loop5: detected capacity change from 0 to 1024 ================================================================== BUG: KASAN: slab-out-of-bounds in hfsplus_bnode_read+0x84/0x24c fs/hfsplus/bnode.c:32 Read of size 8 at addr ffff0000cfb3fce0 by task syz.5.371/5831 CPU: 0 PID: 5831 Comm: syz.5.371 Not tainted 5.15.178-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 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_load8_noabort+0x44/0x50 mm/kasan/report_generic.c:309 hfsplus_bnode_read+0x84/0x24c fs/hfsplus/bnode.c:32 hfsplus_bnode_dump+0x2c4/0x4cc hfsplus_brec_remove+0x3d0/0x4a4 fs/hfsplus/brec.c:229 __hfsplus_delete_attr+0x1e0/0x3ec fs/hfsplus/attributes.c:299 hfsplus_delete_attr+0x2e4/0x41c fs/hfsplus/attributes.c:345 hfsplus_removexattr fs/hfsplus/xattr.c:794 [inline] __hfsplus_setxattr+0xa80/0x1df0 fs/hfsplus/xattr.c:275 hfsplus_setxattr+0xb4/0xec fs/hfsplus/xattr.c:434 hfsplus_user_setxattr+0x54/0x6c fs/hfsplus/xattr_user.c:30 __vfs_removexattr+0x370/0x38c fs/xattr.c:470 __vfs_removexattr_locked+0x1d8/0x380 fs/xattr.c:505 vfs_removexattr+0xe0/0x23c fs/xattr.c:527 removexattr fs/xattr.c:857 [inline] path_removexattr+0x1ec/0x2ec fs/xattr.c:871 __do_sys_removexattr fs/xattr.c:885 [inline] __se_sys_removexattr fs/xattr.c:882 [inline] __arm64_sys_removexattr+0x60/0x78 fs/xattr.c:882 __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 5830: 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] __kmalloc+0x29c/0x4c8 mm/slub.c:4407 kmalloc include/linux/slab.h:596 [inline] kzalloc include/linux/slab.h:721 [inline] __hfs_bnode_create+0xe4/0x864 fs/hfsplus/bnode.c:416 hfsplus_bnode_find+0x200/0xcb0 fs/hfsplus/bnode.c:497 hfsplus_brec_find+0x134/0x4a0 fs/hfsplus/bfind.c:172 hfsplus_find_attr+0x1e0/0x33c hfsplus_attr_exists+0x154/0x1c8 fs/hfsplus/attributes.c:182 __hfsplus_setxattr+0x384/0x1df0 fs/hfsplus/xattr.c:336 hfsplus_setxattr+0xb4/0xec fs/hfsplus/xattr.c:434 hfsplus_user_setxattr+0x54/0x6c fs/hfsplus/xattr_user.c:30 __vfs_setxattr+0x388/0x3a4 fs/xattr.c:182 __vfs_setxattr_noperm+0x110/0x528 fs/xattr.c:216 __vfs_setxattr_locked+0x1ec/0x218 fs/xattr.c:277 vfs_setxattr+0x1a8/0x344 fs/xattr.c:303 do_setxattr fs/xattr.c:588 [inline] setxattr+0x250/0x2b4 fs/xattr.c:611 path_setxattr+0x17c/0x258 fs/xattr.c:630 __do_sys_setxattr fs/xattr.c:646 [inline] __se_sys_setxattr fs/xattr.c:642 [inline] __arm64_sys_setxattr+0xbc/0xd8 fs/xattr.c:642 __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 Last potentially related work creation: kasan_save_stack+0x38/0x68 mm/kasan/common.c:38 kasan_record_aux_stack+0xd4/0x11c mm/kasan/generic.c:348 insert_work+0x64/0x394 kernel/workqueue.c:1366 __queue_work+0xb84/0x114c kernel/workqueue.c:1532 queue_work_on+0xc4/0x17c kernel/workqueue.c:1559 queue_work include/linux/workqueue.h:512 [inline] netdevice_queue_work drivers/infiniband/core/roce_gid_mgmt.c:659 [inline] netdevice_event+0x724/0x84c drivers/infiniband/core/roce_gid_mgmt.c:802 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 net/core/dev.c:2044 [inline] dev_set_mac_address+0x394/0x4ec net/core/dev.c:9082 dev_set_mac_address_user+0x44/0x68 net/core/dev.c:9096 do_setlink+0x750/0x3134 net/core/rtnetlink.c:2731 __rtnl_newlink net/core/rtnetlink.c:3447 [inline] rtnl_newlink+0x1294/0x1acc 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 Second to last potentially related work creation: kasan_save_stack+0x38/0x68 mm/kasan/common.c:38 kasan_record_aux_stack+0xd4/0x11c mm/kasan/generic.c:348 insert_work+0x64/0x394 kernel/workqueue.c:1366 __queue_work+0xb84/0x114c kernel/workqueue.c:1532 queue_work_on+0xc4/0x17c kernel/workqueue.c:1559 queue_work include/linux/workqueue.h:512 [inline] addr_event+0x300/0x3f8 drivers/infiniband/core/roce_gid_mgmt.c:853 inet6addr_event+0xf8/0x160 drivers/infiniband/core/roce_gid_mgmt.c:883 notifier_call_chain kernel/notifier.c:83 [inline] atomic_notifier_call_chain+0x174/0x2a0 kernel/notifier.c:198 inet6addr_notifier_call_chain+0x30/0x40 net/ipv6/addrconf_core.c:109 ipv6_add_addr+0x918/0xb6c net/ipv6/addrconf.c:1182 addrconf_add_linklocal+0x24c/0x83c net/ipv6/addrconf.c:3242 addrconf_addr_gen+0x3a0/0x944 net/ipv6/addrconf.c:3373 addrconf_init_auto_addrs+0x788/0xcac addrconf_notify+0x6ac/0xc58 net/ipv6/addrconf.c:3665 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] netdev_state_change+0x180/0x22c net/core/dev.c:1409 linkwatch_do_dev+0x2b0/0x3c8 net/core/link_watch.c:167 __linkwatch_run_queue+0x424/0x730 net/core/link_watch.c:213 linkwatch_event+0x58/0x68 net/core/link_watch.c:252 process_one_work+0x790/0x11b8 kernel/workqueue.c:2310 process_scheduled_works kernel/workqueue.c:2373 [inline] worker_thread+0xb88/0x1034 kernel/workqueue.c:2459 kthread+0x37c/0x45c kernel/kthread.c:334 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 The buggy address belongs to the object at ffff0000cfb3fc00 which belongs to the cache kmalloc-256 of size 256 The buggy address is located 224 bytes inside of 256-byte region [ffff0000cfb3fc00, ffff0000cfb3fd00) The buggy address belongs to the page: page:00000000da7a1e01 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10fb3e head:00000000da7a1e01 order:1 compound_mapcount:0 flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 fffffc00033d0780 0000000200000002 ffff0000c0002480 raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000cfb3fb80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff0000cfb3fc00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff0000cfb3fc80: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff0000cfb3fd00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff0000cfb3fd80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== Unable to handle kernel paging request at virtual address ffff62e00000b82f Mem abort info: ESR = 0x0000000096000004 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x04: level 0 translation fault Data abort info: ISV = 0, ISS = 0x00000004 CM = 0, WnR = 0 swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000001ae196000 [ffff62e00000b82f] pgd=0000000000000000, p4d=0000000000000000 Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 5831 Comm: syz.5.371 Tainted: G B 5.15.178-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : bytes_is_nonzero mm/kasan/generic.c:85 [inline] pc : memory_is_nonzero mm/kasan/generic.c:102 [inline] pc : memory_is_poisoned_n mm/kasan/generic.c:128 [inline] pc : memory_is_poisoned mm/kasan/generic.c:159 [inline] pc : check_region_inline mm/kasan/generic.c:180 [inline] pc : kasan_check_range+0x74/0x2b4 mm/kasan/generic.c:189 lr : memcpy+0x90/0xe8 mm/kasan/shadow.c:65 sp : ffff800020426f10 x29: ffff800020426f10 x28: 00000000000000ff x27: dfff800000000000 x26: ffff800020427040 x25: 1ffff000028a79eb x24: 0000000000000001 x23: ffff8000171c7000 x22: ffff800008fc3718 x21: ffff800020427020 x20: ffff17000005c17f x19: 0000000000000001 x18: 0000000000000000 x17: 0000000000000000 x16: ffff800011b4da70 x15: 00000000000000ff x14: ffff0000c6443680 x13: 0000000000ff0100 x12: 0000000000000001 x11: 1fffe2e00000b82f x10: 1fffe2e00000b82f x9 : ffffffffffffffff x8 : ffff62e00000b82f x7 : 0000000000000000 x6 : 00000000000000ff x5 : ffff800020427042 x4 : ffff0000f4c7700c x3 : ffff800008fc3718 x2 : 0000000000000000 x1 : 0000000000000001 x0 : ffff17000005c17f Call trace: bytes_is_nonzero mm/kasan/generic.c:84 [inline] memory_is_nonzero mm/kasan/generic.c:102 [inline] memory_is_poisoned_n mm/kasan/generic.c:128 [inline] memory_is_poisoned mm/kasan/generic.c:159 [inline] check_region_inline mm/kasan/generic.c:180 [inline] kasan_check_range+0x74/0x2b4 mm/kasan/generic.c:189 memcpy+0x90/0xe8 mm/kasan/shadow.c:65 hfsplus_bnode_read+0x120/0x24c fs/hfsplus/bnode.c:32 hfsplus_bnode_dump+0x2c4/0x4cc hfsplus_brec_remove+0x3d0/0x4a4 fs/hfsplus/brec.c:229 __hfsplus_delete_attr+0x1e0/0x3ec fs/hfsplus/attributes.c:299 hfsplus_delete_attr+0x2e4/0x41c fs/hfsplus/attributes.c:345 hfsplus_removexattr fs/hfsplus/xattr.c:794 [inline] __hfsplus_setxattr+0xa80/0x1df0 fs/hfsplus/xattr.c:275 hfsplus_setxattr+0xb4/0xec fs/hfsplus/xattr.c:434 hfsplus_user_setxattr+0x54/0x6c fs/hfsplus/xattr_user.c:30 __vfs_removexattr+0x370/0x38c fs/xattr.c:470 __vfs_removexattr_locked+0x1d8/0x380 fs/xattr.c:505 vfs_removexattr+0xe0/0x23c fs/xattr.c:527 removexattr fs/xattr.c:857 [inline] path_removexattr+0x1ec/0x2ec fs/xattr.c:871 __do_sys_removexattr fs/xattr.c:885 [inline] __se_sys_removexattr fs/xattr.c:882 [inline] __arm64_sys_removexattr+0x60/0x78 fs/xattr.c:882 __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 Code: 5400014c b4000b8c aa2a03e9 8b0b0129 (3940010a) ---[ end trace ae6048fbe9e8d7bd ]--- ---------------- Code disassembly (best guess): 0: 5400014c b.gt 0x28 4: b4000b8c cbz x12, 0x174 8: aa2a03e9 mvn x9, x10 c: 8b0b0129 add x9, x9, x11 * 10: 3940010a ldrb w10, [x8] <-- trapping instruction