INFO: task syz-executor:5824 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:21320 pid:5824 tgid:5824 ppid:1 task_flags:0x400140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5325 [inline]
__schedule+0x1798/0x4cc0 kernel/sched/core.c:6929
__schedule_loop kernel/sched/core.c:7011 [inline]
schedule+0x165/0x360 kernel/sched/core.c:7026
jfs_flush_journal+0x716/0xed0 fs/jfs/jfs_logmgr.c:1563
jfs_umount+0x178/0x3c0 fs/jfs/jfs_umount.c:58
jfs_put_super+0x8c/0x190 fs/jfs/super.c:194
generic_shutdown_super+0x135/0x2c0 fs/super.c:642
kill_block_super+0x44/0x90 fs/super.c:1722
deactivate_locked_super+0xbc/0x130 fs/super.c:473
cleanup_mnt+0x425/0x4c0 fs/namespace.c:1327
task_work_run+0x1d4/0x260 kernel/task_work.c:227
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop+0xe9/0x130 kernel/entry/common.c:43
exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
do_syscall_64+0x2bd/0xfa0 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1a563909f7
RSP: 002b:00007ffd82110318 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f1a56411d7d RCX: 00007f1a563909f7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd821103d0
RBP: 00007ffd821103d0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffd82111460
R13: 00007f1a56411d7d R14: 00000000000f3bfc R15: 00007ffd821114a0
Showing all locks held in the system:
6 locks held by kworker/u8:0/12:
#0: ffff8880b883a058 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xad/0x140 kernel/sched/core.c:646
#1: ffff8880b8924048 (psi_seq){-.-.}-{0:0}, at: psi_task_switch+0x53/0x880 kernel/sched/psi.c:933
#2: ffff88807af88250 (&devlink->lock_key#13){+.+.}-{4:4}, at: nsim_dev_trap_report_work+0x57/0xb80 drivers/net/netdevsim/dev.c:853
#3: ffffffff8df3d660 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#3: ffffffff8df3d660 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline]
#3: ffffffff8df3d660 (rcu_read_lock){....}-{1:3}, at: ieee80211_sta_active_ibss+0xc3/0x330 net/mac80211/ibss.c:635
#4: ffffffff8df3d660 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#4: ffffffff8df3d660 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline]
#4: ffffffff8df3d660 (rcu_read_lock){....}-{1:3}, at: class_rcu_constructor include/linux/rcupdate.h:1195 [inline]
#4: ffffffff8df3d660 (rcu_read_lock){....}-{1:3}, at: unwind_next_frame+0xa5/0x2390 arch/x86/kernel/unwind_orc.c:479
#5: ffffffff8df3d660 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#5: ffffffff8df3d660 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline]
#5: ffffffff8df3d660 (rcu_read_lock){....}-{1:3}, at: ___pte_offset_map+0x29/0x250 mm/pgtable-generic.c:286
1 lock held by khungtaskd/31:
#0: ffffffff8df3d660 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8df3d660 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline]
#0: ffffffff8df3d660 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6775
2 locks held by getty/5580:
#0: ffff8880337b00a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900036bb2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 drivers/tty/n_tty.c:2222
1 lock held by syz-executor/5824:
#0: ffff88802fe140e0 (&type->s_umount_key#84){++++}-{4:4}, at: __super_lock fs/super.c:57 [inline]
#0: ffff88802fe140e0 (&type->s_umount_key#84){++++}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline]
#0: ffff88802fe140e0 (&type->s_umount_key#84){++++}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:505
1 lock held by syz.4.3289/18921:
#0: ffff88802fe140e0 (&type->s_umount_key#84){++++}-{4:4}, at: __super_lock fs/super.c:59 [inline]
#0: ffff88802fe140e0 (&type->s_umount_key#84){++++}-{4:4}, at: super_lock+0x2a9/0x3b0 fs/super.c:121
2 locks held by syz.5.3326/19102:
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
nmi_cpu_backtrace+0x39e/0x3d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:332 [inline]
watchdog+0xf60/0xfa0 kernel/hung_task.c:495
kthread+0x711/0x8a0 kernel/kthread.c:463
ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 19097 Comm: syz.6.3324 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:instrument_atomic_read include/linux/instrumented.h:-1 [inline]
RIP: 0010:_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
RIP: 0010:folio_test_head include/linux/page-flags.h:844 [inline]
RIP: 0010:folio_test_large include/linux/page-flags.h:865 [inline]
RIP: 0010:folio_mapcount include/linux/mm.h:1206 [inline]
RIP: 0010:zap_present_folio_ptes mm/memory.c:1653 [inline]
RIP: 0010:zap_present_ptes mm/memory.c:1709 [inline]
RIP: 0010:do_zap_pte_range mm/memory.c:1810 [inline]
RIP: 0010:zap_pte_range mm/memory.c:1854 [inline]
RIP: 0010:zap_pmd_range mm/memory.c:1946 [inline]
RIP: 0010:zap_pud_range mm/memory.c:1975 [inline]
RIP: 0010:zap_p4d_range mm/memory.c:1996 [inline]
RIP: 0010:unmap_page_range+0x1fee/0x4370 mm/memory.c:2017
Code: 00 00 00 00 00 fc ff df 44 89 74 24 30 4d 89 fe 4c 8b 7c 24 58 4c 89 ff be 08 00 00 00 e8 4a 9a 1a 00 48 8b 84 24 18 01 00 00 <49> 89 dc 80 3c 18 00 74 08 4c 89 ff e8 c1 97 1a 00 49 8b 1f 48 89
RSP: 0018:ffffc9000461f3a0 EFLAGS: 00000256
RAX: 1ffffd40002545b8 RBX: dffffc0000000000 RCX: ffffffff820b23e6
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffea00012a2dc0
RBP: ffffc9000461f650 R08: ffffea00012a2dc7 R09: 1ffffd40002545b8
R10: dffffc0000000000 R11: fffff940002545b9 R12: dffffc0000000000
R13: 00007fa53c171000 R14: ffffc9000461f860 R15: ffffea00012a2dc0
FS: 0000000000000000(0000) GS:ffff88812623d000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000075cf3000 CR4: 0000000000350ef0
Call Trace:
unmap_single_vma mm/memory.c:2060 [inline]
unmap_vmas+0x399/0x580 mm/memory.c:2104
exit_mmap+0x240/0xb40 mm/mmap.c:1280
__mmput+0x118/0x430 kernel/fork.c:1133
exit_mm+0x1da/0x2c0 kernel/exit.c:582
do_exit+0x648/0x2300 kernel/exit.c:954
do_group_exit+0x21c/0x2d0 kernel/exit.c:1107
get_signal+0x1285/0x1340 kernel/signal.c:3034
arch_do_signal_or_restart+0xa0/0x790 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop+0x72/0x130 kernel/entry/common.c:40
exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
do_syscall_64+0x2bd/0xfa0 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa53cd8f6c9
Code: Unable to access opcode bytes at 0x7fa53cd8f69f.
RSP: 002b:00007fa53dc5b0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007fa53cfe5fa8 RCX: 00007fa53cd8f6c9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fa53cfe5fac
RBP: 00007fa53cfe5fa0 R08: 3fffffffffffffff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa53cfe6038 R14: 00007ffdcbedb560 R15: 00007ffdcbedb648