INFO: task syz-executor.0:5422 blocked for more than 143 seconds.
Not tainted 6.9.0-syzkaller-12220-g02c438bbfffe #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:25112 pid:5422 tgid:5417 ppid:5102 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x1796/0x49d0 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6837
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common+0x1af/0x200 kernel/locking/rwsem.c:1306
inode_lock_nested include/linux/fs.h:826 [inline]
lock_rename fs/namei.c:3074 [inline]
do_renameat2+0x62c/0x13f0 fs/namei.c:4979
__do_sys_rename fs/namei.c:5091 [inline]
__se_sys_rename fs/namei.c:5089 [inline]
__x64_sys_rename+0x86/0xa0 fs/namei.c:5089
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: 0033:0x7f39a8c7cee9
RSP: 002b:00007f39a9a180c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007f39a8dac050 RCX: 00007f39a8c7cee9
RDX: 0000000000000000 RSI: 0000000020000f40 RDI: 0000000020000600
RBP: 00007f39a8cc949e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f39a8dac050 R15: 00007ffe0adc7ea8
Showing all locks held in the system:
2 locks held by kworker/u8:0/11:
1 lock held by khungtaskd/30:
#0: ffffffff8e333e60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#0: ffffffff8e333e60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#0: ffffffff8e333e60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
3 locks held by kworker/u8:2/35:
1 lock held by kswapd0/88:
2 locks held by klogd/4524:
1 lock held by udevd/4535:
2 locks held by getty/4838:
#0: ffff88802f0090a0 (&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
2 locks held by syz-fuzzer/5076:
3 locks held by syz-fuzzer/5094:
1 lock held by syz-fuzzer/5410:
4 locks held by syz-executor.0/5418:
2 locks held by syz-executor.0/5422:
#0: ffff8880251f4420 (sb_writers#23){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
#1: ffff88805c316ae0 (&type->i_mutex_dir_key#15/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:826 [inline]
#1: ffff88805c316ae0 (&type->i_mutex_dir_key#15/1){+.+.}-{3:3}, at: lock_rename fs/namei.c:3074 [inline]
#1: ffff88805c316ae0 (&type->i_mutex_dir_key#15/1){+.+.}-{3:3}, at: do_renameat2+0x62c/0x13f0 fs/namei.c:4979
2 locks held by syz-executor.4/6803:
3 locks held by syz-executor.3/6854:
2 locks held by rm/7099:
2 locks held by syz-executor.4/7101:
2 locks held by syz-executor.3/7103:
1 lock held by syz-executor.3/7105:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 30 Comm: khungtaskd Not tainted 6.9.0-syzkaller-12220-g02c438bbfffe #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
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:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xfde/0x1020 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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 7101 Comm: syz-executor.4 Not tainted 6.9.0-syzkaller-12220-g02c438bbfffe #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x18/0x70 kernel/kcov.c:207
Code: 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 65 48 8b 0c 25 c0 d4 03 00 65 8b 15 20 c1 6d 7e c2 00 01 ff 00 74 11 f7 c2 00 01 00 00 74 35 83 b9 1c 16 00 00
RSP: 0000:ffffc9000c94e388 EFLAGS: 00000206
RAX: ffffffff8203ca21 RBX: 0000000000000053 RCX: ffff888023531e00
RDX: 0000000080000000 RSI: 0000000000000053 RDI: 0000000000000051
RBP: 0000000000000050 R08: ffffffff8203c941 R09: 1ffffffff1f5817d
R10: dffffc0000000000 R11: ffffffff8203c8a0 R12: ffff88802f53c000
R13: 0000000000000000 R14: dffffc0000000000 R15: ffff88802f062290
FS: 000055555780f480(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555780fda8 CR3: 00000001ab93e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
zs_shrinker_count+0x181/0x200 mm/zsmalloc.c:2033
do_shrink_slab+0x86/0x1160 mm/shrinker.c:382
shrink_slab+0x1094/0x14d0 mm/shrinker.c:662
shrink_node_memcgs mm/vmscan.c:5891 [inline]
shrink_node+0x10ec/0x2a30 mm/vmscan.c:5924
shrink_zones mm/vmscan.c:6168 [inline]
do_try_to_free_pages+0x695/0x1aa0 mm/vmscan.c:6230
try_to_free_pages+0x760/0x1100 mm/vmscan.c:6465
__perform_reclaim mm/page_alloc.c:3859 [inline]
__alloc_pages_direct_reclaim mm/page_alloc.c:3881 [inline]
__alloc_pages_slowpath+0xdc3/0x23d0 mm/page_alloc.c:4287
__alloc_pages_noprof+0x43e/0x6c0 mm/page_alloc.c:4673
alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265
__read_swap_cache_async+0x23f/0x8b0 mm/swap_state.c:470
swap_cluster_readahead+0x676/0x800 mm/swap_state.c:697
swapin_readahead+0x1e0/0x1080 mm/swap_state.c:904
do_swap_page+0x790/0x4600 mm/memory.c:4071
handle_pte_fault+0x641/0x7130 mm/memory.c:5383
__handle_mm_fault mm/memory.c:5523 [inline]
handle_mm_fault+0xfb0/0x19d0 mm/memory.c:5688
do_user_addr_fault arch/x86/mm/fault.c:1389 [inline]
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x2b9/0x8c0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0010:__get_user_8+0x11/0x20 arch/x86/lib/getuser.S:88
Code: ca c3 cc cc cc cc 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 89 c2 48 c1 fa 3f 48 09 d0 0f 01 cb <48> 8b 10 31 c0 0f 01 ca c3 cc cc cc cc 66 90 90 90 90 90 90 90 90
RSP: 0000:ffffc9000c94fd78 EFLAGS: 00050202
RAX: 000055555780fda8 RBX: ffff888023533358 RCX: ffffc9000c94fc03
RDX: 0000000000000000 RSI: ffffffff8bcaca00 RDI: ffffffff8c1f1080
RBP: ffffc9000c94fec0 R08: ffffffff8fac0bef R09: 1ffffffff1f5817d
R10: dffffc0000000000 R11: fffffbfff1f5817e R12: ffffc9000c94fd80
R13: ffffc9000c94ffd8 R14: dffffc0000000000 R15: ffff888023531e00
rseq_get_rseq_cs kernel/rseq.c:161 [inline]
rseq_ip_fixup kernel/rseq.c:281 [inline]
__rseq_handle_notify_resume+0x159/0x14e0 kernel/rseq.c:329
rseq_handle_notify_resume include/linux/rseq.h:38 [inline]
resume_user_mode_work include/linux/resume_user_mode.h:62 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
irqentry_exit_to_user_mode+0xbc/0x280 kernel/entry/common.c:231
exc_page_fault+0x590/0x8c0 arch/x86/mm/fault.c:1542
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f295c8293dc
Code: Unable to access opcode bytes at 0x7f295c8293b2.
RSP: 002b:00007fffd986a788 EFLAGS: 00010206
RAX: 000000110f230000 RBX: 00007f295c9ac018 RCX: 0000000000005858
RDX: ffffffff820c25c4 RSI: 0000000080000000 RDI: ffffffff820c25c4
RBP: 00000000820c204a R08: 0000001b2d120000 R09: 0000000000000aa9
R10: 00000000820c2aad R11: 0000000000000246 R12: 0000000000005858
R13: 0000000000000001 R14: 00007f295c9a0000 R15: ffffffff820c25c4