IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready
IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode.
==================================================================
BUG: KASAN: slab-out-of-bounds in ocfs2_find_smallest_chain fs/ocfs2/suballoc.c:425 [inline]
BUG: KASAN: slab-out-of-bounds in ocfs2_block_group_alloc_contig fs/ocfs2/suballoc.c:442 [inline]
BUG: KASAN: slab-out-of-bounds in ocfs2_block_group_alloc+0x1698/0x1c90 fs/ocfs2/suballoc.c:711
Read of size 4 at addr ffff8800b422f034 by task syz.0.15/4303

CPU: 0 PID: 4303 Comm: syz.0.15 Not tainted 4.19.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x10c/0x17a lib/dump_stack.c:113
 print_address_description.cold.6+0x9/0x244 mm/kasan/report.c:256
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report mm/kasan/report.c:412 [inline]
 kasan_report.cold.7+0x242/0x305 mm/kasan/report.c:396
 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report.c:432
 ocfs2_find_smallest_chain fs/ocfs2/suballoc.c:425 [inline]
 ocfs2_block_group_alloc_contig fs/ocfs2/suballoc.c:442 [inline]
 ocfs2_block_group_alloc+0x1698/0x1c90 fs/ocfs2/suballoc.c:711
 ocfs2_reserve_suballoc_bits+0x3da/0xc80 fs/ocfs2/suballoc.c:844
 ocfs2_reserve_new_metadata_blocks+0x522/0x950 fs/ocfs2/suballoc.c:994
 ocfs2_mknod+0xd3a/0x1d00 fs/ocfs2/namei.c:356
 ocfs2_create+0xe0/0x390 fs/ocfs2/namei.c:680
 lookup_open+0x78b/0x1d20 fs/namei.c:3234
 do_last fs/namei.c:3324 [inline]
 path_openat+0xde7/0x2870 fs/namei.c:3534
 do_filp_open+0x177/0x250 fs/namei.c:3564
 do_sys_open+0x1dc/0x350 fs/open.c:1063
 __do_sys_open fs/open.c:1081 [inline]
 __se_sys_open fs/open.c:1076 [inline]
 __x64_sys_open+0x79/0xb0 fs/open.c:1076
 do_syscall_64+0xd0/0x340 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f663dc1fff9
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:00007f663d6a1038 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f663ddd7f80 RCX: 00007f663dc1fff9
RDX: 0000000000000000 RSI: 0000000004008040 RDI: 0000000020000200
RBP: 00007f663dc92296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f663ddd7f80 R15: 00007ffe427b6ae8

Allocated by task 4045:
 save_stack mm/kasan/kasan.c:448 [inline]
 set_track mm/kasan/kasan.c:460 [inline]
 kasan_kmalloc.part.1+0x62/0xf0 mm/kasan/kasan.c:553
 kasan_kmalloc+0xaf/0xc0 mm/kasan/kasan.c:538
 kasan_slab_alloc+0x11/0x20 mm/kasan/kasan.c:490
 slab_post_alloc_hook mm/slab.h:444 [inline]
 slab_alloc_node mm/slub.c:2706 [inline]
 slab_alloc mm/slub.c:2714 [inline]
 kmem_cache_alloc+0xdc/0x230 mm/slub.c:2719
 kmem_cache_zalloc include/linux/slab.h:697 [inline]
 fill_pool lib/debugobjects.c:134 [inline]
 __debug_object_init+0x801/0xda0 lib/debugobjects.c:380
 debug_object_init+0x16/0x20 lib/debugobjects.c:432
 debug_hrtimer_init kernel/time/hrtimer.c:410 [inline]
 debug_init kernel/time/hrtimer.c:458 [inline]
 hrtimer_init+0x26/0x1b0 kernel/time/hrtimer.c:1308
 copy_signal kernel/fork.c:1499 [inline]
 copy_process.part.4+0x1e8b/0x6e80 kernel/fork.c:1866
 copy_process kernel/fork.c:1664 [inline]
 _do_fork+0x159/0x920 kernel/fork.c:2166
 __do_sys_clone kernel/fork.c:2273 [inline]
 __se_sys_clone kernel/fork.c:2267 [inline]
 __x64_sys_clone+0xba/0x140 kernel/fork.c:2267
 do_syscall_64+0xd0/0x340 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Freed by task 0:
(stack is not available)

The buggy address belongs to the object at ffff8800b422f000
 which belongs to the cache debug_objects_cache of size 40
The buggy address is located 12 bytes to the right of
 40-byte region [ffff8800b422f000, ffff8800b422f028)
The buggy address belongs to the page:
page:ffffea0002d08bc0 count:1 mapcount:0 mapping:ffff88013bfce400 index:0x0
flags: 0xfff00000000100(slab)
raw: 00fff00000000100 dead000000000100 dead000000000200 ffff88013bfce400
raw: 0000000000000000 0000000000490049 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page allocated via order 0, migratetype Unmovable, gfp_mask 0x4a1220(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_HARDWALL)
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook mm/page_alloc.c:1906 [inline]
 prep_new_page mm/page_alloc.c:1914 [inline]
 get_page_from_freelist+0x2c68/0x41c0 mm/page_alloc.c:3345
 __alloc_pages_nodemask+0x390/0x2380 mm/page_alloc.c:4370
 alloc_pages_current+0xfd/0x290 mm/mempolicy.c:2093
 alloc_pages include/linux/gfp.h:509 [inline]
 alloc_slab_page mm/slub.c:1438 [inline]
 allocate_slab mm/slub.c:1583 [inline]
 new_slab+0x49d/0x7f0 mm/slub.c:1654
 new_slab_objects mm/slub.c:2417 [inline]
 ___slab_alloc+0x5b3/0x8e0 mm/slub.c:2569
 __slab_alloc.isra.22+0x6a/0xa0 mm/slub.c:2609
 slab_alloc_node mm/slub.c:2672 [inline]
 slab_alloc mm/slub.c:2714 [inline]
 kmem_cache_alloc+0x1ef/0x230 mm/slub.c:2719
 kmem_cache_zalloc include/linux/slab.h:697 [inline]
 fill_pool lib/debugobjects.c:134 [inline]
 __debug_object_init+0x801/0xda0 lib/debugobjects.c:380
 debug_object_init+0x16/0x20 lib/debugobjects.c:432
 debug_hrtimer_init kernel/time/hrtimer.c:410 [inline]
 debug_init kernel/time/hrtimer.c:458 [inline]
 hrtimer_init+0x26/0x1b0 kernel/time/hrtimer.c:1308
 copy_signal kernel/fork.c:1499 [inline]
 copy_process.part.4+0x1e8b/0x6e80 kernel/fork.c:1866
 copy_process kernel/fork.c:1664 [inline]
 _do_fork+0x159/0x920 kernel/fork.c:2166
 __do_sys_clone kernel/fork.c:2273 [inline]
 __se_sys_clone kernel/fork.c:2267 [inline]
 __x64_sys_clone+0xba/0x140 kernel/fork.c:2267
 do_syscall_64+0xd0/0x340 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Memory state around the buggy address:
 ffff8800b422ef00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8800b422ef80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8800b422f000: 00 00 00 00 00 fc fc 00 00 00 00 00 fc fc 00 00
                                     ^
 ffff8800b422f080: 00 00 00 fc fc 00 00 00 00 00 fc fc 00 00 00 00
 ffff8800b422f100: 00 fc fc 00 00 00 00 00 fc fc 00 00 00 00 00 fc
==================================================================