------------[ cut here ]------------ kernel BUG at include/linux/scatterlist.h:187! Internal error: Oops - BUG: 0 [#1] PREEMPT SMP ARM Modules linked in: CPU: 1 PID: 16624 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 : eb661ad0 ip : eb661b08 fp : eb661aec r10: 00000000 r9 : ffedc000 r8 : ff7fbf1c r7 : 00000e85 r6 : eb661af0 r5 : 8998d758 r4 : ffedc000 r3 : df000000 r2 : ffffffd8 r1 : 00000000 r0 : eb661af0 Flags: Nzcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none Control: 30c5387d Table: 84107e40 DAC: 00000000 Register r0 information: 2-page vmalloc region starting at 0xeb660000 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 8998d758 pointer offset 0 size 40 Register r6 information: 2-page vmalloc region starting at 0xeb660000 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 0xeb660000 allocated at kernel_clone+0xac/0x3cc kernel/fork.c:2796 Register r12 information: 2-page vmalloc region starting at 0xeb660000 allocated at kernel_clone+0xac/0x3cc kernel/fork.c:2796 Process syz-executor.0 (pid: 16624, stack limit = 0xeb660000) Stack: (0xeb661ad0 to 0xeb662000) 1ac0: ff7fbefc 8998d758 deb78ebc 83cbf9c0 1ae0: eb661b4c eb661af0 804c3dd4 807e8488 00000002 00000000 00000000 00000000 1b00: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 1b20: 0000009a 30df321f 8998d758 0000009a deb78ebc 843da8c4 843da8c0 843da8c0 1b40: eb661b74 eb661b50 804c6a18 804c3d24 deb78ebc 00000000 eb661be4 00000000 1b60: 83769800 84212d00 eb661bc4 eb661b78 804bbbf4 804c68c8 804bd118 802e2798 1b80: eb661ba8 00000000 00100cca 00000000 00000000 30df321f 81897018 0000009a 1ba0: 00100cca 00000000 00000000 eb661be3 0000009f 00000000 eb661c3c eb661bc8 1bc0: 804bd614 804bbb58 eb661be3 00000000 eb661bf8 deb78ebc 0000009c 0000009c 1be0: 01000001 00000000 83c81680 00000000 1139dff0 0000016a 00010001 00000100 1c00: eb661c00 eb661c00 81875270 30df321f 00000406 00000001 00000000 0000009c 1c20: 8474fe40 00100cca 00000000 eb661d50 eb661cb4 eb661c40 804bd968 804bd45c 1c40: 00000000 30df321f 00000001 eb661d50 00000000 00000000 eb661c8c eb661c68 1c60: 8042e9b0 8042e804 eb661d50 8260cac8 8474fe40 00dd5000 84212d00 00000000 1c80: eb661cb4 30df321f 804bcde8 eb661d50 00000000 0000009c 8474fe40 84212d00 1ca0: 00000000 00000000 eb661d14 eb661cb8 8047f368 804bd90c 8049445c 80479d1c 1cc0: eb661d84 83769800 00000000 00000000 00dd5000 89820c00 eb661d14 eb661ce8 1ce0: 84212d00 804943e4 e37bc003 00000214 83769800 00dd5000 8474fe40 00dd5000 1d00: 89820c00 00000000 eb661dc4 eb661d18 80480c4c 8047f174 89820c40 ffffffff 1d20: eb661d88 00dd54e8 81c66394 8951c40c 89820c40 00dd5000 00df5fff 8951c40c 1d40: 00000000 ffffffff eb661d50 eb661e48 8474fe40 00000cc0 00000dd5 00dd5000 1d60: 00dd5000 00000a14 895b9030 84107e40 00009c80 00000000 00000000 00000000 1d80: 00000000 debf6684 00000000 00000000 eb661dc4 30df321f 80480308 eb661e48 1da0: 00dd54e8 00000214 00000207 00dd5000 89820c00 00000007 eb661e0c eb661dc8 1dc0: 80215d94 80480880 ddde4280 83769800 a3ecc9e8 140aa1fe eb661e04 83769800 1de0: 82c02600 8261d0e0 00000207 00dd54e8 eb661e48 80215c4c 83769800 00000109 1e00: eb661e44 eb661e10 802161dc 80215c58 8080ca8c 00000000 00000000 00000000 1e20: 00000000 81848bcc 00000113 ffffffff eb661e7c 80200288 eb661f44 eb661e48 1e40: 80200ae4 802161b0 eb661ed0 00dd54e8 ffffffe8 00000000 83769800 eb661ee0 1e60: eb661fb0 00dd54e0 80200288 83769800 00000109 eb661f44 00000018 eb661e94 1e80: 80426ddc 81848bcc 00000113 ffffffff 8089c028 eb661ee0 eb661fb0 80200288 1ea0: 83769800 eb661ed0 00000008 00000000 83769800 80426ddc 83769800 00000000 1ec0: 00000001 0000c350 0007ad28 00000000 00000000 00000000 00000000 00000000 1ee0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 1f00: 802fb878 ddddb340 00000000 00000000 00000000 30df321f 8089c028 83769800 1f20: eb661fb0 80200288 00000109 80200288 83769800 00000109 eb661fac eb661f48 1f40: 8020bc18 80426c54 80307668 802fd80c 00000000 81a04f98 eb661fa4 eb661f68 1f60: 803097bc 80307618 00000000 00000000 000f4240 00000000 00000000 30df321f 1f80: 00000000 30df321f 00000000 7ed9c534 00000000 00000109 80200288 83769800 1fa0: 00000000 eb661fb0 80200088 8020bb2c 00000000 00000000 7ed9c53c 7ed9c534 1fc0: 00000000 7ed9c534 00000000 00000109 00000000 00000000 7ed9c670 00000c04 1fe0: 00000000 7ed9c530 00000001 0007ad28 20000010 00000000 00000000 00000000 Call trace: [<807e847c>] (sg_init_one) from [<804c3dd4>] (zswap_decompress+0xbc/0x208 mm/zswap.c:1089) r7:83cbf9c0 r6:deb78ebc r5:8998d758 r4:ff7fbefc [<804c3d18>] (zswap_decompress) from [<804c6a18>] (zswap_load+0x15c/0x198 mm/zswap.c:1637) r9:843da8c0 r8:843da8c0 r7:843da8c4 r6:deb78ebc r5:0000009a r4:8998d758 [<804c68bc>] (zswap_load) from [<804bbbf4>] (swap_read_folio+0xa8/0x498 mm/page_io.c:518) r9:84212d00 r8:83769800 r7:00000000 r6:eb661be4 r5:00000000 r4:deb78ebc [<804bbb4c>] (swap_read_folio) from [<804bd614>] (swap_cluster_readahead+0x1c4/0x34c mm/swap_state.c:684) r10:00000000 r9:0000009f r8:eb661be3 r7:00000000 r6:00000000 r5:00100cca r4:0000009a [<804bd450>] (swap_cluster_readahead) from [<804bd968>] (swapin_readahead+0x68/0x4a8 mm/swap_state.c:904) r10:eb661d50 r9:00000000 r8:00100cca r7:8474fe40 r6:0000009c r5:00000000 r4:00000001 [<804bd900>] (swapin_readahead) from [<8047f368>] (do_swap_page+0x200/0xcc4 mm/memory.c:4046) r10:00000000 r9:00000000 r8:84212d00 r7:8474fe40 r6:0000009c r5:00000000 r4:eb661d50 [<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 r9:89820c00 r8:00dd5000 r7:8474fe40 r6:00dd5000 r5:83769800 r4:00000214 [<80480874>] (handle_mm_fault) from [<80215d94>] (do_page_fault+0x148/0x3a8 arch/arm/mm/fault.c:333) r10:00000007 r9:89820c00 r8:00dd5000 r7:00000207 r6:00000214 r5:00dd54e8 r4:eb661e48 [<80215c4c>] (do_page_fault) from [<802161dc>] (do_DataAbort+0x38/0xa8 arch/arm/mm/fault.c:565) r10:00000109 r9:83769800 r8:80215c4c r7:eb661e48 r6:00dd54e8 r5:00000207 r4:8261d0e0 [<802161a4>] (do_DataAbort) from [<80200ae4>] (__dabt_svc+0x44/0x60 arch/arm/kernel/entry-armv.S:212) Exception stack(0xeb661e48 to 0xeb661e90) 1e40: eb661ed0 00dd54e8 ffffffe8 00000000 83769800 eb661ee0 1e60: eb661fb0 00dd54e0 80200288 83769800 00000109 eb661f44 00000018 eb661e94 1e80: 80426ddc 81848bcc 00000113 ffffffff r8:80200288 r7:eb661e7c 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 r9:83769800 r8:80200288 r7:00000109 r6:80200288 r5:eb661fb0 r4:83769800 [<8020bb20>] (do_work_pending) from [<80200088>] (slow_work_pending+0xc/0x24) Exception stack(0xeb661fb0 to 0xeb661ff8) 1fa0: 00000000 00000000 7ed9c53c 7ed9c534 1fc0: 00000000 7ed9c534 00000000 00000109 00000000 00000000 7ed9c670 00000c04 1fe0: 00000000 7ed9c530 00000001 0007ad28 20000010 00000000 r9:83769800 r8:80200288 r7:00000109 r6:00000000 r5:7ed9c534 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