loop4: detected capacity change from 0 to 14901 read_mapping_page failed! jfs_mount: diMount failed w/rc = -5 ================================================================== BUG: KASAN: use-after-free in diFree+0x17ac/0x2648 fs/jfs/jfs_imap.c:871 Read of size 4 at addr ffff000132f18004 by task syz-executor.4/16707 CPU: 1 PID: 16707 Comm: syz-executor.4 Not tainted 6.1.29-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report+0x174/0x4c0 mm/kasan/report.c:395 kasan_report+0xd4/0x130 mm/kasan/report.c:495 __asan_report_load4_noabort+0x2c/0x38 mm/kasan/report_generic.c:350 diFree+0x17ac/0x2648 fs/jfs/jfs_imap.c:871 jfs_evict_inode+0x2d0/0x3f4 fs/jfs/inode.c:156 evict+0x260/0x68c fs/inode.c:664 iput_final fs/inode.c:1747 [inline] iput+0x7c0/0x8a4 fs/inode.c:1773 diFreeSpecial+0x78/0x108 fs/jfs/jfs_imap.c:548 jfs_mount+0x53c/0x7a4 fs/jfs/jfs_mount.c:203 jfs_fill_super+0x464/0x9f0 fs/jfs/super.c:556 mount_bdev+0x26c/0x368 fs/super.c:1423 jfs_do_mount+0x44/0x58 fs/jfs/super.c:670 legacy_get_tree+0xd4/0x16c fs/fs_context.c:610 vfs_get_tree+0x90/0x274 fs/super.c:1553 do_new_mount+0x25c/0x8c8 fs/namespace.c:3040 path_mount+0x590/0xe58 fs/namespace.c:3370 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3568 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581 Allocated by task 13460: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x80 mm/kasan/common.c:52 kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:505 __kasan_slab_alloc+0x74/0x8c mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook+0x74/0x458 mm/slab.h:737 slab_alloc_node mm/slub.c:3398 [inline] slab_alloc mm/slub.c:3406 [inline] __kmem_cache_alloc_lru mm/slub.c:3413 [inline] kmem_cache_alloc+0x230/0x37c mm/slub.c:3422 rds_tcp_data_recv+0x144/0x894 net/rds/tcp_recv.c:173 tcp_read_sock+0x1bc/0x8ac net/ipv4/tcp.c:1705 rds_tcp_read_sock net/rds/tcp_recv.c:276 [inline] rds_tcp_data_ready+0x2ac/0x620 net/rds/tcp_recv.c:325 tcp_data_ready+0x22c/0x450 net/ipv4/tcp_input.c:5005 tcp_data_queue+0x1cc8/0x53e4 net/ipv4/tcp_input.c:5079 tcp_rcv_established+0xa84/0x1fe0 net/ipv4/tcp_input.c:6005 tcp_v6_do_rcv+0x434/0x11a4 net/ipv6/tcp_ipv6.c:1488 sk_backlog_rcv include/net/sock.h:1109 [inline] __release_sock+0x1a8/0x408 net/core/sock.c:2909 release_sock+0x68/0x1cc net/core/sock.c:3473 tcp_sock_set_cork+0x100/0x188 net/ipv4/tcp.c:3342 rds_tcp_xmit_path_prepare+0x7c/0x8c net/rds/tcp_send.c:45 rds_send_xmit+0x35c/0x22a0 net/rds/send.c:194 rds_send_worker+0x84/0x36c net/rds/threads.c:200 process_one_work+0x7ac/0x1404 kernel/workqueue.c:2289 worker_thread+0x8e4/0xfec kernel/workqueue.c:2436 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860 Freed by task 13460: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x80 mm/kasan/common.c:52 kasan_save_free_info+0x38/0x5c mm/kasan/generic.c:516 ____kasan_slab_free+0x144/0x1c0 mm/kasan/common.c:236 __kasan_slab_free+0x18/0x28 mm/kasan/common.c:244 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1724 [inline] slab_free_freelist_hook mm/slub.c:1750 [inline] slab_free mm/slub.c:3661 [inline] kmem_cache_free+0x2f0/0x588 mm/slub.c:3683 rds_tcp_inc_free+0x30/0x40 net/rds/tcp_recv.c:56 rds_inc_put+0xf8/0x184 net/rds/recv.c:82 rds_tcp_data_recv+0x740/0x894 net/rds/tcp_recv.c:250 tcp_read_sock+0x1bc/0x8ac net/ipv4/tcp.c:1705 rds_tcp_read_sock net/rds/tcp_recv.c:276 [inline] rds_tcp_data_ready+0x2ac/0x620 net/rds/tcp_recv.c:325 tcp_data_ready+0x22c/0x450 net/ipv4/tcp_input.c:5005 tcp_data_queue+0x1cc8/0x53e4 net/ipv4/tcp_input.c:5079 tcp_rcv_established+0xa84/0x1fe0 net/ipv4/tcp_input.c:6005 tcp_v6_do_rcv+0x434/0x11a4 net/ipv6/tcp_ipv6.c:1488 sk_backlog_rcv include/net/sock.h:1109 [inline] __release_sock+0x1a8/0x408 net/core/sock.c:2909 release_sock+0x68/0x1cc net/core/sock.c:3473 tcp_sock_set_cork+0x100/0x188 net/ipv4/tcp.c:3342 rds_tcp_xmit_path_prepare+0x7c/0x8c net/rds/tcp_send.c:45 rds_send_xmit+0x35c/0x22a0 net/rds/send.c:194 rds_send_worker+0x84/0x36c net/rds/threads.c:200 process_one_work+0x7ac/0x1404 kernel/workqueue.c:2289 worker_thread+0x8e4/0xfec kernel/workqueue.c:2436 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860 The buggy address belongs to the object at ffff000132f18000 which belongs to the cache rds_tcp_incoming of size 248 The buggy address is located 4 bytes inside of 248-byte region [ffff000132f18000, ffff000132f180f8) The buggy address belongs to the physical page: page:000000007292976b refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x172f18 flags: 0x5ffc00000000200(slab|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000000200 0000000000000000 dead000000000122 ffff0000d5c69500 raw: 0000000000000000 00000000000d000d 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff000132f17f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff000132f17f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff000132f18000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff000132f18080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc ffff000132f18100: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb ================================================================== imap: 00000000cc331ad8: 32f18138 ffff0001 00003494 04c004cf imap: 000000002c2e4457: 32f18008 ffff0001 d40b0000 ffff0000 ERROR: (device loop4): diFree: inum = 2, iagno = 0, nextiag = -65535 Mount JFS Failure: -5 jfs_mount failed w/return code = -5