KASAN: slab-out-of-bounds Read in crypto_shash

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-6.1	KASAN: slab-out-of-bounds Read in crypto_shash_update				2	168d	168d	0/3	auto-obsoleted due to no activity on 2024/10/14 02:06
upstream	BUG: unable to handle kernel paging request in crypto_shash_update bcachefs	C			6	38d	158d	0/28	upstream: reported C repro on 2024/07/16 01:23

XFS (loop0): invalid iclog size (1 bytes), using lsunit (65536 bytes)
==================================================================
BUG: KASAN: slab-out-of-bounds in crc32c_intel_le_hw arch/x86/crypto/crc32c-intel_glue.c:67 [inline]
BUG: KASAN: slab-out-of-bounds in crc32c_pcl_intel_update+0x120/0x270 arch/x86/crypto/crc32c-intel_glue.c:165
Read of size 8 at addr ffff888064b9de00 by task syz.0.124/3999

CPU: 1 PID: 3999 Comm: syz.0.124 Not tainted 5.15.162-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
 print_address_description+0x63/0x3b0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:434 [inline]
 kasan_report+0x16b/0x1c0 mm/kasan/report.c:451
 crc32c_intel_le_hw arch/x86/crypto/crc32c-intel_glue.c:67 [inline]
 crc32c_pcl_intel_update+0x120/0x270 arch/x86/crypto/crc32c-intel_glue.c:165
 crypto_shash_update+0x1db/0x2a0 crypto/shash.c:131
 crc32c+0xeb/0x1b0 lib/libcrc32c.c:47
 xlog_cksum+0xe6/0x150 fs/xfs/xfs_log.c:1799
 xlog_recover_process+0x83/0x2d0 fs/xfs/xfs_log_recover.c:2870
 xlog_do_recovery_pass+0x8f3/0xec0 fs/xfs/xfs_log_recover.c:3198
 xlog_verify_head+0x21b/0x590 fs/xfs/xfs_log_recover.c:1065
 xlog_find_tail+0x9de/0xe30 fs/xfs/xfs_log_recover.c:1326
 xlog_recover+0xd9/0x530 fs/xfs/xfs_log_recover.c:3374
 xfs_log_mount+0x3d9/0x720 fs/xfs/xfs_log.c:716
 xfs_mountfs+0xba8/0x1ce0 fs/xfs/xfs_mount.c:764
 xfs_fs_fill_super+0x11b4/0x1400 fs/xfs/xfs_super.c:1676
 get_tree_bdev+0x3fe/0x620 fs/super.c:1312
 vfs_get_tree+0x88/0x270 fs/super.c:1517
 do_new_mount+0x2ba/0xb40 fs/namespace.c:3005
 do_mount fs/namespace.c:3348 [inline]
 __do_sys_mount fs/namespace.c:3556 [inline]
 __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3533
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f94a57172da
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 7e 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007f94a4195e78 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f94a4195f00 RCX: 00007f94a57172da
RDX: 0000000020009600 RSI: 0000000020009640 RDI: 00007f94a4195ec0
RBP: 0000000020009600 R08: 00007f94a4195f00 R09: 0000000000000840
R10: 0000000000000840 R11: 0000000000000206 R12: 0000000020009640
R13: 00007f94a4195ec0 R14: 000000000000968d R15: 00000000200000c0
 </TASK>

Allocated by task 3999:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 ____kasan_kmalloc+0xba/0xf0 mm/kasan/common.c:513
 kasan_kmalloc include/linux/kasan.h:264 [inline]
 __kmalloc_node+0x199/0x390 mm/slub.c:4455
 kmalloc_node include/linux/slab.h:614 [inline]
 kvmalloc_node+0x80/0x140 mm/util.c:619
 xlog_do_recovery_pass+0x18d/0xec0
 xlog_verify_head+0x21b/0x590 fs/xfs/xfs_log_recover.c:1065
 xlog_find_tail+0x9de/0xe30 fs/xfs/xfs_log_recover.c:1326
 xlog_recover+0xd9/0x530 fs/xfs/xfs_log_recover.c:3374
 xfs_log_mount+0x3d9/0x720 fs/xfs/xfs_log.c:716
 xfs_mountfs+0xba8/0x1ce0 fs/xfs/xfs_mount.c:764
 xfs_fs_fill_super+0x11b4/0x1400 fs/xfs/xfs_super.c:1676
 get_tree_bdev+0x3fe/0x620 fs/super.c:1312
 vfs_get_tree+0x88/0x270 fs/super.c:1517
 do_new_mount+0x2ba/0xb40 fs/namespace.c:3005
 do_mount fs/namespace.c:3348 [inline]
 __do_sys_mount fs/namespace.c:3556 [inline]
 __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3533
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0

The buggy address belongs to the object at ffff888064b9dc00
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 0 bytes to the right of
 512-byte region [ffff888064b9dc00, ffff888064b9de00)
The buggy address belongs to the page:
page:ffffea000192e700 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888064b9e000 pfn:0x64b9c
head:ffffea000192e700 order:2 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 ffffea0001a6ee00 0000000400000004 ffff888011c41c80
raw: ffff888064b9e000 0000000080100008 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 3506, ts 48113592314, free_ts 10450679837
 prep_new_page mm/page_alloc.c:2426 [inline]
 get_page_from_freelist+0x322a/0x33c0 mm/page_alloc.c:4159
 __alloc_pages+0x272/0x700 mm/page_alloc.c:5423
 alloc_slab_page mm/slub.c:1775 [inline]
 allocate_slab mm/slub.c:1912 [inline]
 new_slab+0xbb/0x4b0 mm/slub.c:1975
 ___slab_alloc+0x6f6/0xe10 mm/slub.c:3008
 __slab_alloc mm/slub.c:3095 [inline]
 slab_alloc_node mm/slub.c:3186 [inline]
 __kmalloc_node_track_caller+0x1f6/0x390 mm/slub.c:4958
 kmalloc_reserve net/core/skbuff.c:356 [inline]
 __alloc_skb+0x12c/0x590 net/core/skbuff.c:427
 alloc_skb include/linux/skbuff.h:1167 [inline]
 netlink_alloc_large_skb net/netlink/af_netlink.c:1198 [inline]
 netlink_sendmsg+0x6f8/0xd60 net/netlink/af_netlink.c:1895
 sock_sendmsg_nosec net/socket.c:704 [inline]
 __sock_sendmsg net/socket.c:716 [inline]
 __sys_sendto+0x564/0x720 net/socket.c:2058
 __do_sys_sendto net/socket.c:2070 [inline]
 __se_sys_sendto net/socket.c:2066 [inline]
 __x64_sys_sendto+0xda/0xf0 net/socket.c:2066
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1340 [inline]
 free_pcp_prepare mm/page_alloc.c:1391 [inline]
 free_unref_page_prepare+0xc34/0xcf0 mm/page_alloc.c:3317
 free_unref_page+0x95/0x2d0 mm/page_alloc.c:3396
 free_contig_range+0x95/0xf0 mm/page_alloc.c:9342
 destroy_args+0xfe/0x980 mm/debug_vm_pgtable.c:1018
 debug_vm_pgtable+0x40d/0x470 mm/debug_vm_pgtable.c:1331
 do_one_initcall+0x22b/0x7a0 init/main.c:1302
 do_initcall_level+0x157/0x210 init/main.c:1375
 do_initcalls+0x49/0x90 init/main.c:1391
 kernel_init_freeable+0x425/0x5c0 init/main.c:1615
 kernel_init+0x19/0x290 init/main.c:1506
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300

Memory state around the buggy address:
 ffff888064b9dd00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888064b9dd80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff888064b9de00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                   ^
 ffff888064b9de80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888064b9df00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================

Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Assets (help?)	Manager	Title
2024/07/05 17:31	linux-5.15.y	f45bea23c39c	2a40360c	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	KASAN: slab-out-of-bounds Read in crypto_shash_update
2024/07/05 17:31	linux-5.15.y	f45bea23c39c	2a40360c	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	KASAN: slab-out-of-bounds Read in crypto_shash_update
2024/07/03 13:23	linux-5.15.y	4878aadf2d15	1ecfa2d8	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	KASAN: slab-out-of-bounds Read in crypto_shash_update
2024/07/03 13:22	linux-5.15.y	4878aadf2d15	1ecfa2d8	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	KASAN: slab-out-of-bounds Read in crypto_shash_update
2024/06/25 09:21	linux-5.15.y	4878aadf2d15	215eef4a	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	KASAN: slab-out-of-bounds Read in crypto_shash_update
2024/06/25 09:21	linux-5.15.y	4878aadf2d15	215eef4a	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	KASAN: slab-out-of-bounds Read in crypto_shash_update