Hello,

syzbot found the following issue on:

HEAD commit: 0468be89b3fa Merge tag 'iommu-updates-v6.6' of git://git.k.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13571367a80000 kernel config: https://syzkaller.appspot.com/x/.config?x=39744401c57166fc dashboard link: https://syzkaller.appspot.com/bug?extid=95416f957d84e858b377 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=111c39a8680000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1267d83fa80000

Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-... vmlinux: https://storage.googleapis.com/syzbot-assets/7feba36779de/vmlinux-0468be89.x... kernel image: https://storage.googleapis.com/syzbot-assets/b1cdc0506491/bzImage-0468be89.x...

IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+95416f957d84e858b377@syzkaller.appspotmail.com

------------[ cut here ]------------ WARNING: CPU: 2 PID: 5141 at mm/page_alloc.c:4415 __alloc_pages+0x3ab/0x4a0 mm/page_alloc.c:4415 Modules linked in: CPU: 2 PID: 5141 Comm: syz-executor127 Not tainted 6.5.0-syzkaller-10885-g0468be89b3fa #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:__alloc_pages+0x3ab/0x4a0 mm/page_alloc.c:4415 Code: ff ff 00 0f 84 2f fe ff ff 80 ce 01 e9 27 fe ff ff 83 fe 0a 0f 86 3a fd ff ff 80 3d c9 37 e6 0c 00 75 09 c6 05 c0 37 e6 0c 01 <0f> 0b 45 31 f6 e9 97 fe ff ff e8 b6 10 9e ff 84 c0 0f 85 8a fe ff RSP: 0018:ffffc900030b7a18 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000040cc0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000016 RDI: 0000000000040cc0 RBP: 1ffff92000616f44 R08: 0000000000000005 R09: 0000000000000000 R10: 00000000ffffff1f R11: 0000000000000000 R12: 0000000000000016 R13: 0000000000000000 R14: ffffffff84b4e215 R15: ffff888013722000 FS: 00005555555a4380(0000) GS:ffff88806b800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200001c0 CR3: 000000002accd000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> __alloc_pages_node include/linux/gfp.h:237 [inline] alloc_pages_node include/linux/gfp.h:260 [inline] __kmalloc_large_node+0x87/0x1c0 mm/slab_common.c:1164 __do_kmalloc_node mm/slab_common.c:1011 [inline] __kmalloc.cold+0xb/0xe0 mm/slab_common.c:1036 kmalloc_array include/linux/slab.h:636 [inline] drm_syncobj_array_find+0x35/0x3c0 drivers/gpu/drm/drm_syncobj.c:1246 drm_syncobj_timeline_signal_ioctl+0x21f/0x860 drivers/gpu/drm/drm_syncobj.c:1533 drm_ioctl_kernel+0x280/0x4c0 drivers/gpu/drm/drm_ioctl.c:789 drm_ioctl+0x5cb/0xbf0 drivers/gpu/drm/drm_ioctl.c:892 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7ff62d53f129 Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe7c669ea8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007ffe7c66a078 RCX: 00007ff62d53f129 RDX: 0000000020000500 RSI: 00000000c01864cd RDI: 0000000000000003 RBP: 00007ff62d5b2610 R08: 0023647261632f69 R09: 00007ffe7c66a078 R10: 000000000000001f R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffe7c66a068 R14: 0000000000000001 R15: 0000000000000001 </TASK>

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