INFO: task khugepaged:37 blocked for more than 143 seconds.
Not tainted 6.10.0-rc7-next-20240712-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:khugepaged state:D stack:26192 pid:37 tgid:37 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5239 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6603
__schedule_loop kernel/sched/core.c:6680 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6695
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752
rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write+0x1d7/0x220 kernel/locking/rwsem.c:1580
mmap_write_lock include/linux/mmap_lock.h:106 [inline]
collapse_huge_page mm/khugepaged.c:1152 [inline]
hpage_collapse_scan_pmd+0x24ea/0x4dc0 mm/khugepaged.c:1419
khugepaged_scan_mm_slot mm/khugepaged.c:2427 [inline]
khugepaged_do_scan mm/khugepaged.c:2514 [inline]
khugepaged+0xbe6/0x1dc0 mm/khugepaged.c:2570
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INFO: task syz.3.2842:16735 blocked for more than 143 seconds.
Not tainted 6.10.0-rc7-next-20240712-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.2842 state:D stack:25008 pid:16735 tgid:16734 ppid:12322 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5239 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6603
__schedule_loop kernel/sched/core.c:6680 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6695
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752
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
mmap_read_lock+0x1c/0x60 include/linux/mmap_lock.h:144
unmap_single_vma+0x2a0/0x330 mm/memory.c:1832
unmap_vmas+0x3cc/0x5f0 mm/memory.c:1904
exit_mmap+0x264/0xc80 mm/mmap.c:3412
__mmput+0x115/0x390 kernel/fork.c:1347
exit_mm+0x220/0x310 kernel/exit.c:571
do_exit+0x9b2/0x27f0 kernel/exit.c:869
do_group_exit+0x207/0x2c0 kernel/exit.c:1031
get_signal+0x16a1/0x1740 kernel/signal.c:2917
arch_do_signal_or_restart+0x96/0x830 arch/x86/kernel/signal.c:310
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+0xc9/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1690775bd9
RSP: 002b:00007f169151f0f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f1690903f68 RCX: 00007f1690775bd9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f1690903f68
RBP: 00007f1690903f60 R08: 00007f169151f6c0 R09: 00007f169151f6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1690903f6c
R13: 000000000000000b R14: 00007fffcdf01980 R15: 00007fffcdf01a68
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.10.0-rc7-next-20240712-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
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+0xfee/0x1030 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144
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: 23266 Comm: syz-executor Not tainted 6.10.0-rc7-next-20240712-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:236 [inline]
RIP: 0010:__sanitizer_cov_trace_switch+0xba/0x120 kernel/kcov.c:341
Code: 48 ff c2 49 39 d2 74 71 4c 8b 74 d6 10 65 8b 05 34 06 70 7e a9 00 01 ff 00 74 11 a9 00 01 00 00 74 de 41 83 bb 1c 16 00 00 00 <74> d4 41 8b 83 f8 15 00 00 83 f8 03 75 c8 49 8b 8b 00 16 00 00 45
RSP: 0018:ffffc900000076a0 EFLAGS: 00000246
RAX: 0000000000000102 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8e1a3320 RDI: 0000000000000000
RBP: ffffffff903f980c R08: 0000000000000005 R09: ffffffff814120bf
R10: 0000000000000003 R11: ffff88806847bc00 R12: ffffc90000007bb0
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff92000000ef4
FS: 0000555593fe4500(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f64300cfd38 CR3: 000000007019e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
unwind_next_frame+0x196f/0x2a00 arch/x86/kernel/unwind_orc.c:641
arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
poison_slab_object+0xe0/0x150 mm/kasan/common.c:240
__kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2252 [inline]
slab_free mm/slub.c:4473 [inline]
kmem_cache_free+0x145/0x350 mm/slub.c:4548
rcu_do_batch kernel/rcu/tree.c:2569 [inline]
rcu_core+0xafd/0x1830 kernel/rcu/tree.c:2843
handle_softirqs+0x2c4/0x970 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_flush_all+0x9f7/0xf50 kernel/printk/printk.c:3103
Code: 20 00 90 0f 0b 90 e9 f3 f9 ff ff e8 c3 1b 20 00 e8 7e 56 20 0a 4d 85 f6 74 c0 e8 b4 1b 20 00 fb 49 bd 00 00 00 00 00 fc ff df <43> 80 3c 2f 00 48 8b 5c 24 30 74 08 48 89 df e8 d5 a1 87 00 4c 8b
RSP: 0018:ffffc9000d14f6a0 EFLAGS: 00000293
RAX: ffffffff8173af3c RBX: 0000000000000000 RCX: ffff88806847bc00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000d14f830 R08: ffffffff8173aee3 R09: 1ffffffff1f5ffad
R10: dffffc0000000000 R11: fffffbfff1f5ffae R12: ffffffff8eb30c00
R13: dffffc0000000000 R14: 0000000000000200 R15: 1ffffffff1d6618b
console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3173
vprintk_emit+0x7a1/0x900 kernel/printk/printk.c:2423
_printk+0xd5/0x120 kernel/printk/printk.c:2450
__xfs_printk fs/xfs/xfs_message.c:24 [inline]
xfs_printk_level+0x1ca/0x320 fs/xfs/xfs_message.c:44
xfs_fs_put_super+0x55/0x150 fs/xfs/xfs_super.c:1143
generic_shutdown_super+0x136/0x2d0 fs/super.c:642
kill_block_super+0x44/0x90 fs/super.c:1685
xfs_kill_sb+0x15/0x50 fs/xfs/xfs_super.c:2045
deactivate_locked_super+0xc4/0x130 fs/super.c:473
cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1372
task_work_run+0x24f/0x310 kernel/task_work.c:222
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [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+0x168/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4e75f76f07
Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffe89120838 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f4e75f76f07
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe891208f0
RBP: 00007ffe891208f0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffe891219b0
R13: 00007f4e75fe3515 R14: 0000000000088b2b R15: 0000000000088269