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e9e14a558f8ab-3d2b512eca5mr9873725ab.0.1739910302677; Tue, 18 Feb 2025 12:25:02 -0800 (PST) Date: Tue, 18 Feb 2025 12:25:02 -0800 In-Reply-To: <180B5E33-351D-4A3F-8948-02AF10DBA3D8@gmail.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <67b4ec9e.050a0220.14d86d.000e.GAE@google.com> Subject: Re: [syzbot] [mm?] [bcachefs?] WARNING in lock_list_lru_of_memcg From: syzbot To: linux-kernel@vger.kernel.org, mmpgouride@gmail.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: general protection fault in call_rcu Oops: general protection fault, probably for non-canonical address 0xef11a50f048e916c: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: maybe wild-memory-access in range [0x788d487824748b60-0x788d487824748b67] CPU: 0 UID: 0 PID: 5968 Comm: modprobe Not tainted 6.14.0-rc3-syzkaller-g6537cfb395f3-dirty #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:lookup_object lib/debugobjects.c:423 [inline] RIP: 0010:lookup_object_or_alloc lib/debugobjects.c:662 [inline] RIP: 0010:debug_object_activate+0x1bd/0x580 lib/debugobjects.c:820 Code: 89 df e8 06 d5 2c fd 48 89 5c 24 30 4c 8b 3b 45 31 e4 eb 06 4d 8b 3f 41 ff c4 4d 85 ff 74 40 49 8d 5f 18 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 df e8 d4 d4 2c fd 48 8b 44 24 10 48 39 RSP: 0018:ffffc9000d09f2c0 EFLAGS: 00010006 RAX: 0f11a90f048e916c RBX: 788d487824748b60 RCX: 0000000000000001 RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffc9000d09f1a0 RBP: ffffc9000d09f3d0 R08: 0000000000000003 R09: fffff52001a13e34 R10: dffffc0000000000 R11: fffff52001a13e34 R12: 0000000000000001 R13: 1ffff92001a13e60 R14: dffffc0000000000 R15: 788d487824748b48 FS: 0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055f7221a9008 CR3: 0000000053bc0000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: debug_rcu_head_queue kernel/rcu/rcu.h:224 [inline] __call_rcu_common kernel/rcu/tree.c:3050 [inline] call_rcu+0x97/0xac0 kernel/rcu/tree.c:3172 remove_vma mm/vma.c:419 [inline] vms_complete_munmap_vmas+0x65b/0x8f0 mm/vma.c:1202 do_vmi_align_munmap+0x5ef/0x6f0 mm/vma.c:1445 do_vmi_munmap+0x24e/0x2d0 mm/vma.c:1493 __vm_munmap+0x372/0x510 mm/vma.c:2951 elf_map fs/binfmt_elf.c:389 [inline] elf_load+0x2d6/0x700 fs/binfmt_elf.c:414 load_elf_interp+0x440/0xac0 fs/binfmt_elf.c:681 load_elf_binary+0x1a87/0x2820 fs/binfmt_elf.c:1241 search_binary_handler fs/exec.c:1775 [inline] exec_binprm fs/exec.c:1807 [inline] bprm_execve+0x979/0x1430 fs/exec.c:1859 kernel_execve+0x931/0xa50 fs/exec.c:2026 call_usermodehelper_exec_async+0x237/0x380 kernel/umh.c:109 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:lookup_object lib/debugobjects.c:423 [inline] RIP: 0010:lookup_object_or_alloc lib/debugobjects.c:662 [inline] RIP: 0010:debug_object_activate+0x1bd/0x580 lib/debugobjects.c:820 Code: 89 df e8 06 d5 2c fd 48 89 5c 24 30 4c 8b 3b 45 31 e4 eb 06 4d 8b 3f 41 ff c4 4d 85 ff 74 40 49 8d 5f 18 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 df e8 d4 d4 2c fd 48 8b 44 24 10 48 39 RSP: 0018:ffffc9000d09f2c0 EFLAGS: 00010006 RAX: 0f11a90f048e916c RBX: 788d487824748b60 RCX: 0000000000000001 RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffc9000d09f1a0 RBP: ffffc9000d09f3d0 R08: 0000000000000003 R09: fffff52001a13e34 R10: dffffc0000000000 R11: fffff52001a13e34 R12: 0000000000000001 R13: 1ffff92001a13e60 R14: dffffc0000000000 R15: 788d487824748b48 FS: 0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055f7221a9008 CR3: 0000000053bc0000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 89 df mov %ebx,%edi 2: e8 06 d5 2c fd call 0xfd2cd50d 7: 48 89 5c 24 30 mov %rbx,0x30(%rsp) c: 4c 8b 3b mov (%rbx),%r15 f: 45 31 e4 xor %r12d,%r12d 12: eb 06 jmp 0x1a 14: 4d 8b 3f mov (%r15),%r15 17: 41 ff c4 inc %r12d 1a: 4d 85 ff test %r15,%r15 1d: 74 40 je 0x5f 1f: 49 8d 5f 18 lea 0x18(%r15),%rbx 23: 48 89 d8 mov %rbx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 48 89 df mov %rbx,%rdi 34: e8 d4 d4 2c fd call 0xfd2cd50d 39: 48 8b 44 24 10 mov 0x10(%rsp),%rax 3e: 48 rex.W 3f: 39 .byte 0x39 Tested on: commit: 6537cfb3 Merge tag 'sound-6.14-rc4' of git://git.kerne.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13732498580000 kernel config: https://syzkaller.appspot.com/x/.config?x=b7bde34acd8f53b1 dashboard link: https://syzkaller.appspot.com/bug?extid=38a0cbd267eff2d286ff compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 patch: https://syzkaller.appspot.com/x/patch.diff?x=10f8e5b0580000