================================================================== BUG: KASAN: slab-out-of-bounds in udf_write_aext+0x4c0/0x668 fs/udf/inode.c:2105 Write of size 4 at addr ffff0000ca495ff0 by task syz.0.2344/10974 CPU: 0 PID: 10974 Comm: syz.0.2344 Not tainted 6.1.110-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 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_store_n_noabort+0x28/0x34 mm/kasan/report_generic.c:367 udf_write_aext+0x4c0/0x668 fs/udf/inode.c:2105 udf_add_entry+0x11e0/0x28b0 fs/udf/namei.c:482 udf_mkdir+0x158/0x7e0 fs/udf/namei.c:681 vfs_mkdir+0x334/0x4e4 fs/namei.c:4108 do_mkdirat+0x220/0x510 fs/namei.c:4133 __do_sys_mkdirat fs/namei.c:4148 [inline] __se_sys_mkdirat fs/namei.c:4146 [inline] __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4146 __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:140 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204 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:585 Allocated by task 4376: 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_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0xac/0xc4 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slab_common.c:936 [inline] __kmalloc_node_track_caller+0xd0/0x1c0 mm/slab_common.c:956 kmalloc_reserve net/core/skbuff.c:446 [inline] __alloc_skb+0x180/0x580 net/core/skbuff.c:515 __netdev_alloc_skb+0xb8/0x3c8 net/core/skbuff.c:579 netdev_alloc_skb include/linux/skbuff.h:3206 [inline] dev_alloc_skb include/linux/skbuff.h:3219 [inline] __ieee80211_beacon_get+0x778/0x1aa4 net/mac80211/tx.c:5258 ieee80211_beacon_get_tim+0xb4/0x4ec net/mac80211/tx.c:5340 ieee80211_beacon_get include/net/mac80211.h:5248 [inline] mac80211_hwsim_beacon_tx+0x1fc/0x94c drivers/net/wireless/mac80211_hwsim.c:2086 __iterate_interfaces+0x204/0x484 net/mac80211/util.c:788 ieee80211_iterate_active_interfaces_atomic+0xd4/0x180 net/mac80211/util.c:824 mac80211_hwsim_beacon+0xcc/0x1c8 drivers/net/wireless/mac80211_hwsim.c:2142 __run_hrtimer kernel/time/hrtimer.c:1689 [inline] __hrtimer_run_queues+0x4b0/0xdc0 kernel/time/hrtimer.c:1753 hrtimer_run_softirq+0x158/0x21c kernel/time/hrtimer.c:1770 handle_softirqs+0x318/0xd58 kernel/softirq.c:571 __do_softirq+0x14/0x20 kernel/softirq.c:605 Freed by task 4376: 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+0x2c0/0x4b4 mm/slub.c:3674 kfree+0xcc/0x1b8 mm/slab_common.c:988 skb_free_head net/core/skbuff.c:762 [inline] skb_release_data+0x488/0x6b0 net/core/skbuff.c:791 skb_release_all net/core/skbuff.c:856 [inline] __kfree_skb net/core/skbuff.c:870 [inline] consume_skb+0xa0/0x178 net/core/skbuff.c:1035 mac80211_hwsim_tx_frame+0x1cc/0x1f8 drivers/net/wireless/mac80211_hwsim.c:2054 mac80211_hwsim_beacon_tx+0x500/0x94c drivers/net/wireless/mac80211_hwsim.c:2116 __iterate_interfaces+0x204/0x484 net/mac80211/util.c:788 ieee80211_iterate_active_interfaces_atomic+0xd4/0x180 net/mac80211/util.c:824 mac80211_hwsim_beacon+0xcc/0x1c8 drivers/net/wireless/mac80211_hwsim.c:2142 __run_hrtimer kernel/time/hrtimer.c:1689 [inline] __hrtimer_run_queues+0x4b0/0xdc0 kernel/time/hrtimer.c:1753 hrtimer_run_softirq+0x158/0x21c kernel/time/hrtimer.c:1770 handle_softirqs+0x318/0xd58 kernel/softirq.c:571 __do_softirq+0x14/0x20 kernel/softirq.c:605 Last potentially related work creation: kasan_save_stack+0x40/0x70 mm/kasan/common.c:45 __kasan_record_aux_stack+0xcc/0xe8 mm/kasan/generic.c:486 kasan_record_aux_stack_noalloc+0x14/0x20 mm/kasan/generic.c:496 insert_work+0x64/0x384 kernel/workqueue.c:1361 __queue_work+0xd48/0x136c kernel/workqueue.c:1520 queue_work_on+0xc0/0x16c kernel/workqueue.c:1548 queue_work include/linux/workqueue.h:512 [inline] xlog_cil_push_now fs/xfs/xfs_log_cil.c:1545 [inline] xlog_cil_force_seq+0x25c/0x664 fs/xfs/xfs_log_cil.c:1723 xlog_cil_force fs/xfs/xfs_log_priv.h:598 [inline] xfs_log_force+0x1f8/0xa4c fs/xfs/xfs_log.c:3204 xfs_qm_dqflush+0xa90/0x150c fs/xfs/xfs_dquot.c:1293 xfs_qm_flush_one+0x11c/0x388 fs/xfs/xfs_qm.c:1252 xfs_qm_dquot_walk+0x1f0/0x424 fs/xfs/xfs_qm.c:87 xfs_qm_quotacheck+0x290/0x58c fs/xfs/xfs_qm.c:1331 xfs_qm_mount_quotas+0x2c4/0x590 fs/xfs/xfs_qm.c:1437 xfs_mountfs+0x1368/0x18fc fs/xfs/xfs_mount.c:959 xfs_fs_fill_super+0xe28/0x1080 fs/xfs/xfs_super.c:1681 get_tree_bdev+0x360/0x54c fs/super.c:1366 xfs_fs_get_tree+0x28/0x38 fs/xfs/xfs_super.c:1728 vfs_get_tree+0x90/0x274 fs/super.c:1573 do_new_mount+0x278/0x8fc fs/namespace.c:3051 path_mount+0x590/0xe5c fs/namespace.c:3381 do_mount fs/namespace.c:3394 [inline] __do_sys_mount fs/namespace.c:3602 [inline] __se_sys_mount fs/namespace.c:3579 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3579 __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:140 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204 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:585 Second to last potentially related work creation: kasan_save_stack+0x40/0x70 mm/kasan/common.c:45 __kasan_record_aux_stack+0xcc/0xe8 mm/kasan/generic.c:486 kasan_record_aux_stack_noalloc+0x14/0x20 mm/kasan/generic.c:496 insert_work+0x64/0x384 kernel/workqueue.c:1361 __queue_work+0xd48/0x136c kernel/workqueue.c:1520 delayed_work_timer_fn+0x74/0x90 kernel/workqueue.c:1646 call_timer_fn+0x1c0/0xa1c kernel/time/timer.c:1504 expire_timers kernel/time/timer.c:1544 [inline] __run_timers+0x584/0x718 kernel/time/timer.c:1820 run_timer_softirq+0x7c/0x114 kernel/time/timer.c:1833 handle_softirqs+0x318/0xd58 kernel/softirq.c:571 __do_softirq+0x14/0x20 kernel/softirq.c:605 The buggy address belongs to the object at ffff0000ca495c00 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 496 bytes to the right of 512-byte region [ffff0000ca495c00, ffff0000ca495e00) The buggy address belongs to the physical page: page:00000000b469814e refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10a494 head:00000000b469814e order:2 compound_mapcount:0 compound_pincount:0 flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 fffffc0003583000 dead000000000002 ffff0000c0002600 raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000ca495e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff0000ca495f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff0000ca495f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff0000ca496000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff0000ca496080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 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