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BUG: stack guard page was hit in sys_sendfile64

Status: upstream: reported C repro on 2024/12/03 18:30
Subsystems: mm
[Documentation on labels]
Reported-by: syzbot+752d89f7bf8e6a664e8f@syzkaller.appspotmail.com
First crash: 19d, last: 5d19h
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [mm?] BUG: stack guard page was hit in sys_sendfile64 0 (1) 2024/12/03 18:30
▶ ▼ Last patch testing requests (3)
Created Duration User Patch Repo Result
2024/12/15 18:45 11m retest repro upstream report log
2024/12/15 18:45 11m retest repro upstream report log
2024/12/15 18:45 11m retest repro upstream report log

Sample crash report:
BUG: TASK stack guard page was hit at ffffc9000441ff18 (stack is ffffc90004420000..ffffc90004428000)
Oops: stack guard page: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 3 UID: 0 PID: 5931 Comm: syz-executor299 Not tainted 6.12.0-syzkaller-12113-gbcc8eda6d349 #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:mark_lock+0x25/0xc60 kernel/locking/lockdep.c:4710
Code: 90 90 90 90 90 55 48 89 e5 41 57 41 56 41 89 d6 48 ba 00 00 00 00 00 fc ff df 41 55 41 54 53 48 83 e4 f0 48 81 ec 10 01 00 00 <48> c7 44 24 30 b3 8a b5 41 48 8d 44 24 30 48 c7 44 24 38 e0 f7 7a
RSP: 0018:ffffc9000441ff20 EFLAGS: 00010082
RAX: 0000000000000004 RBX: ffff88802833af6a RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffff88802833af48 RDI: ffff88802833a440
RBP: ffffc90004420058 R08: 0000000000000000 R09: fffffbfff2dca398
R10: ffffffff96e51cc7 R11: ffffc90004420540 R12: 0000000000000000
R13: ffff88802833a440 R14: 0000000000000002 R15: ffff88802833af48
FS:  00005555623ad480(0000) GS:ffff88806a900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc9000441ff18 CR3: 0000000023f7a000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <#DF>
 </#DF>
 <TASK>
 mark_usage kernel/locking/lockdep.c:4658 [inline]
 __lock_acquire+0x98e/0x3c40 kernel/locking/lockdep.c:5180
 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5849
 __raw_spin_trylock include/linux/spinlock_api_smp.h:90 [inline]
 _raw_spin_trylock+0x63/0x80 kernel/locking/spinlock.c:138
 spin_trylock include/linux/spinlock.h:361 [inline]
 rmqueue_pcplist mm/page_alloc.c:3030 [inline]
 rmqueue mm/page_alloc.c:3074 [inline]
 get_page_from_freelist+0x350/0x2f80 mm/page_alloc.c:3471
 __alloc_pages_noprof+0x223/0x25b0 mm/page_alloc.c:4751
 alloc_pages_mpol_noprof+0x2c9/0x610 mm/mempolicy.c:2265
 alloc_slab_page mm/slub.c:2408 [inline]
 allocate_slab mm/slub.c:2574 [inline]
 new_slab+0x2c9/0x410 mm/slub.c:2627
 ___slab_alloc+0xdac/0x1870 mm/slub.c:3815
 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3905
 __slab_alloc_node mm/slub.c:3980 [inline]
 slab_alloc_node mm/slub.c:4141 [inline]
 __do_kmalloc_node mm/slub.c:4282 [inline]
 __kmalloc_noprof+0x2ec/0x510 mm/slub.c:4295
 kmalloc_noprof include/linux/slab.h:905 [inline]
 p9_fcall_init+0x97/0x260 net/9p/client.c:233
 p9_tag_alloc+0x17a/0x870 net/9p/client.c:298
 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+0x153d/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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+0x1553/0x1d00 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+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
 copy_splice_read+0x620/0xb90 fs/splice.c:365
 v9fs_file_splice_read+0xc8/0xe0 fs/9p/vfs_file.c:385
 do_splice_read fs/splice.c:985 [inline]
 do_splice_read+0x282/0x370 fs/splice.c:959
 splice_direct_to_actor+0x2a4/0xa40 fs/splice.c:1089
 do_splice_direct_actor fs/splice.c:1207 [inline]
 do_splice_direct+0x178/0x250 fs/splice.c:1233
 do_sendfile+0xaed/0xe30 fs/read_write.c:1363
 __do_sys_sendfile64 fs/read_write.c:1418 [inline]
 __se_sys_sendfile64 fs/read_write.c:1410 [inline]
 __x64_sys_sendfile64+0x155/0x220 fs/read_write.c:1410
 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: 0033:0x7f422335eb69
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:00007ffc6f847158 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007ffc6f847170 RCX: 00007f422335eb69
RDX: 0000000020000140 RSI: 0000000000000003 RDI: 0000000000000004
RBP: 00007ffc6f847178 R08: 00236f696475612f R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc6f8473d8 R14: 0000000000000001 R15: 0000000000000001
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:mark_lock+0x25/0xc60 kernel/locking/lockdep.c:4710
Code: 90 90 90 90 90 55 48 89 e5 41 57 41 56 41 89 d6 48 ba 00 00 00 00 00 fc ff df 41 55 41 54 53 48 83 e4 f0 48 81 ec 10 01 00 00 <48> c7 44 24 30 b3 8a b5 41 48 8d 44 24 30 48 c7 44 24 38 e0 f7 7a
RSP: 0018:ffffc9000441ff20 EFLAGS: 00010082
RAX: 0000000000000004 RBX: ffff88802833af6a RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffff88802833af48 RDI: ffff88802833a440
RBP: ffffc90004420058 R08: 0000000000000000 R09: fffffbfff2dca398
R10: ffffffff96e51cc7 R11: ffffc90004420540 R12: 0000000000000000
R13: ffff88802833a440 R14: 0000000000000002 R15: ffff88802833af48
FS:  00005555623ad480(0000) GS:ffff88806a900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc9000441ff18 CR3: 0000000023f7a000 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:	55                   	push   %rbp
   6:	48 89 e5             	mov    %rsp,%rbp
   9:	41 57                	push   %r15
   b:	41 56                	push   %r14
   d:	41 89 d6             	mov    %edx,%r14d
  10:	48 ba 00 00 00 00 00 	movabs $0xdffffc0000000000,%rdx
  17:	fc ff df
  1a:	41 55                	push   %r13
  1c:	41 54                	push   %r12
  1e:	53                   	push   %rbx
  1f:	48 83 e4 f0          	and    $0xfffffffffffffff0,%rsp
  23:	48 81 ec 10 01 00 00 	sub    $0x110,%rsp
* 2a:	48 c7 44 24 30 b3 8a 	movq   $0x41b58ab3,0x30(%rsp) <-- trapping instruction
  31:	b5 41
  33:	48 8d 44 24 30       	lea    0x30(%rsp),%rax
  38:	48                   	rex.W
  39:	c7                   	.byte 0xc7
  3a:	44 24 38             	rex.R and $0x38,%al
  3d:	e0 f7                	loopne 0x36
  3f:	7a                   	.byte 0x7a

Crashes (4):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/12/01 18:44 upstream bcc8eda6d349 68914665 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream BUG: stack guard page was hit in sys_sendfile64
2024/12/01 18:18 upstream bcc8eda6d349 68914665 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream BUG: stack guard page was hit in sys_sendfile64
2024/12/01 17:48 upstream bcc8eda6d349 68914665 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream BUG: stack guard page was hit in sys_sendfile64
2024/12/01 17:25 upstream bcc8eda6d349 68914665 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream BUG: stack guard page was hit in sys_sendfile64
* Struck through repros no longer work on HEAD.