------------[ 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: 15711 Comm: syz-executor.0 Not tainted 6.9.0-rc1-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 : [<807e8518>] lr : [<807e690c>] psr: 80000113 sp : ee9ddad0 ip : ee9ddb08 fp : ee9ddaec r10: 00000000 r9 : ffefd804 r8 : ff7e7f1c r7 : 0000008e r6 : ee9ddaf0 r5 : 8d9d4910 r4 : ffefd804 r3 : df000000 r2 : ffffffd8 r1 : 00000000 r0 : ee9ddaf0 Flags: Nzcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: 30c5387d Table: 8bde2c00 DAC: fffffffd Register r0 information: 2-page vmalloc region starting at 0xee9dc000 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 8d9d4910 pointer offset 0 size 40 Register r6 information: 2-page vmalloc region starting at 0xee9dc000 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 0xee9dc000 allocated at kernel_clone+0xac/0x3cc kernel/fork.c:2796 Register r12 information: 2-page vmalloc region starting at 0xee9dc000 allocated at kernel_clone+0xac/0x3cc kernel/fork.c:2796 Process syz-executor.0 (pid: 15711, stack limit = 0xee9dc000) Stack: (0xee9ddad0 to 0xee9de000) dac0: ff7e7efc 8d9d4910 debdfa5c 83f55fc0 dae0: ee9ddb4c ee9ddaf0 804c3dd4 807e8488 00000002 00000000 00000000 00000000 db00: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 db20: 00000068 a44f545d 8d9d4910 00000068 debdfa5c 83feff44 83feff40 83feff40 db40: ee9ddb74 ee9ddb50 804c6a18 804c3d24 debdfa5c 00000000 ee9ddbe4 00000000 db60: 8ba2bc00 83dab200 ee9ddbc4 ee9ddb78 804bbbf4 804c68c8 804bd118 802e2798 db80: 00000598 00000000 00100cca 00000000 00000000 a44f545d 8ba2bc00 00000068 dba0: 00100cca 00000000 00000000 ee9ddbe3 0000006f 00000000 ee9ddc3c ee9ddbc8 dbc0: 804bd614 804bbb58 ee9ddbe3 00000000 808a734c debdfa5c 0000006a 0000006a dbe0: 01fb053c 00000000 00000000 00000000 00000000 00000000 00000001 00000000 dc00: ee9ddc00 ee9ddc00 81875270 a44f545d 00000406 00000001 00000000 0000006a dc20: 842373c0 00100cca 00000000 ee9ddd50 ee9ddcb4 ee9ddc40 804bd968 804bd45c dc40: 00000000 a44f545d 00000001 ee9ddd50 00000000 00000000 ee9ddc8c ee9ddc68 dc60: 8042e9b0 8042e804 ee9ddd50 8260cac8 842373c0 01350000 83dab200 00000000 dc80: ee9ddcb4 a44f545d 804bcde8 ee9ddd50 00000000 0000006a 842373c0 83dab200 dca0: 00000000 00000000 ee9ddd14 ee9ddcb8 8047f368 804bd90c 8049445c 80479d1c dcc0: ee9ddd84 8ba2bc00 00000000 00000000 01350000 843d3600 ee9ddd14 ee9ddce8 dce0: 83dab200 804943e4 e03a6003 00000214 8ba2bc00 01350000 842373c0 01350000 dd00: 843d3600 00000000 ee9dddc4 ee9ddd18 80480c4c 8047f174 843d3640 ffffffff dd20: ee9ddd88 013504e8 81c66394 8d9a1c0c 843d3640 01350000 01370fff 8d9a1c0c dd40: 00000000 ffffffff ee9ddd50 ee9dde48 842373c0 00000cc0 00001350 01350000 dd60: 01350000 00000a14 8bf3d048 8bde2c00 00006a80 00000000 00000000 00000000 dd80: 00000000 deb8136c 00000000 00000000 ee9dddc4 a44f545d 80480308 ee9dde48 dda0: 013504e8 00000214 00000207 01350000 843d3600 00000007 ee9dde0c ee9dddc8 ddc0: 80215d94 80480880 dddd0280 8ba2bc00 a3e9e8c0 356554c0 ee9dde04 8ba2bc00 dde0: 82c02600 8261d0e0 00000207 013504e8 ee9dde48 80215c4c 8ba2bc00 00000109 de00: ee9dde44 ee9dde10 802161dc 80215c58 8080ca8c 00000000 00000000 00000000 de20: 00000000 81848bcc 00000113 ffffffff ee9dde7c 80200288 ee9ddf44 ee9dde48 de40: 80200ae4 802161b0 ee9dded0 013504e8 ffffffe8 00000000 8ba2bc00 ee9ddee0 de60: ee9ddfb0 013504e0 80200288 8ba2bc00 00000109 ee9ddf44 00000018 ee9dde94 de80: 80426ddc 81848bcc 00000113 ffffffff 8089c028 ee9ddee0 ee9ddfb0 80200288 dea0: 8ba2bc00 ee9dded0 00000008 00000000 8ba2bc00 80426ddc 8ba2bc00 00000000 dec0: 00000001 0000c350 0007ad28 00000000 00000000 00000000 00000000 00000000 dee0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 df00: 802fb878 dddc7340 00000000 00000000 00000000 a44f545d 8089c028 8ba2bc00 df20: ee9ddfb0 80200288 00000109 80200288 8ba2bc00 00000109 ee9ddfac ee9ddf48 df40: 8020bc18 80426c54 80307668 802fd80c 00000000 81a04f98 ee9ddfa4 ee9ddf68 df60: 803097bc 80307618 00000000 00000000 000f4240 00000000 00000000 a44f545d df80: 00000000 a44f545d 00000000 7ed62534 00000000 00000109 80200288 8ba2bc00 dfa0: 00000000 ee9ddfb0 80200088 8020bb2c 00000000 00000000 7ed6253c 7ed62534 dfc0: 00000000 7ed62534 00000000 00000109 00000000 00000000 7ed62670 00002040 dfe0: 00000000 7ed62530 00000001 0007ad28 20000010 00000000 00000000 00000000 Call trace: [<807e847c>] (sg_init_one) from [<804c3dd4>] (zswap_decompress+0xbc/0x208 mm/zswap.c:1089) r7:83f55fc0 r6:debdfa5c r5:8d9d4910 r4:ff7e7efc [<804c3d18>] (zswap_decompress) from [<804c6a18>] (zswap_load+0x15c/0x198 mm/zswap.c:1637) r9:83feff40 r8:83feff40 r7:83feff44 r6:debdfa5c r5:00000068 r4:8d9d4910 [<804c68bc>] (zswap_load) from [<804bbbf4>] (swap_read_folio+0xa8/0x498 mm/page_io.c:518) r9:83dab200 r8:8ba2bc00 r7:00000000 r6:ee9ddbe4 r5:00000000 r4:debdfa5c [<804bbb4c>] (swap_read_folio) from [<804bd614>] (swap_cluster_readahead+0x1c4/0x34c mm/swap_state.c:684) r10:00000000 r9:0000006f r8:ee9ddbe3 r7:00000000 r6:00000000 r5:00100cca r4:00000068 [<804bd450>] (swap_cluster_readahead) from [<804bd968>] (swapin_readahead+0x68/0x4a8 mm/swap_state.c:904) r10:ee9ddd50 r9:00000000 r8:00100cca r7:842373c0 r6:0000006a r5:00000000 r4:00000001 [<804bd900>] (swapin_readahead) from [<8047f368>] (do_swap_page+0x200/0xcc4 mm/memory.c:4046) r10:00000000 r9:00000000 r8:83dab200 r7:842373c0 r6:0000006a r5:00000000 r4:ee9ddd50 [<8047f168>] (do_swap_page) from [<80480c4c>] (handle_pte_fault mm/memory.c:5301 [inline]) [<8047f168>] (do_swap_page) from [<80480c4c>] (__handle_mm_fault mm/memory.c:5439 [inline]) [<8047f168>] (do_swap_page) from [<80480c4c>] (handle_mm_fault+0x3d8/0x12b8 mm/memory.c:5604) r10:00000000 r9:843d3600 r8:01350000 r7:842373c0 r6:01350000 r5:8ba2bc00 r4:00000214 [<80480874>] (handle_mm_fault) from [<80215d94>] (do_page_fault+0x148/0x3a8 arch/arm/mm/fault.c:333) r10:00000007 r9:843d3600 r8:01350000 r7:00000207 r6:00000214 r5:013504e8 r4:ee9dde48 [<80215c4c>] (do_page_fault) from [<802161dc>] (do_DataAbort+0x38/0xa8 arch/arm/mm/fault.c:565) r10:00000109 r9:8ba2bc00 r8:80215c4c r7:ee9dde48 r6:013504e8 r5:00000207 r4:8261d0e0 [<802161a4>] (do_DataAbort) from [<80200ae4>] (__dabt_svc+0x44/0x60 arch/arm/kernel/entry-armv.S:212) Exception stack(0xee9dde48 to 0xee9dde90) de40: ee9dded0 013504e8 ffffffe8 00000000 8ba2bc00 ee9ddee0 de60: ee9ddfb0 013504e0 80200288 8ba2bc00 00000109 ee9ddf44 00000018 ee9dde94 de80: 80426ddc 81848bcc 00000113 ffffffff r8:80200288 r7:ee9dde7c r6:ffffffff r5:00000113 r4:81848bcc [<80426c48>] (__rseq_handle_notify_resume) from [<8020bc18>] (rseq_handle_notify_resume include/linux/rseq.h:38 [inline]) [<80426c48>] (__rseq_handle_notify_resume) from [<8020bc18>] (resume_user_mode_work include/linux/resume_user_mode.h:62 [inline]) [<80426c48>] (__rseq_handle_notify_resume) from [<8020bc18>] (do_work_pending+0xf8/0x4c0 arch/arm/kernel/signal.c:631) r10:00000109 r9:8ba2bc00 r8:80200288 r7:00000109 r6:80200288 r5:ee9ddfb0 r4:8ba2bc00 [<8020bb20>] (do_work_pending) from [<80200088>] (slow_work_pending+0xc/0x24) Exception stack(0xee9ddfb0 to 0xee9ddff8) dfa0: 00000000 00000000 7ed6253c 7ed62534 dfc0: 00000000 7ed62534 00000000 00000109 00000000 00000000 7ed62670 00002040 dfe0: 00000000 7ed62530 00000001 0007ad28 20000010 00000000 r9:8ba2bc00 r8:80200288 r7:00000109 r6:00000000 r5:7ed62534 r4:00000000 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