----------------------------------------------------------------------------- Object 0xffff8880788a78c0 @offset=2240 Object 0xffff8880788a7930 @offset=2352 Object 0xffff8880788a79a0 @offset=2464 Object 0xffff8880788a7a10 @offset=2576 Slab 0xffffea0001e229c0 objects=36 used=4 fp=0xffff8880788a7000 flags=0xfff00000000200(workingset|node=0|zone=1|lastcpupid=0x7ff) Disabling lock debugging due to kernel taint ------------[ cut here ]------------ 1 WARNING: mm/slub.c:1231 at __slab_err+0x15/0x20 mm/slub.c:1231, CPU#0: syz-executor/5846 Modules linked in: CPU: 0 UID: 0 PID: 5846 Comm: syz-executor Tainted: G B syzkaller #0 PREEMPT(full) Tainted: [B]=BAD_PAGE Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:__slab_err+0x15/0x20 mm/slub.c:1231 Code: 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 e8 5b 01 00 00 bf 05 00 00 00 be 01 00 00 00 e8 0c cf 5e 00 90 <0f> 0b 90 c3 cc cc cc cc cc 66 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc90003d37bf8 EFLAGS: 00010093 RAX: ffffffff81870b9a RBX: ffffc90003d37c20 RCX: ffff88803665db80 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffff932410a7 R09: 1ffffffff2648214 R10: dffffc0000000000 R11: fffffbfff2648215 R12: ffff888033588dc8 R13: ffffea0001e229c0 R14: ffffea0001e22650 R15: ffff888033588d80 FS: 000055555e19a500(0000) GS:ffff888125448000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd48d25bf28 CR3: 0000000075fce000 CR4: 00000000003526f0 Call Trace: free_partial mm/slub.c:7940 [inline] __kmem_cache_shutdown+0x13b/0x2a0 mm/slub.c:7983 kmem_cache_destroy+0x8e/0x170 mm/slab_common.c:569 gfs2_put_super+0x83f/0x890 fs/gfs2/super.c:642 generic_shutdown_super+0x13d/0x2d0 fs/super.c:646 kill_block_super+0x44/0x90 fs/super.c:1725 deactivate_locked_super+0xbc/0x130 fs/super.c:476 cleanup_mnt+0x437/0x4d0 fs/namespace.c:1312 task_work_run+0x1d9/0x270 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:67 [inline] exit_to_user_mode_loop+0xed/0x480 kernel/entry/common.c:98 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:238 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:269 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline] do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa22299d9d7 Code: a2 c7 05 1c fd 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffc7acb9378 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007fa222a32050 RCX: 00007fa22299d9d7 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc7acb9430 RBP: 00007ffc7acb9430 R08: 00007ffc7acba430 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc7acba4c0 R13: 00007fa222a32050 R14: 0000000000022b56 R15: 00007ffc7acba500