------------[ 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: 9823 Comm: syz-executor.0 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 : [<807e8518>] lr : [<807e690c>] psr: 80000113 sp : ecbd9ad0 ip : ecbd9b08 fp : ecbd9aec r10: 00000000 r9 : ffefd004 r8 : ff7e7f1c r7 : 000000fb r6 : ecbd9af0 r5 : 8c1a6280 r4 : ffefd004 r3 : df000000 r2 : ffffffd8 r1 : 00000000 r0 : ecbd9af0 Flags: Nzcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: 30c5387d Table: 8c0c32c0 DAC: fffffffd Register r0 information: 2-page vmalloc region starting at 0xecbd8000 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 8c1a6280 pointer offset 0 size 40 Register r6 information: 2-page vmalloc region starting at 0xecbd8000 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 0xecbd8000 allocated at kernel_clone+0xac/0x3cc kernel/fork.c:2796 Register r12 information: 2-page vmalloc region starting at 0xecbd8000 allocated at kernel_clone+0xac/0x3cc kernel/fork.c:2796 Process syz-executor.0 (pid: 9823, stack limit = 0xecbd8000) Stack: (0xecbd9ad0 to 0xecbda000) 9ac0: ff7e7efc 8c1a6280 def5cf7c 82c0cb40 9ae0: ecbd9b4c ecbd9af0 804c3dd4 807e8488 00000002 00000000 00000000 00000000 9b00: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9b20: 00000010 fdd24046 8c1a6280 00000010 def5cf7c 8496fd84 8496fd80 8496fd80 9b40: ecbd9b74 ecbd9b50 804c6a18 804c3d24 def5cf7c 00000000 ecbd9be4 00000000 9b60: 840f0000 84272c00 ecbd9bc4 ecbd9b78 804bbbf4 804c68c8 804bd118 802e2798 9b80: 00000598 00000000 00100cca 00000000 00000000 fdd24046 840f0000 00000010 9ba0: 00100cca 00000000 00000000 ecbd9be3 00000017 00000000 ecbd9c3c ecbd9bc8 9bc0: 804bd614 804bbb58 ecbd9be3 00000000 00000004 def5cf7c 00000014 00000014 9be0: 01bd9c0c 00000000 00000000 00000000 00000000 00000000 00000001 00000000 9c00: ecbd9c00 ecbd9c00 81875270 fdd24046 00000406 00000001 00000000 00000014 9c20: 8c977ea0 00100cca 00000000 ecbd9d50 ecbd9cb4 ecbd9c40 804bd968 804bd45c 9c40: 00000000 fdd24046 ecbd9cb8 ecbd9d50 00000000 00000000 ecbd9c8c ecbd9c68 9c60: 8042e9b0 8042e804 ecbd9d50 8260cac8 8c977ea0 01df1000 84272c00 00000000 9c80: ecbd9cb4 fdd24046 804bcde8 ecbd9d50 00000000 00000014 8c977ea0 84272c00 9ca0: 00000000 00000000 ecbd9d14 ecbd9cb8 8047f368 804bd90c 8049445c 80479d1c 9cc0: ecbd9d84 840f0000 00000000 00000000 01df1000 83f11200 ecbd9d14 ecbd9ce8 9ce0: 84272c00 804943e4 8c889003 00000214 840f0000 01df1000 8c977ea0 01df1000 9d00: 83f11200 00000000 ecbd9dc4 ecbd9d18 80480c4c 8047f174 83f11240 ffffffff 9d20: ecbd9d88 01df14e8 81c66394 8c9ddc0c 83f11240 01df1000 01e11fff 8c9ddc0c 9d40: 00000000 ffffffff ecbd9d50 ecbd9e48 8c977ea0 00000cc0 00001df1 01df1000 9d60: 01df1000 00000a14 8c18e070 8c0c32c0 00001480 00000000 00000000 00000000 9d80: 00000000 ddfbc358 00000000 00000000 ecbd9dc4 fdd24046 80480308 ecbd9e48 9da0: 01df14e8 00000214 00000207 01df1000 83f11200 00000007 ecbd9e0c ecbd9dc8 9dc0: 80215d94 80480880 dddd0280 840f0000 a3e95190 a79b44e4 ecbd9e04 840f0000 9de0: 82c02600 8261d0e0 00000207 01df14e8 ecbd9e48 80215c4c 840f0000 00000109 9e00: ecbd9e44 ecbd9e10 802161dc 80215c58 8080ca8c 00000000 00000000 00000000 9e20: 00000000 81848bcc 00000013 ffffffff ecbd9e7c 80200288 ecbd9f44 ecbd9e48 9e40: 80200ae4 802161b0 ecbd9ed0 01df14e8 ffffffe8 00000000 840f0000 ecbd9ee0 9e60: ecbd9fb0 01df14e0 80200288 840f0000 00000109 ecbd9f44 00000018 ecbd9e94 9e80: 80426ddc 81848bcc 00000013 ffffffff 8089c028 ecbd9ee0 ecbd9fb0 80200288 9ea0: 840f0000 ecbd9ed0 00000008 00000000 840f0000 80426ddc 840f0000 00000000 9ec0: 00000001 0000c350 0007ad28 00000000 00000000 00000000 00000000 00000000 9ee0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9f00: 802fb878 dddc7340 00000000 00000000 00000000 fdd24046 8089c028 840f0000 9f20: ecbd9fb0 80200288 00000109 80200288 840f0000 00000109 ecbd9fac ecbd9f48 9f40: 8020bc18 80426c54 80307668 802fd80c 00000000 81a04f98 ecbd9fa4 ecbd9f68 9f60: 803097bc 80307618 00000000 00000000 000f4240 00000000 00000000 fdd24046 9f80: 00000000 fdd24046 00000000 7e9b2534 00000000 00000109 80200288 840f0000 9fa0: 00000000 ecbd9fb0 80200088 8020bb2c 00000000 00000000 7e9b253c 7e9b2534 9fc0: 00000000 7e9b2534 00000000 00000109 00000000 00000000 7e9b2670 000008d5 9fe0: 00000000 7e9b2530 00000001 0007ad28 20000010 00000000 00000000 00000000 Call trace: [<807e847c>] (sg_init_one) from [<804c3dd4>] (zswap_decompress+0xbc/0x208 mm/zswap.c:1089) r7:82c0cb40 r6:def5cf7c r5:8c1a6280 r4:ff7e7efc [<804c3d18>] (zswap_decompress) from [<804c6a18>] (zswap_load+0x15c/0x198 mm/zswap.c:1637) r9:8496fd80 r8:8496fd80 r7:8496fd84 r6:def5cf7c r5:00000010 r4:8c1a6280 [<804c68bc>] (zswap_load) from [<804bbbf4>] (swap_read_folio+0xa8/0x498 mm/page_io.c:518) r9:84272c00 r8:840f0000 r7:00000000 r6:ecbd9be4 r5:00000000 r4:def5cf7c [<804bbb4c>] (swap_read_folio) from [<804bd614>] (swap_cluster_readahead+0x1c4/0x34c mm/swap_state.c:684) r10:00000000 r9:00000017 r8:ecbd9be3 r7:00000000 r6:00000000 r5:00100cca r4:00000010 [<804bd450>] (swap_cluster_readahead) from [<804bd968>] (swapin_readahead+0x68/0x4a8 mm/swap_state.c:904) r10:ecbd9d50 r9:00000000 r8:00100cca r7:8c977ea0 r6:00000014 r5:00000000 r4:00000001 [<804bd900>] (swapin_readahead) from [<8047f368>] (do_swap_page+0x200/0xcc4 mm/memory.c:4046) r10:00000000 r9:00000000 r8:84272c00 r7:8c977ea0 r6:00000014 r5:00000000 r4:ecbd9d50 [<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 r9:83f11200 r8:01df1000 r7:8c977ea0 r6:01df1000 r5:840f0000 r4:00000214 [<80480874>] (handle_mm_fault) from [<80215d94>] (do_page_fault+0x148/0x3a8 arch/arm/mm/fault.c:333) r10:00000007 r9:83f11200 r8:01df1000 r7:00000207 r6:00000214 r5:01df14e8 r4:ecbd9e48 [<80215c4c>] (do_page_fault) from [<802161dc>] (do_DataAbort+0x38/0xa8 arch/arm/mm/fault.c:565) r10:00000109 r9:840f0000 r8:80215c4c r7:ecbd9e48 r6:01df14e8 r5:00000207 r4:8261d0e0 [<802161a4>] (do_DataAbort) from [<80200ae4>] (__dabt_svc+0x44/0x60 arch/arm/kernel/entry-armv.S:212) Exception stack(0xecbd9e48 to 0xecbd9e90) 9e40: ecbd9ed0 01df14e8 ffffffe8 00000000 840f0000 ecbd9ee0 9e60: ecbd9fb0 01df14e0 80200288 840f0000 00000109 ecbd9f44 00000018 ecbd9e94 9e80: 80426ddc 81848bcc 00000013 ffffffff r8:80200288 r7:ecbd9e7c r6:ffffffff r5:00000013 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 r9:840f0000 r8:80200288 r7:00000109 r6:80200288 r5:ecbd9fb0 r4:840f0000 [<8020bb20>] (do_work_pending) from [<80200088>] (slow_work_pending+0xc/0x24) Exception stack(0xecbd9fb0 to 0xecbd9ff8) 9fa0: 00000000 00000000 7e9b253c 7e9b2534 9fc0: 00000000 7e9b2534 00000000 00000109 00000000 00000000 7e9b2670 000008d5 9fe0: 00000000 7e9b2530 00000001 0007ad28 20000010 00000000 r9:840f0000 r8:80200288 r7:00000109 r6:00000000 r5:7e9b2534 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