[syzbot] [mm?] WARNING in va_alloc

[syzbot] [mm?] WARNING in va_alloc

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit:    11028ab62899 Merge tag 'probes-fixes-v7.2-rc5' of git://gi..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=16efd632580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=c05be6c9b0d36cb9
dashboard link: https://syzkaller.appspot.com/bug?extid=61c997e6be1d9bb300ba
compiler:       Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-11028ab6.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/511647651d7f/vmlinux-11028ab6.xz
kernel image: https://storage.googleapis.com/syzbot-assets/1c76180d0109/bzImage-11028ab6.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+61c997e6be1d9bb300ba@syzkaller.appspotmail.com

FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 1, space 0, times 977
CPU: 0 UID: 0 PID: 5320 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 fail_dump lib/fault-inject.c:73 [inline]
 should_fail_ex+0x40c/0x560 lib/fault-inject.c:174
 should_failslab+0xa8/0x100 mm/failslab.c:46
 slab_pre_alloc_hook mm/slub.c:4539 [inline]
 slab_alloc_node mm/slub.c:4897 [inline]
 kmem_cache_alloc_node_noprof+0xb3/0x610 mm/slub.c:4989
 preload_this_cpu_lock+0x49/0xc0 mm/vmalloc.c:1902
 alloc_vmap_area+0x3c3/0x1420 mm/vmalloc.c:2072
 __get_vm_area_node+0x1f2/0x300 mm/vmalloc.c:3226
 __vmalloc_node_range_noprof+0x358/0x1730 mm/vmalloc.c:4042
 __vmalloc_node_noprof+0xc2/0x100 mm/vmalloc.c:4143
 alloc_thread_stack_node kernel/fork.c:359 [inline]
 dup_task_struct+0x2a0/0x8e0 kernel/fork.c:929
 copy_process+0x820/0x4390 kernel/fork.c:2115
 kernel_clone+0x2d7/0x940 kernel/fork.c:2748
 __do_sys_clone3 kernel/fork.c:3050 [inline]
 __se_sys_clone3+0x33c/0x360 kernel/fork.c:3029
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9d8f39ed89
Code: 90 b8 01 00 00 00 b9 01 00 00 00 eb ec 0f 1f 40 00 b8 ea ff ff ff 48 85 ff 74 28 48 85 d2 74 23 49 89 c8 b8 b3 01 00 00 0f 05 <48> 85 c0 7c 14 74 01 c3 31 ed 4c 89 c7 ff d2 48 89 c7 b8 3c 00 00
RSP: 002b:00007fffcf746358 EFLAGS: 00000202 ORIG_RAX: 00000000000001b3
RAX: ffffffffffffffda RBX: 00007f9d8f35a320 RCX: 00007f9d8f39ed89
RDX: 00007f9d8f35a320 RSI: 0000000000000058 RDI: 00007fffcf7463b0
RBP: 00007f9d902776c0 R08: 00007f9d902776c0 R09: 00007fffcf746497
R10: 0000000000000008 R11: 0000000000000202 R12: ffffffffffffffe8
R13: 000000000000006e R14: 00007fffcf7463b0 R15: 00007fffcf746498
 </TASK>
------------[ cut here ]------------
ret
WARNING: mm/vmalloc.c:1820 at va_alloc+0xeb/0xec0 mm/vmalloc.c:1820, CPU#0: syz.0.0/5320
Modules linked in:
CPU: 0 UID: 0 PID: 5320 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:va_alloc+0xeb/0xec0 mm/vmalloc.c:1820
Code: 08 4c 89 ef e8 16 98 10 00 4d 8b 7d 00 48 89 df 4c 89 fe e8 97 69 a1 ff 4c 39 fb 76 27 e8 2d 67 a1 ff 49 c7 c6 ea ff ff ff 90 <0f> 0b 90 4c 89 f0 48 83 c4 58 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc
RSP: 0018:ffffc9000f5e74b0 EFLAGS: 00010293
RAX: ffffffff8225caea RBX: ffffc9000f679000 RCX: ffff88801fae2540
RDX: 0000000000000000 RSI: ffffffff8c4bed60 RDI: ffffffff8c4bed20
RBP: ffff88803f07ef08 R08: 00000000ffffffff R09: 1ffffffff1d94962
R10: dffffc0000000000 R11: fffffbfff1d94963 R12: 1ffff11007e0fde1
R13: ffffc9000f670000 R14: fffffffffffffff4 R15: 0000000000000000
FS:  000055557c363540(0000) GS:ffff88808c543000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9d90277d58 CR3: 0000000012236000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 __alloc_vmap_area mm/vmalloc.c:1855 [inline]
 alloc_vmap_area+0x907/0x1420 mm/vmalloc.c:2073
 __get_vm_area_node+0x1f2/0x300 mm/vmalloc.c:3226
 __vmalloc_node_range_noprof+0x358/0x1730 mm/vmalloc.c:4042
 __vmalloc_node_noprof+0xc2/0x100 mm/vmalloc.c:4143
 alloc_thread_stack_node kernel/fork.c:359 [inline]
 dup_task_struct+0x2a0/0x8e0 kernel/fork.c:929
 copy_process+0x820/0x4390 kernel/fork.c:2115
 kernel_clone+0x2d7/0x940 kernel/fork.c:2748
 __do_sys_clone3 kernel/fork.c:3050 [inline]
 __se_sys_clone3+0x33c/0x360 kernel/fork.c:3029
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9d8f39ed89
Code: 90 b8 01 00 00 00 b9 01 00 00 00 eb ec 0f 1f 40 00 b8 ea ff ff ff 48 85 ff 74 28 48 85 d2 74 23 49 89 c8 b8 b3 01 00 00 0f 05 <48> 85 c0 7c 14 74 01 c3 31 ed 4c 89 c7 ff d2 48 89 c7 b8 3c 00 00
RSP: 002b:00007fffcf746358 EFLAGS: 00000202 ORIG_RAX: 00000000000001b3
RAX: ffffffffffffffda RBX: 00007f9d8f35a320 RCX: 00007f9d8f39ed89
RDX: 00007f9d8f35a320 RSI: 0000000000000058 RDI: 00007fffcf7463b0
RBP: 00007f9d902776c0 R08: 00007f9d902776c0 R09: 00007fffcf746497
R10: 0000000000000008 R11: 0000000000000202 R12: ffffffffffffffe8
R13: 000000000000006e R14: 00007fffcf7463b0 R15: 00007fffcf746498
 </TASK>


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