INFO: task syz-executor.2:4934 blocked for more than 143 seconds.
Not tainted 5.19.0-rc3-syzkaller-00175-g0a18d802d65c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:28680 pid: 4934 ppid: 3645 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5146 [inline]
__schedule+0xa00/0x4b50 kernel/sched/core.c:6458
schedule+0xd2/0x1f0 kernel/sched/core.c:6530
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6589
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa70/0x1350 kernel/locking/mutex.c:747
do_ip_setsockopt net/ipv4/ip_sockglue.c:946 [inline]
ip_setsockopt+0x1c8/0x3ab0 net/ipv4/ip_sockglue.c:1432
sctp_setsockopt+0x14c/0xa9b0 net/sctp/socket.c:4575
__sys_setsockopt+0x2db/0x6a0 net/socket.c:2254
__do_sys_setsockopt net/socket.c:2265 [inline]
__se_sys_setsockopt net/socket.c:2262 [inline]
__x64_sys_setsockopt+0xba/0x150 net/socket.c:2262
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7eff10289109
RSP: 002b:00007eff113d0168 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007eff1039bf60 RCX: 00007eff10289109
RDX: 0000000000000026 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007eff102e305d R08: 000000000000000c R09: 0000000000000000
R10: 0000000020000040 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcba350eaf R14: 00007eff113d0300 R15: 0000000000022000
INFO: task syz-executor.5:4937 blocked for more than 143 seconds.
Not tainted 5.19.0-rc3-syzkaller-00175-g0a18d802d65c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:29048 pid: 4937 ppid: 3643 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5146 [inline]
__schedule+0xa00/0x4b50 kernel/sched/core.c:6458
schedule+0xd2/0x1f0 kernel/sched/core.c:6530
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6589
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa70/0x1350 kernel/locking/mutex.c:747
br_ioctl_stub+0x94/0x7d0 net/bridge/br_ioctl.c:402
br_ioctl_call+0x5e/0xa0 net/socket.c:1143
sock_ioctl+0x30c/0x640 net/socket.c:1240
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl fs/ioctl.c:856 [inline]
__x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7f3df1489109
RSP: 002b:00007f3df256e168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f3df159bf60 RCX: 00007f3df1489109
RDX: 0000000020000000 RSI: 0000000000008940 RDI: 0000000000000003
RBP: 00007f3df14e305d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd8795d98f R14: 00007f3df256e300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/28:
#0: ffffffff8bd86ba0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6491
3 locks held by kworker/u4:3/47:
#0: ffff8880b9b39ed8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:544
#1: ffff8880b9b277c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x3e7/0x4e0 kernel/sched/psi.c:889
#2: ffff8880b9b28398 (&base->lock){-.-.}-{2:2}, at: __mod_timer+0x60c/0xe30 kernel/time/timer.c:1096
2 locks held by getty/3296:
#0: ffff88814a71f098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90002d0e2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xe50/0x13c0 drivers/tty/n_tty.c:2124
3 locks held by kworker/0:6/3680:
#0: ffff888011865d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888011865d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888011865d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888011865d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff888011865d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff888011865d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260
#1: ffffc90004527da8 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264
#2: ffffffff8d58e828 (rtnl_mutex){+.+.}-{3:3}, at: reg_check_chans_work+0x83/0xe20 net/wireless/reg.c:2461
3 locks held by kworker/1:6/3683:
#0: ffff8881481d3d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff8881481d3d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff8881481d3d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff8881481d3d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff8881481d3d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff8881481d3d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260
#1: ffffc90004557da8 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264
#2: ffffffff8d58e828 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xe/0x20 net/ipv6/addrconf.c:4616
3 locks held by kworker/0:10/4590:
#0: ffff8881481d3d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff8881481d3d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff8881481d3d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff8881481d3d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff8881481d3d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff8881481d3d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260
#1: ffffc90007fd7da8 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264
#2: ffffffff8d58e828 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xe/0x20 net/ipv6/addrconf.c:4616
1 lock held by syz-executor.3/4919:
#0: ffffffff8d58e828 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:697 [inline]
#0: ffffffff8d58e828 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3a/0x180 drivers/net/tun.c:3454
1 lock held by syz-executor.2/4934:
#0: ffffffff8d58e828 (rtnl_mutex){+.+.}-{3:3}, at: do_ip_setsockopt net/ipv4/ip_sockglue.c:946 [inline]
#0: ffffffff8d58e828 (rtnl_mutex){+.+.}-{3:3}, at: ip_setsockopt+0x1c8/0x3ab0 net/ipv4/ip_sockglue.c:1432
2 locks held by syz-executor.5/4937:
#0: ffffffff8d56c328 (br_ioctl_mutex){+.+.}-{3:3}, at: br_ioctl_call+0x3b/0xa0 net/socket.c:1141
#1: ffffffff8d58e828 (rtnl_mutex){+.+.}-{3:3}, at: br_ioctl_stub+0x94/0x7d0 net/bridge/br_ioctl.c:402
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 5.19.0-rc3-syzkaller-00175-g0a18d802d65c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/18/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xc22/0xf90 kernel/hung_task.c:378
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 3677 Comm: kworker/1:3 Not tainted 5.19.0-rc3-syzkaller-00175-g0a18d802d65c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/18/2022
Workqueue: events kfree_rcu_work
RIP: 0010:preempt_latency_start kernel/sched/core.c:5590 [inline]
RIP: 0010:preempt_latency_start kernel/sched/core.c:5585 [inline]
RIP: 0010:preempt_count_add+0x81/0x140 kernel/sched/core.c:5613
Code: 25 7a b0 7e 25 ff ff ff 7f 39 c3 74 03 5b 5d c3 48 8b 5c 24 10 48 89 df e8 7c b0 0c 00 85 c0 75 35 65 48 8b 2c 25 80 6f 02 00 <48> 8d bd 58 14 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1
RSP: 0018:ffffc900044f7a80 EFLAGS: 00000017
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 1ffffffff21e9f30
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff88801baf0000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000a06
R13: ffff88807eda4500 R14: dead000000000100 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3deb3f7990 CR3: 000000003e252000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:109 [inline]
_raw_spin_lock_irqsave+0x1d/0x50 kernel/locking/spinlock.c:162
__debug_check_no_obj_freed lib/debugobjects.c:977 [inline]
debug_check_no_obj_freed+0xc7/0x420 lib/debugobjects.c:1020
slab_free_hook mm/slub.c:1729 [inline]
slab_free_freelist_hook+0xeb/0x1c0 mm/slub.c:1780
slab_free mm/slub.c:3536 [inline]
kmem_cache_free_bulk mm/slub.c:3683 [inline]
kmem_cache_free_bulk+0x2c0/0xb60 mm/slub.c:3670
kfree_bulk include/linux/slab.h:456 [inline]
kfree_rcu_work+0x51c/0xa10 kernel/rcu/tree.c:3370
process_one_work+0x996/0x1610 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
----------------
Code disassembly (best guess), 2 bytes skipped:
0: b0 7e mov $0x7e,%al
2: 25 ff ff ff 7f and $0x7fffffff,%eax
7: 39 c3 cmp %eax,%ebx
9: 74 03 je 0xe
b: 5b pop %rbx
c: 5d pop %rbp
d: c3 retq
e: 48 8b 5c 24 10 mov 0x10(%rsp),%rbx
13: 48 89 df mov %rbx,%rdi
16: e8 7c b0 0c 00 callq 0xcb097
1b: 85 c0 test %eax,%eax
1d: 75 35 jne 0x54
1f: 65 48 8b 2c 25 80 6f mov %gs:0x26f80,%rbp
26: 02 00
* 28: 48 8d bd 58 14 00 00 lea 0x1458(%rbp),%rdi <-- trapping instruction
2f: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
36: fc ff df
39: 48 89 fa mov %rdi,%rdx
3c: 48 rex.W
3d: c1 .byte 0xc1