------------[ 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: 11581 Comm: syz-executor.1 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: 80000013 sp : dfc29ad0 ip : dfc29b08 fp : dfc29aec r10: 00000000 r9 : ffefd804 r8 : ff7e7f1c r7 : 0000027f r6 : dfc29af0 r5 : 8d919780 r4 : ffefd804 r3 : df000000 r2 : ffffffd8 r1 : 00000000 r0 : dfc29af0 Flags: Nzcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: 30c5387d Table: 89066fc0 DAC: fffffffd Register r0 information: 2-page vmalloc region starting at 0xdfc28000 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 8d919780 pointer offset 0 size 40 Register r6 information: 2-page vmalloc region starting at 0xdfc28000 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 0xdfc28000 allocated at kernel_clone+0xac/0x3cc kernel/fork.c:2796 Register r12 information: 2-page vmalloc region starting at 0xdfc28000 allocated at kernel_clone+0xac/0x3cc kernel/fork.c:2796 Process syz-executor.1 (pid: 11581, stack limit = 0xdfc28000) Stack: (0xdfc29ad0 to 0xdfc2a000) 9ac0: ff7e7efc 8d919780 dec6867c 841e8c40 9ae0: dfc29b4c dfc29af0 804c3dd4 807e8488 00000002 00000000 00000000 00000000 9b00: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9b20: 00000028 5793f33a 8d919780 00000028 dec6867c 842c21c4 842c21c0 842c21c0 9b40: dfc29b74 dfc29b50 804c6a18 804c3d24 dec6867c 00000000 dfc29be4 00000000 9b60: 83c94800 83fa2400 dfc29bc4 dfc29b78 804bbbf4 804c68c8 804bd118 802e2798 9b80: c261710a 00000000 00100cca 00000000 00000000 5793f33a ddde42c0 00000028 9ba0: 00100cca 00000000 00000000 dfc29be3 0000002f 00000000 dfc29c3c dfc29bc8 9bc0: 804bd614 804bbb58 dfc29be3 00000000 8376d6a8 dec6867c 00000028 00000028 9be0: 0128e97c 00000000 00000000 00000000 00000000 00000000 00000001 00000000 9c00: dfc29c00 dfc29c00 81875270 5793f33a 00000406 00000001 00000000 00000028 9c20: 8db8b7e0 00100cca 00000000 dfc29d50 dfc29cb4 dfc29c40 804bd968 804bd45c 9c40: 00000000 5793f33a 00000001 dfc29d50 00000000 00000000 dfc29c8c dfc29c68 9c60: 8042e9b0 8042e804 dfc29d50 8260cac8 8db8b7e0 02034000 83fa2400 00000000 9c80: dfc29cb4 5793f33a 804bcde8 dfc29d50 00000000 00000028 8db8b7e0 83fa2400 9ca0: 00000000 00000000 dfc29d14 dfc29cb8 8047f368 804bd90c 8049445c 80479d1c 9cc0: dfc29d84 83c94800 00000000 00000000 02034000 8928c900 dfc29d14 dfc29ce8 9ce0: 83fa2400 804943e4 fece9003 00000214 83c94800 02034000 8db8b7e0 02034000 9d00: 8928c900 00000000 dfc29dc4 dfc29d18 80480c4c 8047f174 8928c940 ffffffff 9d20: dfc29d88 020344e8 81c66394 843d150c 8928c940 02034000 02054fff 843d150c 9d40: 00000000 ffffffff dfc29d50 dfc29e48 8db8b7e0 00000cc0 00002034 02034000 9d60: 02034000 00000a14 88d39080 89066fc0 00002880 00000000 00000000 00000000 9d80: 00000000 defce0d8 00000000 00000000 dfc29dc4 5793f33a 80480308 dfc29e48 9da0: 020344e8 00000214 00000207 02034000 8928c900 00000007 dfc29e0c dfc29dc8 9dc0: 80215d94 80480880 dddd0280 83c94800 a3e94e10 41712f4a dfc29e04 83c94800 9de0: 82c02600 8261d0e0 00000207 020344e8 dfc29e48 80215c4c 83c94800 00000109 9e00: dfc29e44 dfc29e10 802161dc 80215c58 8080ca8c 00000000 00000000 00000000 9e20: 00000000 81848bcc 00000113 ffffffff dfc29e7c 80200288 dfc29f44 dfc29e48 9e40: 80200ae4 802161b0 dfc29ed0 020344e8 ffffffe8 00000000 83c94800 dfc29ee0 9e60: dfc29fb0 020344e0 80200288 83c94800 00000109 dfc29f44 00000018 dfc29e94 9e80: 80426ddc 81848bcc 00000113 ffffffff 8089c028 dfc29ee0 dfc29fb0 80200288 9ea0: 83c94800 dfc29ed0 00000008 00000000 83c94800 80426ddc 83c94800 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 5793f33a 8089c028 83c94800 9f20: dfc29fb0 80200288 00000109 80200288 83c94800 00000109 dfc29fac dfc29f48 9f40: 8020bc18 80426c54 80307668 802fd80c 00000000 81a04f98 dfc29fa4 dfc29f68 9f60: 803097bc 80307618 00000000 00000000 000f4240 00000000 00000000 5793f33a 9f80: 00000000 5793f33a 00000000 7ea07534 00000000 00000109 80200288 83c94800 9fa0: 00000000 dfc29fb0 80200088 8020bb2c 00000000 00000000 7ea0753c 7ea07534 9fc0: 00000000 7ea07534 00000000 00000109 00000000 00000000 7ea07670 00000f45 9fe0: 00000000 7ea07530 00000001 0007ad28 20000010 00000000 00000000 00000000 Call trace: [<807e847c>] (sg_init_one) from [<804c3dd4>] (zswap_decompress+0xbc/0x208 mm/zswap.c:1089) r7:841e8c40 r6:dec6867c r5:8d919780 r4:ff7e7efc [<804c3d18>] (zswap_decompress) from [<804c6a18>] (zswap_load+0x15c/0x198 mm/zswap.c:1637) r9:842c21c0 r8:842c21c0 r7:842c21c4 r6:dec6867c r5:00000028 r4:8d919780 [<804c68bc>] (zswap_load) from [<804bbbf4>] (swap_read_folio+0xa8/0x498 mm/page_io.c:518) r9:83fa2400 r8:83c94800 r7:00000000 r6:dfc29be4 r5:00000000 r4:dec6867c [<804bbb4c>] (swap_read_folio) from [<804bd614>] (swap_cluster_readahead+0x1c4/0x34c mm/swap_state.c:684) r10:00000000 r9:0000002f r8:dfc29be3 r7:00000000 r6:00000000 r5:00100cca r4:00000028 [<804bd450>] (swap_cluster_readahead) from [<804bd968>] (swapin_readahead+0x68/0x4a8 mm/swap_state.c:904) r10:dfc29d50 r9:00000000 r8:00100cca r7:8db8b7e0 r6:00000028 r5:00000000 r4:00000001 [<804bd900>] (swapin_readahead) from [<8047f368>] (do_swap_page+0x200/0xcc4 mm/memory.c:4046) r10:00000000 r9:00000000 r8:83fa2400 r7:8db8b7e0 r6:00000028 r5:00000000 r4:dfc29d50 [<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 r9:8928c900 r8:02034000 r7:8db8b7e0 r6:02034000 r5:83c94800 r4:00000214 [<80480874>] (handle_mm_fault) from [<80215d94>] (do_page_fault+0x148/0x3a8 arch/arm/mm/fault.c:333) r10:00000007 r9:8928c900 r8:02034000 r7:00000207 r6:00000214 r5:020344e8 r4:dfc29e48 [<80215c4c>] (do_page_fault) from [<802161dc>] (do_DataAbort+0x38/0xa8 arch/arm/mm/fault.c:565) r10:00000109 r9:83c94800 r8:80215c4c r7:dfc29e48 r6:020344e8 r5:00000207 r4:8261d0e0 [<802161a4>] (do_DataAbort) from [<80200ae4>] (__dabt_svc+0x44/0x60 arch/arm/kernel/entry-armv.S:212) Exception stack(0xdfc29e48 to 0xdfc29e90) 9e40: dfc29ed0 020344e8 ffffffe8 00000000 83c94800 dfc29ee0 9e60: dfc29fb0 020344e0 80200288 83c94800 00000109 dfc29f44 00000018 dfc29e94 9e80: 80426ddc 81848bcc 00000113 ffffffff r8:80200288 r7:dfc29e7c 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 r9:83c94800 r8:80200288 r7:00000109 r6:80200288 r5:dfc29fb0 r4:83c94800 [<8020bb20>] (do_work_pending) from [<80200088>] (slow_work_pending+0xc/0x24) Exception stack(0xdfc29fb0 to 0xdfc29ff8) 9fa0: 00000000 00000000 7ea0753c 7ea07534 9fc0: 00000000 7ea07534 00000000 00000109 00000000 00000000 7ea07670 00000f45 9fe0: 00000000 7ea07530 00000001 0007ad28 20000010 00000000 r9:83c94800 r8:80200288 r7:00000109 r6:00000000 r5:7ea07534 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