Extracting prog: 2m54.972732249s Minimizing prog: 10m48.754025765s Simplifying prog options: 0s Extracting C: 1m43.933910389s Simplifying C: 5m40.687797416s 30 programs, timeouts [30s 1m40s 6m0s] extracting reproducer from 30 programs first checking the prog from the crash report single: executing 1 programs separately with timeout 30s testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$char_usb-syz_usb_disconnect-read$char_usb detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000180)=ANY=[@ANYBLOB="1201fb0019030320d812010079de01ec020109021b0001000003000904000001785ecc00090585020004"], 0x0) r1 = syz_open_dev$char_usb(0xc, 0xb4, 0x0) syz_usb_disconnect(r0) read$char_usb(r1, 0x0, 0x0) program did not crash single: failed to extract reproducer bisect: bisecting 30 programs with base timeout 30s testing program (duration=37s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 4] detailed listing: executing program 1: r0 = syz_usb_connect(0x0, 0x24, &(0x7f0000000000)={{0x12, 0x1, 0x250, 0xd2, 0x87, 0x49, 0x40, 0x1740, 0x9707, 0x34de, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0x0, 0x0, 0x0, 0x0, 0x25, 0x98}}]}}]}}, &(0x7f0000000500)={0x0, 0x0, 0xc, 0x0}) syz_usb_disconnect(r0) syz_usb_connect$uac1(0x0, 0x71, &(0x7f00000039c0)={{0x12, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1d6b, 0x101, 0x40, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x5f, 0x3, 0x1, 0x0, 0x0, 0x0, {{0x9, 0x4, 0x0, 0x0, 0x0, 0x1, 0x1, 0x0, 0x0, {{0xa, 0x24, 0x1, 0x100, 0x3}}}, {}, {0x9, 0x4, 0x1, 0x1, 0x1, 0x1, 0x2, 0x0, 0x0, {}, {{0x9, 0x5, 0x1, 0x9, 0x0, 0x0, 0x0, 0x0, {0x7, 0x25, 0x1, 0x0, 0x3}}}}, {}, {0x9, 0x4, 0x2, 0x1, 0x1, 0x1, 0x2, 0x0, 0x0, {}, {{0x9, 0x5, 0x82, 0x9, 0x0, 0x0, 0x0, 0x0, {0x7}}}}}}}]}}, &(0x7f0000003bc0)={0x0, 0x0, 0x5, &(0x7f00000004c0)={0x5, 0xf, 0x5}}) syz_open_dev$evdev(0x0, 0x2, 0x862b01) executing program 2: r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000040)=ANY=[@ANYBLOB="12010000000018105e04da070000000000010902240001000000000904000009030000000921000000012222000905810308"], 0x0) syz_usb_control_io$hid(r0, 0x0, 0x0) syz_usb_control_io$hid(r0, &(0x7f0000000100)={0x24, 0x0, 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB="0022220000009603004700001000070c00a22bbc41ef0a1a7083000000000b0000170083de"], 0x0}, 0x0) syz_usb_ep_write(r0, 0x81, 0x1, &(0x7f0000000000)='B') executing program 0: r0 = syz_usb_connect(0x0, 0x24, &(0x7f0000000000)=ANY=[@ANYBLOB="12010000ab9fd540501d6f60d414000000010902120001000040000904"], 0x0) syz_usb_control_io$cdc_ncm(r0, 0x0, 0x0) syz_usb_control_io$cdc_ecm(r0, 0x0, &(0x7f0000000300)={0x1c, &(0x7f0000000180)={0x0, 0x0, 0xc, "8a51d501bad6b08681c74545"}, 0x0, 0x0}) syz_usb_control_io$cdc_ncm(r0, 0x0, &(0x7f00000006c0)={0x44, &(0x7f0000000480)={0x0, 0x0, 0x28, "e438bf3d024c5898306d3c43e70c9c907f632d33dd6818d70ea294f184211f60628fd1dc91baec88"}, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) executing program 3: r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000080)={{0x12, 0x1, 0x0, 0x0, 0x0, 0x0, 0x40, 0x56a, 0x17, 0x0, 0x0, 0x0, 0x0, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0x0, 0x0, 0x1, 0x3, 0x0, 0x0, 0x0, {0x9, 0x21, 0x0, 0x0, 0x1, {0x22, 0x5}}, {{{0x9, 0x5, 0x81, 0x3, 0x0, 0x0, 0x0, 0x8}}}}}]}}]}}, 0x0) syz_usb_control_io$hid(r0, 0x0, 0x0) syz_usb_control_io$cdc_ecm(r0, &(0x7f00000005c0)={0x14, &(0x7f00000001c0)={0x0, 0x0, 0x1f, {0x1f, 0x0, "6c46936e41c5838bf3d423ab969bf55238f351bee30e99fa41993bbee7"}}, &(0x7f00000000c0)={0x0, 0x3, 0x1a, {0x1a}}}, 0x0) write$char_usb(0xffffffffffffffff, 0x0, 0x0) executing program 1: r0 = syz_usb_connect(0x0, 0x4a, &(0x7f0000000040)=ANY=[@ANYBLOB="120100005520f010402038b1420104000001090238000100000000090400000371055900090582eb1000000001020009050276"], 0x0) syz_usb_control_io$hid(r0, &(0x7f0000000400)={0x24, 0x0, &(0x7f00000002c0)={0x0, 0x3, 0x2, @string={0x2}}, 0x0, 0x0}, 0x0) syz_usb_connect$cdc_ncm(0x2, 0x6e, &(0x7f00000009c0)={{0x12, 0x1, 0x200, 0x2, 0x0, 0x0, 0xff, 0x525, 0xa4a1, 0x40, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x5c, 0x2, 0x1, 0x4, 0x20, 0xf8, {{0x9, 0x4, 0x0, 0x0, 0x1, 0x2, 0xd, 0x0, 0x0, {{0x5}, {0x5, 0x24, 0x0, 0xa354}, {0xd, 0x24, 0xf, 0x1, 0x1cc9d48f, 0x5, 0x2, 0xff}, {0x6, 0x24, 0x1a, 0x9, 0xb}}, {{0x9, 0x5, 0x81, 0x3, 0x10, 0xff, 0xaa, 0x82}}}, {}, {0x9, 0x4, 0x1, 0x1, 0x2, 0x2, 0xd, 0x0, 0x0, "", {{{0x9, 0x5, 0x82, 0x2, 0x40, 0x9, 0xd4, 0x3}}, {{0x9, 0x5, 0x3, 0x2, 0x400, 0x4, 0x2, 0x81}}}}}}}]}}, 0x0) syz_usb_ep_write$ath9k_ep1(r0, 0x82, 0xc38, &(0x7f0000000080)=ANY=[]) executing program 4: r0 = syz_usb_connect(0x0, 0x4a, &(0x7f0000000040)=ANY=[@ANYBLOB="120100005520f010402038b1420104000001090238000100000000090400000371055900090582eb1000000001020009050276"], 0x0) write$char_usb(0xffffffffffffffff, &(0x7f0000000080)="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", 0x30b) syz_usb_ep_write$ath9k_ep1(r0, 0x82, 0xc38, &(0x7f0000000080)=ANY=[]) syz_usb_control_io$cdc_ecm(r0, &(0x7f0000000740)={0x14, 0x0, &(0x7f0000000700)={0x0, 0x3, 0x1a, {0x1a}}}, 0x0) executing program 2: r0 = syz_usb_connect(0x0, 0x24, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0xc6, 0x70, 0x6, 0x10, 0x14f7, 0x500, 0x4485, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0x0, 0x0, 0x0, 0xdf, 0x32, 0x66}}]}}]}}, 0x0) syz_usb_control_io(r0, 0x0, &(0x7f0000000700)={0x84, &(0x7f0000000240), 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) syz_open_dev$evdev(0x0, 0x2, 0x862b01) syz_usb_connect(0x3, 0x0, 0x0, 0x0) executing program 3: syz_usb_connect(0x0, 0x24, &(0x7f0000000140)={{0x12, 0x1, 0x0, 0x17, 0x73, 0x83, 0x8, 0x424, 0x9908, 0x9d1, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0x0, 0x0, 0x0, 0xcb, 0x3, 0xa}}]}}]}}, 0x0) syz_open_dev$evdev(&(0x7f00000001c0), 0x6, 0xc0041) r0 = syz_open_dev$evdev(&(0x7f0000000100), 0x0, 0x862b01) ioctl$EVIOCGMASK(r0, 0x4020940d, &(0x7f0000000040)={0x4, 0x38, 0x0}) executing program 0: r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000180)={{0x12, 0x1, 0x0, 0x0, 0x0, 0x0, 0x10, 0x17ef, 0x60a3, 0x0, 0x0, 0x0, 0x0, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0x0, 0x0, 0x1, 0x3, 0x0, 0x0, 0x0, {0x9, 0x21, 0x0, 0x0, 0x1, {0x22, 0x5}}, {{{0x9, 0x5, 0x81, 0x3, 0x0, 0x5}}}}}]}}]}}, 0x0) syz_usb_control_io(r0, 0x0, 0x0) syz_usb_control_io$hid(0xffffffffffffffff, 0x0, 0x0) syz_usb_control_io$hid(r0, &(0x7f00000000c0)={0x24, 0x0, 0x0, &(0x7f0000000000)={0x0, 0x22, 0x5, {[@main=@item_4={0x3, 0x0, 0xb, "4225c444"}]}}, 0x0}, 0x0) executing program 1: r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000000)={{0x12, 0x1, 0x0, 0x0, 0x0, 0x0, 0x40, 0x46d, 0xc094, 0x0, 0x0, 0x0, 0x0, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x10, 0x0, [{{0x9, 0x4, 0x0, 0x0, 0x1, 0x3, 0x0, 0x0, 0x0, {0x9, 0x21, 0xfffe, 0x0, 0x1, {0x22, 0x7}}, {{{0x9, 0x5, 0x81, 0x3, 0x40, 0x0, 0x0, 0x2}}}}}]}}]}}, 0x0) syz_usb_control_io(0xffffffffffffffff, 0x0, 0x0) syz_usb_control_io$hid(r0, 0x0, 0x0) syz_usb_control_io$hid(r0, &(0x7f0000000080)={0x24, 0x0, 0x0, &(0x7f00000000c0)={0x0, 0x22, 0x7, {[@main=@item_4={0x3, 0x0, 0xb, "04296623"}, @global=@item_012={0x1, 0x1, 0x6, "fd"}]}}, 0x0}, 0x0) executing program 4: r0 = syz_open_dev$evdev(&(0x7f0000000080), 0x0, 0x0) syz_usb_disconnect(r0) syz_usb_connect(0x0, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100001ddf8208c00712152230000000010902"], 0x0) ioctl$EVIOCRMFF(r0, 0x4004550f, 0x0) executing program 2: syz_usb_control_io$hid(0xffffffffffffffff, &(0x7f0000000600)={0x24, 0x0, 0x0, 0x0, &(0x7f0000000540)={0x0, 0x21, 0x9, {0x9, 0x21, 0xfeff, 0x0, 0x1, {0x22, 0x818}}}}, 0x0) r0 = syz_usb_connect(0x0, 0x4a, &(0x7f0000000040)=ANY=[@ANYBLOB="120100005520f010402038b1420104000001090238000100000000090400000371055900090582eb1000000001020009050276"], 0x0) syz_usb_ep_write$ath9k_ep1(r0, 0x82, 0xc38, &(0x7f0000000080)=ANY=[]) syz_usb_control_io$printer(r0, &(0x7f0000000280)={0x14, 0x0, &(0x7f0000000580)={0x0, 0x3, 0x2, @string={0x2}}}, 0x0) executing program 3: r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000980)={{0x12, 0x1, 0x0, 0xb, 0xf9, 0x8b, 0x40, 0x4f2, 0xaffc, 0x8861, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x1b, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0x0, 0x0, 0x1, 0xff, 0xff, 0xff, 0x0, [], [{{0x9, 0x5, 0x3, 0x6}}]}}]}}]}}, 0x0) syz_usb_control_io$printer(r0, 0x0, &(0x7f0000000440)={0x34, &(0x7f0000000080)={0x0, 0x0, 0x3, "19e7c2"}, 0x0, 0x0, 0x0, 0x0, 0x0}) syz_usb_control_io$hid(r0, 0x0, &(0x7f0000000040)={0x2c, &(0x7f0000000000)={0x0, 0x0, 0x1, "d1"}, 0x0, 0x0, 0x0, 0x0}) syz_usb_control_io$cdc_ncm(r0, 0x0, &(0x7f0000000500)={0x44, &(0x7f0000000200)={0x0, 0x0, 0x3, "8b764a"}, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) executing program 0: syz_usb_connect(0x0, 0x24, &(0x7f0000000000)={{0x12, 0x1, 0x0, 0x2, 0xb0, 0xf6, 0x8, 0x3f0, 0x2101, 0xe2cd, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0x0, 0x0, 0x0, 0xff, 0x2, 0x7e}}]}}]}}, 0x0) write$char_usb(0xffffffffffffffff, 0x0, 0x0) syz_usb_connect$cdc_ncm(0x0, 0x0, 0x0, 0x0) ioctl$EVIOCGABS2F(0xffffffffffffffff, 0x8018456f, 0x0) executing program 4: syz_usb_connect$uac1(0x4, 0x8a, &(0x7f0000000000)={{0x12, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1d6b, 0x101, 0x40, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x78, 0x3, 0x1, 0x0, 0x0, 0x0, {{0x9, 0x4, 0x0, 0x0, 0x0, 0x1, 0x1, 0x0, 0x0, {{}, [@processing_unit={0x9, 0x24, 0x7, 0x0, 0x0, 0x0, "bed1"}, @output_terminal={0x9}]}}, {}, {0x9, 0x4, 0x1, 0x1, 0x1, 0x1, 0x2, 0x0, 0x0, {}, {{0x9, 0x5, 0x1, 0x9, 0x0, 0x0, 0x0, 0x0, {0x7}}}}, {}, {0x9, 0x4, 0x2, 0x1, 0x1, 0x1, 0x2, 0x0, 0x0, {[@as_header={0x7}]}, {{0x9, 0x5, 0x82, 0x9, 0x0, 0x0, 0x0, 0x0, {0x7}}}}}}}]}}, 0x0) syz_usb_connect(0x0, 0x3d, &(0x7f0000000040)=ANY=[@ANYBLOB="120100004e826d4094225a4241d10102030109022b0001000000000904000002e964c2000905040000000000000705a6"], 0x0) syz_usb_control_io$uac1(0xffffffffffffffff, 0x0, 0x0) syz_usb_connect$uac1(0x0, 0x0, 0x0, 0x0) executing program 1: r0 = syz_usb_connect$cdc_ncm(0x0, 0x76, &(0x7f0000000240)=ANY=[@ANYBLOB="12010000020000402505a1a44000010203010902640002010000000904010001020d00e7052406000105240000000d240f0100000000000000000006241a00000008241c00000008000905810300020000000904010000020d000009040101"], 0x0) syz_usb_control_io$printer(r0, &(0x7f0000000000)={0x14, 0x0, &(0x7f0000000140)={0x0, 0x3, 0x5, @string={0x5, 0x3, '>M#'}}}, 0x0) syz_usb_control_io$cdc_ncm(r0, 0x0, 0x0) syz_usb_control_io$cdc_ncm(r0, 0x0, 0x0) executing program 0: r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0x0, 0x0, 0x0, 0x40, 0x1532, 0x11b, 0x0, 0x0, 0x0, 0x0, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0x0, 0x0, 0x4, 0x3, 0x0, 0x2, 0x0, {0x9, 0x21, 0x0, 0x0, 0x1, {0x22, 0x5}}, {{{0x9, 0x5, 0x81, 0x3, 0x8, 0x3}}}}}]}}]}}, 0x0) syz_usb_control_io$hid(r0, 0x0, 0x0) syz_usb_control_io(r0, &(0x7f0000000000)={0x2c, &(0x7f00000000c0)={0x0, 0xa, 0x5, {0x5, 0xe, '\x00\x00\x00'}}, 0x0, 0x0, 0x0, 0x0}, 0x0) syz_usb_control_io(r0, 0x0, 0x0) executing program 3: r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000000)={{0x12, 0x1, 0x0, 0x0, 0x0, 0x0, 0x8, 0x566, 0x3004, 0x0, 0x0, 0x0, 0x0, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0x0, 0x0, 0x1, 0x3, 0x0, 0x0, 0x0, {0x9, 0x21, 0x0, 0x0, 0x1, {0x22, 0x4f9}}}}]}}]}}, 0x0) syz_usb_connect(0x0, 0x24, &(0x7f0000000080)={{0x12, 0x1, 0x0, 0x7e, 0x9e, 0xb4, 0x0, 0x54c, 0x38, 0x16f5, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0x0, 0x0, 0x0, 0x8, 0xc5, 0x38}}]}}]}}, 0x0) syz_usb_control_io(r0, 0x0, 0x0) syz_usb_control_io$hid(r0, &(0x7f0000000340)={0x24, 0x0, 0x0, &(0x7f0000000040)=ANY=[@ANYBLOB="00220508"], 0x0}, 0x0) executing program 2: r0 = syz_usb_connect(0x0, 0x3f, &(0x7f0000000040)=ANY=[@ANYBLOB="11010000733336088dee1adb23610000000109022d0001100000000904000003fe03010009cd8d1f00020000000905050200067e001009058b1e20"], 0x0) syz_usb_control_io(r0, 0x0, &(0x7f0000000980)={0x84, &(0x7f0000000540), 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) r1 = syz_open_dev$char_usb(0xc, 0xb4, 0x0) ioctl$EVIOCGMASK(r1, 0x5b23, 0x0) executing program 4: r0 = syz_open_dev$hidraw(&(0x7f0000000b40), 0x9, 0x4b042) write$hidraw(r0, &(0x7f0000000bc0), 0x73336958c4e6a83a) ioctl$HIDIOCGRDESC(r0, 0x401c5820, &(0x7f0000001280)) ioctl$HIDIOCGRDESC(r0, 0x4030582a, &(0x7f0000000140)={0xd, "7954bbc8aae250bd23544617d5"}) executing program 4: r0 = syz_usb_connect(0x2, 0x24, &(0x7f0000000900)={{0x12, 0x1, 0xa697b3569f93dcde, 0xc6, 0x3c, 0xb7, 0x40, 0x1044, 0x7002, 0xf0ca, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0xf, 0x9, 0xa0, 0x8, [{{0x9, 0x4, 0xa8, 0x9, 0x0, 0x6, 0xd5, 0x16, 0xb}}]}}]}}, &(0x7f0000001080)={0x0, 0x0, 0x0, 0x0}) syz_usb_control_io$uac1(r0, &(0x7f0000000080)={0x14, 0x0, &(0x7f0000000040)={0x0, 0x3, 0x2, @string={0x2}}}, 0x0) syz_usb_control_io$cdc_ncm(r0, &(0x7f0000000440)={0x14, 0x0, &(0x7f0000000400)={0x0, 0x3, 0x1a, {0x1a}}}, 0x0) syz_usb_control_io$uac1(r0, 0x0, &(0x7f0000000b80)={0x44, &(0x7f0000000940)={0x20, 0x6, 0x4, "b70ccb87"}, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) executing program 1: r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000000)={{0x12, 0x1, 0x0, 0x0, 0x0, 0x0, 0x20, 0x1e7d, 0x2d51, 0x0, 0x0, 0x0, 0x0, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0x0, 0x0, 0x1, 0x3, 0x0, 0x2, 0x0, {0x9, 0x21, 0x0, 0x0, 0x1, {0x22, 0x5}}}}]}}]}}, 0x0) syz_usb_control_io(r0, 0x0, 0x0) syz_usb_control_io(r0, &(0x7f00000003c0)={0x2c, &(0x7f0000000c40)=ANY=[@ANYBLOB='\x00\x00W'], 0x0, 0x0, 0x0, 0x0}, 0x0) syz_usb_control_io$hid(r0, 0x0, &(0x7f0000000080)={0x2c, 0x0, 0x0, 0x0, &(0x7f0000000500)=ANY=[@ANYBLOB="20017c"], 0x0}) executing program 0: r0 = syz_usb_connect$hid(0x5, 0x36, &(0x7f0000000140)={{0x12, 0x1, 0x0, 0x0, 0x0, 0x0, 0x8, 0x56e, 0xfe, 0x0, 0x0, 0x0, 0x0, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0xb0, 0x0, [{{0x9, 0x4, 0x0, 0x0, 0x8, 0x3, 0x0, 0x0, 0x0, {0x9, 0x21, 0x0, 0x0, 0x1, {0x22, 0x46}}, {{{0x9, 0x5, 0x81, 0x3, 0x0, 0x5}}}}}]}}]}}, 0x0) syz_usb_control_io(r0, 0x0, 0x0) syz_usb_control_io(r0, &(0x7f00000003c0)={0x2c, &(0x7f0000000040)=ANY=[@ANYBLOB="0000460000004600a7ea3163fdfa964e2c8d95"], 0x0, 0x0, 0x0, 0x0}, 0x0) syz_usb_control_io(0xffffffffffffffff, 0x0, 0x0) executing program 3: syz_usb_connect$cdc_ncm(0x0, 0x72, &(0x7f0000000bc0)=ANY=[@ANYBLOB="1201000002000040257d15a4400001040001090260004201000000090400000102090000052406000105240000000d240f01000004eaffffff1e0006031a00000804800200090581", @ANYBLOB="f7"], 0x0) syz_usb_connect(0x0, 0x3f, 0x0, 0x0) syz_usb_control_io(0xffffffffffffffff, 0x0, 0x0) syz_open_dev$char_usb(0xc, 0xb4, 0x0) executing program 2: syz_usb_connect(0x0, 0x2d, &(0x7f00000003c0)=ANY=[@ANYBLOB="120100009ac0b620110f211066865578ac0109029c000100000400090400bf900b64ea00090587033b"], 0x0) syz_usb_connect(0x5, 0x3f, 0x0, 0x0) r0 = syz_open_dev$char_usb(0xc, 0xb4, 0x0) read$char_usb(r0, 0x0, 0x0) executing program 1: r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000000)={{0x12, 0x1, 0x0, 0x0, 0x0, 0x0, 0x40, 0x5543, 0x3, 0x0, 0x0, 0x0, 0x0, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0x0, 0x0, 0x1, 0x3, 0x0, 0x0, 0x0, {0x9, 0x21, 0x0, 0x0, 0x1, {0x22, 0x8}}}}]}}]}}, 0x0) syz_usb_control_io$hid(r0, 0x0, 0x0) syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000080)=ANY=[@ANYBLOB="12010000000000406d0486"], 0x0) syz_usb_control_io$hid(r0, &(0x7f0000000180)={0x24, 0x0, 0x0, &(0x7f0000000080)=ANY=[@ANYBLOB='\x00\"\n'], 0x0}, 0x0) executing program 4: r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000180)=ANY=[@ANYBLOB="1201fb0019030320d812010079de01ec020109021b0001000003000904000001785ecc00090585020004"], 0x0) r1 = syz_open_dev$char_usb(0xc, 0xb4, 0x0) syz_usb_disconnect(r0) read$char_usb(r1, 0x0, 0x0) executing program 3: r0 = syz_usb_connect$hid(0x3, 0x36, &(0x7f0000000100)={{0x12, 0x1, 0x0, 0x0, 0x0, 0x0, 0x8, 0x1532, 0x10e, 0x0, 0x0, 0x0, 0x0, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0x0, 0x0, 0x1, 0x3, 0x0, 0x0, 0x0, {0x9, 0x21, 0x0, 0xf, 0x1, {0x22, 0x8}}, {{{0x9, 0x5, 0x81, 0x3, 0x0, 0xc}}}}}]}}]}}, 0x0) syz_usb_control_io$hid(r0, 0x0, 0x0) syz_usb_control_io$hid(r0, &(0x7f0000000140)={0x24, 0x0, 0x0, &(0x7f0000000740)={0x0, 0x22, 0x8, {[@global=@item_4={0x3, 0x1, 0xa, "f2904fbd"}, @local=@item_012={0x2, 0x2, 0x0, "02e4"}]}}, 0x0}, 0x0) syz_usb_control_io(0xffffffffffffffff, 0x0, 0x0) executing program 2: r0 = syz_usb_connect(0x0, 0x36, &(0x7f00000001c0)=ANY=[@ANYBLOB="12010000ad183840f30c02102c4f000000030902240001000000000904fa00"], 0x0) syz_usb_disconnect(r0) syz_usb_connect(0x5, 0x24, &(0x7f0000000040)=ANY=[], 0x0) executing program 0: r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000080)={{0x12, 0x1, 0x0, 0x0, 0x0, 0x0, 0x40, 0x1b96, 0x12, 0x0, 0x0, 0x0, 0x0, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0x0, 0x0, 0x1, 0x3, 0x0, 0x0, 0x0, {0x9, 0x21, 0x7, 0x0, 0x1, {0x22, 0x7}}}}]}}]}}, 0x0) syz_usb_control_io$hid(r0, 0x0, 0x0) syz_usb_control_io(r0, &(0x7f0000000040)={0x2c, &(0x7f00000000c0)={0x20, 0x21, 0x7, {0x7, 0x0, "406116c99e"}}, 0x0, 0x0, 0x0, 0x0}, 0x0) syz_usb_control_io$hid(r0, 0x0, &(0x7f0000000000)={0x2c, 0x0, 0x0, 0x0, &(0x7f0000000100), 0x0}) program did not crash replaying the whole log did not cause a kernel crash single: executing 1 programs separately with timeout 1m40s testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$char_usb-syz_usb_disconnect-read$char_usb detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000180)=ANY=[@ANYBLOB="1201fb0019030320d812010079de01ec020109021b0001000003000904000001785ecc00090585020004"], 0x0) r1 = syz_open_dev$char_usb(0xc, 0xb4, 0x0) syz_usb_disconnect(r0) read$char_usb(r1, 0x0, 0x0) program crashed: possible deadlock in usb_deregister_dev single: successfully extracted reproducer found reproducer with 4 syscalls minimizing guilty program testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$char_usb-syz_usb_disconnect detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000180)=ANY=[@ANYBLOB="1201fb0019030320d812010079de01ec020109021b0001000003000904000001785ecc00090585020004"], 0x0) syz_open_dev$char_usb(0xc, 0xb4, 0x0) syz_usb_disconnect(r0) program crashed: possible deadlock in usb_deregister_dev testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$char_usb detailed listing: executing program 0: syz_usb_connect(0x0, 0x2d, &(0x7f0000000180)=ANY=[@ANYBLOB="1201fb0019030320d812010079de01ec020109021b0001000003000904000001785ecc00090585020004"], 0x0) syz_open_dev$char_usb(0xc, 0xb4, 0x0) program crashed: possible deadlock in chaoskey_release testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect detailed listing: executing program 0: syz_usb_connect(0x0, 0x2d, &(0x7f0000000180)=ANY=[@ANYBLOB="1201fb0019030320d812010079de01ec020109021b0001000003000904000001785ecc00090585020004"], 0x0) program did not crash testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$char_usb detailed listing: executing program 0: syz_open_dev$char_usb(0xc, 0xb4, 0x0) program did not crash testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$char_usb detailed listing: executing program 0: syz_usb_connect(0x0, 0x2d, 0x0, 0x0) syz_open_dev$char_usb(0xc, 0xb4, 0x0) program did not crash testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$char_usb detailed listing: executing program 0: syz_usb_connect(0x0, 0x2d, &(0x7f0000000180)=ANY=[@ANYBLOB], 0x0) syz_open_dev$char_usb(0xc, 0xb4, 0x0) program did not crash extracting C reproducer testing compiled C program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$char_usb program crashed: possible deadlock in usb_deregister_dev simplifying C reproducer testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$char_usb program crashed: possible deadlock in usb_deregister_dev testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$char_usb program crashed: possible deadlock in chaoskey_release testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$char_usb program crashed: possible deadlock in chaoskey_release testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$char_usb program crashed: possible deadlock in chaoskey_release testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$char_usb program crashed: possible deadlock in chaoskey_release testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$char_usb program crashed: possible deadlock in chaoskey_release reproducing took 21m8.348491068s repro crashed as (corrupted=false): raw-gadget.0 gadget.0: fail, usb_ep_enable returned -22 ============================================ WARNING: possible recursive locking detected 6.12.0-rc1-syzkaller-00027-g4a9fe2a8ac53 #0 Not tainted -------------------------------------------- syz-executor422/2647 is trying to acquire lock: ffffffff89b120e8 (chaoskey_list_lock){+.+.}-{3:3}, at: chaoskey_release+0x15d/0x2c0 drivers/usb/misc/chaoskey.c:322 but task is already holding lock: ffffffff89b120e8 (chaoskey_list_lock){+.+.}-{3:3}, at: chaoskey_release+0x7f/0x2c0 drivers/usb/misc/chaoskey.c:299 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(chaoskey_list_lock); lock(chaoskey_list_lock); *** DEADLOCK *** May be due to missing lock nesting notation 1 lock held by syz-executor422/2647: #0: ffffffff89b120e8 (chaoskey_list_lock){+.+.}-{3:3}, at: chaoskey_release+0x7f/0x2c0 drivers/usb/misc/chaoskey.c:299 stack backtrace: CPU: 0 UID: 0 PID: 2647 Comm: syz-executor422 Not tainted 6.12.0-rc1-syzkaller-00027-g4a9fe2a8ac53 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_deadlock_bug+0x2e3/0x410 kernel/locking/lockdep.c:3037 check_deadlock kernel/locking/lockdep.c:3089 [inline] validate_chain kernel/locking/lockdep.c:3891 [inline] __lock_acquire+0x2185/0x3ce0 kernel/locking/lockdep.c:5202 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5825 __mutex_lock_common kernel/locking/mutex.c:608 [inline] __mutex_lock+0x175/0x9c0 kernel/locking/mutex.c:752 chaoskey_release+0x15d/0x2c0 drivers/usb/misc/chaoskey.c:322 __fput+0x3f6/0xb60 fs/file_table.c:431 task_work_run+0x14e/0x250 kernel/task_work.c:228 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0xadd/0x2ce0 kernel/exit.c:939 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088 __do_sys_exit_group kernel/exit.c:1099 [inline] __se_sys_exit_group kernel/exit.c:1097 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fbb318b0409 Code: Unable to access opcode bytes at 0x7fbb318b03df. RSP: 002b:00007fff4868af08 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fbb318b0409 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 RBP: 00007fbb3192b370 R08: ffffffffffffffb8 R09: 00007fff4868ac77 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fbb3192b370 R13: 0000000000000000 R14: 00007fbb3192f080 R15: 00007fbb3187e670 final repro crashed as (corrupted=false): raw-gadget.0 gadget.0: fail, usb_ep_enable returned -22 ============================================ WARNING: possible recursive locking detected 6.12.0-rc1-syzkaller-00027-g4a9fe2a8ac53 #0 Not tainted -------------------------------------------- syz-executor422/2647 is trying to acquire lock: ffffffff89b120e8 (chaoskey_list_lock){+.+.}-{3:3}, at: chaoskey_release+0x15d/0x2c0 drivers/usb/misc/chaoskey.c:322 but task is already holding lock: ffffffff89b120e8 (chaoskey_list_lock){+.+.}-{3:3}, at: chaoskey_release+0x7f/0x2c0 drivers/usb/misc/chaoskey.c:299 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(chaoskey_list_lock); lock(chaoskey_list_lock); *** DEADLOCK *** May be due to missing lock nesting notation 1 lock held by syz-executor422/2647: #0: ffffffff89b120e8 (chaoskey_list_lock){+.+.}-{3:3}, at: chaoskey_release+0x7f/0x2c0 drivers/usb/misc/chaoskey.c:299 stack backtrace: CPU: 0 UID: 0 PID: 2647 Comm: syz-executor422 Not tainted 6.12.0-rc1-syzkaller-00027-g4a9fe2a8ac53 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_deadlock_bug+0x2e3/0x410 kernel/locking/lockdep.c:3037 check_deadlock kernel/locking/lockdep.c:3089 [inline] validate_chain kernel/locking/lockdep.c:3891 [inline] __lock_acquire+0x2185/0x3ce0 kernel/locking/lockdep.c:5202 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5825 __mutex_lock_common kernel/locking/mutex.c:608 [inline] __mutex_lock+0x175/0x9c0 kernel/locking/mutex.c:752 chaoskey_release+0x15d/0x2c0 drivers/usb/misc/chaoskey.c:322 __fput+0x3f6/0xb60 fs/file_table.c:431 task_work_run+0x14e/0x250 kernel/task_work.c:228 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0xadd/0x2ce0 kernel/exit.c:939 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088 __do_sys_exit_group kernel/exit.c:1099 [inline] __se_sys_exit_group kernel/exit.c:1097 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fbb318b0409 Code: Unable to access opcode bytes at 0x7fbb318b03df. RSP: 002b:00007fff4868af08 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fbb318b0409 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 RBP: 00007fbb3192b370 R08: ffffffffffffffb8 R09: 00007fff4868ac77 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fbb3192b370 R13: 0000000000000000 R14: 00007fbb3192f080 R15: 00007fbb3187e670