BUG: TASK stack guard page was hit at ffffc90005b4ffd8 (stack is ffffc90005b50000..ffffc90005b58000) Oops: stack guard page: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 1 UID: 0 PID: 10499 Comm: syz.7.1279 Not tainted 6.13.0-rc7-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:stack_trace_save+0x1a/0xd0 kernel/stacktrace.c:114 Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 b8 00 00 00 00 00 fc ff df 53 89 f6 31 c9 48 83 c4 80 48 89 e3 <48> c7 04 24 b3 8a b5 41 48 c7 44 24 08 63 d2 94 8d 48 c1 eb 03 48 RSP: 0018:ffffc90005b4ffe8 EFLAGS: 00010287 RAX: dffffc0000000000 RBX: ffffc90005b4ffe8 RCX: 0000000000000000 RDX: 0000000000000002 RSI: 0000000000000010 RDI: ffffc90005b50098 RBP: ffff888029dda440 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: dffffc0000000000 R12: ffffc90005b50098 R13: 00000000000d2040 R14: dffffc0000000000 R15: dffffc0000000000 FS: 00007fbb580136c0(0000) GS:ffff88806a700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90005b4ffd8 CR3: 000000002ad5c000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <#DF> save_stack+0x162/0x1f0 mm/page_owner.c:156 __set_page_owner+0x8b/0x560 mm/page_owner.c:320 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1558 prep_new_page mm/page_alloc.c:1566 [inline] get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3476 __alloc_pages_noprof+0x223/0x25b0 mm/page_alloc.c:4753 alloc_pages_mpol_noprof+0x2c9/0x610 mm/mempolicy.c:2269 alloc_slab_page mm/slub.c:2423 [inline] allocate_slab mm/slub.c:2589 [inline] new_slab+0x2c9/0x410 mm/slub.c:2642 ___slab_alloc+0xd7d/0x17a0 mm/slub.c:3830 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3920 __slab_alloc_node mm/slub.c:3995 [inline] slab_alloc_node mm/slub.c:4156 [inline] kmem_cache_alloc_noprof+0xfa/0x3d0 mm/slub.c:4175 p9_tag_alloc+0x9c/0x870 net/9p/client.c:281 p9_client_prepare_req+0x19f/0x4d0 net/9p/client.c:644 p9_client_rpc+0x1c3/0xc10 net/9p/client.c:691 p9_client_read_once+0x24f/0x820 net/9p/client.c:1575 p9_client_read+0x13f/0x1b0 net/9p/client.c:1534 v9fs_issue_read+0x115/0x340 fs/9p/vfs_addr.c:76 netfs_retry_read_subrequests fs/netfs/read_retry.c:62 [inline] netfs_retry_reads+0x1512/0x1d40 fs/netfs/read_retry.c:235 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x15a4/0x1d40 fs/netfs/read_retry.c:238 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_dispatch_unbuffered_reads fs/netfs/direct_read.c:103 [inline] netfs_unbuffered_read fs/netfs/direct_read.c:127 [inline] netfs_unbuffered_read_iter_locked+0x12e1/0x19a0 fs/netfs/direct_read.c:221 netfs_unbuffered_read_iter+0xc5/0x100 fs/netfs/direct_read.c:256 v9fs_file_read_iter+0xbf/0x100 fs/9p/vfs_file.c:361 do_iter_readv_writev+0x614/0x7f0 fs/read_write.c:818 vfs_readv+0x4cf/0x890 fs/read_write.c:1011 do_preadv+0x1b1/0x270 fs/read_write.c:1125 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fbb57185d29 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:00007fbb58013038 EFLAGS: 00000246 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00007fbb57375fa0 RCX: 00007fbb57185d29 RDX: 0000000000000006 RSI: 0000000020000500 RDI: 0000000000000003 RBP: 00007fbb57201b08 R08: 000000000000000d R09: 0000000000000000 R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fbb57375fa0 R15: 00007ffc07cdeed8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:stack_trace_save+0x1a/0xd0 kernel/stacktrace.c:114 Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 b8 00 00 00 00 00 fc ff df 53 89 f6 31 c9 48 83 c4 80 48 89 e3 <48> c7 04 24 b3 8a b5 41 48 c7 44 24 08 63 d2 94 8d 48 c1 eb 03 48 RSP: 0018:ffffc90005b4ffe8 EFLAGS: 00010287 RAX: dffffc0000000000 RBX: ffffc90005b4ffe8 RCX: 0000000000000000 RDX: 0000000000000002 RSI: 0000000000000010 RDI: ffffc90005b50098 RBP: ffff888029dda440 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: dffffc0000000000 R12: ffffc90005b50098 R13: 00000000000d2040 R14: dffffc0000000000 R15: dffffc0000000000 FS: 00007fbb580136c0(0000) GS:ffff88806a700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90005b4ffd8 CR3: 000000002ad5c000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 90 nop 1: 90 nop 2: 90 nop 3: 90 nop 4: 90 nop 5: 90 nop 6: 90 nop 7: 90 nop 8: 90 nop 9: 90 nop a: 90 nop b: 90 nop c: 90 nop d: 90 nop e: 90 nop f: 90 nop 10: f3 0f 1e fa endbr64 14: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1b: fc ff df 1e: 53 push %rbx 1f: 89 f6 mov %esi,%esi 21: 31 c9 xor %ecx,%ecx 23: 48 83 c4 80 add $0xffffffffffffff80,%rsp 27: 48 89 e3 mov %rsp,%rbx * 2a: 48 c7 04 24 b3 8a b5 movq $0x41b58ab3,(%rsp) <-- trapping instruction 31: 41 32: 48 c7 44 24 08 63 d2 movq $0xffffffff8d94d263,0x8(%rsp) 39: 94 8d 3b: 48 c1 eb 03 shr $0x3,%rbx 3f: 48 rex.W