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bh=B7qoLDlzwvRSwMyNM2RIruWx2dHuHoj1N+6UHOamxVw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DrRsbvnDpDh007HJPMIYbAWe6x8f24rwPW6WFIRuQwnc5iDm1mC5VNKC+oclYYPKK t8B0nj+6rniK1NTEiqOuJTpUy0fjVSKnO42hYohRKTgE6cxy+YoUdJ8OB8NWT7pK9V j1hvi6Eh5W1zwgcDOvgnKSirUvwjpCpHrnH4O+jPt/eBZQb/7gUMhqxW/vNFac0tyN sS0lD0vW0JsZeYltT+lO/zGXvZhbNonwZX3dp4iBL9zP/UrOLIetgszJcD8vGBsnJI yjJdDvAPrkdzgii9jsZH0opGOy3moxr4m+clrb5e3irbz31CNG2zGBmMVlj6KTPvoT y9RAH9CBYf1fg== From: SeongJae Park To: SeongJae Park Cc: Liam Howlett , "maple-tree@lists.infradead.org" , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , Andrew Morton Subject: Re: [PATCH v2 22/44] mmap: Pass through vmi iterator to __split_vma() Date: Sat, 7 Jan 2023 02:39:54 +0000 Message-Id: <20230107023954.1841-1-sj@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230107020126.1627-1-sj@kernel.org> References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 6439640012 X-Stat-Signature: yht7ethxey616f8a95rmndn65z7d8sw3 X-Rspam-User: X-Rspamd-Server: rspam08 X-HE-Tag: 1673059206-488105 X-HE-Meta: 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 Gycm1LG8 jVSmwqDSEr5X4d5bDb8u6Gy0X9Do4Tc0K2xejEqezYIDsdougFG6QLfV4z0+JfLxNv7+coAF5eGtTo5/M1XDhxLsgh+ejVOguueTZNiGJmdQ2Vgr23kc8m5Xb8JgQ8bbqiJVIAUQBVhEvyCbuOa0IilKCIA9iNwGKZxWx X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Hello Liam, On Sat, 7 Jan 2023 02:01:26 +0000 SeongJae Park wrote: > Hello Liam, > > > I found 'make install' mm-unstable kernel fails from initramfs stage with > 'not a dynamic executable' message. I confirmed the issue is not reproducible > before your patchset[1] but after the series[2]. > > I tried to bisect, but on a commit[3] middle of mm-unstable tree which this > patch is applied, I get below error while booting. Do you have an idea? I further bisected for the boot failure. The first bad commit was a8e0f2e12936 ("mmap: change do_mas_munmap and do_mas_aligned_munmap() to use vma iterator")[1]. The stacktrace on the commit is as below. [ 2.125001] BUG: kernel NULL pointer dereference, address: 0000000000000078 [ 2.128035] #PF: supervisor read access in kernel mode [ 2.128035] #PF: error_code(0x0000) - not-present page [ 2.128035] PGD 0 P4D 0 [ 2.128035] Oops: 0000 [#1] PREEMPT SMP PTI [ 2.128035] CPU: 27 PID: 238 Comm: modprobe Not tainted 6.2.0-rc1+ #24 [ 2.128035] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-pr4 [ 2.128035] RIP: 0010:mas_wr_walk (lib/maple_tree.c:1401 lib/maple_tree.c:2259 lib/maple_tree.c:3732 lib/maple_tree.c:3757) [ 2.128035] Code: 00 48 8b 51 18 30 d2 48 89 53 08 83 f8 02 0f 87 64 01 00 00 4c 8d 42 08 0f b6 80 e68 Code starting with the faulting instruction =========================================== 0: 00 48 8b add %cl,-0x75(%rax) 3: 51 push %rcx 4: 18 30 sbb %dh,(%rax) 6: d2 48 89 rorb %cl,-0x77(%rax) 9: 53 push %rbx a: 08 83 f8 02 0f 87 or %al,-0x78f0fd08(%rbx) 10: 64 01 00 add %eax,%fs:(%rax) 13: 00 4c 8d 42 add %cl,0x42(%rbp,%rcx,4) 17: 08 0f or %cl,(%rdi) 19: b6 80 mov $0x80,%dh 1b: 68 .byte 0x68 [ 2.128035] RSP: 0018:ffffba49c11b3c28 EFLAGS: 00010246 [ 2.128035] RAX: 000000000000000f RBX: ffffba49c11b3c78 RCX: ffffba49c11b3d60 [ 2.128035] RDX: 0000000000000000 RSI: 000000000000000e RDI: 000000000000000e [ 2.128035] RBP: ffffba49c11b3c38 R08: 0000000000000008 R09: 0000000000000001 [ 2.128035] R10: ffff8fe4ca713500 R11: ffff8fe4ca713f48 R12: ffffba49c11b3d60 [ 2.128035] R13: ffff8fe4ca6f2140 R14: ffff8fe4ca711988 R15: 0000000000100073 [ 2.128035] FS: 0000000000000000(0000) GS:ffff9002fdac0000(0000) knlGS:0000000000000000 [ 2.128035] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.128035] CR2: 0000000000000078 CR3: 000000010a6d6000 CR4: 00000000000006e0 [ 2.128035] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 2.128035] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 2.128035] Call Trace: [ 2.128035] [ 2.128035] mas_wr_store_entry (lib/maple_tree.c:4382) [ 2.128035] mas_store_prealloc (lib/maple_tree.c:249 lib/maple_tree.c:5706) [ 2.128035] mmap_region (mm/mmap.c:2765) [ 2.128035] do_mmap (mm/mmap.c:1488) [ 2.128035] ? security_mmap_file (security/security.c:1670) [ 2.128035] vm_mmap_pgoff (mm/util.c:542) [ 2.128035] ksys_mmap_pgoff (mm/mmap.c:1534) [ 2.128035] __x64_sys_mmap (arch/x86/kernel/sys_x86_64.c:86) [ 2.128035] do_syscall_64 (arch/x86/entry/common.c:50 arch/x86/entry/common.c:80) [ 2.128035] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:120) [ 2.128035] RIP: 0033:0x7fea50d24186 [ 2.128035] Code: 1f 44 00 00 f3 0f 1e fa 41 f7 c1 ff 0f 00 00 75 2b 55 48 89 fd 53 89 cb 48 85 ff 74f Code starting with the faulting instruction =========================================== 0: 1f (bad) 1: 44 00 00 add %r8b,(%rax) 4: f3 0f 1e fa endbr64 8: 41 f7 c1 ff 0f 00 00 test $0xfff,%r9d f: 75 2b jne 0x3c 11: 55 push %rbp 12: 48 89 fd mov %rdi,%rbp 15: 53 push %rbx 16: 89 cb mov %ecx,%ebx 18: 48 85 ff test %rdi,%rdi 1b: 4f rex.WRXB [ 2.128035] RSP: 002b:00007ffee1f7b1f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 [ 2.128035] RAX: ffffffffffffffda RBX: 0000000000000022 RCX: 00007fea50d24186 [ 2.176096] ata2: found unknown device (class 0) [ 2.128035] RDX: 0000000000000003 RSI: 0000000000002000 RDI: 0000000000000000 [ 2.128035] RBP: 0000000000000000 R08: 00000000ffffffff R09: 0000000000000000 [ 2.181946] ata2.00: ATAPI: QEMU DVD-ROM, 2.5+, max UDMA/100 [ 2.128035] R10: 0000000000000022 R11: 0000000000000246 R12: 00007fea50d34190 [ 2.128035] R13: 000000000000000c R14: 00007fea50d33060 R15: 0000000000000000 [ 2.188623] scsi 1:0:0:0: CD-ROM QEMU QEMU DVD-ROM 2.5+ PQ: 0 ANSI: 5 [ 2.128035] [ 2.128035] Modules linked in: [ 2.128035] Dumping ftrace buffer: [ 2.128035] (ftrace buffer empty) [ 2.128035] CR2: 0000000000000078 [ 2.196913] ---[ end trace 0000000000000000 ]--- [ 2.197932] RIP: 0010:mas_wr_walk (lib/maple_tree.c:1401 lib/maple_tree.c:2259 lib/maple_tree.c:3732 lib/maple_tree.c:3757) [ 2.198869] Code: 00 48 8b 51 18 30 d2 48 89 53 08 83 f8 02 0f 87 64 01 00 00 4c 8d 42 08 0f b6 80 e68 Code starting with the faulting instruction =========================================== 0: 00 48 8b add %cl,-0x75(%rax) 3: 51 push %rcx 4: 18 30 sbb %dh,(%rax) 6: d2 48 89 rorb %cl,-0x77(%rax) 9: 53 push %rbx a: 08 83 f8 02 0f 87 or %al,-0x78f0fd08(%rbx) 10: 64 01 00 add %eax,%fs:(%rax) 13: 00 4c 8d 42 add %cl,0x42(%rbp,%rcx,4) 17: 08 0f or %cl,(%rdi) 19: b6 80 mov $0x80,%dh 1b: 68 .byte 0x68 [ 2.202922] RSP: 0018:ffffba49c11b3c28 EFLAGS: 00010246 [ 2.204060] RAX: 000000000000000f RBX: ffffba49c11b3c78 RCX: ffffba49c11b3d60 [ 2.205608] RDX: 0000000000000000 RSI: 000000000000000e RDI: 000000000000000e [ 2.207143] RBP: ffffba49c11b3c38 R08: 0000000000000008 R09: 0000000000000001 [ 2.208703] R10: ffff8fe4ca713500 R11: ffff8fe4ca713f48 R12: ffffba49c11b3d60 [ 2.210239] R13: ffff8fe4ca6f2140 R14: ffff8fe4ca711988 R15: 0000000000100073 [ 2.211781] FS: 0000000000000000(0000) GS:ffff9002fdac0000(0000) knlGS:0000000000000000 [ 2.213520] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.214756] CR2: 0000000000000078 CR3: 000000010a6d6000 CR4: 00000000000006e0 [ 2.216316] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [1] https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git/commit/?h=mm-unstable&id=a8e0f2e12936b08e4abde7c867503177def79d12 Thanks, SJ > > [ 2.118502] BUG: kernel NULL pointer dereference, address: 0000000000000078 > [ 2.121516] #PF: supervisor read access in kernel mode > [ 2.121576] #PF: error_code(0x0000) - not-present page > [ 2.121576] PGD 0 P4D 0 > [ 2.121576] Oops: 0000 [#1] PREEMPT SMP PTI > [ 2.121576] CPU: 2 PID: 237 Comm: modprobe Not tainted 6.2.0-rc1+ #18 > [ 2.121576] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-pr4 > [ 2.121576] RIP: 0010:mas_wr_walk (lib/maple_tree.c:1401 lib/maple_tree.c:2259 lib/maple_tree.c:3732 lib/maple_tree.c:3757) > [ 2.121576] Code: 00 48 8b 51 18 30 d2 48 89 53 08 83 f8 02 0f 87 64 01 00 00 4c 8d 42 08 0f b6 80 e68 > > Code starting with the faulting instruction > =========================================== > 0: 00 48 8b add %cl,-0x75(%rax) > 3: 51 push %rcx > 4: 18 30 sbb %dh,(%rax) > 6: d2 48 89 rorb %cl,-0x77(%rax) > 9: 53 push %rbx > a: 08 83 f8 02 0f 87 or %al,-0x78f0fd08(%rbx) > 10: 64 01 00 add %eax,%fs:(%rax) > 13: 00 4c 8d 42 add %cl,0x42(%rbp,%rcx,4) > 17: 08 0f or %cl,(%rdi) > 19: b6 80 mov $0x80,%dh > 1b: 68 .byte 0x68 > [ 2.121576] RSP: 0018:ffffa5190119fc28 EFLAGS: 00010246 > [ 2.121576] RAX: 000000000000000f RBX: ffffa5190119fc78 RCX: ffffa5190119fd60 > [ 2.121576] RDX: 0000000000000000 RSI: 000000000000000e RDI: 000000000000000e > [ 2.121576] RBP: ffffa5190119fc38 R08: 0000000000000008 R09: 0000000000000001 > [ 2.121576] R10: ffff95f5c3435300 R11: ffff95f5c3434c48 R12: ffffa5190119fd60 > [ 2.121576] R13: ffff95f5c9a26880 R14: ffff95f5c3433690 R15: 0000000000100073 > [ 2.121576] FS: 0000000000000000(0000) GS:ffff9613fd480000(0000) knlGS:0000000000000000 > [ 2.121576] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 2.121576] CR2: 0000000000000078 CR3: 0000000103430000 CR4: 00000000000006e0 > [ 2.121576] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > [ 2.121576] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > [ 2.121576] Call Trace: > [ 2.121576] > [ 2.121576] mas_wr_store_entry (lib/maple_tree.c:4382) > [ 2.121576] mas_store_prealloc (lib/maple_tree.c:249 lib/maple_tree.c:5706) > [ 2.121576] mmap_region (mm/mmap.c:2808) > [ 2.121576] do_mmap (mm/mmap.c:1506) > [ 2.121576] ? security_mmap_file (security/security.c:1670) > [ 2.121576] vm_mmap_pgoff (mm/util.c:542) > [ 2.121576] ksys_mmap_pgoff (mm/mmap.c:1552) > [ 2.121576] __x64_sys_mmap (arch/x86/kernel/sys_x86_64.c:86) > [ 2.121576] do_syscall_64 (arch/x86/entry/common.c:50 arch/x86/entry/common.c:80) > [ 2.121576] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:120) > [ 2.121576] RIP: 0033:0x7ff228f7a186 > [ 2.121576] Code: 1f 44 00 00 f3 0f 1e fa 41 f7 c1 ff 0f 00 00 75 2b 55 48 89 fd 53 89 cb 48 85 ff 74f > > Code starting with the faulting instruction > =========================================== > 0: 1f (bad) > 1: 44 00 00 add %r8b,(%rax) > 4: f3 0f 1e fa endbr64 > 8: 41 f7 c1 ff 0f 00 00 test $0xfff,%r9d > f: 75 2b jne 0x3c > 11: 55 push %rbp > 12: 48 89 fd mov %rdi,%rbp > 15: 53 push %rbx > 16: 89 cb mov %ecx,%ebx > 18: 48 85 ff test %rdi,%rdi > 1b: 4f rex.WRXB > [ 2.121576] RSP: 002b:00007ffcbc695148 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 > [ 2.121576] RAX: ffffffffffffffda RBX: 0000000000000022 RCX: 00007ff228f7a186 > [ 2.121576] RDX: 0000000000000003 RSI: 0000000000002000 RDI: 0000000000000000 > [ 2.121576] RBP: 0000000000000000 R08: 00000000ffffffff R09: 0000000000000000 > [ 2.121576] R10: 0000000000000022 R11: 0000000000000246 R12: 00007ff228f8a190 > [ 2.121576] R13: 000000000000000c R14: 00007ff228f89060 R15: 0000000000000000 > [ 2.121576] > [ 2.174098] ata2: found unknown device (class 0) > [ 2.121576] Modules linked in: > [ 2.121576] Dumping ftrace buffer: > [ 2.121576] (ftrace buffer empty) > [ 2.121576] CR2: 0000000000000078 > [ 2.179450] ata2.00: ATAPI: QEMU DVD-ROM, 2.5+, max UDMA/100 > [ 2.179774] ---[ end trace 0000000000000000 ]--- > [ 2.183410] RIP: 0010:mas_wr_walk (lib/maple_tree.c:1401 lib/maple_tree.c:2259 lib/maple_tree.c:3732 lib/maple_tree.c:3757) > [ 2.184545] Code: 00 48 8b 51 18 30 d2 48 89 53 08 83 f8 02 0f 87 64 01 00 00 4c 8d 42 08 0f b6 80 e68 > > Code starting with the faulting instruction > =========================================== > 0: 00 48 8b add %cl,-0x75(%rax) > 3: 51 push %rcx > 4: 18 30 sbb %dh,(%rax) > 6: d2 48 89 rorb %cl,-0x77(%rax) > 9: 53 push %rbx > a: 08 83 f8 02 0f 87 or %al,-0x78f0fd08(%rbx) > 10: 64 01 00 add %eax,%fs:(%rax) > 13: 00 4c 8d 42 add %cl,0x42(%rbp,%rcx,4) > 17: 08 0f or %cl,(%rdi) > 19: b6 80 mov $0x80,%dh > 1b: 68 .byte 0x68 > [ 2.185835] scsi 1:0:0:0: CD-ROM QEMU QEMU DVD-ROM 2.5+ PQ: 0 ANSI: 5 > [ 2.188543] RSP: 0018:ffffa5190119fc28 EFLAGS: 00010246 > [ 2.188546] RAX: 000000000000000f RBX: ffffa5190119fc78 RCX: ffffa5190119fd60 > [ 2.188547] RDX: 0000000000000000 RSI: 000000000000000e RDI: 000000000000000e > [ 2.188548] RBP: ffffa5190119fc38 R08: 0000000000000008 R09: 0000000000000001 > [ 2.188550] R10: ffff95f5c3435300 R11: ffff95f5c3434c48 R12: ffffa5190119fd60 > [ 2.188551] R13: ffff95f5c9a26880 R14: ffff95f5c3433690 R15: 0000000000100073 > [ 2.188552] FS: 0000000000000000(0000) GS:ffff9613fd480000(0000) knlGS:0000000000000000 > [ 2.188554] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 2.188556] CR2: 0000000000000078 CR3: 0000000103430000 CR4: 00000000000006e0 > [ 2.188559] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > [ 2.206738] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > > [1] https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git/commit/?h=mm-unstable&id=a13d6f0ec9b80674195d74ddfb6dfd94d352d2bb > [2] https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git/commit/?h=mm-unstable&id=1329c351b42e20fcd195829357f0eda607f3de09 > [3] https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git/commit/?h=mm-unstable&id=f569105c34815dee1751a00bc9ca5154cc96dd6a > > > Thanks, > SJ >