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BUG: stack guard page was hit in io_uring_enter

Status: closed as dup on 2024/11/26 22:52
Subsystems: v9fs
[Documentation on labels]
Reported-by: syzbot+f86e49ba96853e315c26@syzkaller.appspotmail.com
First crash: 24d, last: 24d
▶ ▼ Duplicate of
Title Repro Cause bisect Fix bisect Count Last Reported
BUG: stack guard page was hit in sys_open mm v9fs C 10 1d10h 15d
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [v9fs?] BUG: stack guard page was hit in io_uring_enter 1 (2) 2024/11/26 22:52

Sample crash report:
BUG: TASK stack guard page was hit at ffffc90001717fd8 (stack is ffffc90001718000..ffffc90001720000)
Oops: stack guard page: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 3 UID: 0 PID: 8268 Comm: syz.0.692 Not tainted 6.12.0-rc5-syzkaller-00291-g05b92660cdfe #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:unwind_next_frame+0x76/0x20c0 arch/x86/kernel/unwind_orc.c:470
Code: 41 5f c3 cc cc cc cc 49 8d 6d 48 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 00 18 00 00 49 8b 45 48 <48> 89 44 24 08 49 8d 45 38 48 89 c2 48 89 04 24 48 b8 00 00 00 00
RSP: 0018:ffffc90001717fe8 EFLAGS: 00010046
RAX: ffffffff813d7404 RBX: 0000000000000001 RCX: ffffc90001718140
RDX: 1ffff920002e301e RSI: ffff888022fc0000 RDI: ffffc900017180a8
RBP: ffffc900017180f0 R08: 0000000000000001 R09: 0000000000000000
R10: ffffc900017180a8 R11: 0000000000000000 R12: fffff520002e3017
R13: ffffc900017180a8 R14: ffffc900017180a8 R15: ffffc900017180b0
FS:  00007f483b1d36c0(0000) GS:ffff88806a900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc90001717fd8 CR3: 000000004e7f6000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <#DF>
 </#DF>
 <TASK>
 __unwind_start+0x45f/0x7f0 arch/x86/kernel/unwind_orc.c:760
 unwind_start arch/x86/include/asm/unwind.h:64 [inline]
 arch_stack_walk+0x74/0x100 arch/x86/kernel/stacktrace.c:24
 stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 unpoison_slab_object mm/kasan/common.c:319 [inline]
 __kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:345
 kasan_slab_alloc include/linux/kasan.h:247 [inline]
 slab_post_alloc_hook mm/slub.c:4085 [inline]
 slab_alloc_node mm/slub.c:4134 [inline]
 kmem_cache_alloc_noprof+0x121/0x2f0 mm/slub.c:4141
 radix_tree_node_alloc.constprop.0+0x1e8/0x350 lib/radix-tree.c:253
 idr_get_free+0x528/0xa40 lib/radix-tree.c:1506
 idr_alloc_u32+0x191/0x2f0 lib/idr.c:46
 idr_alloc+0xc1/0x130 lib/idr.c:87
 p9_tag_alloc+0x394/0x870 net/9p/client.c:321
 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+0x115/0x310 fs/9p/vfs_addr.c:74
 netfs_retry_read_subrequests fs/netfs/read_retry.c:60 [inline]
 netfs_retry_reads+0x153a/0x1d00 fs/netfs/read_retry.c:232
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235
 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371
 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407
 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+0x12f6/0x19b0 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
 io_iter_do_read io_uring/rw.c:771 [inline]
 __io_read+0x320/0x1190 io_uring/rw.c:865
 io_read+0x1e/0x70 io_uring/rw.c:943
 io_issue_sqe+0x175/0x13d0 io_uring/io_uring.c:1739
 io_queue_sqe io_uring/io_uring.c:1953 [inline]
 io_submit_sqe io_uring/io_uring.c:2209 [inline]
 io_submit_sqes+0x9b4/0x2530 io_uring/io_uring.c:2324
 __do_sys_io_uring_enter+0xc0f/0x1170 io_uring/io_uring.c:3343
 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: 0033:0x7f483a37e719
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:00007f483b1d3038 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: ffffffffffffffda RBX: 00007f483a536058 RCX: 00007f483a37e719
RDX: 0000000000000000 RSI: 0000000000000567 RDI: 0000000000000007
RBP: 00007f483a3f132e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f483a536058 R15: 00007ffc2e04f068
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:unwind_next_frame+0x76/0x20c0 arch/x86/kernel/unwind_orc.c:470
Code: 41 5f c3 cc cc cc cc 49 8d 6d 48 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 00 18 00 00 49 8b 45 48 <48> 89 44 24 08 49 8d 45 38 48 89 c2 48 89 04 24 48 b8 00 00 00 00
RSP: 0018:ffffc90001717fe8 EFLAGS: 00010046
RAX: ffffffff813d7404 RBX: 0000000000000001 RCX: ffffc90001718140
RDX: 1ffff920002e301e RSI: ffff888022fc0000 RDI: ffffc900017180a8
RBP: ffffc900017180f0 R08: 0000000000000001 R09: 0000000000000000
R10: ffffc900017180a8 R11: 0000000000000000 R12: fffff520002e3017
R13: ffffc900017180a8 R14: ffffc900017180a8 R15: ffffc900017180b0
FS:  00007f483b1d36c0(0000) GS:ffff88806a900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc90001717fd8 CR3: 000000004e7f6000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	41 5f                	pop    %r15
   2:	c3                   	ret
   3:	cc                   	int3
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	49 8d 6d 48          	lea    0x48(%r13),%rbp
   b:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  12:	fc ff df
  15:	48 89 ea             	mov    %rbp,%rdx
  18:	48 c1 ea 03          	shr    $0x3,%rdx
  1c:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  20:	0f 85 00 18 00 00    	jne    0x1826
  26:	49 8b 45 48          	mov    0x48(%r13),%rax
* 2a:	48 89 44 24 08       	mov    %rax,0x8(%rsp) <-- trapping instruction
  2f:	49 8d 45 38          	lea    0x38(%r13),%rax
  33:	48 89 c2             	mov    %rax,%rdx
  36:	48 89 04 24          	mov    %rax,(%rsp)
  3a:	48                   	rex.W
  3b:	b8 00 00 00 00       	mov    $0x0,%eax

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/11/02 03:10 upstream 05b92660cdfe f00eed24 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream BUG: stack guard page was hit in io_uring_enter
2024/11/02 03:09 upstream 05b92660cdfe f00eed24 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream BUG: stack guard page was hit in io_uring_enter
2024/11/02 00:46 upstream 6c52d4da1c74 9f6834c9 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream BUG: stack guard page was hit in io_uring_enter
* Struck through repros no longer work on HEAD.