INFO: task syz-executor.1:8065 blocked for more than 143 seconds.
Not tainted 6.9.0-rc4-syzkaller-00214-g13a2e429f644 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:27728 pid:8065 tgid:7977 ppid:7393 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x17e8/0x4a50 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6838
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6895
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
bfs_lookup+0x139/0x270 fs/bfs/dir.c:136
__lookup_slow+0x28e/0x3f0 fs/namei.c:1692
lookup_slow+0x53/0x70 fs/namei.c:1709
walk_component fs/namei.c:2004 [inline]
link_path_walk+0x9ea/0xea0 fs/namei.c:2331
path_parentat fs/namei.c:2532 [inline]
__filename_parentat+0x263/0x6f0 fs/namei.c:2556
filename_parentat fs/namei.c:2574 [inline]
filename_create+0xf6/0x540 fs/namei.c:3873
do_mkdirat+0xbd/0x3a0 fs/namei.c:4138
__do_sys_mkdirat fs/namei.c:4161 [inline]
__se_sys_mkdirat fs/namei.c:4159 [inline]
__x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4159
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7872a7dea9
RSP: 002b:00007f787384c0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f7872bac120 RCX: 00007f7872a7dea9
RDX: 00000000000001ff RSI: 0000000020000000 RDI: ffffffffffffff9c
RBP: 00007f7872aca4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f7872bac120 R15: 00007fffc9decce8
INFO: task syz-executor.1:8069 blocked for more than 144 seconds.
Not tainted 6.9.0-rc4-syzkaller-00214-g13a2e429f644 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:26680 pid:8069 tgid:7977 ppid:7393 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x17e8/0x4a50 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6838
d_wait_lookup fs/dcache.c:2449 [inline]
d_alloc_parallel+0xc19/0x1600 fs/dcache.c:2531
__lookup_slow+0x117/0x3f0 fs/namei.c:1677
lookup_slow+0x53/0x70 fs/namei.c:1709
walk_component fs/namei.c:2004 [inline]
link_path_walk+0x9ea/0xea0 fs/namei.c:2331
path_lookupat+0xa9/0x450 fs/namei.c:2484
do_o_path+0x95/0x230 fs/namei.c:3770
path_openat+0x2aa0/0x3240 fs/namei.c:3792
do_filp_open+0x235/0x490 fs/namei.c:3826
do_sys_openat2+0x13e/0x1d0 fs/open.c:1406
do_sys_open fs/open.c:1421 [inline]
__do_sys_openat fs/open.c:1437 [inline]
__se_sys_openat fs/open.c:1432 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1432
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7872a7dea9
RSP: 002b:00007f787382b0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f7872bac1f0 RCX: 00007f7872a7dea9
RDX: 0000000000200002 RSI: 0000000020000000 RDI: ffffffffffffff9c
RBP: 00007f7872aca4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f7872bac1f0 R15: 00007fffc9decce8
Showing all locks held in the system:
4 locks held by kworker/u8:1/11:
1 lock held by khungtaskd/29:
#0: ffffffff8e334d20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#0: ffffffff8e334d20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#0: ffffffff8e334d20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
3 locks held by kworker/u8:5/1098:
#0: ffff888015081148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline]
#0: ffff888015081148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x17c0 kernel/workqueue.c:3335
#1: ffffc90004167d00 ((work_completion)(&map->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline]
#1: ffffc90004167d00 ((work_completion)(&map->work)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x17c0 kernel/workqueue.c:3335
#2: ffffffff8e33a0b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:291 [inline]
#2: ffffffff8e33a0b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x39a/0x820 kernel/rcu/tree_exp.h:939
3 locks held by kworker/u8:7/2466:
2 locks held by getty/4836:
#0: ffff88802a8960a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
3 locks held by syz-executor.2/5672:
2 locks held by syz-executor.1/7979:
2 locks held by syz-executor.1/8064:
#0: ffff88805c5c0168 (&type->i_mutex_dir_key#24){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:805 [inline]
#0: ffff88805c5c0168 (&type->i_mutex_dir_key#24){.+.+}-{3:3}, at: open_last_lookups fs/namei.c:3565 [inline]
#0: ffff88805c5c0168 (&type->i_mutex_dir_key#24){.+.+}-{3:3}, at: path_openat+0x7c4/0x3240 fs/namei.c:3796
#1: ffff88802c98c6d8 (&info->bfs_lock){+.+.}-{3:3}, at: bfs_lookup+0x139/0x270 fs/bfs/dir.c:136
2 locks held by syz-executor.1/8065:
#0: ffff88805c5c0168 (&type->i_mutex_dir_key#24){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:805 [inline]
#0: ffff88805c5c0168 (&type->i_mutex_dir_key#24){.+.+}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1708
#1: ffff88802c98c6d8 (&info->bfs_lock){+.+.}-{3:3}, at: bfs_lookup+0x139/0x270 fs/bfs/dir.c:136
1 lock held by syz-executor.1/8069:
#0: ffff88805c5c0168 (&type->i_mutex_dir_key#24){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:805 [inline]
#0: ffff88805c5c0168 (&type->i_mutex_dir_key#24){.+.+}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1708
2 locks held by syz-executor.0/9352:
2 locks held by syz-executor.0/9401:
#0: ffff88804d030168 (&type->i_mutex_dir_key#24){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:805 [inline]
#0: ffff88804d030168 (&type->i_mutex_dir_key#24){.+.+}-{3:3}, at: open_last_lookups fs/namei.c:3565 [inline]
#0: ffff88804d030168 (&type->i_mutex_dir_key#24){.+.+}-{3:3}, at: path_openat+0x7c4/0x3240 fs/namei.c:3796
#1: ffff88807a3a2cd8 (&info->bfs_lock){+.+.}-{3:3}, at: bfs_lookup+0x139/0x270 fs/bfs/dir.c:136
1 lock held by syz-executor.0/9404:
#0: ffff88804d030168 (&type->i_mutex_dir_key#24){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:805 [inline]
#0: ffff88804d030168 (&type->i_mutex_dir_key#24){.+.+}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1708
2 locks held by syz-executor.0/9405:
#0: ffff88804d030168 (&type->i_mutex_dir_key#24){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:805 [inline]
#0: ffff88804d030168 (&type->i_mutex_dir_key#24){.+.+}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1708
#1: ffff88807a3a2cd8 (&info->bfs_lock){+.+.}-{3:3}, at: bfs_lookup+0x139/0x270 fs/bfs/dir.c:136
2 locks held by syz-executor.2/10172:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.9.0-rc4-syzkaller-00214-g13a2e429f644 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
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:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xfde/0x1020 kernel/hung_task.c:380
kthread+0x2f2/0x390 kernel/kthread.c:388
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
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 PID: 10181 Comm: syz-executor.1 Not tainted 6.9.0-rc4-syzkaller-00214-g13a2e429f644 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:folio_test_swapcache include/linux/page-flags.h:563 [inline]
RIP: 0010:free_swap_cache+0xa2/0x620 mm/swap_state.c:288
Code: 80 7c 2d 00 00 74 08 4c 89 ff e8 c9 4e 09 00 49 8b 1f 41 bc 00 00 08 00 be 00 00 08 00 48 21 de 31 ff e8 41 f1 a4 ff 49 21 dc <75> 0a e8 57 ec a4 ff e9 a4 01 00 00 48 8b 04 24 80 3c 28 00 74 08
RSP: 0000:ffffc90003ee77a0 EFLAGS: 00000206
RAX: 0000000000000000 RBX: 00fffc0000080028 RCX: ffff8880208c1e00
RDX: 0000000000000000 RSI: 0000000000080000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff81f114ff R09: 1ffffd4000185348
R10: dffffc0000000000 R11: fffff94000185349 R12: 0000000000080000
R13: 1ffffd4000185348 R14: ffffea0000c29a48 R15: ffffea0000c29a40
FS: 0000555574640480(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5fb6ad5690 CR3: 000000005e8d6000 CR4: 0000000000350ef0
Call Trace:
wp_page_copy mm/memory.c:3381 [inline]
do_wp_page+0x24f5/0x4fd0 mm/memory.c:3660
handle_pte_fault mm/memory.c:5316 [inline]
__handle_mm_fault+0x264a/0x7240 mm/memory.c:5441
handle_mm_fault+0x3c2/0x8a0 mm/memory.c:5606
do_user_addr_fault arch/x86/mm/fault.c:1362 [inline]
handle_page_fault arch/x86/mm/fault.c:1505 [inline]
exc_page_fault+0x446/0x8e0 arch/x86/mm/fault.c:1563
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f5fb5e36fe1
Code: 00 00 48 83 c4 20 83 fd 20 75 aa 48 8d 3d 55 32 09 00 31 c0 e8 30 16 ff ff 41 57 41 56 41 55 41 54 55 53 48 81 ec 48 02 00 00 05 a8 e6 c9 00 01 e8 73 dd ff ff 48 8b 05 e4 e6 c9 00 31 ff 48
RSP: 002b:00007ffeabb10f90 EFLAGS: 00010206
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000555574640788
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001