Hello, syzbot found the following issue on: HEAD commit: f524a5e4dfb7 Add linux-next specific files for 20240802 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=174c896d980000 kernel config: https://syzkaller.appspot.com/x/.config?x=a66a5509e9947c4c dashboard link: https://syzkaller.appspot.com/bug?extid=263726e59eab6b442723 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/8c0255b9a6ad/disk-f524a5e4.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/71d89466ea60/vmlinux-f524a5e4.xz kernel image: https://storage.googleapis.com/syzbot-assets/ba8fcf059463/bzImage-f524a5e4.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+263726e59eab6b442723@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ WARNING: CPU: 0 PID: 1 at mm/slub.c:4550 slab_free_after_rcu_debug+0x18b/0x270 mm/slub.c:4550 Modules linked in: CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.11.0-rc1-next-20240802-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:slab_free_after_rcu_debug+0x18b/0x270 mm/slub.c:4550 Code: 48 89 04 19 48 8d 4a 08 49 8b 34 24 65 48 0f c7 0e 75 c8 4c 89 f7 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d e9 36 55 ff ff 90 <0f> 0b 90 eb 92 90 0f 0b 90 eb 8c 90 0f 0b 90 eb 86 41 8b 54 24 1c RSP: 0000:ffffc90000007bc0 EFLAGS: 00010286 RAX: ffff88823bc00000 RBX: ffff88802bcee5c0 RCX: 00000000000a0fe0 RDX: ffffea0000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000007e30 R08: ffffffff8142b2ec R09: 1ffffffff26e8ce3 R10: dffffc0000000000 R11: ffffffff81f0bb80 R12: dffffc0000000000 R13: ffffffff817bd996 R14: ffff88823bca0fe0 R15: ffffea0000af3a00 FS: 0000000000000000(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff88823ffff000 CR3: 000000000e734000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> rcu_do_batch kernel/rcu/tree.c:2569 [inline] rcu_core+0xafd/0x1830 kernel/rcu/tree.c:2843 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5826 Code: 2b 00 74 08 4c 89 f7 e8 8a 32 8c 00 f6 44 24 61 02 0f 85 85 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25 RSP: 0000:ffffc900000675a0 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 1ffff9200000cec0 RCX: 455ccde0f6bffc00 RDX: dffffc0000000000 RSI: ffffffff8c0ae6a0 RDI: ffffffff8c609240 RBP: ffffc90000067700 R08: ffffffff93746717 R09: 1ffffffff26e8ce2 R10: dffffc0000000000 R11: fffffbfff26e8ce3 R12: 1ffff9200000cebc R13: dffffc0000000000 R14: ffffc90000067600 R15: 0000000000000246 __fs_reclaim_acquire mm/page_alloc.c:3856 [inline] fs_reclaim_acquire+0x88/0x140 mm/page_alloc.c:3870 might_alloc include/linux/sched/mm.h:334 [inline] slab_pre_alloc_hook mm/slub.c:3979 [inline] slab_alloc_node mm/slub.c:4057 [inline] __do_kmalloc_node mm/slub.c:4197 [inline] __kmalloc_noprof+0xa9/0x400 mm/slub.c:4210 kmalloc_noprof include/linux/slab.h:685 [inline] kzalloc_noprof include/linux/slab.h:807 [inline] kobject_get_path+0xb8/0x230 lib/kobject.c:161 kobject_uevent_env+0x2a5/0x8e0 lib/kobject_uevent.c:545 kernel_add_sysfs_param+0x10a/0x130 kernel/params.c:821 param_sysfs_builtin+0x16e/0x1f0 kernel/params.c:856 param_sysfs_builtin_init+0x31/0x40 kernel/params.c:990 do_one_initcall+0x248/0x880 init/main.c:1267 do_initcall_level+0x157/0x210 init/main.c:1329 do_initcalls+0x3f/0x80 init/main.c:1345 kernel_init_freeable+0x435/0x5d0 init/main.c:1578 kernel_init+0x1d/0x2b0 init/main.c:1467 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 </TASK> ---------------- Code disassembly (best guess): 0: 2b 00 sub (%rax),%eax 2: 74 08 je 0xc 4: 4c 89 f7 mov %r14,%rdi 7: e8 8a 32 8c 00 call 0x8c3296 c: f6 44 24 61 02 testb $0x2,0x61(%rsp) 11: 0f 85 85 01 00 00 jne 0x19c 17: 41 f7 c7 00 02 00 00 test $0x200,%r15d 1e: 74 01 je 0x21 20: fb sti 21: 48 c7 44 24 40 0e 36 movq $0x45e0360e,0x40(%rsp) 28: e0 45 * 2a: 4b c7 44 25 00 00 00 movq $0x0,0x0(%r13,%r12,1) <-- trapping instruction 31: 00 00 33: 43 c7 44 25 09 00 00 movl $0x0,0x9(%r13,%r12,1) 3a: 00 00 3c: 43 rex.XB 3d: c7 .byte 0xc7 3e: 44 rex.R 3f: 25 .byte 0x25 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
