kmem_cache_node           51KB         51KB
kmem_cache                82KB         82KB
oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=/,mems_allowed=0,global_oom,task_memcg=/syz5,task=syz-executor.5,pid=7777,uid=0
BUG: sleeping function called from invalid context at kernel/locking/mutex.c:577
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 1, name: systemd
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
3 locks held by systemd/1:
 #0: ffff88800f0b67a0 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:832 [inline]
 #0: ffff88800f0b67a0 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_fault+0x151a/0x2130 mm/filemap.c:3137
 #1: ffffffff852791a8 (oom_lock){+.+.}-{3:3}, at: __alloc_pages_may_oom mm/page_alloc.c:4279 [inline]
 #1: ffffffff852791a8 (oom_lock){+.+.}-{3:3}, at: __alloc_pages_slowpath.constprop.0+0xcc9/0x1f10 mm/page_alloc.c:5061
 #2: ffff888017f3d8e0 (&p->alloc_lock){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:354 [inline]
 #2: ffff888017f3d8e0 (&p->alloc_lock){+.+.}-{2:2}, at: task_lock include/linux/sched/task.h:179 [inline]
 #2: ffff888017f3d8e0 (&p->alloc_lock){+.+.}-{2:2}, at: find_lock_task_mm+0xe3/0x2b0 mm/oom_kill.c:144
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 0 PID: 1 Comm: systemd Not tainted 5.16.0-rc6-next-20211224 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x8b/0xb3 lib/dump_stack.c:106
 __might_resched.cold+0x222/0x26b kernel/sched/core.c:9583
 __mutex_lock_common kernel/locking/mutex.c:577 [inline]
 __mutex_lock+0x9e/0x1480 kernel/locking/mutex.c:733
 futex_cleanup_begin kernel/futex/core.c:1058 [inline]
 futex_exit_release+0x2d/0x220 kernel/futex/core.c:1110
 __oom_kill_process+0x373/0xf90 mm/oom_kill.c:893
 oom_kill_process+0xd7/0x5c0 mm/oom_kill.c:1003
 out_of_memory+0x358/0x1460 mm/oom_kill.c:1132
 __alloc_pages_may_oom mm/page_alloc.c:4330 [inline]
 __alloc_pages_slowpath.constprop.0+0x1972/0x1f10 mm/page_alloc.c:5061
 __alloc_pages+0x403/0x4e0 mm/page_alloc.c:5392
 alloc_pages+0x1a0/0x2f0 mm/mempolicy.c:2271
 filemap_alloc_folio mm/filemap.c:1000 [inline]
 __filemap_get_folio+0x65c/0xfd0 mm/filemap.c:2003
 filemap_fault+0x155a/0x2130 mm/filemap.c:3140
 __do_fault+0x113/0x5a0 mm/memory.c:3846
 do_read_fault mm/memory.c:4161 [inline]
 do_fault mm/memory.c:4290 [inline]
 handle_pte_fault mm/memory.c:4548 [inline]
 __handle_mm_fault+0x1325/0x3570 mm/memory.c:4683
 handle_mm_fault+0x2e6/0xa20 mm/memory.c:4781
 do_user_addr_fault+0x54a/0x12a0 arch/x86/mm/fault.c:1397
 handle_page_fault arch/x86/mm/fault.c:1484 [inline]
 exc_page_fault+0xa2/0x1a0 arch/x86/mm/fault.c:1540
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:568
RIP: 0033:0x7f9f69eb77e0
Code: Unable to access opcode bytes at RIP 0x7f9f69eb77b6.
RSP: 002b:00007fffeab361b8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 00007f9f69fecb80 RCX: 0000000000000210
RDX: 0000000000000110 RSI: 00007f9f6be78200 RDI: 00007f9f69fecb80
RBP: 00007f9f6be78210 R08: 0000000000000200 R09: 794850136ef306ab
R10: 3d472de477fac878 R11: 00007f9f6be78210 R12: 0000000000000200
R13: 0000000000000018 R14: 00007f9f6be78200 R15: 0000000000000110
 </TASK>

=============================
[ BUG: Invalid wait context ]
5.16.0-rc6-next-20211224 #1 Tainted: G        W        
-----------------------------
systemd/1 is trying to lock:
ffff888017f3e2f0 (&tsk->futex_exit_mutex){+.+.}-{3:3}, at: futex_cleanup_begin kernel/futex/core.c:1058 [inline]
ffff888017f3e2f0 (&tsk->futex_exit_mutex){+.+.}-{3:3}, at: futex_exit_release+0x2d/0x220 kernel/futex/core.c:1110
other info that might help us debug this:
context-{4:4}
3 locks held by systemd/1:
 #0: ffff88800f0b67a0 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:832 [inline]
 #0: ffff88800f0b67a0 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_fault+0x151a/0x2130 mm/filemap.c:3137
 #1: ffffffff852791a8 (oom_lock){+.+.}-{3:3}, at: __alloc_pages_may_oom mm/page_alloc.c:4279 [inline]
 #1: ffffffff852791a8 (oom_lock){+.+.}-{3:3}, at: __alloc_pages_slowpath.constprop.0+0xcc9/0x1f10 mm/page_alloc.c:5061
 #2: ffff888017f3d8e0 (&p->alloc_lock){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:354 [inline]
 #2: ffff888017f3d8e0 (&p->alloc_lock){+.+.}-{2:2}, at: task_lock include/linux/sched/task.h:179 [inline]
 #2: ffff888017f3d8e0 (&p->alloc_lock){+.+.}-{2:2}, at: find_lock_task_mm+0xe3/0x2b0 mm/oom_kill.c:144
stack backtrace:
CPU: 0 PID: 1 Comm: systemd Tainted: G        W         5.16.0-rc6-next-20211224 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x8b/0xb3 lib/dump_stack.c:106
 print_lock_invalid_wait_context kernel/locking/lockdep.c:4678 [inline]
 check_wait_context kernel/locking/lockdep.c:4739 [inline]
 __lock_acquire.cold+0xc8/0x3b4 kernel/locking/lockdep.c:4977
 lock_acquire kernel/locking/lockdep.c:5639 [inline]
 lock_acquire+0x1a2/0x4d0 kernel/locking/lockdep.c:5604
 __mutex_lock_common kernel/locking/mutex.c:600 [inline]
 __mutex_lock+0x136/0x1480 kernel/locking/mutex.c:733
 futex_cleanup_begin kernel/futex/core.c:1058 [inline]
 futex_exit_release+0x2d/0x220 kernel/futex/core.c:1110
 __oom_kill_process+0x373/0xf90 mm/oom_kill.c:893
 oom_kill_process+0xd7/0x5c0 mm/oom_kill.c:1003
 out_of_memory+0x358/0x1460 mm/oom_kill.c:1132
 __alloc_pages_may_oom mm/page_alloc.c:4330 [inline]
 __alloc_pages_slowpath.constprop.0+0x1972/0x1f10 mm/page_alloc.c:5061
 __alloc_pages+0x403/0x4e0 mm/page_alloc.c:5392
 alloc_pages+0x1a0/0x2f0 mm/mempolicy.c:2271
 filemap_alloc_folio mm/filemap.c:1000 [inline]
 __filemap_get_folio+0x65c/0xfd0 mm/filemap.c:2003
 filemap_fault+0x155a/0x2130 mm/filemap.c:3140
 __do_fault+0x113/0x5a0 mm/memory.c:3846
 do_read_fault mm/memory.c:4161 [inline]
 do_fault mm/memory.c:4290 [inline]
 handle_pte_fault mm/memory.c:4548 [inline]
 __handle_mm_fault+0x1325/0x3570 mm/memory.c:4683
 handle_mm_fault+0x2e6/0xa20 mm/memory.c:4781
 do_user_addr_fault+0x54a/0x12a0 arch/x86/mm/fault.c:1397
 handle_page_fault arch/x86/mm/fault.c:1484 [inline]
 exc_page_fault+0xa2/0x1a0 arch/x86/mm/fault.c:1540
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:568
RIP: 0033:0x7f9f69eb77e0
Code: Unable to access opcode bytes at RIP 0x7f9f69eb77b6.
RSP: 002b:00007fffeab361b8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 00007f9f69fecb80 RCX: 0000000000000210
RDX: 0000000000000110 RSI: 00007f9f6be78200 RDI: 00007f9f69fecb80
RBP: 00007f9f6be78210 R08: 0000000000000200 R09: 794850136ef306ab
R10: 3d472de477fac878 R11: 00007f9f6be78210 R12: 0000000000000200
R13: 0000000000000018 R14: 00007f9f6be78200 R15: 0000000000000110
 </TASK>
Out of memory: Killed process 7777 (syz-executor.5) total-vm:93676kB, anon-rss:16844kB, file-rss:34820kB, shmem-rss:0kB, UID:0 pgtables:168kB oom_score_adj:1000
oom_reaper: reaped process 7777 (syz-executor.5), now anon-rss:0kB, file-rss:34816kB, shmem-rss:0kB