INFO: task syz.0.2606:17273 blocked for more than 143 seconds.
Not tainted 6.11.0-syzkaller-11624-ge477dba5442c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.2606 state:D stack:28592 pid:17273 tgid:17270 ppid:13479 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0xed6/0x5920 kernel/sched/core.c:6675
__schedule_loop kernel/sched/core.c:6752 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6767
schedule_timeout+0x258/0x2a0 kernel/time/timer.c:2591
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common+0x3e1/0x600 kernel/sched/completion.c:116
wait_for_common kernel/sched/completion.c:127 [inline]
wait_for_completion_state+0x1c/0x40 kernel/sched/completion.c:264
coredump_wait fs/coredump.c:418 [inline]
do_coredump+0x82f/0x4160 fs/coredump.c:575
get_signal+0x237c/0x26d0 kernel/signal.c:2902
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd044b7dff9
RSP: 002b:00007fd045973038 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fd044d36130 RCX: 00007fd044b7dff9
RDX: 0000000000000000 RSI: 00000000000261c2 RDI: 0000000020000000
RBP: 00007fd044bf0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fd044d36130 R15: 00007ffcc68aa8d8
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8ddb73c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8ddb73c0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8ddb73c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6701
2 locks held by getty/4984:
#0: ffff88802dbf70a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
1 lock held by syz.3.1631/12784:
1 lock held by syz.0.2606/17272:
2 locks held by syz.0.3003/19314:
2 locks held by syz.1.3032/19419:
2 locks held by syz.3.3037/19440:
2 locks held by syz.0.3042/19461:
2 locks held by syz.1.3057/19520:
1 lock held by syz.2.3059/19524:
#0: ffffffff8ddc2d38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x282/0x3b0 kernel/rcu/tree_exp.h:297
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-syzkaller-11624-ge477dba5442c #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:223 [inline]
watchdog+0xf0c/0x1240 kernel/hung_task.c:379
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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 19419 Comm: syz.1.3032 Not tainted 6.11.0-syzkaller-11624-ge477dba5442c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:kasan_check_range+0x12/0x1a0 mm/kasan/generic.c:188
Code: 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 50 01 00 00 48 89 f8 41 54 <44> 0f b6 c2 48 01 f0 55 53 0f 82 c6 00 00 00 48 b8 ff ff ff ff ff
RSP: 0018:ffffc90005166480 EFLAGS: 00000002
RAX: ffffffff9697dc40 RBX: 0000000000000029 RCX: ffffffff8168a5fe
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff9697dc40
RBP: ffffc900051665d8 R08: 0000000000000000 R09: fffffbfff2d2fb88
R10: ffffffff9697dc47 R11: 0000000000000000 R12: ffff88806f60bc00
R13: 0000000000000040 R14: 0000000000000006 R15: 1ffff92000a2cc9a
FS: 00007fe711f4e6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000007 CR3: 0000000020eec000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
instrument_atomic_read include/linux/instrumented.h:68 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
hlock_class+0x4e/0x130 kernel/locking/lockdep.c:228
mark_lock+0xb5/0xc60 kernel/locking/lockdep.c:4700
mark_usage kernel/locking/lockdep.c:4635 [inline]
__lock_acquire+0x8ee/0x3ce0 kernel/locking/lockdep.c:5153
lock_acquire kernel/locking/lockdep.c:5822 [inline]
lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5787
__raw_spin_trylock include/linux/spinlock_api_smp.h:90 [inline]
_raw_spin_trylock+0x63/0x80 kernel/locking/spinlock.c:138
spin_trylock include/linux/spinlock.h:361 [inline]
rmqueue_pcplist mm/page_alloc.c:3012 [inline]
rmqueue mm/page_alloc.c:3056 [inline]
get_page_from_freelist+0x371/0x3070 mm/page_alloc.c:3454
__alloc_pages_noprof+0x223/0x25c0 mm/page_alloc.c:4733
alloc_pages_mpol_noprof+0x275/0x610 mm/mempolicy.c:2265
folio_alloc_mpol_noprof+0x36/0xd0 mm/mempolicy.c:2283
shmem_alloc_folio+0x135/0x160 mm/shmem.c:1774
shmem_alloc_and_add_folio+0x48b/0xc00 mm/shmem.c:1813
shmem_get_folio_gfp+0x689/0x1530 mm/shmem.c:2335
shmem_fault+0x200/0xae0 mm/shmem.c:2536
__do_fault+0x10a/0x490 mm/memory.c:4876
do_read_fault mm/memory.c:5282 [inline]
do_fault mm/memory.c:5416 [inline]
do_pte_missing+0xea8/0x3e50 mm/memory.c:3965
handle_pte_fault mm/memory.c:5751 [inline]
__handle_mm_fault+0x100a/0x2a10 mm/memory.c:5894
handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6062
faultin_page mm/gup.c:1187 [inline]
__get_user_pages+0x90f/0x3b90 mm/gup.c:1485
__get_user_pages_locked mm/gup.c:1751 [inline]
get_dump_page+0xfb/0x220 mm/gup.c:2269
dump_user_range+0x135/0x8a0 fs/coredump.c:943
elf_core_dump+0x2766/0x3840 fs/binfmt_elf.c:2121
do_coredump+0x2c42/0x4160 fs/coredump.c:758
get_signal+0x237c/0x26d0 kernel/signal.c:2902
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
irqentry_exit_to_user_mode+0x13f/0x280 kernel/entry/common.c:231
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x35000
Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
RSP: 002b:000000000000000a EFLAGS: 00010202
RAX: 0000000000000000 RBX: 00007fe711335f80 RCX: 00007fe71117dff9
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000020003b46
RBP: 00007fe7111f0296 R08: 0000000000000002 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fe711335f80 R15: 00007fff35d3faa8