movq $0x0,(%rsp)
34: 00
35: 9c pushfq
36: 8f 04 24 popq (%rsp)
39: 4c 8b 3c 24 mov (%rsp),%r15
3d: fa cli
3e: 41 rex.B
3f: f7 .byte 0xf7