================================================================================ UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:3392:10 index 237 is out of range for type 'struct dtslot[128]' CPU: 1 PID: 4034 Comm: syz-executor Not tainted 5.15.178-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 ubsan_epilogue lib/ubsan.c:151 [inline] __ubsan_handle_out_of_bounds+0x108/0x15c lib/ubsan.c:282 dtReadFirst+0x4dc/0xa1c fs/jfs/jfs_dtree.c:3392 dtReadNext fs/jfs/jfs_dtree.c:3443 [inline] jfs_readdir+0x800/0x3030 fs/jfs/jfs_dtree.c:3158 iterate_dir+0x1f4/0x4ec __do_sys_getdents64 fs/readdir.c:369 [inline] __se_sys_getdents64 fs/readdir.c:354 [inline] __arm64_sys_getdents64+0x1c4/0x4c4 fs/readdir.c:354 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 ================================================================================ ================================================================== BUG: KASAN: slab-out-of-bounds in dtReadFirst+0x3d4/0xa1c fs/jfs/jfs_dtree.c:3394 Read of size 1 at addr ffff0000e7550da0 by task syz-executor/4034 CPU: 1 PID: 4034 Comm: syz-executor Not tainted 5.15.178-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 print_address_description+0x7c/0x3f0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0x174/0x1e4 mm/kasan/report.c:451 __asan_report_load1_noabort+0x44/0x50 mm/kasan/report_generic.c:306 dtReadFirst+0x3d4/0xa1c fs/jfs/jfs_dtree.c:3394 dtReadNext fs/jfs/jfs_dtree.c:3443 [inline] jfs_readdir+0x800/0x3030 fs/jfs/jfs_dtree.c:3158 iterate_dir+0x1f4/0x4ec __do_sys_getdents64 fs/readdir.c:369 [inline] __se_sys_getdents64 fs/readdir.c:354 [inline] __arm64_sys_getdents64+0x1c4/0x4c4 fs/readdir.c:354 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Allocated by task 4023: 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+0xbc/0xfc mm/kasan/common.c:513 __kasan_kmalloc+0x10/0x1c mm/kasan/common.c:522 kasan_kmalloc include/linux/kasan.h:264 [inline] kmem_cache_alloc_trace+0x27c/0x47c mm/slub.c:3247 kmalloc include/linux/slab.h:591 [inline] __hw_addr_create net/core/dev_addr_lists.c:29 [inline] __hw_addr_add_ex+0x204/0x674 net/core/dev_addr_lists.c:93 __dev_mc_add net/core/dev_addr_lists.c:832 [inline] dev_mc_add+0x94/0x110 net/core/dev_addr_lists.c:850 igmp6_group_added+0x170/0x6a4 net/ipv6/mcast.c:680 __ipv6_dev_mc_inc+0x808/0xa8c net/ipv6/mcast.c:949 ipv6_dev_mc_inc+0x2c/0x3c net/ipv6/mcast.c:957 ipv6_add_dev+0xacc/0xef4 net/ipv6/addrconf.c:467 addrconf_notify+0x520/0xc58 net/ipv6/addrconf.c:3579 notifier_call_chain kernel/notifier.c:83 [inline] raw_notifier_call_chain+0xd4/0x164 kernel/notifier.c:391 call_netdevice_notifiers_info net/core/dev.c:2018 [inline] call_netdevice_notifiers_extack net/core/dev.c:2030 [inline] call_netdevice_notifiers+0x138/0x1b8 net/core/dev.c:2044 register_netdevice+0xf28/0x12d4 net/core/dev.c:10396 ipvlan_link_new+0x340/0x888 drivers/net/ipvlan/ipvlan_main.c:587 __rtnl_newlink net/core/rtnetlink.c:3521 [inline] rtnl_newlink+0x10d0/0x1acc net/core/rtnetlink.c:3569 rtnetlink_rcv_msg+0xa74/0xdac net/core/rtnetlink.c:5647 netlink_rcv_skb+0x20c/0x3b8 net/netlink/af_netlink.c:2489 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:5665 netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline] netlink_unicast+0x664/0x938 net/netlink/af_netlink.c:1337 netlink_sendmsg+0x844/0xb38 net/netlink/af_netlink.c:1905 sock_sendmsg_nosec net/socket.c:704 [inline] __sock_sendmsg net/socket.c:716 [inline] __sys_sendto+0x388/0x4d0 net/socket.c:2063 __do_sys_sendto net/socket.c:2075 [inline] __se_sys_sendto net/socket.c:2071 [inline] __arm64_sys_sendto+0xd8/0xf8 net/socket.c:2071 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 The buggy address belongs to the object at ffff0000e7550d00 which belongs to the cache kmalloc-128 of size 128 The buggy address is located 32 bytes to the right of 128-byte region [ffff0000e7550d00, ffff0000e7550d80) The buggy address belongs to the page: page:000000007323343a refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x127550 flags: 0x5ffc00000000200(slab|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000000200 0000000000000000 0000000100000001 ffff0000c0002300 raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000e7550c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff0000e7550d00: 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc >ffff0000e7550d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff0000e7550e00: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc ffff0000e7550e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== MetaData crosses page boundary!! lblock = 6300000010, size = -820051968 CPU: 1 PID: 4034 Comm: syz-executor Tainted: G B 5.15.178-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 __get_metapage+0xb54/0x1128 fs/jfs/jfs_metapage.c:597 dtReadFirst+0xc8/0xa1c fs/jfs/jfs_dtree.c:3362 dtReadNext fs/jfs/jfs_dtree.c:3443 [inline] jfs_readdir+0x800/0x3030 fs/jfs/jfs_dtree.c:3158 iterate_dir+0x1f4/0x4ec __do_sys_getdents64 fs/readdir.c:369 [inline] __se_sys_getdents64 fs/readdir.c:354 [inline] __arm64_sys_getdents64+0x1c4/0x4c4 fs/readdir.c:354 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 bread failed! jfs_readdir: unexpected rc = -5 from dtReadNext attempt to access beyond end of device loop2: rw=1, want=4680040, limit=32768 metapage_write_end_io: I/O error JFS: metapage_get_blocks failed JFS: metapage_get_blocks failed JFS: metapage_get_blocks failed JFS: metapage_get_blocks failed