syzkaller login: [ 39.275318][ T2803] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 39.276562][ T2803] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 43.816410][ T2803] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:2043' (ECDSA) to the list of known hosts. [ 118.822634][ T2947] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=2947 'syz-executor216' executing program [ 118.932531][ T2947] loop0: detected capacity change from 0 to 512 [ 118.954190][ T2947] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 119.129321][ T2947] EXT4-fs (loop0): 1 truncate cleaned up [ 119.129733][ T2947] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 119.164139][ T2947] ------------[ cut here ]------------ [ 119.164592][ T2947] WARNING: CPU: 0 PID: 2947 at mm/slab_common.c:935 free_large_kmalloc+0x94/0xd0 [ 119.165927][ T2947] Modules linked in: [ 119.166424][ T2947] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 119.166990][ T2947] CPU: 0 PID: 2947 Comm: syz-executor216 Not tainted 6.3.0-syzkaller #0 [ 119.169334][ T2947] Hardware name: ARM-Versatile Express [ 119.169816][ T2947] Backtrace: [ 119.170256][ T2947] [<817b2528>] (dump_backtrace) from [<817b261c>] (show_stack+0x18/0x1c) [ 119.170776][ T2947] r7:81d81ac0 r6:82422c04 r5:60000093 r4:81d901cc [ 119.171273][ T2947] [<817b2604>] (show_stack) from [<817cec84>] (dump_stack_lvl+0x48/0x54) [ 119.174330][ T2947] [<817cec3c>] (dump_stack_lvl) from [<817ceca8>] (dump_stack+0x18/0x1c) [ 119.181676][ T2947] r5:00000000 r4:8264dd14 [ 119.191111][ T2947] [<817cec90>] (dump_stack) from [<817b3110>] (panic+0x11c/0x36c) [ 119.191612][ T2947] [<817b2ff4>] (panic) from [<802422ec>] (print_tainted+0x0/0xa0) [ 119.192011][ T2947] r3:8240c488 r2:00000001 r1:81d79fcc r0:81d81ac0 [ 119.192268][ T2947] r7:80436a2c [ 119.192380][ T2947] [<80242268>] (check_panic_on_warn) from [<802424e0>] (__warn+0x7c/0x180) [ 119.192629][ T2947] [<80242464>] (__warn) from [<802426bc>] (warn_slowpath_fmt+0xd8/0x1d8) [ 119.193113][ T2947] r8:00000009 r7:000003a7 r6:81da3124 r5:8240c954 r4:822ab6bc [ 119.193438][ T2947] [<802425e8>] (warn_slowpath_fmt) from [<80436a2c>] (free_large_kmalloc+0x94/0xd0) [ 119.193925][ T2947] r10:823e75a4 r9:00000704 r8:8436d7c0 r7:825dfc70 r6:823e75a4 r5:dde49c7c [ 119.194321][ T2947] r4:dde49c7c [ 119.194525][ T2947] [<80436998>] (free_large_kmalloc) from [<80436bb0>] (kfree+0x148/0x14c) [ 119.194824][ T2947] r7:8436d880 r6:804292ac r5:dde49c7c r4:823e75a4 [ 119.195106][ T2947] [<80436a68>] (kfree) from [<804292ac>] (kvfree+0x2c/0x30) [ 119.195632][ T2947] r7:8436d880 r6:8436d700 r5:00000400 r4:823e75a4 [ 119.196400][ T2947] [<80429280>] (kvfree) from [<80619f90>] (ext4_expand_extra_isize_ea+0x558/0x808) [ 119.197145][ T2947] r5:00000400 r4:823e75a4 [ 119.197630][ T2947] [<80619a38>] (ext4_expand_extra_isize_ea) from [<805c514c>] (__ext4_expand_extra_isize+0xdc/0x148) [ 119.198015][ T2947] r10:8455e368 r9:8455e360 r8:00000001 r7:8455e5e4 r6:823e7500 r5:8455e3e8 [ 119.198293][ T2947] r4:00000040 [ 119.198458][ T2947] [<805c5070>] (__ext4_expand_extra_isize) from [<805cc188>] (__ext4_mark_inode_dirty+0x158/0x270) [ 119.198834][ T2947] r8:00000040 r7:00000cb7 r6:df969df4 r5:00000001 r4:8455e3e8 [ 119.199040][ T2947] [<805cc030>] (__ext4_mark_inode_dirty) from [<805ee79c>] (__ext4_unlink+0x2e0/0x370) [ 119.199474][ T2947] r10:df969e58 r9:82c9ac50 r8:00000000 r7:836ee3c0 r6:00000001 r5:8455e3e8 [ 119.199721][ T2947] r4:8455f0a8 [ 119.199844][ T2947] [<805ee4bc>] (__ext4_unlink) from [<805ee980>] (ext4_unlink+0x154/0x1e4) [ 119.200201][ T2947] r10:82c9ac38 r9:8455f130 r8:df969f3c r7:8455f0a8 r6:82c9ac38 r5:8455e3e8 [ 119.200487][ T2947] r4:00000000 [ 119.200658][ T2947] [<805ee82c>] (ext4_unlink) from [<804cc41c>] (vfs_unlink+0x13c/0x2e0) [ 119.200937][ T2947] r7:8455f0a8 r6:8455e3e8 r5:82c9ac38 r4:00000000 [ 119.201327][ T2947] [<804cc2e0>] (vfs_unlink) from [<804d0fa8>] (do_unlinkat+0x198/0x2b4) [ 119.201745][ T2947] r9:df969f38 r8:00000003 r7:8290b000 r6:00000000 r5:8455f0a8 r4:00000000 [ 119.202071][ T2947] [<804d0e10>] (do_unlinkat) from [<804d10fc>] (sys_unlinkat+0x38/0x5c) [ 119.202496][ T2947] r10:00000148 r9:831bae00 r8:80200288 r7:00000148 r6:00000000 r5:00000000 [ 119.202808][ T2947] r4:00000003 [ 119.202928][ T2947] [<804d10c4>] (sys_unlinkat) from [<80200060>] (ret_fast_syscall+0x0/0x1c) [ 119.203286][ T2947] Exception stack(0xdf969fa8 to 0xdf969ff0) [ 119.203605][ T2947] 9fa0: 00000000 00000000 00000003 20000000 00000000 00001015 [ 119.203896][ T2947] 9fc0: 00000000 00000000 00000000 00000148 00000000 200002a2 20000276 00000000 [ 119.204296][ T2947] 9fe0: 7ecdec50 7ecdec40 0001085c 0002bb80 [ 119.204503][ T2947] r5:00000000 r4:00000000 [ 119.205200][ C1] CPU1: stopping [ 119.205826][ C1] CPU: 1 PID: 2948 Comm: udevd Not tainted 6.3.0-syzkaller #0 [ 119.206213][ C1] Hardware name: ARM-Versatile Express [ 119.206699][ C1] Backtrace: frame pointer underflow [ 119.207557][ C1] [<817b2528>] (dump_backtrace) from [<817b261c>] (show_stack+0x18/0x1c) [ 119.208592][ C1] r7:81d7d1d8 r6:00000001 r5:600701d3 r4:81d901cc [ 119.209131][ C1] [<817b2604>] (show_stack) from [<817cec84>] (dump_stack_lvl+0x48/0x54) [ 119.209520][ C1] [<817cec3c>] (dump_stack_lvl) from [<817ceca8>] (dump_stack+0x18/0x1c) [ 119.209841][ C1] r5:8280cb80 r4:00000003 [ 119.210011][ C1] [<817cec90>] (dump_stack) from [<80210348>] (do_handle_IPI+0x2e4/0x318) [ 119.210294][ C1] [<80210064>] (do_handle_IPI) from [<8021039c>] (ipi_handler+0x20/0x28) [ 119.210672][ C1] r9:00000000 r8:df805f78 r7:00000014 r6:8190faa8 r5:8280cb80 r4:82890a00 [ 119.211006][ C1] [<8021037c>] (ipi_handler) from [<802bb634>] (handle_percpu_devid_irq+0x9c/0x2d4) [ 119.211490][ C1] [<802bb598>] (handle_percpu_devid_irq) from [<802b4ee8>] (generic_handle_domain_irq+0x30/0x40) [ 119.211982][ C1] r10:00003e00 r9:00000000 r8:00000000 r7:df80a00c r6:822ac1a0 r5:df80a000 [ 119.212365][ C1] r4:8240cde8 r3:00010000 [ 119.212538][ C1] [<802b4eb8>] (generic_handle_domain_irq) from [<8086ab30>] (gic_handle_irq+0x68/0x7c) [ 119.212951][ C1] [<8086aac8>] (gic_handle_irq) from [<817cf360>] (generic_handle_arch_irq+0x60/0x80) [ 119.213366][ C1] r7:df961fb0 r6:81f47dd4 r5:81f47dec r4:822ad81c [ 119.213620][ C1] [<817cf300>] (generic_handle_arch_irq) from [<8178476c>] (call_with_stack+0x1c/0x20) [ 119.214003][ C1] r9:00000000 r8:822a4044 r7:83de0b80 r6:ffffffff r5:60070010 r4:76c5391c [ 119.214219][ C1] [<81784750>] (call_with_stack) from [<80200e74>] (__irq_usr+0x74/0x80) [ 119.215019][ C1] Exception stack(0xdf961fb0 to 0xdf961ff8) [ 119.215704][ C1] 1fa0: 00000000 00000000 00003e00 7eb9a2e0 [ 119.216412][ C1] 1fc0: 00000000 00599758 76f5a000 0000008c 005997a4 00000000 00003e00 00000000 [ 119.216795][ C1] 1fe0: 76f5a16c 7eb9a2e0 76f1b630 76c5391c 60070010 ffffffff [ 119.218578][ T2947] Rebooting in 86400 seconds.. VM DIAGNOSIS: 10:55:53 Registers: info registers vcpu 0 R00=833e2440 R01=00000031 R02=ebb07000 R03=ebb07018 R04=826500c3 R05=833e2440 R06=809499d8 R07=82650118 R08=826500bc R09=0000005d R10=00000001 R11=df96998c R12=00000002 R13=df969980 R14=8254c400 R15=809499d8 PSR=80000093 N--- A S svc32 s00=6d206174 s01=3a65646f d00=3a65646f6d206174 s02=69727720 s03=61626574 d01=6162657469727720 s04=45205d37 s05=2d345458 d02=2d34545845205d37 s06=203a7366 s07=6e726157 d03=6e726157203a7366 s08=3a676e69 s09=756f6d20 d04=756f6d203a676e69 s10=6e69746e s11=69772067 d05=697720676e69746e s12=61206874 s13=7865206e d06=7865206e61206874 s14=69726570 s15=746e656d d07=746e656d69726570 s16=00000000 s17=00000000 d08=0000000000000000 s18=00000000 s19=00000000 d09=0000000000000000 s20=00000000 s21=00000000 d10=0000000000000000 s22=00000000 s23=00000000 d11=0000000000000000 s24=00000000 s25=00000000 d12=0000000000000000 s26=00000000 s27=00000000 d13=0000000000000000 s28=00000000 s29=00000000 d14=0000000000000000 s30=00000000 s31=00000000 d15=0000000000000000 s32=00000000 s33=00000000 d16=0000000000000000 s34=00000000 s35=00000000 d17=0000000000000000 s36=00000000 s37=00000000 d18=0000000000000000 s38=00000000 s39=00000000 d19=0000000000000000 s40=00000000 s41=00000000 d20=0000000000000000 s42=00000000 s43=00000000 d21=0000000000000000 s44=00000000 s45=00000000 d22=0000000000000000 s46=00000000 s47=00000000 d23=0000000000000000 s48=00000000 s49=00000000 d24=0000000000000000 s50=00000000 s51=00000000 d25=0000000000000000 s52=00000000 s53=00000000 d26=0000000000000000 s54=00000000 s55=00000000 d27=0000000000000000 s56=00000000 s57=00000000 d28=0000000000000000 s58=00000000 s59=00000000 d29=0000000000000000 s60=00000000 s61=00000000 d30=0000000000000000 s62=00000000 s63=00000000 d31=0000000000000000 FPSCR: 00000000 info registers vcpu 1 R00=00000000 R01=7eb9f4c0 R02=7eb9f4c0 R03=00000000 R04=0000000d R05=7eb9f4c0 R06=0059e588 R07=000000c5 R08=000000ff R09=0004043f R10=7eb9f56c R11=000000ff R12=00056050 R13=ec3a9ff8 R14=76c52b28 R15=76c52b28 PSR=400f0093 -Z-- A S svc32 s00=746e692f s01=69726765 d00=69726765746e692f s02=0a0a0a0a s03=0a0a0a0a d01=0a0a0a0a0a0a0a0a s04=00200400 s05=00200400 d02=0020040000200400 s06=00040000 s07=00000000 d03=0000000000040000 s08=00200000 s09=00000000 d04=0000000000200000 s10=00000000 s11=00000000 d05=0000000000000000 s12=08040201 s13=80402010 d06=8040201008040201 s14=08040201 s15=80402010 d07=8040201008040201 s16=00000000 s17=00000000 d08=0000000000000000 s18=00000000 s19=00000000 d09=0000000000000000 s20=00000000 s21=00000000 d10=0000000000000000 s22=00000000 s23=00000000 d11=0000000000000000 s24=00000000 s25=00000000 d12=0000000000000000 s26=00000000 s27=00000000 d13=0000000000000000 s28=00000000 s29=00000000 d14=0000000000000000 s30=00000000 s31=00000000 d15=0000000000000000 s32=00000000 s33=00000000 d16=0000000000000000 s34=00000000 s35=00000000 d17=0000000000000000 s36=00000000 s37=00000000 d18=0000000000000000 s38=00000000 s39=00000000 d19=0000000000000000 s40=00000000 s41=00000000 d20=0000000000000000 s42=00000000 s43=00000000 d21=0000000000000000 s44=00000000 s45=00000000 d22=0000000000000000 s46=00000000 s47=00000000 d23=0000000000000000 s48=00000000 s49=00000000 d24=0000000000000000 s50=00000000 s51=00000000 d25=0000000000000000 s52=00000000 s53=00000000 d26=0000000000000000 s54=00000000 s55=00000000 d27=0000000000000000 s56=00000000 s57=00000000 d28=0000000000000000 s58=00000000 s59=00000000 d29=0000000000000000 s60=00000000 s61=00000000 d30=0000000000000000 s62=00000000 s63=00000000 d31=0000000000000000 FPSCR: 00000000