syzbot


BUG: stack guard page was hit in sys_chown

Status: fixed on 2022/05/12 07:47
Reported-by: syzbot+ff381ac859e935fa1953@syzkaller.appspotmail.com
Fix commit: 3e45af8a72c0 ANDROID: incremental-fs: limit mount stack depth
First crash: 991d, last: 956d

Sample crash report:
BUG: stack guard page was hit at ffffc900067cfff8 (stack is ffffc900067d0000..ffffc900067d7fff)
kernel stack overflow (double-fault): 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 4391 Comm: syz-executor.1 Not tainted 5.10.109-syzkaller-00693-g414e6c8e941c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__unwind_start+0x8/0x420 arch/x86/kernel/unwind_frame.c:365
Code: 4d fe ff ff e8 99 36 73 00 e9 43 fe ff ff e8 bf ee 5c 03 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 55 48 89 e5 41 57 41 56 <41> 55 41 54 53 48 83 ec 50 48 89 4d d0 49 89 d7 49 89 f4 49 89 fd
RSP: 0018:ffffc900067d0000 EFLAGS: 00010046
RAX: ffff888111ed4f00 RBX: 1ffff92000cfa022 RCX: ffffc900067d00b0
RDX: 0000000000000000 RSI: ffff888111ed4f00 RDI: ffffc900067d0020
RBP: ffffc900067d0010 R08: dffffc0000000000 R09: ffffc900067d01e0
R10: fffff52000cfa04c R11: 1ffff92000cfa03c R12: ffff888111ed4f00
R13: ffffffff815b5630 R14: ffffc900067d0100 R15: 0000000000000000
FS:  00007fcae1222700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc900067cfff8 CR3: 0000000111323000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 unwind_start arch/x86/include/asm/unwind.h:60 [inline]
 arch_stack_walk+0xdc/0x140 arch/x86/kernel/stacktrace.c:24
 stack_trace_save+0x12d/0x1f0 kernel/stacktrace.c:121
 save_stack+0x97/0x240 mm/page_owner.c:146
 __reset_page_owner+0x36/0x160 mm/page_owner.c:174
 reset_page_owner include/linux/page_owner.h:28 [inline]
 free_pages_prepare mm/page_alloc.c:1331 [inline]
 __free_pages_ok+0x7a7/0x7e0 mm/page_alloc.c:1611
 free_the_page mm/page_alloc.c:5174 [inline]
 __free_pages+0x2d3/0x4a0 mm/page_alloc.c:5180
 __free_slab+0xd3/0x190 mm/slub.c:1903
 free_slab mm/slub.c:1918 [inline]
 discard_slab mm/slub.c:1924 [inline]
 unfreeze_partials+0x17d/0x1b0 mm/slub.c:2418
 put_cpu_partial+0xc8/0x190 mm/slub.c:2454
 __slab_free+0x2d8/0x3a0 mm/slub.c:3104
 do_slab_free mm/slub.c:3200 [inline]
 ___cache_free+0x11f/0x140 mm/slub.c:3219
 qlink_free+0x38/0x40 mm/kasan/quarantine.c:146
 qlist_free_all+0x4c/0xc0 mm/kasan/quarantine.c:165
 kasan_quarantine_reduce+0x15a/0x170 mm/kasan/quarantine.c:272
 __kasan_slab_alloc+0x2f/0xe0 mm/kasan/common.c:438
 kasan_slab_alloc include/linux/kasan.h:259 [inline]
 slab_post_alloc_hook mm/slab.h:583 [inline]
 slab_alloc_node mm/slub.c:2956 [inline]
 slab_alloc mm/slub.c:2964 [inline]
 kmem_cache_alloc+0x16c/0x300 mm/slub.c:2969
 mb_cache_entry_create+0x16b/0x730 fs/mbcache.c:88
 ext4_xattr_block_cache_insert fs/ext4/xattr.c:2978 [inline]
 ext4_xattr_block_get fs/ext4/xattr.c:539 [inline]
 ext4_xattr_get+0x32b/0x810 fs/ext4/xattr.c:654
 ext4_xattr_security_get+0x32/0x40 fs/ext4/xattr_security.c:20
 vfs_getxattr_alloc+0x496/0x610 fs/xattr.c:348
 cap_inode_getsecurity+0x149/0x820 security/commoncap.c:391
 security_inode_getsecurity+0xab/0x140 security/security.c:1346
 xattr_getsecurity fs/xattr.c:304 [inline]
 __vfs_getxattr+0x5dc/0x700 fs/xattr.c:384
 vfs_getxattr+0x54/0x60 fs/xattr.c:406
 incfs_getxattr fs/incfs/vfs.c:1668 [inline]
 incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
 vfs_getxattr_alloc+0x496/0x610 fs/xattr.c:348
 cap_inode_getsecurity+0x149/0x820 security/commoncap.c:391
 security_inode_getsecurity+0xab/0x140 security/security.c:1346
 xattr_getsecurity fs/xattr.c:304 [inline]
 __vfs_getxattr+0x5dc/0x700 fs/xattr.c:384
 vfs_getxattr+0x54/0x60 fs/xattr.c:406
 incfs_getxattr fs/incfs/vfs.c:1668 [inline]
 incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
 vfs_getxattr_alloc+0x496/0x610 fs/xattr.c:348
 cap_inode_getsecurity+0x149/0x820 security/commoncap.c:391
 security_inode_getsecurity+0xab/0x140 security/security.c:1346
 xattr_getsecurity fs/xattr.c:304 [inline]
 __vfs_getxattr+0x5dc/0x700 fs/xattr.c:384
 vfs_getxattr+0x54/0x60 fs/xattr.c:406
 incfs_getxattr fs/incfs/vfs.c:1668 [inline]
 incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
 vfs_getxattr_alloc+0x496/0x610 fs/xattr.c:348
 cap_inode_getsecurity+0x149/0x820 security/commoncap.c:391
 security_inode_getsecurity+0xab/0x140 security/security.c:1346
 xattr_getsecurity fs/xattr.c:304 [inline]
 __vfs_getxattr+0x5dc/0x700 fs/xattr.c:384
 vfs_getxattr+0x54/0x60 fs/xattr.c:406
 incfs_getxattr fs/incfs/vfs.c:1668 [inline]
 incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
 vfs_getxattr_alloc+0x496/0x610 fs/xattr.c:348
 cap_inode_getsecurity+0x149/0x820 security/commoncap.c:391
 security_inode_getsecurity+0xab/0x140 security/security.c:1346
 xattr_getsecurity fs/xattr.c:304 [inline]
 __vfs_getxattr+0x5dc/0x700 fs/xattr.c:384
 vfs_getxattr+0x54/0x60 fs/xattr.c:406
 incfs_getxattr fs/incfs/vfs.c:1668 [inline]
 incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
 vfs_getxattr_alloc+0x496/0x610 fs/xattr.c:348
 cap_inode_getsecurity+0x149/0x820 security/commoncap.c:391
 security_inode_getsecurity+0xab/0x140 security/security.c:1346
 xattr_getsecurity fs/xattr.c:304 [inline]
 __vfs_getxattr+0x5dc/0x700 fs/xattr.c:384
 vfs_getxattr+0x54/0x60 fs/xattr.c:406
 incfs_getxattr fs/incfs/vfs.c:1668 [inline]
 incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
 vfs_getxattr_alloc+0x496/0x610 fs/xattr.c:348
 cap_inode_getsecurity+0x149/0x820 security/commoncap.c:391
 security_inode_getsecurity+0xab/0x140 security/security.c:1346
 xattr_getsecurity fs/xattr.c:304 [inline]
 __vfs_getxattr+0x5dc/0x700 fs/xattr.c:384
 vfs_getxattr+0x54/0x60 fs/xattr.c:406
 incfs_getxattr fs/incfs/vfs.c:1668 [inline]
 incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
 vfs_getxattr_alloc+0x496/0x610 fs/xattr.c:348
 cap_inode_getsecurity+0x149/0x820 security/commoncap.c:391
 security_inode_getsecurity+0xab/0x140 security/security.c:1346
 xattr_getsecurity fs/xattr.c:304 [inline]
 __vfs_getxattr+0x5dc/0x700 fs/xattr.c:384
 vfs_getxattr+0x54/0x60 fs/xattr.c:406
 incfs_getxattr fs/incfs/vfs.c:1668 [inline]
 incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
 vfs_getxattr_alloc+0x496/0x610 fs/xattr.c:348
 cap_inode_getsecurity+0x149/0x820 security/commoncap.c:391
 security_inode_getsecurity+0xab/0x140 security/security.c:1346
 xattr_getsecurity fs/xattr.c:304 [inline]
 __vfs_getxattr+0x5dc/0x700 fs/xattr.c:384
 vfs_getxattr+0x54/0x60 fs/xattr.c:406
 incfs_getxattr fs/incfs/vfs.c:1668 [inline]
 incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
 vfs_getxattr_alloc+0x496/0x610 fs/xattr.c:348
 cap_inode_getsecurity+0x149/0x820 security/commoncap.c:391
 security_inode_getsecurity+0xab/0x140 security/security.c:1346
 xattr_getsecurity fs/xattr.c:304 [inline]
 __vfs_getxattr+0x5dc/0x700 fs/xattr.c:384
 vfs_getxattr+0x54/0x60 fs/xattr.c:406
 incfs_getxattr fs/incfs/vfs.c:1668 [inline]
 incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
 vfs_getxattr_alloc+0x496/0x610 fs/xattr.c:348
 cap_inode_getsecurity+0x149/0x820 security/commoncap.c:391
 security_inode_getsecurity+0xab/0x140 security/security.c:1346
 xattr_getsecurity fs/xattr.c:304 [inline]
 __vfs_getxattr+0x5dc/0x700 fs/xattr.c:384
 vfs_getxattr+0x54/0x60 fs/xattr.c:406
 incfs_getxattr fs/incfs/vfs.c:1668 [inline]
 incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
 vfs_getxattr_alloc+0x496/0x610 fs/xattr.c:348
 cap_inode_getsecurity+0x149/0x820 security/commoncap.c:391
 security_inode_getsecurity+0xab/0x140 security/security.c:1346
 xattr_getsecurity fs/xattr.c:304 [inline]
 __vfs_getxattr+0x5dc/0x700 fs/xattr.c:384
 vfs_getxattr+0x54/0x60 fs/xattr.c:406
 incfs_getxattr fs/incfs/vfs.c:1668 [inline]
 incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
 vfs_getxattr_alloc+0x496/0x610 fs/xattr.c:348
 cap_inode_getsecurity+0x149/0x820 security/commoncap.c:391
 security_inode_getsecurity+0xab/0x140 security/security.c:1346
 xattr_getsecurity fs/xattr.c:304 [inline]
 __vfs_getxattr+0x5dc/0x700 fs/xattr.c:384
 incfs_getxattr fs/incfs/vfs.c:1668 [inline]
 incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
 vfs_getxattr_alloc+0x496/0x610 fs/xattr.c:348
 cap_inode_getsecurity+0x149/0x820 security/commoncap.c:391
 security_inode_getsecurity+0xab/0x140 security/security.c:1346
 xattr_getsecurity fs/xattr.c:304 [inline]
 __vfs_getxattr+0x5dc/0x700 fs/xattr.c:384
 vfs_getxattr+0x54/0x60 fs/xattr.c:406
 incfs_getxattr fs/incfs/vfs.c:1668 [inline]
 incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
 vfs_getxattr_alloc+0x496/0x610 fs/xattr.c:348
 cap_inode_getsecurity+0x149/0x820 security/commoncap.c:391
 security_inode_getsecurity+0xab/0x140 security/security.c:1346
 xattr_getsecurity fs/xattr.c:304 [inline]
 __vfs_getxattr+0x5dc/0x700 fs/xattr.c:384
 vfs_getxattr+0x54/0x60 fs/xattr.c:406
 incfs_getxattr fs/incfs/vfs.c:1668 [inline]
 incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
 vfs_getxattr_alloc+0x496/0x610 fs/xattr.c:348
 cap_inode_getsecurity+0x149/0x820 security/commoncap.c:391
 security_inode_getsecurity+0xab/0x140 security/security.c:1346
 xattr_getsecurity fs/xattr.c:304 [inline]
 __vfs_getxattr+0x5dc/0x700 fs/xattr.c:384
 vfs_getxattr+0x54/0x60 fs/xattr.c:406
 incfs_getxattr fs/incfs/vfs.c:1668 [inline]
 incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
 vfs_getxattr_alloc+0x496/0x610 fs/xattr.c:348
 cap_inode_getsecurity+0x149/0x820 security/commoncap.c:391
 security_inode_getsecurity+0xab/0x140 security/security.c:1346
 xattr_getsecurity fs/xattr.c:304 [inline]
 __vfs_getxattr+0x5dc/0x700 fs/xattr.c:384
 vfs_getxattr+0x54/0x60 fs/xattr.c:406
 incfs_getxattr fs/incfs/vfs.c:1668 [inline]
 incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
 vfs_getxattr_alloc+0x496/0x610 fs/xattr.c:348
 cap_inode_getsecurity+0x149/0x820 security/commoncap.c:391
 security_inode_getsecurity+0xab/0x140 security/security.c:1346
 xattr_getsecurity fs/xattr.c:304 [inline]
 __vfs_getxattr+0x5dc/0x700 fs/xattr.c:384
 vfs_getxattr+0x54/0x60 fs/xattr.c:406
 incfs_getxattr fs/incfs/vfs.c:1668 [inline]
 incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
 vfs_getxattr_alloc+0x496/0x610 fs/xattr.c:348
 cap_inode_getsecurity+0x149/0x820 security/commoncap.c:391
 security_inode_getsecurity+0xab/0x140 security/security.c:1346
 xattr_getsecurity fs/xattr.c:304 [inline]
 __vfs_getxattr+0x5dc/0x700 fs/xattr.c:384
 vfs_getxattr+0x54/0x60 fs/xattr.c:406
 incfs_getxattr fs/incfs/vfs.c:1668 [inline]
 incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
 vfs_getxattr_alloc+0x496/0x610 fs/xattr.c:348
 cap_inode_getsecurity+0x149/0x820 security/commoncap.c:391
 security_inode_getsecurity+0xab/0x140 security/security.c:1346
 xattr_getsecurity fs/xattr.c:304 [inline]
 __vfs_getxattr+0x5dc/0x700 fs/xattr.c:384
 vfs_getxattr+0x54/0x60 fs/xattr.c:406
 incfs_getxattr fs/incfs/vfs.c:1668 [inline]
 incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
 vfs_getxattr_alloc+0x496/0x610 fs/xattr.c:348
 cap_inode_getsecurity+0x149/0x820 security/commoncap.c:391
 security_inode_getsecurity+0xab/0x140 security/security.c:1346
 xattr_getsecurity fs/xattr.c:304 [inline]
 __vfs_getxattr+0x5dc/0x700 fs/xattr.c:384
 vfs_getxattr+0x54/0x60 fs/xattr.c:406
 incfs_getxattr fs/incfs/vfs.c:1668 [inline]
 incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
 vfs_getxattr_alloc+0x496/0x610 fs/xattr.c:348
 cap_inode_getsecurity+0x149/0x820 security/commoncap.c:391
 security_inode_getsecurity+0xab/0x140 security/security.c:1346
 xattr_getsecurity fs/xattr.c:304 [inline]
 __vfs_getxattr+0x5dc/0x700 fs/xattr.c:384
 vfs_getxattr+0x54/0x60 fs/xattr.c:406
 incfs_getxattr fs/incfs/vfs.c:1668 [inline]
 incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
 vfs_getxattr_alloc+0x496/0x610 fs/xattr.c:348
 cap_inode_getsecurity+0x149/0x820 security/commoncap.c:391
 security_inode_getsecurity+0xab/0x140 security/security.c:1346
 xattr_getsecurity fs/xattr.c:304 [inline]
 __vfs_getxattr+0x5dc/0x700 fs/xattr.c:384
 vfs_getxattr+0x54/0x60 fs/xattr.c:406
 incfs_getxattr fs/incfs/vfs.c:1668 [inline]
 incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
 vfs_getxattr_alloc+0x496/0x610 fs/xattr.c:348
 cap_inode_getsecurity+0x149/0x820 security/commoncap.c:391
 security_inode_getsecurity+0xab/0x140 security/security.c:1346
 xattr_getsecurity fs/xattr.c:304 [inline]
 __vfs_getxattr+0x5dc/0x700 fs/xattr.c:384
 vfs_getxattr+0x54/0x60 fs/xattr.c:406
 incfs_getxattr fs/incfs/vfs.c:1668 [inline]
 incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
 vfs_getxattr_alloc+0x496/0x610 fs/xattr.c:348
 cap_inode_getsecurity+0x149/0x820 security/commoncap.c:391
 security_inode_getsecurity+0xab/0x140 security/security.c:1346
 xattr_getsecurity fs/xattr.c:304 [inline]
 __vfs_getxattr+0x5dc/0x700 fs/xattr.c:384
 vfs_getxattr+0x54/0x60 fs/xattr.c:406
 incfs_getxattr fs/incfs/vfs.c:1668 [inline]
 incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
 vfs_getxattr_alloc+0x496/0x610 fs/xattr.c:348
 cap_inode_getsecurity+0x149/0x820 security/commoncap.c:391
 security_inode_getsecurity+0xab/0x140 security/security.c:1346
 xattr_getsecurity fs/xattr.c:304 [inline]
 __vfs_getxattr+0x5dc/0x700 fs/xattr.c:384
 vfs_getxattr+0x54/0x60 fs/xattr.c:406
 incfs_getxattr fs/incfs/vfs.c:1668 [inline]
 incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
 vfs_getxattr_alloc+0x496/0x610 fs/xattr.c:348
 cap_inode_getsecurity+0x149/0x820 security/commoncap.c:391
 security_inode_getsecurity+0xab/0x140 security/security.c:1346
 xattr_getsecurity fs/xattr.c:304 [inline]
 __vfs_getxattr+0x5dc/0x700 fs/xattr.c:384
 vfs_getxattr+0x54/0x60 fs/xattr.c:406
 incfs_getxattr fs/incfs/vfs.c:1668 [inline]
 incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
 vfs_getxattr_alloc+0x496/0x610 fs/xattr.c:348
 cap_inode_getsecurity+0x149/0x820 security/commoncap.c:391
 security_inode_getsecurity+0xab/0x140 security/security.c:1346
 xattr_getsecurity fs/xattr.c:304 [inline]
 __vfs_getxattr+0x5dc/0x700 fs/xattr.c:384
 vfs_getxattr+0x54/0x60 fs/xattr.c:406
 incfs_getxattr fs/incfs/vfs.c:1668 [inline]
 incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
 vfs_getxattr_alloc+0x496/0x610 fs/xattr.c:348
 cap_inode_getsecurity+0x149/0x820 security/commoncap.c:391
 security_inode_getsecurity+0xab/0x140 security/security.c:1346
 xattr_getsecurity fs/xattr.c:304 [inline]
 __vfs_getxattr+0x5dc/0x700 fs/xattr.c:384
 vfs_getxattr+0x54/0x60 fs/xattr.c:406
 incfs_getxattr fs/incfs/vfs.c:1668 [inline]
 incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
 vfs_getxattr_alloc+0x496/0x610 fs/xattr.c:348
 cap_inode_getsecurity+0x149/0x820 security/commoncap.c:391
 security_inode_getsecurity+0xab/0x140 security/security.c:1346
 xattr_getsecurity fs/xattr.c:304 [inline]
 __vfs_getxattr+0x5dc/0x700 fs/xattr.c:384
 vfs_getxattr+0x54/0x60 fs/xattr.c:406
 incfs_getxattr fs/incfs/vfs.c:1668 [inline]
 incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
 vfs_getxattr_alloc+0x496/0x610 fs/xattr.c:348
 cap_inode_getsecurity+0x149/0x820 security/commoncap.c:391
 security_inode_getsecurity+0xab/0x140 security/security.c:1346
 xattr_getsecurity fs/xattr.c:304 [inline]
 __vfs_getxattr+0x5dc/0x700 fs/xattr.c:384
 vfs_getxattr+0x54/0x60 fs/xattr.c:406
 incfs_getxattr fs/incfs/vfs.c:1668 [inline]
 incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
 vfs_getxattr_alloc+0x496/0x610 fs/xattr.c:348
 cap_inode_getsecurity+0x149/0x820 security/commoncap.c:391
 security_inode_getsecurity+0xab/0x140 security/security.c:1346
 xattr_getsecurity fs/xattr.c:304 [inline]
 __vfs_getxattr+0x5dc/0x700 fs/xattr.c:384
 vfs_getxattr+0x54/0x60 fs/xattr.c:406
 incfs_getxattr fs/incfs/vfs.c:1668 [inline]
 incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
 vfs_getxattr_alloc+0x496/0x610 fs/xattr.c:348
 cap_inode_getsecurity+0x149/0x820 security/commoncap.c:391
 security_inode_getsecurity+0xab/0x140 security/security.c:1346
 xattr_getsecurity fs/xattr.c:304 [inline]
 __vfs_getxattr+0x5dc/0x700 fs/xattr.c:384
 vfs_getxattr+0x54/0x60 fs/xattr.c:406
 incfs_getxattr fs/incfs/vfs.c:1668 [inline]
 incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
 __vfs_getxattr+0x62f/0x700 fs/xattr.c:399
 cap_inode_need_killpriv+0x4b/0x70 security/commoncap.c:300
 security_inode_need_killpriv+0x50/0xb0 security/security.c:1327
 notify_change+0x4fd/0xe10 fs/attr.c:273
 chown_common+0x3a1/0x660 fs/open.c:675
 do_fchownat+0x175/0x250 fs/open.c:705
 __do_sys_chown fs/open.c:725 [inline]
 __se_sys_chown fs/open.c:723 [inline]
 __x64_sys_chown+0x82/0x90 fs/open.c:723
 do_syscall_64+0x34/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fcae20ee049
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fcae1222168 EFLAGS: 00000246 ORIG_RAX: 000000000000005c
RAX: ffffffffffffffda RBX: 00007fcae2201100 RCX: 00007fcae20ee049
RDX: 000000000000ee01 RSI: ffffffffffffffff RDI: 0000000020000280
RBP: 00007fcae214808d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe79bf4d6f R14: 00007fcae1222300 R15: 0000000000022000
Modules linked in:
---[ end trace 577e942ba634df6f ]---
RIP: 0010:__unwind_start+0x8/0x420 arch/x86/kernel/unwind_frame.c:365
Code: 4d fe ff ff e8 99 36 73 00 e9 43 fe ff ff e8 bf ee 5c 03 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 55 48 89 e5 41 57 41 56 <41> 55 41 54 53 48 83 ec 50 48 89 4d d0 49 89 d7 49 89 f4 49 89 fd
RSP: 0018:ffffc900067d0000 EFLAGS: 00010046
RAX: ffff888111ed4f00 RBX: 1ffff92000cfa022 RCX: ffffc900067d00b0
RDX: 0000000000000000 RSI: ffff888111ed4f00 RDI: ffffc900067d0020
RBP: ffffc900067d0010 R08: dffffc0000000000 R09: ffffc900067d01e0
R10: fffff52000cfa04c R11: 1ffff92000cfa03c R12: ffff888111ed4f00
R13: ffffffff815b5630 R14: ffffc900067d0100 R15: 0000000000000000
FS:  00007fcae1222700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc900067cfff8 CR3: 0000000111323000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 4 bytes skipped:
   0:	e8 99 36 73 00       	callq  0x73369e
   5:	e9 43 fe ff ff       	jmpq   0xfffffe4d
   a:	e8 bf ee 5c 03       	callq  0x35ceece
   f:	66 66 2e 0f 1f 84 00 	data16 nopw %cs:0x0(%rax,%rax,1)
  16:	00 00 00 00
  1a:	0f 1f 40 00          	nopl   0x0(%rax)
  1e:	55                   	push   %rbp
  1f:	48 89 e5             	mov    %rsp,%rbp
  22:	41 57                	push   %r15
  24:	41 56                	push   %r14
* 26:	41 55                	push   %r13 <-- trapping instruction
  28:	41 54                	push   %r12
  2a:	53                   	push   %rbx
  2b:	48 83 ec 50          	sub    $0x50,%rsp
  2f:	48 89 4d d0          	mov    %rcx,-0x30(%rbp)
  33:	49 89 d7             	mov    %rdx,%r15
  36:	49 89 f4             	mov    %rsi,%r12
  39:	49 89 fd             	mov    %rdi,%r13

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2022/04/12 11:23 android12-5.10-lts 414e6c8e941c af01ee7d .config console log report info ci2-android-5-10 BUG: stack guard page was hit in sys_chown
2022/03/08 11:07 android12-5.10-lts e1b86e7f5cbb 7bdd8b2c .config console log report info ci2-android-5-10 BUG: stack guard page was hit in sys_chown
* Struck through repros no longer work on HEAD.