==================================================================
BUG: KASAN: slab-out-of-bounds in atomic_inc include/asm-generic/atomic-instrumented.h:109 [inline]
BUG: KASAN: slab-out-of-bounds in extBalloc fs/jfs/jfs_extent.c:557 [inline]
BUG: KASAN: slab-out-of-bounds in extAlloc+0xb8e/0xdb0 fs/jfs/jfs_extent.c:138
Write of size 4 at addr ffff8880490f2c58 by task syz-executor.1/12625

CPU: 0 PID: 12625 Comm: syz-executor.1 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 print_address_description.cold+0x54/0x219 mm/kasan/report.c:256
 kasan_report_error.cold+0x8a/0x1b9 mm/kasan/report.c:354
 kasan_report+0x8f/0xa0 mm/kasan/report.c:412
 atomic_inc include/asm-generic/atomic-instrumented.h:109 [inline]
 extBalloc fs/jfs/jfs_extent.c:557 [inline]
 extAlloc+0xb8e/0xdb0 fs/jfs/jfs_extent.c:138
 jfs_get_block+0x1f5/0xae0 fs/jfs/inode.c:258
 nobh_write_begin+0x446/0x1030 fs/buffer.c:2619
 jfs_write_begin+0x3e/0x1a0 fs/jfs/inode.c:323
 generic_perform_write+0x1f8/0x4d0 mm/filemap.c:3170
 __generic_file_write_iter+0x24b/0x610 mm/filemap.c:3295
 generic_file_write_iter+0x3f8/0x730 mm/filemap.c:3323
 call_write_iter include/linux/fs.h:1821 [inline]
 new_sync_write fs/read_write.c:474 [inline]
 __vfs_write+0x51b/0x770 fs/read_write.c:487
 __kernel_write+0x109/0x370 fs/read_write.c:506
 dump_emit+0x183/0x300 fs/coredump.c:801
 elf_core_dump+0x33c0/0x4c10 fs/binfmt_elf.c:2392
 do_coredump+0x1d4e/0x2d60 fs/coredump.c:765
usb 14-1: device descriptor read/8, error -110
 get_signal+0xed9/0x1f70 kernel/signal.c:2583
 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799
 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163
 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
 do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7fc30b7955a9
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:00007fc309d08168 EFLAGS: 00000246 ORIG_RAX: 000000000000004d
usb 14-1: new SuperSpeed Gen 1 USB device number 2 using vhci_hcd
RAX: ffffffffffffffe5 RBX: 00007fc30b8b5f80 RCX: 00007fc30b7955a9
RDX: 0000000000000000 RSI: 000004011040bffe RDI: 0000000000000004
RBP: 00007fc30b7f07b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd6ad4a81f R14: 00007fc309d08300 R15: 0000000000022000
usb 14-1: enqueue for inactive port 0

Allocated by task 12625:
usb 14-1: enqueue for inactive port 0
 kmem_cache_alloc_trace+0x12f/0x380 mm/slab.c:3625
usb 14-1: enqueue for inactive port 0
 kmalloc include/linux/slab.h:515 [inline]
 dbMount+0x4d/0x880 fs/jfs/jfs_dmap.c:176
 jfs_mount+0x124/0x3d0 fs/jfs/jfs_mount.c:133
 jfs_fill_super+0x55c/0xb50 fs/jfs/super.c:589
 mount_bdev+0x2fc/0x3b0 fs/super.c:1158
 mount_fs+0xa3/0x310 fs/super.c:1261
 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961
 vfs_kern_mount fs/namespace.c:951 [inline]
 do_new_mount fs/namespace.c:2492 [inline]
 do_mount+0x115c/0x2f50 fs/namespace.c:2822
 ksys_mount+0xcf/0x130 fs/namespace.c:3038
 __do_sys_mount fs/namespace.c:3052 [inline]
 __se_sys_mount fs/namespace.c:3049 [inline]
 __x64_sys_mount+0xba/0x150 fs/namespace.c:3049
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 8138:
 __cache_free mm/slab.c:3503 [inline]
 kfree+0xcc/0x210 mm/slab.c:3822
 kvfree+0x59/0x60 mm/util.c:452
 __do_replace+0x6ab/0x870 net/ipv4/netfilter/arp_tables.c:932
 do_replace net/ipv6/netfilter/ip6_tables.c:1160 [inline]
 do_ip6t_set_ctl+0x2d2/0x430 net/ipv6/netfilter/ip6_tables.c:1686
 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
 nf_setsockopt+0x6f/0xc0 net/netfilter/nf_sockopt.c:115
 ipv6_setsockopt+0x103/0x160 net/ipv6/ipv6_sockglue.c:945
 tcp_setsockopt+0x86/0xd0 net/ipv4/tcp.c:3108
 __sys_setsockopt+0x14d/0x240 net/socket.c:2013
 __do_sys_setsockopt net/socket.c:2024 [inline]
 __se_sys_setsockopt net/socket.c:2021 [inline]
 __x64_sys_setsockopt+0xba/0x150 net/socket.c:2021
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

The buggy address belongs to the object at ffff8880490f2580
 which belongs to the cache kmalloc-2048 of size 2048
The buggy address is located 1752 bytes inside of
 2048-byte region [ffff8880490f2580, ffff8880490f2d80)
The buggy address belongs to the page:
page:ffffea0001243c80 count:1 mapcount:0 mapping:ffff88813bff0c40 index:0xffff8880490f2e00 compound_mapcount: 0
flags: 0xfff00000008100(slab|head)
raw: 00fff00000008100 ffffea0002438288 ffffea000121e388 ffff88813bff0c40
raw: ffff8880490f2e00 ffff8880490f2580 0000000100000002 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8880490f2b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8880490f2b80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8880490f2c00: 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc
                                                    ^
 ffff8880490f2c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8880490f2d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================