INFO: task syz-executor137:5275 blocked for more than 143 seconds.
Not tainted 6.11.0-rc7-syzkaller-00020-g8d8d276ba2fb #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor137 state:D stack:28848 pid:5275 tgid:5263 ppid:5257 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x705/0xa40 kernel/locking/rwsem.c:1528
inode_lock_shared include/linux/fs.h:810 [inline]
lookup_slow+0x45/0x70 fs/namei.c:1734
walk_component+0x2e1/0x410 fs/namei.c:2039
lookup_last fs/namei.c:2542 [inline]
path_lookupat+0x16f/0x450 fs/namei.c:2566
filename_lookup+0x256/0x610 fs/namei.c:2595
user_path_at+0x3a/0x60 fs/namei.c:3002
do_mount fs/namespace.c:3809 [inline]
__do_sys_mount fs/namespace.c:4020 [inline]
__se_sys_mount+0x297/0x3c0 fs/namespace.c:3997
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: 0033:0x7fe352038dc9
RSP: 002b:00007fe351fcd228 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fe3520ca6b8 RCX: 00007fe352038dc9
RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000000
RBP: 00007fe3520ca6b0 R08: 0000000000000000 R09: 00007fe351fcd6c0
R10: 0000000000001000 R11: 0000000000000246 R12: 00007fe3520ca6bc
R13: 00007fe35208d160 R14: 0030656c69662f2e R15: 00007ffeee3055a8
INFO: task syz-executor137:5279 blocked for more than 144 seconds.
Not tainted 6.11.0-rc7-syzkaller-00020-g8d8d276ba2fb #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor137 state:D stack:28504 pid:5279 tgid:5264 ppid:5258 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x705/0xa40 kernel/locking/rwsem.c:1528
inode_lock_shared include/linux/fs.h:810 [inline]
lookup_slow+0x45/0x70 fs/namei.c:1734
walk_component+0x2e1/0x410 fs/namei.c:2039
lookup_last fs/namei.c:2542 [inline]
path_lookupat+0x16f/0x450 fs/namei.c:2566
filename_lookup+0x256/0x610 fs/namei.c:2595
user_path_at+0x3a/0x60 fs/namei.c:3002
do_mount fs/namespace.c:3809 [inline]
__do_sys_mount fs/namespace.c:4020 [inline]
__se_sys_mount+0x297/0x3c0 fs/namespace.c:3997
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: 0033:0x7fe352038dc9
RSP: 002b:00007fe351fcd228 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fe3520ca6b8 RCX: 00007fe352038dc9
RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000000
RBP: 00007fe3520ca6b0 R08: 0000000000000000 R09: 00007fe351fcd6c0
R10: 0000000000001000 R11: 0000000000000246 R12: 00007fe3520ca6bc
R13: 00007fe35208d160 R14: 0030656c69662f2e R15: 00007ffeee3055a8
INFO: task syz-executor137:5278 blocked for more than 145 seconds.
Not tainted 6.11.0-rc7-syzkaller-00020-g8d8d276ba2fb #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor137 state:D stack:28848 pid:5278 tgid:5265 ppid:5259 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x705/0xa40 kernel/locking/rwsem.c:1528
inode_lock_shared include/linux/fs.h:810 [inline]
lookup_slow+0x45/0x70 fs/namei.c:1734
walk_component+0x2e1/0x410 fs/namei.c:2039
lookup_last fs/namei.c:2542 [inline]
path_lookupat+0x16f/0x450 fs/namei.c:2566
filename_lookup+0x256/0x610 fs/namei.c:2595
user_path_at+0x3a/0x60 fs/namei.c:3002
do_mount fs/namespace.c:3809 [inline]
__do_sys_mount fs/namespace.c:4020 [inline]
__se_sys_mount+0x297/0x3c0 fs/namespace.c:3997
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: 0033:0x7fe352038dc9
RSP: 002b:00007fe351fcd228 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fe3520ca6b8 RCX: 00007fe352038dc9
RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000000
RBP: 00007fe3520ca6b0 R08: 0000000000000000 R09: 00007fe351fcd6c0
R10: 0000000000001000 R11: 0000000000000246 R12: 00007fe3520ca6bc
R13: 00007fe35208d160 R14: 0030656c69662f2e R15: 00007ffeee3055a8
INFO: task syz-executor137:5276 blocked for more than 145 seconds.
Not tainted 6.11.0-rc7-syzkaller-00020-g8d8d276ba2fb #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor137 state:D stack:28216 pid:5276 tgid:5266 ppid:5260 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x705/0xa40 kernel/locking/rwsem.c:1528
inode_lock_shared include/linux/fs.h:810 [inline]
lookup_slow+0x45/0x70 fs/namei.c:1734
walk_component+0x2e1/0x410 fs/namei.c:2039
lookup_last fs/namei.c:2542 [inline]
path_lookupat+0x16f/0x450 fs/namei.c:2566
filename_lookup+0x256/0x610 fs/namei.c:2595
user_path_at+0x3a/0x60 fs/namei.c:3002
do_mount fs/namespace.c:3809 [inline]
__do_sys_mount fs/namespace.c:4020 [inline]
__se_sys_mount+0x297/0x3c0 fs/namespace.c:3997
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: 0033:0x7fe352038dc9
RSP: 002b:00007fe351fcd228 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fe3520ca6b8 RCX: 00007fe352038dc9
RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000000
RBP: 00007fe3520ca6b0 R08: 0000000000000000 R09: 00007fe351fcd6c0
R10: 0000000000001000 R11: 0000000000000246 R12: 00007fe3520ca6bc
R13: 00007fe35208d160 R14: 0030656c69662f2e R15: 00007ffeee3055a8
INFO: task syz-executor137:5277 blocked for more than 146 seconds.
Not tainted 6.11.0-rc7-syzkaller-00020-g8d8d276ba2fb #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor137 state:D stack:28848 pid:5277 tgid:5267 ppid:5261 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x705/0xa40 kernel/locking/rwsem.c:1528
inode_lock_shared include/linux/fs.h:810 [inline]
lookup_slow+0x45/0x70 fs/namei.c:1734
walk_component+0x2e1/0x410 fs/namei.c:2039
lookup_last fs/namei.c:2542 [inline]
path_lookupat+0x16f/0x450 fs/namei.c:2566
filename_lookup+0x256/0x610 fs/namei.c:2595
user_path_at+0x3a/0x60 fs/namei.c:3002
do_mount fs/namespace.c:3809 [inline]
__do_sys_mount fs/namespace.c:4020 [inline]
__se_sys_mount+0x297/0x3c0 fs/namespace.c:3997
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: 0033:0x7fe352038dc9
RSP: 002b:00007fe351fcd228 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fe3520ca6b8 RCX: 00007fe352038dc9
RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000000
RBP: 00007fe3520ca6b0 R08: 0000000000000000 R09: 00007fe351fcd6c0
R10: 0000000000001000 R11: 0000000000000246 R12: 00007fe3520ca6bc
R13: 00007fe35208d160 R14: 0030656c69662f2e R15: 00007ffeee3055a8
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6626
1 lock held by kswapd0/89:
2 locks held by getty/4981:
#0: ffff8880309c60a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000311b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ac/0x1e00 drivers/tty/n_tty.c:2211
1 lock held by syz-executor137/5270:
1 lock held by syz-executor137/5275:
#0: ffff8880768f8c00 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:810 [inline]
#0: ffff8880768f8c00 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1734
1 lock held by syz-executor137/5272:
1 lock held by syz-executor137/5279:
#0: ffff88807fbbc180 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:810 [inline]
#0: ffff88807fbbc180 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1734
5 locks held by syz-executor137/5268:
1 lock held by syz-executor137/5278:
#0: ffff8880768f8180 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:810 [inline]
#0: ffff8880768f8180 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1734
1 lock held by syz-executor137/5269:
1 lock held by syz-executor137/5276:
#0: ffff8880768f9140 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:810 [inline]
#0: ffff8880768f9140 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1734
1 lock held by syz-executor137/5271:
1 lock held by syz-executor137/5277:
#0: ffff8880768f86c0 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:810 [inline]
#0: ffff8880768f86c0 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1734
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc7-syzkaller-00020-g8d8d276ba2fb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
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:223 [inline]
watchdog+0xff4/0x1040 kernel/hung_task.c:379
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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 5270 Comm: syz-executor137 Not tainted 6.11.0-rc7-syzkaller-00020-g8d8d276ba2fb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:__read_once_word_nocheck+0xc/0x20 include/asm-generic/rwonce.h:67
Code: 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 53 48 89 fb e8 77 2d 52 00 48 8b 03 <5b> c3 cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90
RSP: 0018:ffffc90003816cf8 EFLAGS: 00000293
RAX: ffffffff81f46d28 RBX: ffffc900038175e0 RCX: ffff8880319e1e00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffc900038175e0
RBP: 1ffff92000702dbe R08: ffffffff814137ed R09: ffffffff81413746
R10: 0000000000000003 R11: ffff8880319e1e00 R12: ffffc900038175e0
R13: dffffc0000000000 R14: 1ffff92000702dbd R15: 1ffff92000702dbc
FS: 00007fe351fee6c0(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e1a7460680 CR3: 000000002f9e6000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
deref_stack_reg arch/x86/kernel/unwind_orc.c:406 [inline]
unwind_next_frame+0x1356/0x2a00 arch/x86/kernel/unwind_orc.c:585
arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
save_stack+0xfb/0x1f0 mm/page_owner.c:156
__set_page_owner+0x92/0x800 mm/page_owner.c:320
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1500
prep_new_page mm/page_alloc.c:1508 [inline]
get_page_from_freelist+0x2e4c/0x2f10 mm/page_alloc.c:3446
__alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4702
alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2263
alloc_pages_noprof mm/mempolicy.c:2343 [inline]
folio_alloc_noprof+0x128/0x180 mm/mempolicy.c:2350
filemap_alloc_folio_noprof+0xdf/0x500 mm/filemap.c:1008
do_read_cache_folio+0xed/0x820 mm/filemap.c:3753
do_read_cache_page+0x30/0x200 mm/filemap.c:3855
read_mapping_page include/linux/pagemap.h:907 [inline]
dir_get_page fs/sysv/dir.c:64 [inline]
sysv_find_entry+0x1af/0x410 fs/sysv/dir.c:157
sysv_inode_by_name+0x98/0x1f0 fs/sysv/dir.c:374
sysv_lookup+0x6b/0xe0 fs/sysv/namei.c:38
lookup_open fs/namei.c:3556 [inline]
open_last_lookups fs/namei.c:3647 [inline]
path_openat+0x11cc/0x3470 fs/namei.c:3883
do_filp_open+0x235/0x490 fs/namei.c:3913
do_sys_openat2+0x13e/0x1d0 fs/open.c:1416
do_sys_open fs/open.c:1431 [inline]
__do_sys_open fs/open.c:1439 [inline]
__se_sys_open fs/open.c:1435 [inline]
__x64_sys_open+0x225/0x270 fs/open.c:1435
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: 0033:0x7fe352038dc9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe351fee228 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fe3520ca6a8 RCX: 00007fe352038dc9
RDX: 0000000000000000 RSI: 00000000001a18fd RDI: 00000000200000c0
RBP: 00007fe3520ca6a0 R08: 00007fe351fee6c0 R09: 00007fe351fee6c0
R10: 0000000000009e7f R11: 0000000000000246 R12: 00007fe3520ca6ac
R13: 00007fe35208d160 R14: 0030656c69662f2e R15: 00007ffeee3055a8