Hello, syzbot found the following issue on: HEAD commit: 28bbe4ea686a Merge tag 'i2c-for-6.11-rc1-second-batch' of .. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=16ab4e19980000 kernel config: https://syzkaller.appspot.com/x/.config?x=9d240b438cabdc8e dashboard link: https://syzkaller.appspot.com/bug?extid=3c2b6d5d4bec3b904933 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/a6bb49754efa/disk-28bbe4ea.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/68010035620f/vmlinux-28bbe4ea.xz kernel image: https://storage.googleapis.com/syzbot-assets/739b01ffb241/bzImage-28bbe4ea.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+3c2b6d5d4bec3b904933@xxxxxxxxxxxxxxxxxxxxxxxxx Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 1 UID: 0 PID: 9319 Comm: syz.4.1011 Not tainted 6.10.0-syzkaller-12084-g28bbe4ea686a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:bq_flush_to_queue+0x44/0x610 kernel/bpf/cpumap.c:675 Code: df e8 40 d8 d6 ff 49 8d 5e 50 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 f6 e8 3a 00 48 8b 2b 48 89 e8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 1d 05 00 00 44 8b 65 00 4d 8d 6e 58 4c RSP: 0018:ffffc90000a18a80 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff8880789a4290 RCX: ffff88801ab78000 RDX: 0000000000000100 RSI: 0000000000000010 RDI: ffff8880789a4240 RBP: 0000000000000000 R08: ffffffff896117da R09: 1ffffffff1f5cf4d R10: dffffc0000000000 R11: fffffbfff1f5cf4e R12: 0000000000000001 R13: ffffc9000d1af820 R14: ffff8880789a4240 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f20312356b8 CR3: 0000000079b12000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> __cpu_map_flush+0x5d/0xd0 kernel/bpf/cpumap.c:767 xdp_do_check_flushed+0x136/0x240 net/core/filter.c:4304 __napi_poll+0xe4/0x490 net/core/dev.c:6774 napi_poll net/core/dev.c:6840 [inline] net_rx_action+0x89b/0x1240 net/core/dev.c:6962 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 common_interrupt+0xaa/0xd0 arch/x86/kernel/irq.c:278 </IRQ> <TASK> asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693 RIP: 0010:rcu_preempt_read_enter kernel/rcu/tree_plugin.h:389 [inline] RIP: 0010:__rcu_read_lock+0x30/0xb0 kernel/rcu/tree_plugin.h:412 Code: 57 41 56 53 49 be 00 00 00 00 00 fc ff df 65 4c 8b 3c 25 00 d7 03 00 49 81 c7 44 04 00 00 4c 89 fb 48 c1 eb 03 42 0f b6 04 33 <84> c0 75 35 41 8b 2f ff c5 42 0f b6 04 33 84 c0 75 3e 41 89 2f 42 RSP: 0018:ffffc9000d1af6b0 EFLAGS: 00000a07 RAX: 0000000000000000 RBX: 1ffff1100356f088 RCX: ffffffff81701eba RDX: dffffc0000000000 RSI: ffffffff8bcad5a0 RDI: ffff88801f942780 RBP: ffff88813fffa000 R08: ffffffff92fcd837 R09: 1ffffffff25f9b06 R10: dffffc0000000000 R11: fffffbfff25f9b07 R12: 1ffff11002bddf93 R13: 0000000000000000 R14: dffffc0000000000 R15: ffff88801ab78444 rcu_read_lock include/linux/rcupdate.h:836 [inline] percpu_ref_put_many include/linux/percpu-refcount.h:330 [inline] percpu_ref_put+0x12/0x180 include/linux/percpu-refcount.h:351 obj_cgroup_put include/linux/memcontrol.h:802 [inline] __memcg_slab_free_hook+0xa7/0x310 mm/memcontrol.c:3050 memcg_slab_free_hook mm/slub.c:2186 [inline] slab_free mm/slub.c:4470 [inline] kmem_cache_free+0x1cf/0x350 mm/slub.c:4548 vma_lock_free kernel/fork.c:457 [inline] __vm_area_free+0xe0/0x110 kernel/fork.c:513 remove_vma mm/mmap.c:187 [inline] exit_mmap+0x645/0xc80 mm/mmap.c:3406 __mmput+0x115/0x380 kernel/fork.c:1345 exit_mm+0x220/0x310 kernel/exit.c:571 do_exit+0x9b2/0x27f0 kernel/exit.c:869 do_group_exit+0x207/0x2c0 kernel/exit.c:1031 get_signal+0x1695/0x1730 kernel/signal.c:2917 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd3c9775f19 Code: Unable to access opcode bytes at 0x7fd3c9775eef. RSP: 002b:00007fd3ca6110f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007fd3c9905f68 RCX: 00007fd3c9775f19 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fd3c9905f68 RBP: 00007fd3c9905f60 R08: 00007fd3ca6116c0 R09: 00007fd3ca6116c0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd3c9905f6c R13: 000000000000000b R14: 00007ffc73d12a30 R15: 00007ffc73d12b18 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:bq_flush_to_queue+0x44/0x610 kernel/bpf/cpumap.c:675 Code: df e8 40 d8 d6 ff 49 8d 5e 50 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 f6 e8 3a 00 48 8b 2b 48 89 e8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 1d 05 00 00 44 8b 65 00 4d 8d 6e 58 4c RSP: 0018:ffffc90000a18a80 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff8880789a4290 RCX: ffff88801ab78000 RDX: 0000000000000100 RSI: 0000000000000010 RDI: ffff8880789a4240 RBP: 0000000000000000 R08: ffffffff896117da R09: 1ffffffff1f5cf4d R10: dffffc0000000000 R11: fffffbfff1f5cf4e R12: 0000000000000001 R13: ffffc9000d1af820 R14: ffff8880789a4240 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f20312356b8 CR3: 0000000079b12000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: df e8 fucomip %st(0),%st 2: 40 d8 d6 rex fcom %st(6) 5: ff 49 8d decl -0x73(%rcx) 8: 5e pop %rsi 9: 50 push %rax a: 48 89 d8 mov %rbx,%rax d: 48 c1 e8 03 shr $0x3,%rax 11: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) 16: 74 08 je 0x20 18: 48 89 df mov %rbx,%rdi 1b: e8 f6 e8 3a 00 call 0x3ae916 20: 48 8b 2b mov (%rbx),%rbp 23: 48 89 e8 mov %rbp,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 0f b6 04 38 movzbl (%rax,%r15,1),%eax <-- trapping instruction 2f: 84 c0 test %al,%al 31: 0f 85 1d 05 00 00 jne 0x554 37: 44 8b 65 00 mov 0x0(%rbp),%r12d 3b: 4d 8d 6e 58 lea 0x58(%r14),%r13 3f: 4c rex.WR --- 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
