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Mon, 18 Mar 2024 09:58:19 -0700 (PDT) Date: Mon, 18 Mar 2024 09:58:19 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000bbb3d80613f243a6@google.com> Subject: [syzbot] [mm?] kernel BUG in sg_init_one From: syzbot To: akpm@linux-foundation.org, chengming.zhou@linux.dev, hannes@cmpxchg.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, nphamcs@gmail.com, syzkaller-bugs@googlegroups.com, yosryahmed@google.com Content-Type: text/plain; charset="UTF-8" X-Rspam-User: X-Stat-Signature: zmg88hquuy7ocykip45yhif6wg5msyqe X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 6EFE91A000D X-HE-Tag: 1710781101-120130 X-HE-Meta: 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 sAI0r2br 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 UvPHaXsP 9SejNRO2eTHDGsp7InBJThoDc/iZnpFbGOWvvK7obtLRFhSh29cHlR1Yy8syhZvSeu+6/nfBeYyQLL2XSb9wCFXajPlxgFnGjMgdvZoPMLwbw1uaxenyplBuscBMdjPgtPnpXwKy01JnSwkKclksYGRXB5HEYYvvrFfHYKglnvqx87IGF/oTIzG9Z04cqn920O9zU9k6CbkA9c0+xW5jzDY+Ma3WJc8+E5aeNJA3Tu9LUR+ropBVIjV4s8jx+IW7GorcGlwTf6MK/CN9lFzu4+CBvWvsPVDHlv9O/1yO+7X5U7YchpVNuXq6LxbYPuqF1TzD8y+l4p0InTNwoJGfceRFxQ9PGBUOwra1upV7o+8= 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: List-Subscribe: List-Unsubscribe: Hello, syzbot found the following issue on: HEAD commit: e5eb28f6d1af Merge tag 'mm-nonmm-stable-2024-03-14-09-36' .. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13043abe180000 kernel config: https://syzkaller.appspot.com/x/.config?x=19bb57c23dffc38e dashboard link: https://syzkaller.appspot.com/bug?extid=adbc983a1588b7805de3 compiler: arm-linux-gnueabi-gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: arm syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1706d231180000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13ba7959180000 Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/8ead8862021c/non_bootable_disk-e5eb28f6.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/0a7371c63ff2/vmlinux-e5eb28f6.xz kernel image: https://storage.googleapis.com/syzbot-assets/7539441b4add/zImage-e5eb28f6.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+adbc983a1588b7805de3@syzkaller.appspotmail.com ------------[ cut here ]------------ kernel BUG at include/linux/scatterlist.h:187! Internal error: Oops - BUG: 0 [#1] PREEMPT SMP ARM Modules linked in: CPU: 0 PID: 2997 Comm: syz-executor198 Not tainted 6.8.0-syzkaller #0 Hardware name: ARM-Versatile Express PC is at sg_set_buf include/linux/scatterlist.h:187 [inline] PC is at sg_init_one+0x9c/0xa8 lib/scatterlist.c:143 LR is at sg_init_table+0x2c/0x40 lib/scatterlist.c:128 pc : [<807e1748>] lr : [<807dfb3c>] psr: 80000113 sp : df955c38 ip : df955c70 fp : df955c54 r10: 00000000 r9 : ffefd004 r8 : ff7e7f14 r7 : 00000751 r6 : df955c58 r5 : 844847d0 r4 : ffefd004 r3 : df000000 r2 : ffffffd8 r1 : 00000000 r0 : df955c58 Flags: Nzcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: 30c5387d Table: 8446ed00 DAC: fffffffd Register r0 information: 2-page vmalloc region starting at 0xdf954000 allocated at kernel_clone+0xac/0x3cc kernel/fork.c:2796 Register r1 information: NULL pointer Register r2 information: non-paged memory Register r3 information: non-paged memory Register r4 information: non-paged memory Register r5 information: slab vmap_area start 844847d0 pointer offset 0 size 40 Register r6 information: 2-page vmalloc region starting at 0xdf954000 allocated at kernel_clone+0xac/0x3cc kernel/fork.c:2796 Register r7 information: non-paged memory Register r8 information: 0-page vmalloc region starting at 0xff7d8000 allocated at pcpu_get_vm_areas+0x0/0x12c8 mm/vmalloc.c:3064 Register r9 information: non-paged memory Register r10 information: NULL pointer Register r11 information: 2-page vmalloc region starting at 0xdf954000 allocated at kernel_clone+0xac/0x3cc kernel/fork.c:2796 Register r12 information: 2-page vmalloc region starting at 0xdf954000 allocated at kernel_clone+0xac/0x3cc kernel/fork.c:2796 Process syz-executor198 (pid: 2997, stack limit = 0xdf954000) Stack: (0xdf955c38 to 0xdf956000) 5c20: ff7e7ef4 844847d0 5c40: def6d08c 83471c80 df955cb4 df955c58 804c1824 807e16b8 00000002 00000000 5c60: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5c80: 00000000 00000000 00000001 cc78d8d0 844847d0 00000001 def6d08c 8446eb84 5ca0: 8446eb80 8446eb80 df955cdc df955cb8 804c4468 804c1774 def6d08c 00000001 5cc0: df955d4c 00000000 835e6c00 844ac800 df955d2c df955ce0 804b9644 804c4318 5ce0: 804bab68 802e2238 00000000 00000000 00100cca 00000000 00000000 cc78d8d0 5d00: 00000102 00000001 00100cca 00000000 00000000 df955d4b 00000007 00000000 5d20: df955da4 df955d30 804bb064 804b95a8 df955d4b 00000000 00000100 def6d08c 5d40: 00000001 00000001 01955d6c 00000000 00000000 00000000 00000000 00000000 5d60: 00000001 00000000 df955d68 df955d68 8185c338 cc78d8d0 00000406 00000001 5d80: 00000000 00000001 84476480 00100cca 00000000 df955eb8 df955e1c df955da8 5da0: 804bb3b8 804baeac 00000000 cc78d8d0 00000001 df955eb8 00000000 00000000 5dc0: df955df4 df955dd0 8042c648 8042c49c df955eb8 8260cac8 84476480 7eb0d000 5de0: 844ac800 00000000 df955e1c cc78d8d0 804ba838 df955eb8 00000000 00000001 5e00: 84476480 844ac800 00000000 00000040 df955e7c df955e20 8047cde0 804bb35c 5e20: 80491ed4 80477794 df955eec 835e6c00 00000000 00000000 7eb0d000 842b3900 5e40: df955e7c df955e50 844ac800 80491e5c fe4d5003 00000254 835e6c00 7eb0d000 5e60: 84476480 7eb0d000 842b3900 00000040 df955f2c df955e80 8047e6c4 8047cbec 5e80: 842b3940 ffffffff df955ef0 7eb0d9b4 81c64fd4 8376240c 842b3940 7eaed000 5ea0: 7eb0dfff 8376240c 00000000 ffffffff df955eb8 df955fb0 84476480 00000cc0 5ec0: 0007efff 7eb0d000 7eb0d000 00000a54 845a4fa8 8446ed08 00000180 00000000 5ee0: 00000000 00000000 00000000 defbbe08 00000000 00000000 df955f2c cc78d8d0 5f00: 8047dd80 df955fb0 7eb0d9b4 00000254 00000207 7eb0d000 842b3900 00000007 5f20: df955f74 df955f30 80215d28 8047e2f8 835e6c00 00000109 df955fac df955f48 5f40: 8020bbe8 835e6c00 80306e18 8261d0e0 00000207 7eb0d9b4 df955fb0 80215be0 5f60: 00000000 7eb0da7c df955fac df955f78 80216170 80215bec 00000000 cc78d8d0 5f80: 00000000 cc78d8d0 00000000 00066bd4 00000010 ffffffff 835e6c00 824a9044 5fa0: 00000000 df955fb0 80200e3c 80216144 00000000 00000000 22d5f800 0008d158 5fc0: 00000000 7eb0d9a4 00000000 00000109 00000000 00000000 7eb0da7c 7eb0da3c 5fe0: 00000000 7eb0d9a0 00000001 00066bd4 00000010 ffffffff 00000000 00000000 Backtrace: [<807e16ac>] (sg_init_one) from [<804c1824>] (zswap_decompress+0xbc/0x208 mm/zswap.c:1089) r7:83471c80 r6:def6d08c r5:844847d0 r4:ff7e7ef4 [<804c1768>] (zswap_decompress) from [<804c4468>] (zswap_load+0x15c/0x198 mm/zswap.c:1637) r9:8446eb80 r8:8446eb80 r7:8446eb84 r6:def6d08c r5:00000001 r4:844847d0 [<804c430c>] (zswap_load) from [<804b9644>] (swap_read_folio+0xa8/0x498 mm/page_io.c:518) r9:844ac800 r8:835e6c00 r7:00000000 r6:df955d4c r5:00000001 r4:def6d08c [<804b959c>] (swap_read_folio) from [<804bb064>] (swap_cluster_readahead+0x1c4/0x34c mm/swap_state.c:684) r10:00000000 r9:00000007 r8:df955d4b r7:00000000 r6:00000000 r5:00100cca r4:00000001 [<804baea0>] (swap_cluster_readahead) from [<804bb3b8>] (swapin_readahead+0x68/0x4a8 mm/swap_state.c:904) r10:df955eb8 r9:00000000 r8:00100cca r7:84476480 r6:00000001 r5:00000000 r4:00000001 [<804bb350>] (swapin_readahead) from [<8047cde0>] (do_swap_page+0x200/0xcc4 mm/memory.c:4046) r10:00000040 r9:00000000 r8:844ac800 r7:84476480 r6:00000001 r5:00000000 r4:df955eb8 [<8047cbe0>] (do_swap_page) from [<8047e6c4>] (handle_pte_fault mm/memory.c:5301 [inline]) [<8047cbe0>] (do_swap_page) from [<8047e6c4>] (__handle_mm_fault mm/memory.c:5439 [inline]) [<8047cbe0>] (do_swap_page) from [<8047e6c4>] (handle_mm_fault+0x3d8/0x12b8 mm/memory.c:5604) r10:00000040 r9:842b3900 r8:7eb0d000 r7:84476480 r6:7eb0d000 r5:835e6c00 r4:00000254 [<8047e2ec>] (handle_mm_fault) from [<80215d28>] (do_page_fault+0x148/0x3a8 arch/arm/mm/fault.c:326) r10:00000007 r9:842b3900 r8:7eb0d000 r7:00000207 r6:00000254 r5:7eb0d9b4 r4:df955fb0 [<80215be0>] (do_page_fault) from [<80216170>] (do_DataAbort+0x38/0xa8 arch/arm/mm/fault.c:558) r10:7eb0da7c r9:00000000 r8:80215be0 r7:df955fb0 r6:7eb0d9b4 r5:00000207 r4:8261d0e0 [<80216138>] (do_DataAbort) from [<80200e3c>] (__dabt_usr+0x5c/0x60 arch/arm/kernel/entry-armv.S:427) Exception stack(0xdf955fb0 to 0xdf955ff8) 5fa0: 00000000 00000000 22d5f800 0008d158 5fc0: 00000000 7eb0d9a4 00000000 00000109 00000000 00000000 7eb0da7c 7eb0da3c 5fe0: 00000000 7eb0d9a0 00000001 00066bd4 00000010 ffffffff r8:824a9044 r7:835e6c00 r6:ffffffff r5:00000010 r4:00066bd4 Code: 1a000004 e1822003 e8860094 e89da8f0 (e7f001f2) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 1a000004 bne 0x18 4: e1822003 orr r2, r2, r3 8: e8860094 stm r6, {r2, r4, r7} c: e89da8f0 ldm sp, {r4, r5, r6, r7, fp, sp, pc} * 10: e7f001f2 udf #18 <-- trapping instruction --- This report is generated by a bot. 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