INFO: task syz.4.2344:17449 blocked for more than 143 seconds.
Not tainted 6.13.0-rc6-syzkaller-00006-g5428dc1906dd #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.2344 state:D stack:28416 pid:17449 tgid:17448 ppid:16517 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0xe58/0x5ad0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1084
__down_read_common kernel/locking/rwsem.c:1248 [inline]
__down_read kernel/locking/rwsem.c:1261 [inline]
down_read+0x124/0x330 kernel/locking/rwsem.c:1526
__super_lock fs/super.c:58 [inline]
super_lock+0x31a/0x3f0 fs/super.c:120
super_lock_shared fs/super.c:139 [inline]
iterate_supers+0xb9/0x240 fs/super.c:931
ksys_sync+0x8a/0x150 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+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f062df85d29
RSP: 002b:00007f062edfd038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f062e175fa0 RCX: 00007f062df85d29
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f062e175fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f062e175fa0 R15: 00007fff195d7758
INFO: task syz.8.2365:17598 blocked for more than 143 seconds.
Not tainted 6.13.0-rc6-syzkaller-00006-g5428dc1906dd #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.8.2365 state:D stack:27456 pid:17598 tgid:17593 ppid:16277 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0xe58/0x5ad0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1084
__down_read_common kernel/locking/rwsem.c:1248 [inline]
__down_read kernel/locking/rwsem.c:1261 [inline]
down_read+0x124/0x330 kernel/locking/rwsem.c:1526
__super_lock fs/super.c:58 [inline]
super_lock+0x31a/0x3f0 fs/super.c:120
super_lock_shared fs/super.c:139 [inline]
iterate_supers+0xb9/0x240 fs/super.c:931
ksys_sync+0x8a/0x150 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+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f70cb985d29
RSP: 002b:00007f70cc820038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f70cbb75fa0 RCX: 00007f70cb985d29
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f70cbb75fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f70cbb75fa0 R15: 00007fffcb0b3008
Showing all locks held in the system:
1 lock held by rcu_exp_gp_kthr/19:
1 lock held by khungtaskd/30:
#0: ffffffff8e1bb900 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e1bb900 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e1bb900 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6744
2 locks held by getty/5577:
#0: ffff88803640a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002fde2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
1 lock held by syz-executor/5819:
#0: ffff888066ff80e0 (&type->s_umount_key#68){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline]
#0: ffff888066ff80e0 (&type->s_umount_key#68){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff888066ff80e0 (&type->s_umount_key#68){++++}-{4:4}, at: deactivate_super+0xd6/0x100 fs/super.c:505
3 locks held by kworker/1:4/5863:
3 locks held by kworker/0:7/5907:
2 locks held by kworker/u8:12/8123:
3 locks held by kworker/u8:19/8142:
1 lock held by syz.4.2344/17449:
#0: ffff888066ff80e0 (&type->s_umount_key#68){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline]
#0: ffff888066ff80e0 (&type->s_umount_key#68){++++}-{4:4}, at: super_lock+0x31a/0x3f0 fs/super.c:120
1 lock held by syz.8.2365/17598:
#0: ffff888066ff80e0 (&type->s_umount_key#68){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline]
#0: ffff888066ff80e0 (&type->s_umount_key#68){++++}-{4:4}, at: super_lock+0x31a/0x3f0 fs/super.c:120
2 locks held by kworker/u8:6/18183:
1 lock held by syz.0.2551/19172:
#0: ffffffff8fedcd08 (rtnl_mutex){+.+.}-{4:4}, at: tun_detach drivers/net/tun.c:698 [inline]
#0: ffffffff8fedcd08 (rtnl_mutex){+.+.}-{4:4}, at: tun_chr_close+0x38/0x230 drivers/net/tun.c:3517
1 lock held by syz.3.2566/19280:
#0: ffffffff8fedcd08 (rtnl_mutex){+.+.}-{4:4}, at: tun_detach drivers/net/tun.c:698 [inline]
#0: ffffffff8fedcd08 (rtnl_mutex){+.+.}-{4:4}, at: tun_chr_close+0x38/0x230 drivers/net/tun.c:3517
1 lock held by syz-executor/19429:
#0: ffffffff8e1c7100 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x48/0x700 kernel/rcu/tree.c:4565
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc6-syzkaller-00006-g5428dc1906dd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 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+0xf14/0x1240 kernel/hung_task.c:397
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 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: 19642 Comm: dhcpcd-run-hook Not tainted 6.13.0-rc6-syzkaller-00006-g5428dc1906dd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:lock_release+0x62/0x6f0 kernel/locking/lockdep.c:5857
Code: 03 48 c7 44 24 18 30 44 7b 8d 48 01 d8 48 c7 44 24 20 30 b9 76 81 c7 00 f1 f1 f1 f1 c7 40 04 f1 f1 04 f2 c7 40 08 04 f3 f3 f3 <65> 48 8b 04 25 28 00 00 00 48 89 84 24 88 00 00 00 31 c0 0f 1f 44
RSP: 0018:ffffc90003dbf380 EFLAGS: 00000286
RAX: fffff520007b7e72 RBX: 1ffff920007b7e72 RCX: ffffffff82085663
RDX: ffff8880456b4880 RSI: ffffffff8208563e RDI: ffffffff8e1bb900
RBP: ffff88801d200350 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000004 R12: ffffffff8e1bb900
R13: 0000000000000001 R14: 0000000000000000 R15: ffff88801d200308
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6852ca05e8 CR3: 00000000703b6000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_lock_release include/linux/rcupdate.h:347 [inline]
rcu_read_unlock include/linux/rcupdate.h:880 [inline]
page_ext_put+0x43/0xd0 mm/page_ext.c:550
__reset_page_owner+0x28d/0x400 mm/page_owner.c:300
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_unref_folios+0xa7b/0x14f0 mm/page_alloc.c:2706
folios_put_refs+0x587/0x7b0 mm/swap.c:962
free_pages_and_swap_cache+0x45f/0x510 mm/swap_state.c:335
__tlb_batch_free_encoded_pages+0xf9/0x290 mm/mmu_gather.c:136
tlb_batch_pages_flush mm/mmu_gather.c:149 [inline]
tlb_flush_mmu_free mm/mmu_gather.c:366 [inline]
tlb_flush_mmu mm/mmu_gather.c:373 [inline]
tlb_finish_mmu+0x168/0x7b0 mm/mmu_gather.c:465
exit_mmap+0x3df/0xb20 mm/mmap.c:1685
__mmput+0x12a/0x4c0 kernel/fork.c:1348
mmput+0x62/0x70 kernel/fork.c:1370
exec_mmap fs/exec.c:1018 [inline]
begin_new_exec+0x1524/0x3570 fs/exec.c:1274
load_elf_binary+0x834/0x4ec0 fs/binfmt_elf.c:1002
search_binary_handler fs/exec.c:1748 [inline]
exec_binprm fs/exec.c:1790 [inline]
bprm_execve fs/exec.c:1842 [inline]
bprm_execve+0x703/0x19b0 fs/exec.c:1818
do_execveat_common.isra.0+0x4f1/0x630 fs/exec.c:1949
do_execve fs/exec.c:2023 [inline]
__do_sys_execve fs/exec.c:2099 [inline]
__se_sys_execve fs/exec.c:2094 [inline]
__x64_sys_execve+0x8c/0xb0 fs/exec.c:2094
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6852bedef7
Code: Unable to access opcode bytes at 0x7f6852bedecd.
RSP: 002b:00007fffbf3be9f8 EFLAGS: 00000246 ORIG_RAX: 000000000000003b
RAX: ffffffffffffffda RBX: 00005621c5765be8 RCX: 00007f6852bedef7
RDX: 00005621c5765c08 RSI: 00005621c5765be8 RDI: 00005621c5765c90
RBP: 00005621c5765c90 R08: 00005621c5765c95 R09: 00007fffbf3c1e80
R10: 0000000000000008 R11: 0000000000000246 R12: 00005621c5765c08
R13: 00007f6852d9b904 R14: 00005621c5765c08 R15: 0000000000000000