qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x97/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4180 [inline] slab_alloc_node mm/slub.c:4229 [inline] kmem_cache_alloc_noprof+0x1c1/0x3c0 mm/slub.c:4236 getname_flags+0xb8/0x540 fs/namei.c:146 getname include/linux/fs.h:2918 [inline] __do_sys_unlink fs/namei.c:4696 [inline] __se_sys_unlink fs/namei.c:4694 [inline] __x64_sys_unlink+0x3a/0x50 fs/namei.c:4694 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f ------------[ cut here ]------------ kernel BUG at mm/filemap.c:868! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 19337 Comm: syz.7.3921 Not tainted 6.16.0-syzkaller-11489-gd2eedaa3909b #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:__filemap_add_folio+0x11ad/0x12f0 mm/filemap.c:867 Code: 52 c9 ff 4c 89 e7 48 c7 c6 20 3c 94 8b e8 2b a3 31 ff 90 0f 0b e8 43 52 c9 ff 4c 89 e7 48 c7 c6 00 33 94 8b e8 14 a3 31 ff 90 <0f> 0b e8 2c 52 c9 ff 4c 89 e7 48 c7 c6 20 3c 94 8b e8 fd a2 31 ff RSP: 0018:ffffc90003cff140 EFLAGS: 00010246 RAX: 58d44b9ad1b7e100 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000007 RSI: ffffffff8d9b167f RDI: 00000000ffffffff RBP: ffffc90003cff2b0 R08: ffffffff8fa33037 R09: 1ffffffff1f46606 R10: dffffc0000000000 R11: fffffbfff1f46607 R12: ffffea0001855a80 R13: dffffc0000000000 R14: ffffea0001855a88 R15: 0000000000000004 FS: 00007f08e9b746c0(0000) GS:ffff888125c28000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055558c006808 CR3: 000000004f0f6000 CR4: 0000000000350ef0 Call Trace: filemap_add_folio+0xd5/0x270 mm/filemap.c:969 ra_alloc_folio mm/readahead.c:448 [inline] page_cache_ra_order+0x643/0xd40 mm/readahead.c:506 do_sync_mmap_readahead+0x25e/0x7a0 mm/filemap.c:-1 filemap_fault+0x62c/0x1200 mm/filemap.c:3445 __do_fault+0x138/0x390 mm/memory.c:5152 do_read_fault mm/memory.c:5573 [inline] do_fault mm/memory.c:5707 [inline] do_pte_missing mm/memory.c:4234 [inline] handle_pte_fault mm/memory.c:6052 [inline] __handle_mm_fault+0x3611/0x5440 mm/memory.c:6195 handle_mm_fault+0x40a/0x8e0 mm/memory.c:6364 do_user_addr_fault+0x764/0x1390 arch/x86/mm/fault.c:1387 handle_page_fault arch/x86/mm/fault.c:1476 [inline] exc_page_fault+0x76/0xf0 arch/x86/mm/fault.c:1532 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 RIP: 0010:fault_in_readable+0x8e/0x130 mm/gup.c:2181 Code: a9 00 00 00 0f 01 cb 0f ae e8 4d 85 f6 40 0f 95 c5 4c 89 ff 4c 89 f6 e8 e0 0d b8 ff 4d 39 f7 0f 97 c0 40 84 c5 74 43 4d 89 f5 <41> 8a 45 00 88 44 24 07 49 81 e5 00 f0 ff ff 4d 8d a5 00 10 00 00 RSP: 0018:ffffc90003cffaa8 EFLAGS: 00050202 RAX: ffffffff82079e01 RBX: 0000000000000240 RCX: ffff8880615f9e00 RDX: 0000000000000002 RSI: 0000200000020000 RDI: 0000200000020240 RBP: dffffc0000000001 R08: ffff8880615f9e00 R09: 0000000000000002 R10: 0000000000000001 R11: 0000000000000002 R12: 00007ffffffff000 R13: 0000200000020000 R14: 0000200000020000 R15: 0000200000020240 fault_in_iov_iter_readable+0x1b4/0x2f0 lib/iov_iter.c:94 generic_perform_write+0x7b5/0x900 mm/filemap.c:4224 shmem_file_write_iter+0xf8/0x120 mm/shmem.c:3499 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x54b/0xa90 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f08e8d8eb69 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f08e9b74038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f08e8fb6080 RCX: 00007f08e8d8eb69 RDX: 000000003af4701e RSI: 0000200000000240 RDI: 0000000000000005 RBP: 00007f08e8e11df1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f08e8fb6080 R15: 00007ffd115f6418 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__filemap_add_folio+0x11ad/0x12f0 mm/filemap.c:867 Code: 52 c9 ff 4c 89 e7 48 c7 c6 20 3c 94 8b e8 2b a3 31 ff 90 0f 0b e8 43 52 c9 ff 4c 89 e7 48 c7 c6 00 33 94 8b e8 14 a3 31 ff 90 <0f> 0b e8 2c 52 c9 ff 4c 89 e7 48 c7 c6 20 3c 94 8b e8 fd a2 31 ff RSP: 0018:ffffc90003cff140 EFLAGS: 00010246 RAX: 58d44b9ad1b7e100 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000007 RSI: ffffffff8d9b167f RDI: 00000000ffffffff RBP: ffffc90003cff2b0 R08: ffffffff8fa33037 R09: 1ffffffff1f46606 R10: dffffc0000000000 R11: fffffbfff1f46607 R12: ffffea0001855a80 R13: dffffc0000000000 R14: ffffea0001855a88 R15: 0000000000000004 FS: 00007f08e9b746c0(0000) GS:ffff888125c28000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055558c006808 CR3: 000000004f0f6000 CR4: 0000000000350ef0 ---------------- Code disassembly (best guess): 0: a9 00 00 00 0f test $0xf000000,%eax 5: 01 cb add %ecx,%ebx 7: 0f ae e8 lfence a: 4d 85 f6 test %r14,%r14 d: 40 0f 95 c5 setne %bpl 11: 4c 89 ff mov %r15,%rdi 14: 4c 89 f6 mov %r14,%rsi 17: e8 e0 0d b8 ff call 0xffb80dfc 1c: 4d 39 f7 cmp %r14,%r15 1f: 0f 97 c0 seta %al 22: 40 84 c5 test %al,%bpl 25: 74 43 je 0x6a 27: 4d 89 f5 mov %r14,%r13 * 2a: 41 8a 45 00 mov 0x0(%r13),%al <-- trapping instruction 2e: 88 44 24 07 mov %al,0x7(%rsp) 32: 49 81 e5 00 f0 ff ff and $0xfffffffffffff000,%r13 39: 4d 8d a5 00 10 00 00 lea 0x1000(%r13),%r12