kasan_slab_alloc include/linux/kasan.h:253 [inline]
 slab_post_alloc_hook mm/slub.c:4501 [inline]
 slab_alloc_node mm/slub.c:4830 [inline]
 kmem_cache_alloc_node_noprof+0x384/0x690 mm/slub.c:4882
 __alloc_skb+0x1d0/0x7d0 net/core/skbuff.c:702
 alloc_skb include/linux/skbuff.h:1383 [inline]
 alloc_skb_with_frags+0xca/0x890 net/core/skbuff.c:6750
 sock_alloc_send_pskb+0x878/0x990 net/core/sock.c:2995
 unix_dgram_sendmsg+0x460/0x18e0 net/unix/af_unix.c:2125
 sock_sendmsg_nosec+0x18f/0x1d0 net/socket.c:737
 __sock_sendmsg net/socket.c:752 [inline]
 __sys_sendto+0x3ff/0x590 net/socket.c:2221
 __do_sys_sendto net/socket.c:2228 [inline]
 __se_sys_sendto net/socket.c:2224 [inline]
 __x64_sys_sendto+0xde/0x100 net/socket.c:2224
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
------------[ cut here ]------------
kernel BUG at mm/filemap.c:859!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 23147 Comm: syz.2.5052 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:__filemap_add_folio+0x11bc/0x1350 mm/filemap.c:858
Code: 57 c5 ff 4c 89 e7 48 c7 c6 e0 a5 d7 8b e8 ec 83 27 ff 90 0f 0b e8 54 57 c5 ff 4c 89 e7 48 c7 c6 80 9a d7 8b e8 d5 83 27 ff 90 <0f> 0b e8 3d 57 c5 ff 4c 89 e7 48 c7 c6 e0 a5 d7 8b e8 be 83 27 ff
RSP: 0018:ffffc9000589f5c0 EFLAGS: 00010246
RAX: 0d841a29c0943a00 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8e01559f RDI: 00000000ffffffff
RBP: ffffc9000589f740 R08: ffffffff9033c9b7 R09: 1ffffffff2067936
R10: dffffc0000000000 R11: fffffbfff2067937 R12: ffffea000167f440
R13: dffffc0000000000 R14: ffffea000167f448 R15: 0000000000000002
FS:  00007f15d60926c0(0000) GS:ffff888124fff000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000003c0 CR3: 000000004d114000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000000c DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 filemap_add_folio+0x264/0x530 mm/filemap.c:966
 ra_alloc_folio mm/readahead.c:456 [inline]
 page_cache_ra_order+0x6b5/0xeb0 mm/readahead.c:515
 do_sync_mmap_readahead+0x6ad/0x8e0 mm/filemap.c:3405
 filemap_fault+0x6e2/0x1320 mm/filemap.c:3554
 __do_fault+0x138/0x390 mm/memory.c:5364
 do_read_fault mm/memory.c:5799 [inline]
 do_fault mm/memory.c:5933 [inline]
 do_pte_missing+0x228f/0x3750 mm/memory.c:4477
 handle_pte_fault mm/memory.c:6317 [inline]
 __handle_mm_fault mm/memory.c:6455 [inline]
 handle_mm_fault+0x1bec/0x3310 mm/memory.c:6624
 do_user_addr_fault+0xa73/0x1340 arch/x86/mm/fault.c:1334
 handle_page_fault arch/x86/mm/fault.c:1474 [inline]
 exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1527
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7f15d5187521
Code: 00 0f 1f 84 00 00 00 00 00 48 85 f6 74 37 49 89 f0 89 f8 48 89 fa c5 f9 ef c0 25 ff 0f 00 00 3d e0 0f 00 00 0f 87 5f 02 00 00 <c5> fd 74 0f c5 fd d7 c1 48 83 fe 20 76 11 85 c0 74 6d f3 0f bc c0
RSP: 002b:00007f15d6090f48 EFLAGS: 00010283
RAX: 00000000000003c0 RBX: 00007f15d6091014 RCX: 0000000000000000
RDX: 00002000000003c0 RSI: 000000000000000f RDI: 00002000000003c0
RBP: 0000000000000005 R08: 000000000000000f R09: 0000000000000000
R10: 00002000000003c0 R11: 0000000000000286 R12: 00002000000003c0
R13: 00007f15d6090fb0 R14: 00007f15d5416180 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__filemap_add_folio+0x11bc/0x1350 mm/filemap.c:858
Code: 57 c5 ff 4c 89 e7 48 c7 c6 e0 a5 d7 8b e8 ec 83 27 ff 90 0f 0b e8 54 57 c5 ff 4c 89 e7 48 c7 c6 80 9a d7 8b e8 d5 83 27 ff 90 <0f> 0b e8 3d 57 c5 ff 4c 89 e7 48 c7 c6 e0 a5 d7 8b e8 be 83 27 ff
RSP: 0018:ffffc9000589f5c0 EFLAGS: 00010246
RAX: 0d841a29c0943a00 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8e01559f RDI: 00000000ffffffff
RBP: ffffc9000589f740 R08: ffffffff9033c9b7 R09: 1ffffffff2067936
R10: dffffc0000000000 R11: fffffbfff2067937 R12: ffffea000167f440
R13: dffffc0000000000 R14: ffffea000167f448 R15: 0000000000000002
FS:  00007f15d60926c0(0000) GS:ffff888124fff000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000003c0 CR3: 000000004d114000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000000c DR6: 00000000ffff0ff0 DR7: 0000000000000400